L. Simbi et Fr. Vanheerden, A PROCEDURE FOR THE PREPARATION OF CARDIOACTIVE STEROID PRECURSORS - SYNTHESIS OF BETA-ACETOXY-21-HYDROXY-5-ALPHA-PREGN-14-EN-20-ONE, Journal of the Chemical Society. Perkin transactions. I, (3), 1997, pp. 269-273
The efficient preparation of an important precursor in the synthesis o
f cardioactive steroids is reported. The key step, the introduction of
a 21-hydroxy group into a 14,15-dehydropregnane derivative, is accomp
lished by reaction of the enol ether with dimethyldioxirane.