依普利酮中间体

依普利酮

(7R,8R,10S,13S,14S,17R)-3-hydroxy-10,13-dimethyl-5'-oxo-1,2,3,4',5',6,7,8,10,12,13,14,15,16-tetradecahydro-3'H-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-7-carbaldehyde

17β-hydroxypregna-4,9(11)-dien-3-one-7α,21-dicarboxylic acid γ-lactone

7α-(ethoxycarbonyl)-3-oxo-17α-pregna-4,9(11)-diene-21,17-carbolactone