11β,17,21-trihydroxy-pregn-4-ene-3,20-dione-bis-(O-methyl oxime ) 、
N,O-bis(diethylhydrogensilyl)trifluoroacetamide 生成 (8S,9S,10R,11S,13S,14S,17R)-11-((diethylsilyl)oxy)-2',2'-diethyl-10,13-dimethyl-1,6,7,8,9,10,11,12,13,14,15,16-dodecahydrospiro[cyclopenta[a]phenanthrene-17,4'-[1,3,2]dioxasilinane]-3,5'(2H)-dione O,O-dimethyl dioxime