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1

Syntheses and Reactions of 2,2-Disubstituted Cyclopentane-1,3-diones, 6. Conversion of 2-Methylcyclopentane-1,3-dione into 5-Methylcycloheptane-1,4-dione via 3-(1-Methyl-2,5-dioxocyclopentyl)propanal

Hans Schick, Birgit Roatsch, Hartmut Schwarz, André Hauser, Sigfrid Schwarz

Journal:

European Journal of Organic Chemistry

Year:

1992

Language:

english

File:

PDF, 453 KB

english, 1992

2

9α, 11α -tritiummarkierte östradiolderivate

Johannes Römer, Sigfrid Schwarz, Gisela Weber

Journal:

Journal of Labelled Compounds and Radiopharmaceuticals

Year:

1981

File:

PDF, 480 KB

1981

3

2,2-disubstituierte cyclopentan-1,3-dione—2: Untersuchung der regioselektivität von alkylierungs-reaktionen an 2-methyl-cyclopentan-1,3-dion

Hans Schick, Hartmut Schwarz, Angelika Finger, Sigfrid Schwarz

Journal:

Year:

1982

File:

PDF, 576 KB

1982

4

Synthesis of 13-ethyl-11-methylene-18,19-dinor-17α-pregn-4-en-20-yn-17-ol (desogestrel) and its main metabolite 3-oxo desogestrel

Sigfrid Schwarz, Sven Ring, Gisela Weber, Gerhard Teichmüller, Hans-Joachim Palme, Carmen Pfeiffer, Bernd Undeutsch, Bernd Erhart, Detlef Grawe

Journal:

Year:

1994

Language:

english

File:

PDF, 903 KB

english, 1994

5

Sterode. VIII. Darstellung Racemischer und enantiomerer 19-Norsteroide

Hans Joachim Siemann, Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1969

Language:

german

File:

PDF, 322 KB

german, 1969

6

Steroide. XII [1]. Steroid-alkansulfonate

Dr. Sigfrid Schwarz, Gisela Weber

Journal:

Advanced Synthesis & Catalysis

Year:

1970

Language:

german

File:

PDF, 392 KB

german, 1970

7

Die Bestimmung der Optischen Reinheit an Zwischenprodukten der Prostaglandinsynthese mit Hilfe der NMR-Spektroskopie

Dr. Rudolf Zepter, Dipl.-Phys. Manfred Wentzke, Dr. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1983

Language:

german

File:

PDF, 249 KB

german, 1983

8

Nucleophilic Substitution of Chloride by Acetate in polyethylene glycol 400

Dr. Fritz Theil, Prof. Dr. sc. nat. Hans Schick, Dr. sc. nat. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1985

File:

PDF, 211 KB

1985

9

Synthesis of Methyl 7-Bromo-5-heptynoate - a building block for the carboxylic side chain of prostaglandins

Dr. Fritz Thell, Diplomchemikerin Mechthild Henning, Prof. Dr. sc. nat. Hans Schick, Dr. sc. nat. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1985

Language:

english

File:

PDF, 375 KB

english, 1985

10

Prostaglandins and Prostaglandin Intermediates. XVII [1]. Synthesis of the Main Metabolite of the PGF2α Analogue Cloprostenol

Dr. Fritz Theil, Dr. Burkhard Costisella, Dr. Rainer Mahrwald, Prof. Dr. habil. Hans Gross, Prof. Dr. sc. nat. Hans Schick, Dr. sc. nat. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1986

Language:

english

File:

PDF, 374 KB

english, 1986

11

The Oxidation of Primary Trimethylsilyl Ethers to Aldehydes – a selective conversion of a primary hydroxy group into an aldehyde group in the presence of a secondary hydroxy group

Dr. Rainer Mahrwald, Dr. Fritz Theil, Prof. Dr. sc. nat. Hans Schick, Dr. sc. nat. Sigfrid Schwarz, Dr. Hans-Joachim Palme, Chemie-Ingenieur Gisela Weber

Journal:

Advanced Synthesis & Catalysis

Year:

1986

Language:

english

File:

PDF, 403 KB

english, 1986

12

The aldol reaction of substituted cyclopentane carbaldehydes with 2-heptanone. A novel approach to the construction of the alkyl side chain of prostaglandins

Dr. Rainer Mahrwald, Prof. Dr. sc. nat. Hans Schick, Dr. sc. nat. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1987

Language:

english

File:

PDF, 416 KB

english, 1987

13

Enzymes in organic synthesis. 2. Synthesis of enantiomerically pure prostaglandin intermediates by Enzymatic Hydrolysis of (1SR, 5RS, 6RS, 7RS)-7-acetoxy-6-acetoxymethyl-2-oxabicyclo[3.3.0]octan-3-one

Dr. Fritz Theil, Prof. Dr. Sc. Nat. Hans Schick, Dr. Peter Nedkov, Dr. Monika Böhme, Dr. Barbara Häfner, Prof. Dr. Sc. Nat. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1988

Language:

english

File:

PDF, 400 KB

english, 1988

14

Prostaglandins and prostaglandin intermediates. 25. Synthesis of PGF2α Intermediates by addition of 1-metalated hept-1-ynes to a substituted cyclopentanecarbaldehyde bearing already the complete carboxylic side chain

Dr. Rainer Mahrwald, Prof. Dr. sc. nat. Hans Schick, Dr. Ludmila L. Vasil'eva, Dr. Kasimir K. Pivnitsky, Chemieingenieur Gisela Weber, Prof. Dr. sc. nat. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1990

Language:

english

File:

PDF, 449 KB

english, 1990

15

Prostaglandins and prostaglandin intermediates. Part 26. A novel route to PGF2α using triisopropoxy-hept-1-ynyl-titanium as precursor for the β-side chain

Dr. Rainer Mahrwald, Prof. Dr. Hans Schick, Dr. Kasimir K. Pivnitsky, Prof. Dr. Sigfrid Schwarz

Journal:

Advanced Synthesis & Catalysis

Year:

1990

Language:

english

File:

PDF, 777 KB

english, 1990

16

Zur Umwandlung von Steroiden mit Mikroorganismen

Alfred Schubert, Karl Heller, Dieter Onken, Sigfrid Schwarz, Rudolf Siebert, Joachim Zaumseil

Journal:

Zeitschrift für Chemie

Year:

1962

Language:

german

File:

PDF, 1.04 MB

german, 1962

17

Sulfamate des 17α-Äthinylöstradiols

Sigfrid Schwarz, Gisela Weber, Fritz Küuhner

Journal:

Zeitschrift für Chemie

Year:

1970

Language:

german

File:

PDF, 243 KB

german, 1970

18

Steroidsulfamate

Sigfrid Schwarz, Gisela Weber

Journal:

Zeitschrift für Chemie

Year:

1974

File:

PDF, 241 KB

1974

19

Beitrag zur Cyclisierung von 3-Methoxy-8,14-seco-östra-1,3,5(10), 9(11)-tetraen-17β-ol-14-on

Gerhard Langbein, Sigfrid Schwarz

Journal:

Zeitschrift für Chemie

Year:

1975

File:

PDF, 267 KB

1975

20

Steroidsulfamate; Phasentransfer-katalysierte Veresterung von Östrogenen mit Sulfonylchloriden

Sigfrid Schwarz, Gisela Weber

Journal:

Zeitschrift für Chemie

Year:

1975

File:

PDF, 374 KB

1975

21

Über eine milde oxydative Spaltung von CC-Doppelbindungen mit Chrom(VI)-Verbindungen;1) Darstellung eines chiralen Synthons für 8-Methylprostanoide aus Zwischenprodukten der Totalsynthese von 19-nor-Steroiden

Sigfrid Schwarz, Constanze Carl, Hans Schick

Journal:

Zeitschrift für Chemie

Year:

1978

Language:

german

File:

PDF, 247 KB

german, 1978

22

Synthese eines Zwischenprodukts für 8-Methyl-prostaglandin C2

Sigfrid Schwarz, Joachim Schaumann, Georg Truckenbrodt, Gisela Weber, Manfred Meyer, Hans Schick, Hans-Peter Welzel

Journal:

Zeitschrift für Chemie

Year:

1979

Language:

german

File:

PDF, 261 KB

german, 1979

23

Nucleophile Acylierungen unter Verwendung von α-Aminonitrilen; Synthesen von 4-Oxocarbonsäuren durch Addition von α,β-ungesättigten Carbonsäureestern an metallierte α-Aminonitrile

Hans Schick, Fritz Theil, Heinz Jablokoff, Sigfrid Schwarz

Journal:

Zeitschrift für Chemie

Year:

1981

File:

PDF, 255 KB

1981

24

Umwandlung von 2-(Alk-2-inyl)-2-alkyl-cyclopentan-1,3-dionen in 2,3,5-trisubstituierte Cyclopent-2-en-1-one

Hans Schick, Birgit Pogoda, Sigfrid Schwarz

Journal:

Zeitschrift für Chemie

Year:

1982

File:

PDF, 152 KB

1982

25

Mikrobielle Transformation von Chorhaeptan-2-on; Vorläufige Ergebnisse zur Darstellung eines chiralen Phosphoniumsalzes für Prostaglandinsynthesen

Sigfrid Schwarz, Georg Truckenbrodt, Hans Schick, Johannes Depne

Journal:

Zeitschrift für Chemie

Year:

1982

Language:

german

File:

PDF, 267 KB

german, 1982

26

Influence of subchronic administration of oestradiol, ethinyloestradiol and oestradiol sulphamate on bile flow, bile acid excretion, and liver and biliary glutathione status in rats

Astrid Barth, Walter Elger, Birgitt Schneider, Sigfrid Schwarz

Journal:

Archives of Toxicology

Year:

1997

Language:

english

File:

PDF, 1.01 MB

english, 1997

27

Ionic hydrogenation of 3-methoxy-14α,15α-methylenestra-1,3,5(10),8-tetraen-17α-ol: A correction

Sigfrid Schwarz, Bernd Undeutsch, Helmar Görls

Journal:

Year:

1996

Language:

english

File:

PDF, 183 KB

english, 1996

28

Synthesis and conformation of four 16,17-diols in the 3-methoxy-13α-estra-1,3,5(10)-triene series

Sigfrid Schwarz, Bruno Schönecker, Kai Fritsche, Andreas Poser, Corinna Lange, Wolfgang Günther, Stephan Göttke, Helmar Görls, Siegfried Bäsler

Journal:

Year:

2003

Language:

english

File:

PDF, 266 KB

english, 2003

29

The remarkable influence of steroid A/B-ring junction on the Wittig olefination reaction of the 11-oxo group: Towards the synthesis of 5α- and 5β-oriented Δ3-isomers of desogestrel

Sven Ring, Gisela Weber, Alexander Hillisch, Sigfrid Schwarz

Journal:

Year:

1998

Language:

english

File:

PDF, 149 KB

english, 1998

30

Synthesis of estrogen sulfamates: Compounds with a novel endocrinological profile

Sigfrid Schwarz, Ina Thieme, Margit Richter, Bernd Undeutsch, Harry Henkel, Walter Elger

Journal:

Year:

1996

Language:

english

File:

PDF, 622 KB

english, 1996

31

Novel “scavestrogens” and their radical scavenging effects, iron-chelating, and total antioxidative activities: Δ8,9-dehydro derivatives of 17α-estradiol and 17β-estradiol

Wolfgang Römer, Michael Oettel, Peter Droescher, Sigfrid Schwarz

Journal:

Year:

1997

Language:

english

File:

PDF, 665 KB

english, 1997

32

Novel estrogens and their radical scavenging effects, iron-chelating, and total antioxidative activities: 17α-substituted analogs of Δ9(11)-dehydro-17β-estradiol

Wolfgang Römer, Michael Oettel, Bernd Menzenbach, Peter Droescher, Sigfrid Schwarz

Journal:

Year:

1997

Language:

english

File:

PDF, 781 KB

english, 1997

33

The steroid story of Jenapharm: From the late 1940s to the early 1970s

Sigfrid Schwarz, Dieter Onken, Alfred Schubert

Journal:

Year:

1999

Language:

english

File:

PDF, 378 KB

english, 1999

34

17β-Hydroxy-11α-(3′-sulfanylpropyl)oxy-estra-1,3,5(10)-trien-3-yl sulfamate – a novel hapten structure: toward the development of a specific enzyme immunoassay (EIA) for estra-1,3,5(10)-triene-3-yl sulfamates

Sigfrid Schwarz, Matthias Schumacher, Anita Nanninga, Gisela Weber, Ina Thieme, Bernd Undeutsch, Walter Elger

Journal:

Year:

1999

Language:

english

File:

PDF, 179 KB

english, 1999

35

Effects of estradiol and estradiol sulfamate on the uterus of ovariectomized or ovariectomized and hypophysectomized rats

Lena Sahlin, Walter Elger, Sonja Åkerberg, Britt Masironi, Gudrun Reddersen, Birgitt Schneider, Sigfrid Schwarz, Bo Freyschuss, Håkan Eriksson

Journal:

The Journal of Steroid Biochemistry and Molecular Biology

Year:

2000

Language:

english

File:

PDF, 163 KB

english, 2000

36

Effects of estradiol and estradiol sulfamate on the liver of ovariectomized or ovariectomized and hypophysectomized rats

Lena Sahlin, Walter Elger, Annemarie Hedden, Monica Lindberg, Gudrun Reddersen, Birgitt Schneider, Sigfrid Schwarz, Bo Freyschuss, Håkan Eriksson

Journal:

The Journal of Steroid Biochemistry and Molecular Biology

Year:

2002

Language:

english

File:

PDF, 515 KB

english, 2002

37

Comparative toxicology of ethinylestradiol (EE) and a new estrogen without 17-alpha ethinyl group: 17-beta-estradiol-3-sulfamate (J 995)

Holger Zimmerman, Walter Elger, Michael Oettel, Sigfrid Schwarz

Journal:

Toxicology Letters

Year:

1996

Language:

english

File:

PDF, 125 KB

english, 1996

38

10.1071/RD01029

Elger, W., Barth, A., Hedden, A., Reddersen, G., Ritter, P., Schneider, B., Züchner, J., Krahl, E., Müller, K., Oettel, M., Schwarz, Sigfrid

Journal:

Reproduction Fertility and Development

Year:

2001

Language:

english

File:

PDF, 350 KB

english, 2001

39

Sulfamates of various estrogens are prodrugs with increased systemic and reduced hepatic estrogenicity at oral application

Elger, Walter, Schwarz, Sigfrid, Hedden, Annemarie, Reddersen, Gudrun, Schneider, Birgitt

Journal:

The Journal of Steroid Biochemistry and Molecular Biology

Year:

1995

Language:

english

File:

PDF, 850 KB

english, 1995

40

Intramolecular acetalization of 5-hydroxy ketones and enones. A novel transformation of important prostaglandin intermediates under acidic conditions

Schwarz, Sigfrid, Weber, Gisela, Palme, Hans-Joachim, Wentzke, Manfred, Reck, G�nther, Schick, Hans

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1990

Language:

english

File:

PDF, 687 KB

english, 1990

41

Scavestrogen sulfamates: correlation between estrone sulfatase inhibiting and antioxidant effects

Römer, Wolfgang, Oettel, Michael, Schwarz, Sigfrid

Journal:

Canadian Journal of Physiology and Pharmacology

Year:

1998

File:

PDF, 219 KB

1998

42

Novel oestrogen sulfamates: a new approach to oral hormone therapy

Elger, Walter, Palme, Hans-Joachim, Schwarz, Sigfrid

Journal:

Expert Opinion on Investigational Drugs

Year:

1998

Language:

english

File:

PDF, 305 KB

english, 1998

43

A New Synthesis of an Important Prostaglandin Intermediate by Selective Oxidation of a Trimethylsilylated Primary Alcohol to the Corresponding Aldehyde

Mahrwald, Rainer, Theil, Fritz, Schick, Hans, Palme, Hans-Joachim, Nowak, Heidrun, Weber, Gisela, Schwarz, Sigfrid

Journal:

Year:

1987

File:

PDF, 170 KB

1987

44

ChemInform Abstract: STEROIDE 13. MITT. STEROIDSULFAMATE

SCHWARZ, SIGFRID, WEBER, GISELA

Journal:

Chemischer Informationsdienst

Year:

1974

File:

PDF, 105 KB

1974

45

ChemInform Abstract: STEROIDE 11. MITT. SULFAMATE DES 17ALPHA-AETHINYLOESTRADIOLS

SCHWARZ, SIGFRID, WEBER, GISELA, KUEHNER, FRITZ

Journal:

Chemischer Informationsdienst. Organische Chemie

Year:

1971

File:

PDF, 118 KB

1971

46

ChemInform Abstract: STEROIDE 16. MITT. CYCLISIERUNG VON 3-METHOXY-8,14-SECO-OESTRA-1,3,5(10),9(11)-TETRAEN-17BETA-OL-14-ON

LANGBEIN, GERHARD, SCHWARZ, SIGFRID

Journal:

Chemischer Informationsdienst

Year:

1975

File:

PDF, 162 KB

1975

47

ChemInform Abstract: STEROIDE 17. MITT. STEROIDSULFAMATE 3. MITT. PHASENTRANSFER-KATALYISERTE VERESTERUNG VON OESTROGENEN MIT SULFONYLCHLORIDEN

SCHWARZ, SIGFRID, WEBER, GISELA

Journal:

Chemischer Informationsdienst

Year:

1975

File:

PDF, 112 KB

1975

48

ChemInform Abstract: STEROIDS. XVIII. 8,14-SECOSTEROIDS

SCHWARZ, SIGFRID, HENKEL, HARRY, SCHICK, HANS

Journal:

Chemischer Informationsdienst

Year:

1976

Language:

german

File:

PDF, 239 KB

german, 1976

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