Heptadec-16-enoic acid (S)-1-[(R)-2-((4S,5R,4'S,5'S)-5'-allyl-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-2-hydroxy-ethylcarbamoyl]-butyl ester 在
Grubbs catalyst first generation 作用下,
以
二氯甲烷 为溶剂,
反应 18.0h,
以90%的产率得到(E)-(1S,2S,6R,7R,11S,31S)-7-Hydroxy-4,4,33,33-tetramethyl-11-propyl-3,5,12,32,34-pentaoxa-9-aza-tricyclo[29.3.0.02,6]tetratriacont-28-ene-10,13-dione