Synthesis of 6α-substituted (1S, 7aS)-(+)-1-t-butoxy-7a-methyl-2, 3, 5, 6, 7, 7a-hexahydroinden-5-ones
Sun Lin;Xiong Yifeng;Wu Jianhua;Cai Zuyun
Acta Chimica Sinica . 1991, (4): 406 -411 .