3β,28-diacetoxy-30-nor-18-lupene-21ξ-ol 在
pyridiniumchlorochromate on aluminumoxide 作用下,
以
氯仿 为溶剂,
反应 0.75h,
以0.03 g的产率得到Acetic acid (3aR,5aR,5bR,9S,11aR)-9-acetoxy-1-ethyl-5a,5b,8,8,11a-pentamethyl-2-oxo-2,3,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-octadecahydro-cyclopenta[a]chrysen-3a-ylmethyl ester