Synthesis of 11 β-Hydroxy-16 β-methyl-16 α,17 α-methylene- pregna-1,4-dien-3,20-dione
YANG Bing,YANG Jun,WENG Ling-Ling*,ZHENG Hu
Chin. J. Org. Chem. . 2006, (06): 835 -838 .