(7-methyl-5,9-dihydro-6,8-dioxa-benzocyclohepten-7-yl)-acetaldehyde 、 (1R,3S,4S,6S)-6-(1-Ethoxy-ethoxy)-3,4-dimethyl-bicyclo[2.2.1]heptan-2-one 在
lithium diisopropyl amide 作用下,
以
四氢呋喃 为溶剂,
以94%的产率得到(1R,3R,4S,6S)-6-(1-Ethoxy-ethoxy)-3-[(R)-1-hydroxy-2-(7-methyl-5,9-dihydro-6,8-dioxa-benzocyclohepten-7-yl)-ethyl]-3,4-dimethyl-bicyclo[2.2.1]heptan-2-one