UNIVERSITY OF LEIPZIG

FACULTY OF CHEMISTRY AND MINERALOGY
INSTITUT OF ORGANIC CHEMISTRY
 
 
Research Group Prof. Dr. Peter Welzel
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    Scientific publications

    R.Tschesche, P.Welzel, R.Moll, G.Legler
    Über zwei Alkaloide aus der Rinde von Symplocos celastrinea Mart.
    Tetrahedron 20, 1435 (1964)

    R.Tschesche, P.Welzel, G.Legler
    Zur Struktur einiger tetrasubstituierter Aporphin-alkaloide
    Tetrahedron Lett. 1965, 445

    R.Tschesche, P.Welzel, G.Snatzke
    Zur Konstitution von Kondurangogenin A, dem Aglykon eines Esterglycosids der   Kondurangorinde
    Tetrahedron 21, 1777 (1965)

    R.Tschesche, P.Welzel, H.-W.Fehlhaber
    Massenspektrometrische Untersuchungen am Kondurangogenin A
    Tetrahedron 21, 1797 (1965)

    R.Tschesche, M.Baumgarth, P.Welzel
    Partialsynthese von Desacetylkondurangogenin A
    Tetrahedron 23, 249 (1967)

    R.Tschesche, H.Kohl, P.Welzel
    Die Struktur der Kondurangogenine A und C
    Tetrahedron 23, 1461 (1967)

    G.Snatzke, H.Schwang, P.Welzel
    The Circular Dichroism of Unsaturated g - and d-Lactones and Related Compounds
    R.Bonnet and J.G.Davies (eds.) Some Newer Physical Methods in Structural Chemistry, p.159, United Trade Press, London 1967

    R.Tschesche, M.Baumgarth, P.Welzel
    Zur Struktur der Jaborosalactone C, D und E, 
    Tetrahedron 24, 5169 (1968)

    D.H.R.Barton, D.Kumari, P.Welzel, L.J.Danks, J.F.McGhie
    The Synthesis of Cycloartenol
    Chem.Commun. 1968, 643

    D.H.R.Barton, D.Kumari, P.Welzel, L.J.Danks, J.F.McGhie
    The Synthesis of Cycloartenol
    J.Chem.Soc. (C) 1969, 332

    P. Welzel
    Die thermische Spaltung des Tetraphenylhydrazins. Ein Beitrag zum Problem der nicht katalysierten Benzidin-Umlagerung.
    Chem.Ber. 103, 1381 (1970)

    H.-W. Fehlhaber, P.Welzel
    Nachbargruppeneffekte bei der massenspektrometrischen Fragmentierung von    substituierten N.N-Diphenyl-acetamiden
    Organic Mass Spectrometry 4, 545 (1970)

    H.-W. Fehlhaber, D.Lenoir, P.Welzel
    Some Sterospecific Fragmentierung in the Mass Spectra of Steroids 
    Advances in Mass Spectrometry 5, 689 (1971)

    P.Welzel
    Die thermische Spaltung einiger Diarylnitrosamine und -nitramine
    Chem. Ber. 104, 808 (1971)

    R.Tschesche, K.Annen, P. Welzel
    Zur Konfiguration der Jabrosalactone, ein neuer Abbauweg für Withanolide
    Chem. Ber. 104, 3556 (1971)

    R. Tschesche, K.Annen, P. Welzel
    Die Struktur des Jaborosalactons F
    Tetrahedron 28, 1909 (1972)

    U.Pommerenk, H.Sengewein, P.Welzel
    Über die Reduktion von 3ß. 12 aa-Diacetoxy-D14.16-5a-pregnadien-20-on mit Triphenylzinnhydrid
    Tetrahedron Letters 1972, 3415

    K. Annen, R.Tschesche,P. Welzel
    Zur Hydrogenolyse einiger 6ß-Acetoxy- und 6ß-Hydroxy-Steroid- 4-Olefine
    Chem. Ber. 106, 576 (1973)

    R.Tschesche, J.Blumbach, P. Welzel
    Einige Untersuchungen an 2-Acylamino-Derivaten des Dimedons und des Cyclopentandions 1.3
    Liebigs Ann. Chem. 1973 , 407

    P.Welzel, H. Buhlke, P.Michalke, J.Simons, L.Winterfeld., R.Tschesche, H.-W.Fehlhaber, G.Huber
    Zur Struktur eines 2-Amino-Cyclopentandion-1.3, Galacturonsäure und Chinovosamin enthaltenden Hydrolysebruchstücks des Antibiotikums Moenomycin A.
    Tetrahedron Letters 3, 227 (1973)

    P. Welzel
    Prostaglandine
    Chemie in unserer Zeit 7, 43 (1975)

    G.Eckhardt, H.-W. Fehlhaber, H.Volk, P.Welzel
    Nachbargruppeneffekte bei der elektronenstoßinduzierten Fragmentierung von acetylierten 2,2`-Diamino-diphenylmethanen
    Org.Mass Spectrom. 9, 68 (1974)

    G. Eckhardt, P.Welzel
    Nachbargruppeneffekte bei der massenspektrometrischen Fragmentierung von Amino-  benzyl-alkoholen
    Org.Mass Spectrom. 9, 125 (1974)

    P.Welzel, L.Günther, G.Eckhardt
    Die thermische Umlagerung von Tetraarylhydrazinen. Über die C-N-Verknüpfung bei   Bildung von Semidin-Derivaten
    Chem.Ber. 107, 3624 (1974)

    P.Welzel, Ch.Dietz, G.Eckhardt
    Untersuchungen zum Mechanismus der thermischen Umlagerung von Tetraarylhydrazinen. Die Thermolyse einiger deuterierter Tetraarylhydrazine
    Chem. Ber. 108, 3550 (1975)

    P.Welzel, F.-J.Witteler, D.Müller
    Die Verknüpfung von Moenocinol, Glycerinsäure und Phosphorsäure im Antibiotikum   Moenomycin A
    Tetrahedron Lett. 1976, 1665

    W. Holtmeier, P.Welzel
    Über die Solvomercurierung von 3-Methyl-5a-cholest-2-en
    Tetrahedron Lett. 1976, 3423

    W. Holtmeier, K.Hobert, P.Welzel
    Über die Bildung von 5a-Cholestan-3ß-ol bei der Hydroxymercurierung- Demercurierung von 5a-Cholest-2-en
    Tetrahedron Lett. 1976, 4709

    P Welzel; I.Müther, H.Volk
    Zur Thermischen Umlagerung der Tetraarylhydrazine. Eigenschaften zweier Verbindungen vom Typ der Diarylaminyl-Dimeren
    Tetrahedron Lett. 1977, 745

    P.Welzel, I.Müther, K.Hobert, F.-J. Witteler, Th.Hartwig, G. Snatzke
    Steroid-1,3-oxathiolane; Konfigurationsbestimmung mit einer neuen allgemeinen CD-Sektorregel und Lithiumtetrahydroaluminat-Reduktion
    Liebigs Ann.Chem. 1978, 1333

    P.Welzel, W.Holtmeier, B.Weßling
    Anti-Markownikow-Addition bei der Oxymercurierung von 19-Hydroxy-5-cholesten-3ß-ylacetat
    Liebigs Ann.Chem. 1978, 1327

    N.Langenfeld, P.Welzel
    D-Moenuronsäure (4-C-Methylglucuronsäure), ein neuer Baustein des Antibiotikums
    Moenomycin A
    Tetrahedron Lett. 1978, 1833

    P.Welzel
    Structure and Properties of Moenomycin A, an Antibiotic Inhibitor of Peptidoglycan Synthesis 
    Proceedings of 11th International Symposium on Chemistry of Natural Products, Vol. 4, Part 2, S.394, Bulgarian Academy of Sciences, Sofia 1978

    F.-J. Witteler, P.Welzel, H. Duddeck, G. Höfle, W.Riemer, H.Budzikiewicz
    Struktur des Antibiotikums Moenomycin A 
    Tertahedron Lett. 1979, 3493

    P.Welzel, G.Knupp, F.-J. Witteler, Th.Schubert, H.Duddeck, D.Müller, G.Höfle
    Moenomycin A: Spaltung des Antibiotikums mit Trifluoressigsäure und Bestimmung der Verknüpfung von D-Glucose und 2-Acetamido-2-desoxy-D-glucose
    Tetrahedron 37, 97 (1981)

    P.Welzel, F.-J.Witteler, L.Hermsdorf, R.Tschesche, H.Buhlke, P.Michalke, J.Simons, H.-W. Fehlhaber, J. Blumbach, G.Huber
    Die Verknüpfung von 2-Aminocyclopentan-1,3-dion, D-Galacturonsäure und D-Chinovosamin im Antibiotikum Moenomycin A
    Tetrahedron 37, 105 (1981)

    P.Welzel, F.-J. Witteler, L.Hermsdorf, W. Riemer
    Die Ringgröße des Galacturonsäurebausteins im Antibiotikum Monomycin A
    Terahedron 37, 113 (1981)

    P.Welzel, F.-J.Witteler, L.Hermsdorf, W.Riemer
    Die Struktur des Antibiotikums Moenomycin A
    Angew.Chem. 93, 130 (1981)

    P.Welzel, B.Janssen, H.Duddeck
    14ß-Hydroxysteroide,II. Zur Prins-Reaktion von Lumihecogeniacetat
    Liebigs Ann. 1981, 546

    P.Welzel, H. Stein
    14ß-Hyroxy Steroide-III. Synthesis of Digoxigenin from Deoxycholic Acid
    Tetrahedron Lett. 22, 3385 (1981)

    P. Welzel
    Studies on the Synthesis of 14ß-Hydroxy Steroids 
    Proceedings of the 1st International Conference on Chemistry and Biotechnology of Active Natural Products, Bd.2, S. 181, Bulgarien Academy of Sciences, Sofia 1981

    T.Milkova, H.Stein, A.Ponty, D.Böttger, P.Welzel
    14ß-Hydroxy Steroids-VI. Synthesis of Digitoxigenin
    Tetrahedron Lett. 23, 413 (1982)

    P.Welzel, R.Moschner, A.Ponty, U.Pommerenk H.Sengewein
    14ß-Hydrosteroide, V. Synthese von Derivaten der Digipurogenine I und II
    Liebigs Ann. Chem. 1982, 564

    Th.Schubert, P.Welzel
    Optisch aktive Glycerin-Derivate aus 1,3(R):4,6(R)-Di-O- benzyliden-D-Mannit - Erste Strukturanaloga von Moenomycin A
    Angew.Chem. 94, 135 (1982)

    P.Welzel, H.Stein, T.Milkova
    14ß-Hydroxysteroide,VII. Synthese von Digoxigenin und Digitoxigenin aus Desoxychlorsäure
    Liebigs Ann. Chem. 1982, 2119

    P.Welzel, B.Wietfeld, F.Kunisch, Th.Schubert, K.Hobert, H.Duddeck, D.Müller, G.Huber, J.E.Maggio, D.H.Williams
    Moenomycin A: Further Structual Studies and Preparation of Simple Derivatives
    Tetrahedron 39, 1583 (1983)

    Th.Schubert, F.Kunisch, P.Welzel
    1,3(R): 4,6(R)-Di-O-benzyliden-D-Mannit als Ausgangsprodukt für die Synthese optisch aktiver Glycerin-Derivate
    Tetrahedron 39, 2211 (1983)

    P. Welzel
    Synthese im Blickpunkt 1983/1
    Dodecahedran-Molekül des Jahres 1982
    Nachr.Chem.Techn. Lab. 31,14 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/2
    Leukotrien-Synthesen
    Nachr.Chem.Techn.Lab. 31, 117 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/3
    Hochdruck-Reaktionen in der organischen Synthese
    Nachr.Chem.Techn.Lab. 31, 184 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/4
    Cyclopentanoide Naturstoffe durch Alken-Addition an Aromaten
    Nachr.Chem.Techn. Lab. 31, 262 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/5
    Die intramolekulare „Magnesium-En-Reaktion“
    Nachr.Chem.Techn.Lab. 31, 360 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/6
    Lycopodin-Synthesen
    Nachr.Chem.Techn.Lab. 31, 462 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/7
    Pyridine durch Diels-Alder-Reaktion mit inversem Elektronenbedarf
    Nachr.Chem.Techn.Lab. 31, 524 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/8
    Methylencyclopentane aus Trimethylenbmethan-Derivaten und Olefinen
    Nachr.Chem.Techn.Lab. 31, 638 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/9
    2-Cyclopentenone durch a-Alkinon-Cyclisierung
    Nachr.Chem.Techn.Lab. 31, 710 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/10
    Alken-Synthesen mit der Mc Mury-Reaktion
    Nachr.Chem.Techn.Lab. 31, 814 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/11
    Anwendungen der Pummerer-Reaktion
    Nachr.Chem.Techn.Lab. 31, 892 (1983)

    P.Welzel
    Synthese im Blickpunkt 1983/12
    Asymmetrische Diels-Alder-Reaktionen
    Nachr.Chem.Techn.Lab. 31, 979 (1983) 

    Th.Schubert, K.Hobert, P.Welzel
    Erste Strukturanaloga des Antibiotikums Moenomycin A
    Tetrahedron 39, 2219 (1983)

    P.Welzel, K.Hobert, A.Ponty, T.Milkova
    4-Androst-3,17-dione from Cholesterol, ß-Sitosterol, and Campesterol by Chemical Degradation
    Tetrahedron Lett. 24, 3199 (1983)

    D.Böttger, P.Welzel
    A Synthesis of Moenocinol from Isoprenoid Precursors
    Tetrahedron Lett. 24, 5201 (1983)

    P.Welzel, F.Kunisch, F.Kruggel, H.Stein, A.Ponty, H.Duddeck
    Stepwise Degradation of Moenomycin A
    Carbohydr.Res. 126, C1 (1984)

    P.Welzel, J.Schmidt
    Eigenschaften eines (Arylthiomethylen)cyclohexanons
    Liebigs Ann.Chem. 1984, 576

    P.Welzel, H.-P.Bulian, A.Maulshagen, D.Müller, G.Snatzke
    Moenuronic Acid, Synthetic Studies and Absolute Configuration
    Tetrahedron 40, 3657 (1984)

    D.Böttger, P.Welzel
    Zur Synthese des C25-Alkohols Moenocinol. Fragmentierungsversuche an cyclischen ß-Ketotosylaten und Hydroxytosylaten
    Liebigs Ann.Chem. 1985, 837

    U.Hedtmann, P.Welzel
    A Facile Synthesis of the 20-Hydroxyecdysone Side Chain via a Dihydrofuran Derivative
    Tetrahedron Lett. 26, 2772 (1985)

    P.Welzel, K.Hobert, F.Kunisch
    Botrydial Synthetic Studies: Asymmetric Synthesis of Quaternary Carbon Centres
    F.E.C.S.Third International Conference on Chemistry and 
    Biotechnology of Biologically Active Natural Products, 
    Vol. 2, p. 272, Publishing House of the Bulgarian Academy of Sciences, Sofia 1985

    P.Welzel, K.Hobert, A.Ponty, D.Neunert, H.Klein, T.Milkova
    Remote Halogenation: Some Model Studies and Specific Degradation of the Cholesterol, Sitosterol, and Campesterol Side Chain
    Tetrahedron41, 4509 (1985)

    F.Kunisch, K.Hobert, P.Welzel
    Botrydial Synthetic Studies. Asymmetric Synthesis of Quaternary Carbon Centres
    Tetrahedron Lett. 26, 5433 (1985)

    F.Kunisch, K.Hobert, P.Welzel
    On the Stereochemistry of the BF3-Catalyzed Rearrangement of (+)-Isophorone    Oxide
    Tetrahedron Lett. 26, 6039 (1985)

    H.-W.Hoppe, P.Welzel
    A Synthesis of Bufalin from Deoxycholic Acid
    Tetrahedron Lett. 27, 2459 (1986)

    J.Scherkenbeck, W.Dietrich, D.Müller, D.Böttger, P.Welzel
    Forskolin Studies
    Tetrahedron 42, 5949 (1986)

    P.Welzel, F.Kunisch, F.Kruggel, H.Stein, J.Scherkenbeck, A.Hiltmann, H.Duddeck, D.Müller, J.E.Maggio, H.-W.Fehlhaber, G.Seibert, Y.van Heijenoort, J.van Heijenoort
    Moenomycin A: Minimum Structural Requirements for Biological Activity
    Tetrahedron 43, 585 (1987)

    P.Welzel, D.Böttger, U.Heinz, A.H.Said, A.Fischer, E.Adams
    A Synthesis of Moenocinol from Isoprenoid Precursors
    Pure Appl.Chem. 59, 385 (1987)

    H.-W.Hoppe, M.Kaiser, P.Welzel
    An Approach to Bufadienolides from Deoxycholic Acid. Strategy and Synthesis of a Model Bufadienolide
    Tetrahedron 43, 2045 (1987)

    U.Berlage, J.Schmidt, U.Peters, P.Welzel
    A Formal Total Synthesis of (±)-Strigol
    Tetrahedron Lett. 28, 3091 (1987)

    U.Berlage, J.Schmidt, Z.Milkova, P.Welzel
    A (Formal) Total Synthesis of (+)-Strigol, the Witchweed Germination Factor
    Tetrahedron Lett. 28, 3095 (1987)

    P.Welzel, H.Stein, W.Hoppe, A.Hiltmann, K.Hobert, U.Hedtmann, Ts.Milkova
    Synthese von biologisch aktiven Steroiden aus Steroid-Rohstoffen
    Izv.Khim.Inst.Bulg.Akad.Nauk 20, 48 (1987)

    J.Scherkenbeck, D.Böttger, P.Welzel
    1,9-Dideoxyforskolin. Enolate Formation-Oxidation
    Tetrahedron 43, 3797 (1987)

    U.Peters, W.Bankova, P.Welzel
    Platelet Activating Factor Synthetic Studies
    Tetrahedron 43, 3803 (1987)

    U.Hedtmann, K.Hobert, Ts.Milkova, P.Welzel
    Synthesis of Potential Ecdysteroid Precursors from D7,22 Sterols
    Tetrahedron 44, 1941 (1988)

    J.Scherkenbeck, D.Böttger, P.Welzel
    Model Studies Directed towards Forskolin: 1,9-Dideoxyforskolin from a Bicyclic Precursor
    Tetrahedron 44, 2439 (1988)

    J.Scherkenbeck, M.Barth, U.Thiel, K.-H.Metten, F.Heinemann, P.Welzel
    Model Studies Directed Toward Forskolin: Synthesis of a Tricyclic Model Compound from Farnesol
    Tetrahedron44, 6325 (1988)

    H.Hohgardt, W.Dietrich, H.Kühne, D.Müller, D.Grzelak, P.Welzel
    Synthesis of Two Structural Analogues of the Smallest
    Antibiotically Active Degradation Product of Moenomycin A
    Tetrahedron44, 5771 (1988)

    J.van Heijenoort, Y.van Heijenoort, P.Welzel
    Moenomycin: Inhibitor of Peptidoglycan Polymerization in Escherichia coli
    P.Actor, L.Daneo-Moore, M.L.Higgins, M.R.J.Salton, G.D.Shockman (eds) "Antibiotic Inhibition of Bacterial Cell Wall Surface Assembly and Function"
    American Society for Microbiology, Washington 1988, S.549.

    D.Neunert, H.Klein, P.Welzel 
    Forskolin: Some Studies on Ring B Forming Reactions
    Tetrahedron 45, 661 (1989)

    U.Werner, H.-W.Hoppe, P.Welzel, G.Snatzke, R.Boese
    An Approach to Bufadienolides from Deoxycholic Acid. UV, CD, and X-Ray Data of Some 22,23-Dihydro-bufadienolides
    Tetrahedron 45, 1703 (1989)

    H.-W.Hoppe, B.Stammen, U.Werner, H.Stein, P.Welzel
    An Approach to Bufadienolides from Deoxycholic Acid Reactions of a Steroidal a,ß-Unsaturated Aldehyde with Some O-Silylated Ketene Acetals
    Tetrahedron 45, 3695 (1989)

    P.Welzel, B.Janssen, H.Stein, T.Milkova, H.-W.Hoppe, U.Werner, U.Möller, B.Stammen, D.Böttger, A.Ponty, M.Kaiser, P.Wagner, D.Müller
    Synthesis of Cardioactive Steroids from Deoxycholic Acid
    Proceedings of the 5th International Conference on Chemistry and Biotechnology of   Biologically Active Natural Products, Varna (Bulgaria) 1989, vol.3, p.493-517

    U.Werner, U.Möller, P.Wagner, P.Welzel, Ch.Zylka, S.Mechmann, H.Pusch, H.G.Glitsch
    Synthese und pharmakologische Eigenschaften eines neuartigen herzwirksamen Steroids
    Angew.Chem. 101, 1417 (1989)

    U.Hedtmann, K.Hobert, R.Klintz, P.Welzel, J.Frelek, M.Strangmann-Diekmann, A.Klöne, O.Pongs
    Seitenkettenhomologe des 20-Hydroxyecdysons: Synthese, Konfigurationsbestimmung und biochemische Charakterisierung
    Angew.Chem. 101, 1543 (1989)

    H.-W.Fehlhaber, M.Girg, G.Seibert, K.Hobert, P.Welzel, Y.van Heijenoort, J.van Heijenoort
    Moenomycin A: A Structural Revision and New Structure-Activity Relations
    Tetrahedron 46, 1557 (1990)

    U.Heinz, E.Adams, R.Klintz, P.Welzel
    2-Tosyloxymethylcyclanones: Ring Size Dependence of Fragmentation Versus Intramolecular Alkylation
    Tetrahedron 46, 4217 (1990)

    M.Strangmann-Diekmann, A.Klöne, A.Ozyhar, F.Kreklau, H.-H.Kiltz, U.Hedtmann, P.Welzel, O.Pongs
    Affinity labelling of a partially purified ecdysteroid receptor with a bromoacetylated   20-OH-ecdysone derivative
    Eur.J.Biochem.189, 137 (1990)

    K.-H.Metten, P.Welzel
    Synthesis of the repeating unit of the capsular antigen of Neisseria meningitidis serogroup H
    Tetrahedron 46, 5145 (1990)

    E.Adams, M.Hiegemann, H.Duddeck, P.Welzel
    Five-membered ring formation of 2-hydroxyalkyl malonate and acetoacetate derivatives.- The problem of O- versus C-alkylation
    Tetrahedron 46, 5975 (1990)

    E.Samson, K.Frischmuth, U.Berlage, U.Heinz, K.Hobert, P.Welzel
    Synthesis of (+)-Strigol, (+)-4'-Epistrigol, and their Enantiomers
    Tetrahedron 47, 1411 (1991)

    U.Hedtmann, R.Klintz, K.Hobert, J.Frelek, I.Vlahov, P.Welzel
    A Facile Route to 20-Hydroxyecdysone and Side Chain Homologues from Poststerone
    Tetrahedron 47, 3753 (1991)

    K.Frischmuth, E.Samson, A.Kranz, P.Welzel, H.Meuer, W.S.Sheldrick
    Routes to Derivatives of Strigol (the Witchweed Germination Factor) Modified in the   5-Position
    Tetrahedron 47, 9793 (1991)

    F.Heinemann, M.Hiegemann, P.Welzel
    Glycosylations with Tetra-O-acetyl-N-allyloxycarbonyl-amino-2-deoxy-ß-D-glucose in polar solvents
    Tetrahedron 48, 3781 (1992)

    B.Stammen, U.Berlage, R.Kindermann, M.Kaiser, B.Günther, W.S.Sheldrick, P.Welzel, W.R.Roth
    Stereoselection in Thermal Asymmetric Diels-Alder Reactions. Electronic vs Steric Effects
    J.Org.Chem. 57, 6566 (1992)

    P.Welzel, B.Janssen, H.Stein, T.Milkowa, H.-W.Hoppe, U.Werner, U.Möller, B.Stammen, D.Böttger, A.Ponty, M.Kaiser, P.Wagner, D.Müller, H.G.Glitsch, H.Pusch, Ch.Zylka, S.Mechmann
    Synthesis of Cardioactive Steroids
    Trends in Medicinal Chemistry '90', p. 277, Blackwell Scientific Publications 1992

    K.-H.Metten, K., K.Hobert, S.Marzian, U.E.Hackler, U.Heinz, P.Welzel, W.Aretz, D.Böttger, U.Hedtmann, G.Seibert, A.Markus, M.Limbert, Y.van Heijenoort, J.van Heijenoort
    The First Enzymatic Degradation Products of the Antibiotic Moenomycin A
    Tetrahedron 48, 8401 (1992)

    S.Kolczewski, R.Rosenbaum, P.Wagner, P.Welzel
    Spiroforskolin: Structure and Mode of Formation
    Tetrahedron 48, 10301 (1992)

    U.Möller, K.Hobert, A.Donnerstag, P.Wagner, D.Müller, H.-W.Fehlhaber, A.Markus, P.Welzel
    Moenomycin A - Structure Activity Relations. Synthesis of the D-Galacturonamide Analogue of the Smallest Antibiotically Active   Degradation Product of Moenomycin A
    Tetrahedron 49, 1635 (1993)

    St.Bick, S.Zimmermann, H.Meuer, W.S.Sheldrick, P.Welzel
    Synthesis of an Advanced Forskolin Intermediate
    Tetrahedron49, 2457 (1993)

    K.Frischmuth, U.Wagner, E.Samson, D.Weigelt, P.Koll, H.Meuer, W.S.Sheldrick, P.Welzel
    Configurational Assignment at C-2' of Some Strigol Analogues
    Tetrahedron Asymmetry 4, 351 (1993)

    P.Welzel
    Transglycosylase Inhibition in Antibiotics and Antiviral Compounds - Chemical Synthesis and Modifications 
    (K.Krohn, H.Kirst, H.Maas, Eds), S. 373, VCH, Weinheim 1993

    J.Scherkenbeck, A.Hiltmann, K.Hobert, W.Bankova, T.Siegels, M.Kaiser, D.Müller, H.J.Veith, H.-W.Fehlhaber, G.Seibert, A.Markus, M.Limbert, G.Huber, D.Böttger, A.Stärk, S.Takahashi, Y.van Heijenoort, J.van Heijenoort, P.Welzel
    Structures of Some Moenomycin Antibiotics - Inhibitors of Peptidoglycan Biosynthesis
    Tetrahedron 49, 3091 (1993)

    M.Heßler-Klintz, K.Hobert, A.Biallaß, T.Siegels, M.Hiegemann, A.Maulshagen, P.Welzel, G.Huber, D.Böttger, A.Markus, G.Seibert, A.Stärk, H.-W.Fehlhaber, Y.van Heijenoort, J.van Heijenoort
    The First Moenomycin Antibiotic Without The Methyl-Branched Uronic Acid Constituent. - Unexpected Structure-Activity Relations
    Tetrahedron 49, 7667 (1993)

    J.Lüning, U.Möller, N.Debski, P.Welzel
    A New Method for the Cleavage of Allyl Glycosides
    Tetrahedron Lett. 34, 5871 (1993)

    J.Lüning, U.Möller, D.Müller, P.Welzel, A.Markus, Y.van Heijenoort, J.van Heijenoort
    The First Synthesis of a Moenomycin-Type Transglycosylase Inhibitor
    Tetrahedron 49, 10587 (1993)

    C.Bergmann, K.Wegmann, K.Frischmuth, E.Samson, A.Kranz, D.Weigelt, P.Koll, P.Welzel
    Stimulation of Orobanche crenata Seed Germination by (+)-Strigol and Structural   Analogues - Dependence on Constitution and Configuration of the Germination Stimulants
    J.Plant Physiol. 142, 338 (1993)

    M.Heuer, K.Hohgardt, F.Heinemann, H.Kühne, W.Dietrich, D.Grzelak, D.Müller, P.Welzel, A.Markus, Y.van Heijenoort, J.van Heijenoort
    Structural Analogues of the Antibiotic Moenomycin with a D-Glucose-Derived Unit F
    Tetrahedron, 50, 2029 (1994)

    G.Jordine, S.Bick, U.Möller, P.Welzel, B.Daucher, G.Maas
    Studies of Forskolin Ring C Forming Reactions
    Tetrahedron 50, 139 (1994)

    J.Lüning, A.Markus, P.Welzel
    Moenomycin-Type Transglycosylase Inhibitors: Inhibiting Activity vs. Topology around the Phosphoric Acid Diester Group
    Tetrahedron Lett. 35, 1859 (1994)

    S.Marzian, M.Happel, U.Wagner, D.Müller, P.Welzel, H.-W.Fehlhaber, A.Stärk, H.-J.Schütz, A.Markus, M.Limbert, Y.van Heijenoort, J.van Heijenoort
    Moenomycin A: Reactions at the Lipid Part. New Structure-Activity Relations
    Tetrahedron 50, 5299 (1994)

    J.Schröer, P.Welzel
    Asymmetric Synthesis of a Key Synthetic Precursor for (+)-Strigol and Sorgolactone
    Tetrahedron 50, 6839 (1994)

    K.Frischmuth, A.Marx, T.Petrowitsch, U.Wagner, K.Koerner, S.Zimmermann, H.Meuer, W.S.Sheldrick, P.Welzel
    Strigol Synthetic Studies - The First Approach that Allows Control of C-2´    Configuration
    Tetrahedron Lett. 35, 4973 (1994)

    P.Welzel, K.Frischmuth, C.Bergmann, K.Wegmann
    Structure-activity relationships for strigol analogues: results and conclusions:
    Biology and management of Orobanche, Proceedings of the Third International Workshop on Orobanche and related Striga research. A.H.Pieterse, J.A.C.Verkleij, S.J.ter Borg (eds.), Amsterdam, The Netherlands, Royal Tropical Institute, 1994

    A.Donnerstag, S.Marzian, D. Müller, P.Welzel, D.Böttger, A.Stärk, H.-W.Fehlhaber, A.Markus, Y.van Heijenoort, J.van Heijenoort
    A Structurally and Biogenetically Interesting Moenomycin Antibiotic
    Tetrahedron 51, 1931 (1995)

    S. Zimmermann, S. Bick, P. Welzel, H. Meuer, W. S. Sheldrick
    Synthesis of a 1,9-Dideoxy-Forskolin Derivative
    Tetrahedron 51, 2947 (1995)

    U. Kempin, L. Hennig, P. Welzel, S. Marzian, D. Müller, H.-W. Fehlhaber, A. Markus, 
    Y. van Heijenoort, Jean van Heijenoort
    Introduction of a Terminal Hydroxy Group into the Lipid Part of a Moenomycin-Type Transglycosylase Inhibitor Suppresses Antibiotic Activity
    Tetrahedron 51, 8471 (1995)

    P. Welzel
    Determination of Absolute and Relative Configuration Using Chemical Methods, 
    Houben-Weyl, Stereoselective Synthesis, Bd. E 21 a, p.399, Thieme, Stuttgart 1995

    D.Weigelt, R.Kraehmer, P.Welzel
    New Protecting Group Chemistry in the Synthesis of Moenomycin Analogues
    Tetrahedron Lett. 37, 367 (1996)

    U.Kempin, L.Hennig, D.Müller, A.Markus, P.Welzel
    A Selective Reaction that can be used to attach Moenomycin to Solid Supports and Proteins
    Tetrahedron Lett. 37, 5087 (1996)

    T.Staroske, L.Hennig, Peter Welzel, H.-J.Hofmann, D.Müller, T.Häusler, W.S.Sheldrick, S.Zillekens, B.Gretzer, H.Pusch, H.G.Glitsch
    Synthesis and Pharmacological Properties of Cardenolides Substituted At The Butenolide Part
    Tetrahedron 52, 12723 (1996)

    F.Volke, R.Waschipky, A.Pampel, A.Donnerstag, G.Lantzsch, H.Pfeiffer, W.Richter, G.Klose, P.Welzel
    Characterisation of Antibiotic Moenomycin A Interaction with Phospholipid Model Membranes
    Chem.Phys.Lipids85, 115 (1997)

    A.Donnerstag, L.Hennig, M.Findeisen, P.Welzel, R.Haessner
    1H NMR as a Tool for the Structure Elucidation of Moenomycin Antibiotics
    Magn.Reson.Chem.34, 1031 (1996)

    A.Kranz, E.Samson-Schulz, L.Hennig, P.Welzel, D.Müller, H.Mayer-Figge, W.S.Sheldrick
    Synthesis of New Strigol Analogues
    Tetrahedron 52, 14827 (1996)

    O.Ritzeler, L Hennig, M.Findeisen, P.Welzel, D.Müller
    Search for New Moenomycin Structure-Activity Relationships
    Synthesis of a Trisaccharide Precursor of a Moenomycin Analogue
    Tetrahedron 53, 1665 (1997)

    O.Ritzeler, L.Hennig, M.Findeisen, P.Welzel, D.Müller, A.Markus, G.Lemoine, M.Lampilas, J.van Heijenoort
    Synthesis of a Trisaccharide Analogue of Moenomycin A12
    Implications of New Moenomycin Structure-Activity Relationships
    Tetrahedron 53, 1675 (1997)

    G.Range, R.Krähmer, P.Welzel, D.Müller, G.F.Herrmann, U.Kragl, Ch.Wandrey, A.Markus, Y.van Heijenoort, J.van Heijenoort
    A Chemoenzymatic Approach towards Moenomycin Structural Analogues
    Tetrahedron 53, 1695 (1997)

    R.Kosmol, L.Hennig, P.Welzel, M.Findeisen, D.Müller, A.Markus, J.van Heijenoort
    A Moenomycin-type Structural Analogue of Lipid II. Some possible mechanisms of the mode of action of transgylcosylase inhibitors can be discarded
    J.Prakt.Chem. 339, 340-358 (1997)

    S.Röhrig, L.Hennig, M.Findeisen, P.Welzel, D.Müller
    Strigol and Sorgolactone Synthetic Studies - Use of Winterfeldt´s Template to Control the C-2´Configuration
    Tetrahedron Lett. 38, 5489 (1997)

    Dirk Behnke, Stefan Hamm, Lothar Hennig, Peter Welzel
    An Allylic Isoprenoid C5 Nucleophile for the Synthesis of Forskolin
    Tetrahedron Lett. 38, 7059 (1997)

    Uwe Kempin, Lothar Hennig, Dietmar Knoll, Peter Welzel, Dietrich Müller, Astrid Markus, Jean van Heijenoort
    Moenomycin A: New Chemistry that Allows to Attach the Antibiotic to Reporter Groups, Solid Supports, and Proteins
    Tetrahedron 53, 17669 (1997)

    Thomas Staroske, Martina Käsler, Peter Welzel
    Building blocks for (+)-Strigol
    Chirality 9, 463 (1997)

    Kirsten Endler, Urs Schuricht, Lothar Hennig, Peter Welzel, Udo Holst, Werner Aretz, Dirk Böttger, Gerhard Huber
    Exploratory Investigations into the Biosynthesis of the Antibiotic Moenomycin A
    Tetrahedron Lett. 39, 13 (1998)

    S.Erlenkamp, B.Gretzer, S.Zillikens, H.G.Glitsch, H.Pusch, T.Staroske, P.Welzel
    Na+/K+ pump inibition and positive inotropic effect of digitoxigenin and some C-22-substituted derivatives in sheep cardiac preparations
    Naunyn-Schmiedberg´s Arch.Pharmacol.357, 54 (1998)

    Lothar Hennig, Matthias Findeisen, Peter Welzel, Rainer Haeßner
    1H NMR Spectroscopic Studies of the Moenomycins
    Magn.Reson.Chem. 36, 615 (1998)

    Katja Frischmuth, Dietrich Müller, Peter Welzel
    Strigol Synthetic Studies - The Problem of Stereocontrol at C-2'
    Tetrahedron 54, 3401 (1998)

    Susanne Röhrig, Lothar Hennig, Matthias Findeisen, Peter Welzel, Katja Frischmuth, Andreas Marx, Tanja Petrowitsch, Peter Koll, Dietrich Müller, Heike Mayer-Figge, William S.Sheldrick
    Attempted Stereocontrol at C-2´ of Strigol-type Compounds by a Michael Reaction / Elimination Approach
    Tetrahedron 54, 3413 (1998)

    Susanne Röhrig, Lothar Hennig, Matthias Findeisen, Peter Welzel, Dietrich Müller
    Use of Winterfeldt´s Template to Control the C-2´ Configuration in the Synthesis of Strigol-type Compounds
    Tetrahedron 54, 3439 (1998)

    G.Lantzsch, H.Binder, H.Heerklotz, P.Welzel, G.Klose
    Aggregation behaviour of the Antibiotic Moenomycin A in Aqueous Solution, 
    Langmuir 14, 4095 (1998)

    R.Krähmer, L.Hennig, M.Findeisen, D.Müller, P.Welzel
    Oxidative Deprotection of Allyl Glycosides
    Tetrahedron 54, 10753 (1998)

    M.Traebert, I.Trebeß, S.Erlenkamp, J.Hüser, J.Kockskämper, C.Hartung, H.G.Glitsch, P.Welzel
    High affinity regulation of cardiac Cl- and Ca2+ conductances by spiroforskolin
    Naunyn-Schmiedberg´s Arch.Pharmacol.358, 538 (1998)

    D. Weigelt, R. Krähmer, K.Brüschke, L.Hennig, M.Findeisen, D.Müller, P. Welzel
    Synthetic Studies of Moenomycin A Disaccharide Analogues. 
    Protection of the Anomeric Center with Long-Chain Protective Groups
    Tetrahedron 55, 687-698 (1999)

    N.El-Abadla, M.Lampilas, L.Hennig, M.Findeisen, P.Welzel,D.Müller, A.Markus, J.van Heijenoort
    The Methyl Group in the Moenuronamide Unit of Moenomycin A is not a Prerequisite for Transglycosylase Inhibiting Properties. A General Discussion of Structure-Activity Relationships
    Tetrahedron55, 699-722 (1999)

    F.T.Ferse, K.Floeder, L.Hennig, M.Findeisen, P.Welzel, D.Müller, J.van Heijenoort
    Acceptor Site Recognition of Transglycosylase Inhibitors. 
    A b-D-glucopyranosyl-(1®2)-a-D-glucopyranuronamide-derived Moenomycin Analogue
    Tetrahedron 55, 3749 (1999)

    S.Riedel, A.Donnerstag, L.Hennig, P.Welzel, J.Richter, K.Hobert, D.Müller, J.van Heijenoort
    Synthesis and transglycosylase-inhibiting properties of a disaccharide analogue of moenomycin A lacking substitution at C-4 of unit F. 
    Tetrahedron 55, 1921 (1999)

    P.Welzel, S.Röhrig, Z.Milkova
    Strigol-type germination stimulants - The C-2´configuration problem 
    Feature article
    J.Chem.Soc.Chem.Commun.1999, 2017

    A.Anikin, A.Buchynskyy, U.Kempin, K.Stembera, P.Welzel, G.Lantzsch
    Membrane  Anchoring  and Intervesicle Transfer of a Derivative of the Antibiotic Moenomycin A
    Angew. Chem. 111, 3931 (1999), Angew.Chem.Int.Ed.38, 3703 (1999)

    S.Hamm, S.Zimmermann, L.Hennig, D.Müller, P.Welzel
    Studies on a Forskolin ring C forming reaction
    Tetrahedron Lett 40, 9225 (1999)

    D.Behnke, L.Hennig, M.Findeisen, P.Welzel, D.Müller, M.Thormann, H.-J.Hofmann
    Forskolin studies
    Tetrahedron 56, 1081-1095 (2000)

    S.Hamm, L.Hennig, M.Findeisen, D.Müller, P.Welzel
    Submission of some Iodoformates to the Woodward-Prévost Conditions
    Tetrahedron 56, 1346 (2000)

    U.Schuricht, L.Hennig, M.Findeisen, P.Welzel
    On the Biosynthesis of Moenocinol, the Lipid Part of the Moenomycin Antibiotics
    Tetrahedron Lett., 41, 3047 (2000) 

    S.Vogel, A.Buchynskyy, K.Stembera, K.Richter, L.Hennig, D.Müller, P.Welzel, F.Maquin, C.Bonhomme, M.Lampilas
    Some Selective Reactions of Moenomycin A
    Bioorg.Med.Chem.Lett. 10, 1963 (2000)

    Th.Rühl, L.Hennig, Y.Hatanaka, K.Burger, P.Welzel
    A Trifunctional Reagent for Photoaffinity Labeling
    Tetrahedron Lett. 41, 4555-4558 (2000)

    U.Schuricht, K.Endler, L.Hennig, M.Findeisen, P.Welzel
    Studies on the Biosynthesis of Moenomycin A
    J.Prakt.Chem. 342, 761 (2000)

    J.Zotzmann, L.Hennig, P.Welzel, D.Müller, C.Schäfer, S.Zillikens, H.Pusch, H.G.Glitsch, R.Regenthal
    A Novel Cardenolide Photoaffinity Label for the Na/K-ATPase
    Tetrahedron 56, 9625 (2000)

    H.Schürer, A.Buchynskyy, K.Korn, M.Famulok, P.Welzel, U.Hahn
    Fluorescence Correlation Spectroscopy as a New Method for the Investigation of Aptamer/Target Interactions
    Biol.Chem. 382, 479-481 (2001)

    J.Zahra, L.Hennig, M.Findeisen, P.Welzel, D.Müller, W.S.Sheldrick
    Synthesis of a building block for phosphonate analogues of moenomycin A12
    Tetrahedron Lett. 42, 2969 (2001) 

    S.Vogel, K.Stembera, L.Hennig, M.Findeisen, S.Giesa, P.Welzel, M.Lampilas
    Moenomycin analogues with modified lipid chains from indium-mediated Barbier-type reactions
    Tetrahedron 57, 4139 (2001)

    S.Vogel, K.Stembera, L.Hennig, M.Findeisen, S.Giesa, P.Welzel, C.Tillier, C.Bonhomme, M.Lampilas
    Moenomycin analogues with long-chain amine lipid parts from reductive aminations
    Tetrahedron 57, 4147 (2001)

    U.Schuricht, L.Hennig, M.Findeisen, P.Welzel, D.Arigoni
    The biosynthesis of moenocinol, the lipid part of the moenomycin antibiotics
    Tetrahedron Lett. 42, 3835 (2001)

    H.Schürer, K.Stembera, D.Knoll, G.Mayer, M.Blind, H.-H.Förster, M.Famulok, U.Hahn
    Aptamers that Bind to the Antibiotic Moenomycin A
    Biorg.Med.Chem., 9, 2557 (2001)

    J.Zahra, L.Hennig, M.Findeisen, P.Welzel, D.Müller, W.S.Sheldrick
    Synthesis of a building block for phosphonate analogues of moenomycin A12
    Tetrahedron, 57, 9437 (2001)

    K.Stembera, A.Buchynskyy, S.Vogel, D.Knoll, A.A.Osman, J.A.Ayala, P.Welzel
    Moenomycin-mediated affinity purification of penicillin-binding protein 1b
    ChemBiochem, 4, 332 (2002)

    U.Eichelberger, I.Neundorf, L.Hennig, M.Findeiesen, S.Giesa, D.Müller, P.Welzel
    Synthesis of Analogues of the 2-O-Alkyl Glycerate Part of the Moenomycins
    Tetrahedron, 58, 545 (2002)

    U.Eichelberger, M.Mansourova, L.Hennig, M.Findeisen, S.Giesa, D.Müller, P.Welzel
    A cross metathesis-based synthesis of analogues of the 2-O-alkyl glycerate part of the moenomycins
    Tetrahedron, 57, 9737 (2001)

    A.  Buchynskyy, U.Kempin, S.Vogel, L.Hennig, M.Findeisen, D.Müller, S.Giesa, H.Knoll, P.Welzel
    Synthese of fluorescent derivatives of the antibiotic moenomycin A
    Eur.J.Org.Chem., 1163 (2002)

    A.Buchynskyy, K.Stembera, L.Hennig, M.Findeisen, S.Giesa, P.Welzel
    A Method for the Introduction of Reporter groups into Moenomycin A Based on Thiouronium Salt Chemistry
    Eur.J.Org.Chem., 1149 (2002)

    N.Wehofsky, R.Löser, A.Buchynskyy, P.Welzel, F.Bordusa
    Synthesising N-glycopeptides: A flexible approach on the basis of a highly specific protease
    Angew.Chem., in the press

    K.Stembera, S.Vogel, A.Buchynskyy, J.A.Ayala, P.Welzel
    A Surface Plasmon Resonance Analysis of the Interaction between the Antibiotic Moenomycin A with Penicillin-Binding protein 1b
    ChemBiochem, in the press

    M.Daghish, L.Hennig, M.Findeisen, S.Giesa, F.Schumer, H.Hennig, A.Beck-Sickinger, P.Welzel
    New photoaffinity labels based on Nakanishi´s aryltrifluoromethyl diazirine
    Angew.Chem., in the press

    T. Rühl, D. Volke, K. Stembera, Y. Hatanaka, H. Hennig, 
    F. Schumer, P. Welzel 
    Isoserine-based biotinylated photoaffinity probes that interact with penicillin-binding protein 1b
    Chem.Commun., submitted

    Buchynskyy, K. Stembera, D. Knoll, S. Vogel, U. Kempin, A. Biallaß (née Donnerstag), L. Hennig, M. Findeisen, D. Müller, P. Welzel
    Synthesis of Tools for Raising Antibodies Against Moenomycin Epitopes and Initial Immunological Studies
    Tetrahedron, accepted
     
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