(1S,2s)-反式-1,2-环己二醇 、
(3aS,5S,6aR)-5-(2-Cyclohexyl-2-oxo-ethyl)-hexahydro-pentalen-2-one 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
生成
((1S,5S,6S)-3-Cyclohexyl-bicyclo[3.2.1]oct-3-en-6-yl)-acetic acid (1S,2S)-2-hydroxy-cyclohexyl ester 、 ((1R,5R,6R)-3-Cyclohexyl-bicyclo[3.2.1]oct-3-en-6-yl)-acetic acid (1S,2S)-2-hydroxy-cyclohexyl ester