(1S,2R,3R)-3-((1E,3E)-5-Chloro-penta-1,3-dienyl)-2-[(E)-(R)-7-cyano-7-(1-ethoxy-ethoxy)-4-methyl-hept-3-enyl]-1-(1-ethoxy-ethoxy)-2-methyl-cyclopentanecarbonitrile 在
lithium hexamethyldisilazane 作用下,
以
1,4-二氧六环 为溶剂,
以75%的产率得到(4E,6E,12E)-(1S,3aR,9R,15aR)-1,9-Bis-(1-ethoxy-ethoxy)-12,15a-dimethyl-2,3,3a,8,9,10,11,14,15,15a-decahydro-1H-cyclopentacyclotetradecene-1,9-dicarbonitrile