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Ulrich Kerb

Hoffmann-La Roche

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Cellular and Molecular Life Sciences | 1966

The synthesis of ecdysone

Andre Furlenmeier; A. Fürst; Albert Langemann; Guy Waldvogel; P. Hocks; Ulrich Kerb; Rudolf Wiechert

Ecdyson, ein Häutungshormon der Insekten, wurde ausgehend von Ergosterin in 14 Stufen synthetisiert. Wesentliche Zwischenprodukte waren (20S)-2β, 3β-Diacetoxy-20-formyl-5α-pregn-7-en-6-on und (22R)-2β, 3β-Diacetoxy-14, 22-dihydroxy-25-(tetrahydropyran-2-yloxy)-5α-cholest-7-en-6-on.

Cellular and Molecular Life Sciences | 1971

Zur Synthese des Batrachotoxinins: Synthese von 3 β -Acetoxy-16 β , 20 β -dihydroxy-4′-methyl-18-nor-5 β , 14 β -pregnano[13,14-f]hexahydro-1′,4'-oxazepin-3′-on(20a)

Ulrich Kerb; H. D. Berndt; U. Eder; Rudolf Wiechert; P. Buchschacher; Andre Furlenmeier; A. Fürst; Marcel Muller

The synthesis of 3β-acetoxy-16β, 20β-dihydroxy-4′-methyl-18-nor-5β, 14β-pregnano[13,14-f]hexahydro-1′, 4′-oxazepin-3′-one (20a) is described.

Helvetica Chimica Acta | 1967

Zur Synthese des Ecdysons IX. Mitteilung über Insektenhormone

Andre Furlenmeier; A. Fürst; Albert Langemann; Guy Waldvogel; P. Hocks; Ulrich Kerb; Rudolf Wiechert

Helvetica Chimica Acta | 1966

Zur Synthese des Ecdysons. IV. Mitteilung über Insektenhormone. Die Synthese des natürlichen Häutungshormons

Ulrich Kerb; G. Schulz; P. Hocks; Rudolf Wiechert; Andre Furlenmeier; A. Fürst; Albert Langemann; Guy Waldvogel

Helvetica Chimica Acta | 1966

Zur Synthese des Ecdysons. III. Mitteilung über Insektenhormone. Synthesen von 2β, 3β, 14α-Trihydroxy-6-keto-Δ7-A|B-cis-Steroiden†

Andre Furlenmeier; A. Fürst; Albert Langemann; Guy Waldvogel; Ulrich Kerb; P. Hocks; Rudolf Wiechert

Helvetica Chimica Acta | 1966

Zur Synthese des Ecdysons. II. Mitteilung über Insektenhormone Synthesen von 2β, 3β‐Dihydroxy‐6‐keto‐A|B‐cis‐Steroiden

Rudolf Wiechert; Ulrich Kerb; P. Hocks; Andre Furlenmeier; A. Fürst; Albert Langemann; Guy Waldvogel

Archive | 1978

Novel D-homosteroids

A. Fürst; Marcel Muller; Ulrich Kerb; Rudolf Wiechert

Archive | 1981

D-HOMO STEROIDS, THEIR UTILIZATION AND PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

Leo Alig; A. Fürst; Peter Keller; Marcel Muller; Ulrich Kerb; Rudolf Wiechert

Archive | 1979

D-homosteroids, process for their preparation

Leo Alig; A. Fürst; Marcel Muller; Ulrich Kerb; Rudolf Wiechert

Archive | 1974

6β,7β-Epoxy-1α,2α-methylen-D-homo-4-pregnen-3,20-diones

A. Fürst; Marcel Muller; Leo Alig; Peter Keller; Ulrich Kerb; Rudolf Wiechert

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A. Fürst

Hoffmann-La Roche

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Rudolf Wiechert

Hoffmann-La Roche

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Andre Furlenmeier

Hoffmann-La Roche

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Marcel Muller

Hoffmann-La Roche

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Albert Langemann

Hoffmann-La Roche

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Guy Waldvogel

Hoffmann-La Roche

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P. Hocks

Hoffmann-La Roche

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Leo Alig

Hoffmann-La Roche

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Peter Keller

Hoffmann-La Roche

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Albert Jager

Hoffmann-La Roche

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