3β,16β,22-trihydroxyisopohane 在
吡啶 、
chromium(VI) oxide 作用下,
反应 12.0h,
生成
(3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-3-(1-Hydroxy-1-methyl-ethyl)-5a,5b,8,8,11a,13b-hexamethyl-octadecahydro-cyclopenta[a]chrysene-4,9-dione 、 (3aS,4S,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-4-Hydroxy-3-(1-hydroxy-1-methyl-ethyl)-5a,5b,8,8,11a,13b-hexamethyl-icosahydro-cyclopenta[a]chrysen-9-one