Photochemische Reaktionen. 31. Mitteilung. [1]. Die photochemische Isomerisierung von C(-10)-diastereomeren 3-Oxo-?1;5-Steroiden
作者:B. Nann、H. Wehrli、K. Schaffner、O. Jeger
DOI:10.1002/hlca.19650480729
日期:——
The photochemical transformation of 3-oxo-17β-acetoxy-Δ1;5-androstadiene (2) and its 10α-diastereoisomer 7 has been investigated. With low conversion of 2, an isomer was produced for which structure 8 (6β-H) is proposed. After longer photolysis times, both compounds, 2 and 8, were consumed, and the four stereoisomeric photoproducts 9–12 were obtained. Products 9 and 10 on one hand, and 11 and 12 on
研究了3-氧代-17β-乙酰氧基-Δ1 ; 5-雄甾烷二烯(2)及其10α-非对映异构体7的光化学转化。在2的低转化率下,产生了异构体,针对该异构体提出了结构8(6β-H)。在更长的光解时间后,两种化合物2和8均被消耗,并获得了四种立体异构的光产物9-12。一方面产品9和10,另一方面11和12是光化学可互变的。二烯酮7产生非常相似的产物混合物,可以从中分离出酮10和12。此外,证明存在二烯酮异构体,该二烯酮异构体被分配了结构8(6α-H)。