Photochemische Reaktionen. 33. Mitteilung. Die Photoisomerisierung von 3-Oxo-Δ<sup>1;4</sup>-Steroiden in Dioxanlösung Strukturaufklärung der Photoisomeren und Bestimmung der Umlagerungs-Sequenzen
The photo-induced formation of ketonic and phenolic isomers from O-acetyl-1-dehydro-testosterone (1a) and from its 4-methyl homologue 1d in dioxane solution has been described earlier [8][9][13]. The present paper summarizes the findings which resulted in the course of further investigations, and which, in part, have been published in preliminary form [11][14] and in recent reviews [12]. This work
Photochemische Reaktionen 4. Mitteilung. Beeinflussung der photochemischen Isomerisierung gekreuzter Dienone durch Substituenten am Chromophor
作者:K. Weinberg、E. C. Utzinger、D. Arigoni、O. Jeger
DOI:10.1002/hlca.19600430132
日期:——
Irradiation of 1-dehydro-4-methyl-testosterone (IV) in dioxane solution affords as a single product an isomer, which on the basis of extensive degradation is shown to possess structure V. A similar photochemicaltransformation leads from 1-dehydro-2,4-dimethyl-testosterone (XXXVII) to the corresponding lumiproduct XXXVIII. Since it has been previously shown that 1-dehydro-testosterone (III) under the