888955-94-0Relevant articles and documents
Synthesis of 7-substituted-5-androstene derivatives promoted by SmI 2
Gu, Qin,Zheng, Yun-Hong,Li, Yuan-Chao
, p. 96 - 101 (2006)
The 7-substituted-5-androstene derivatives 2a-10a and 2b-10b were prepared by reaction of 3β,17β-di(tert-butyldimethylsilyloxy)-5-androsten-7-one 1 with different organic halides. The resulting 7α- and 7β-isomers were carefully separated by column chromat
Two novel approaches toward stereoselective introduction of β-hydroxymethyl group at the C-7 position of 5-androstene
Gu, Qin,Zheng, Yun-Hong,Li, Yuan-Chao
, p. 975 - 978 (2006)
Two novel approaches to stereoselective introduction of 7β-hydroxymethyl group onto 5-androstene have been developed. In the first approach, coupling of benzyloxymethyl chloride with the 7-carbonyl group of 1 mediated by SmI2 gives, after deben