(1S,7aS)-1-tert-butoxy-7a-methyl-1,2,3,6,7,7a-hexahydro-5H-inden-5-one 、
3,5-dimethoxyphenethyl tosylate 在
sodium hydride 作用下,
以
乙二醇二甲醚 为溶剂,
以85%的产率得到(+)-(1S,7aS)-1-tert-Butoxy-4-<2-(3,5-dimethoxyphenyl)ethyl>-1,2,3,6,7,7a-hexahydro-7a-methyl-5H-inden-5-on