rac-(4R,4aR,10aS)-4a-hydroxy-4-methyl-2,3,4,4a,9,10-hexahydro-1H-4,10a-ethanophenanthren-12-one 在
chromium(VI) oxide 作用下,
以
溶剂黄146 为溶剂,
反应 72.0h,
以84%的产率得到(+/-)-4aβ-hydroxy-4α-methyl-1,2,3,4,4a,10a-hexahydro-4β,10aβ-ethanophenanthrene-9,12(10H)-dione