(4R,5R,7S,8S,12R)-4,7-Bis-(1-ethoxy-ethoxy)-5-isopropyl-8,12-dimethyl-15-oxa-bicyclo[12.1.0]pentadecane-2-carboxylic acid methyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 4.0h,
以70%的产率得到(E)-(5R,9S,10S,12R,13R)-10,13-Bis-(1-ethoxy-ethoxy)-3-hydroxy-12-isopropyl-5,9-dimethyl-cyclotetradec-1-enecarboxylic acid methyl ester