重氮甲烷 、
(5R)-2-[(3S,4R,5S,8S)-4-hydroxy-8-methoxy-3,5-dimethyl-8-(3-phenylmethoxyphenyl)oct-1-ynyl]-3,3,5-trimethyl-6-oxocyclohexene-1-carboxylic acid 以
乙醚 为溶剂,
生成 (R)-2-[(3S,4R,5S,8S)-8-(3-Benzyloxy-phenyl)-4-hydroxy-8-methoxy-3,5-dimethyl-oct-1-ynyl]-3,3,5-trimethyl-6-oxo-cyclohex-1-enecarboxylic acid methyl ester