V. Platonov
Dec 31, 1969
Citations
5
Influential Citations
56
Citations
Journal
Journal name not available for this finding
Abstract
11 beta ,21-Dihydroxypregna-1,4,17(20)-triene-3-one 21-acetate (0) is epoxidized, followed by ring opening and hydrolysis to give 11 beta ,20,21-trihydroxypregna-1,4,16-triene-3-one 21-acetate (III), an intermediate in the synthesis of betamethasone, in improved yields.