Synthesis of hydroxylated steroid hormones via conjugate addition of a silyl-cuprate reagent
作者:Diana Garside、David N. Kirk、Norman M. Waldron
DOI:10.1016/0039-128x(94)90102-3
日期:1994.12
several hydroxylated steroids via conjugate addition of Fleming's silyl-cuprate reagent, (PhMe2Si)2CuLi, a masked hydroxyl group, to the appropriate enone was studied. By this means 7 alpha-hydroxytestosterone (7) was obtained in good yield from 17 beta-hydroxyandrosta-4,6-dien-3-one (1a), though similar reactions on 17 beta-hydroxyandrosta-1,4-dien-3-one (8) gave a low yield of 1 alpha-hydroxytestosterone
In view of the finding that 5α-pregnane-3β, 5, 6β, 16β, 20α-pentol (POL) shows an interesting sodium excreting activity similar to that of SEF in the animal test, a number of polyoxygenated pregnanes possessing the hydroxyl or the carbonyl groups at the positions of C-3, C-5, C-6, C-16, and C-20 were synthesized. Syntheses of 3β, 5, 6β, 16α-tetrahydroxy-5α-pregnan-20-one-a hybrid compound of POL and SEF-was also described.