AbstractA new efficient approach to the synthesis of Δ4,6‐3‐oxo‐19‐norsteroids is described. Starting from 3β, 17α‐diacyloxy‐20‐oxo‐Δ5‐pregnenes, the derivatives VIIIa and VIIIb of 6‐dehydro‐19‐norprogesterone have been synthesized, which exhibit high progestational activity. Modification of the procedure leads to the new group of steroidal Δ5(10),6‐dienes.
Synthese von A-Homo-19-norsteroiden. Über Steroide, 214. Mitteilung
作者:P. Wieland、G. Anner
DOI:10.1002/hlca.19680510814
日期:1968.10.31
Abstract3‐Oxo‐19‐mesyloxy‐Δ1; 4‐steroids and their 19‐chloro analogues are converted into 4‐oxo‐Δ1; 5(10)‐A‐homo‐19‐norsteroids by treatment with lithium and biphenyl in tetrahydrofuran solution.