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Photochemische Reaktionen. 76.Mitteilung [1]. UV.-Bestrahlung von 11-Oxo-Steroiden V Die Photoisomerisierung von 3,20-Diäthylendioxy-5α,14β,17α-pregnan

✍ Scribed by Peter Gull; Yoshihisa Saito; Hansuli Wehrli; Oskar Jeger


Publisher
John Wiley and Sons
Year
1974
Tongue
German
Weight
701 KB
Volume
57
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

The UV.‐isomerisation of 11‐oxo‐14β,17α‐pregnane 9 to the 11,19‐cyclo‐derivative 11 is described. In addition the Pb(OAc)~4~‐fragmentation of photoproduct 11 was investigated. 11 yielded besides the expected 11‐oxo‐19‐hydroxy‐pregnane 18 the novel 9,11‐seco‐11,19‐cyclosteroid 19. The structure of 19 was established by chemical transformations and subsequently confirmed by X‐ray analysis [2].


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✍ W. Graf; H. Berner; Frau L. Berner-Fenz; Frl. E. Gössinger; R. Imhof; H. Wehrli 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 German ⚖ 665 KB

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