((1S,2S,4aR,5R,8aR)-5-((4-(hydroxy)-5,6-dimethyl-2-oxo-2H-pyran-3-yl)methyl)-1,4a-dimethyl-6-methylene-1-(4-methylpent-3-enyl)decahydronaphthalen-2-yl) hexanoate 、
三甲基硅烷化重氮甲烷 在
N,N-二异丙基乙胺 作用下,
以
甲醇 、
正己烷 、
乙腈 为溶剂,
以26%的产率得到(1S,2S,4aR,5R,8aR)-5-((2-methoxy-5,6-dimethyl-4-oxo-4H-pyran-3-yl)methyl)-1,4a-dimethyl-6-methylene-1-(4-methylpent-3-enyl)decahydronaphthalen-2-yl hexanoate