21-acetoxy-17α-hydroxy-16β-methyl-6-methylene-4,9(11)-pregnadiene-3,20-dione 、
环己烯 在
钯 作用下,
以thus obtaining 830 mg of 21-acetoxy-17α-hydroxy-6α,16β-dimethyl-4,9(11)-pregnadiene-3,20-dione, mp 197°-199° C.的产率得到21-acetoxy-17α-hydroxy-6α,16β-dimethyl-4,9(11)-pregnadiene-3,20-dione