Sigfrid Schwarz

965 total citations
75 papers, 782 citations indexed

About

Sigfrid Schwarz is a scholar working on Organic Chemistry, Molecular Biology and Genetics. According to data from OpenAlex, Sigfrid Schwarz has authored 75 papers receiving a total of 782 indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Organic Chemistry, 35 papers in Molecular Biology and 19 papers in Genetics. Recurrent topics in Sigfrid Schwarz's work include Steroid Chemistry and Biochemistry (21 papers), Estrogen and related hormone effects (18 papers) and Asymmetric Synthesis and Catalysis (17 papers). Sigfrid Schwarz is often cited by papers focused on Steroid Chemistry and Biochemistry (21 papers), Estrogen and related hormone effects (18 papers) and Asymmetric Synthesis and Catalysis (17 papers). Sigfrid Schwarz collaborates with scholars based in Germany, Sweden and Bulgaria. Sigfrid Schwarz's co-authors include W. Elger, Hans Schick, M. Öettel, Birgitt Schneider, Gudrun Reddersen, Wolfgang Römer, Fritz Theil, Rainer Mahrwald, Heiko Zimmermann and C. Moore and has published in prestigious journals such as Cellular and Molecular Life Sciences, Tetrahedron and Synthesis.

In The Last Decade

Sigfrid Schwarz

70 papers receiving 731 citations

Peers

Sigfrid Schwarz

GENET

EDM

PHARM

Marisa Cabeza Mexico

Rafał R. Siciński United States

Eugene Bratoeff Mexico

Charles D. Jones United States

Henry Laurent Australia

Michael L. Mohler United States

Dujin Zhou United States

N. YONEDA Japan

Katsutoshi Yamada Japan

Michael Wurl Italy

Marisa Cabeza Mexico

Sigfrid Schwarz

123 ×0.4

404 ×1.2

281 ×1.0

GENET

379 ×3.1

EDM

78 ×1.1

PHARM

Citations per year, relative to Sigfrid Schwarz Sigfrid Schwarz (= 1×) peers Marisa Cabeza

Countries citing papers authored by Sigfrid Schwarz

Since Specialization

Citations

This map shows the geographic impact of Sigfrid Schwarz's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sigfrid Schwarz with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sigfrid Schwarz more than expected).

Fields of papers citing papers by Sigfrid Schwarz

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sigfrid Schwarz. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sigfrid Schwarz. The network helps show where Sigfrid Schwarz may publish in the future.

Co-authorship network of co-authors of Sigfrid Schwarz

This figure shows the co-authorship network connecting the top 25 collaborators of Sigfrid Schwarz. A scholar is included among the top collaborators of Sigfrid Schwarz based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sigfrid Schwarz. Sigfrid Schwarz is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Schwarz, Sigfrid, et al.. (2003). Synthesis and conformation of four 16,17-diols in the 3-methoxy-13α-estra-1,3,5(10)-triene series. Steroids. 68(2). 113–123. 6 indexed citations

Klinger, W, Amelie Lupp, E. Karge, et al.. (2002). Estradiol, testosterone, dehydroepiandrosterone and androstenedione: novel derivatives and enantiomers. Interactions with rat liver microsomal cytochrome P450 and antioxidant/radical scavenger activities in vitro. Toxicology Letters. 128(1-3). 129–144. 22 indexed citations

Sahlin, Lena, W. Elger, Gudrun Reddersen, et al.. (2002). Effects of estradiol and estradiol sulfamate on the liver of ovariectomized or ovariectomized and hypophysectomized rats. The Journal of Steroid Biochemistry and Molecular Biology. 80(4-5). 457–467. 14 indexed citations

Elger, W., Gudrun Reddersen, Birgitt Schneider, et al.. (2001). Estrogen sulfamates: a new approach to oral estrogen therapy. Reproduction Fertility and Development. 13(4). 297–305. 20 indexed citations

Sahlin, Lena, W. Elger, Britt Masironi, et al.. (2000). Effects of estradiol and estradiol sulfamate on the uterus of ovariectomized or ovariectomized and hypophysectomized rats. The Journal of Steroid Biochemistry and Molecular Biology. 74(3). 99–107. 12 indexed citations

Schwarz, Sigfrid. (1999). 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. Steroids. 64(7). 460–471. 6 indexed citations

Schwarz, Sigfrid. (1999). The steroid story of Jenapharm: From the late 1940s to the early 1970s. Steroids. 64(7). 439–445. 8 indexed citations

Hoffmann, Hermann, C. Moore, Heiko Zimmermann, et al.. (1998). Approaches to the replacement of ethinylestradiol by natural 17β-estradiol in combined oral contraceptives. Experimental and Toxicologic Pathology. 50(4-6). 458–464. 39 indexed citations

Hillisch, Alexander, et al.. (1998). 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. Steroids. 63(1). 21–27. 2 indexed citations

10.

Elger, W., et al.. (1997). Influence of subchronic administration of oestradiol, ethinyloestradiol and oestradiol sulphamate on bile flow, bile acid excretion, and liver and biliary glutathione status in rats. Archives of Toxicology. 71(7). 443–449. 9 indexed citations

11.

Römer, Wolfgang, et al.. (1997). Novel “scavestrogens” and their radical scavenging effects, iron-chelating, and total antioxidative activities: Δ8,9-dehydro derivatives of 17α-estradiol and 17β-estradiol. Steroids. 62(3). 304–310. 51 indexed citations

12.

Römer, Wolfgang, et al.. (1997). Novel estrogens and their radical scavenging effects, iron-chelating, and total antioxidative activities: 17α-substituted analogs of Δ9(11)-dehydro-17β-estradiol. Steroids. 62(11). 688–694. 51 indexed citations

13.

Schwarz, Sigfrid, et al.. (1996). Synthesis of estrogen sulfamates: Compounds with a novel endocrinological profile. Steroids. 61(12). 710–717. 28 indexed citations

14.

Schwarz, Sigfrid & W. Elger. (1996). Estrogen sulfamates, a novel approach to oral contraception and hormone replacement therapy. Drugs of the Future. 21(1). 49–49. 12 indexed citations

15.

Elger, W., et al.. (1995). Sulfamates of various estrogens are prodrugs with increased systemic and reduced hepatic estrogenicity at oral application. The Journal of Steroid Biochemistry and Molecular Biology. 55(3-4). 395–403. 133 indexed citations

16.

Theil, Fritz, et al.. (1988). 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. Journal für praktische Chemie. 330(6). 893–899. 5 indexed citations

17.

Schwarz, Sigfrid, et al.. (1984). Prostaglandine und Prostaglandinvorstufen. Untersuchungen zur Synthese von 8‐Methylprostansäurederivaten. Journal für praktische Chemie. 326(4). 667–675. 3 indexed citations

18.

Schwarz, Sigfrid, et al.. (1982). Mikrobielle Transformation von Chorhaeptan‐2‐on; Vorläufige Ergebnisse zur Darstellung eines chiralen Phosphoniumsalzes für Prostaglandinsynthesen. Zeitschrift für Chemie. 22(5). 187–188. 3 indexed citations

19.

Schick, Hans, et al.. (1977). Synthese von substituierten γ‐Ketosäuren durch alkalische Ringöffnung von 1,1‐disubstituierten Cyclopentandionen‐(2,5). Journal für praktische Chemie. 319(2). 213–218. 5 indexed citations

20.

Schwarz, Sigfrid, et al.. (1970). Steroide. XII [1]. Steroid‐alkansulfonate. Journal für praktische Chemie. 312(4). 720–727. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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