A new route to polyoxygenate C and D rings of steroids by oxidation of a Δ8,14-diene steroid with the methyltrioxorhenium–H2O2–urea system
作者:Donato Sica、Domenica Musumeci、Franco Zollo、Simona De Marino
DOI:10.1039/b103389c
日期:——
CHCl3 we isolate two new sterols, 9β-hydroxy-15-oxo-5α-cholest-8(14)-en-3β-yl acetate 3 and 9α,11α,15α-trihydroxy-5α-cholest-8(14)-en-3β-yl acetate 7, while oxidation in Et2O in the presence of pyridine ligand allows us to isolate the new epoxysteroid 9α,11α-epoxy-15α-hydroxy-5α-cholest-8(14)-en-3β-yl acetate 13. The structure of all new steroids is secured on the basis of chemical evidence and interpretation