Phthalic acid bis-[(3R,5R,7R,8R,9S,10S,12S,13R,14S,17R)-17-((R)-4-allyloxy-1-methyl-butyl)-7,12-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl] ester 在
Grubbs catalyst first generation 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以72%的产率得到(1R,3R,4R,5S,7S,8R,9S,12R,13R,26R,27R,30S,31R,32S,34S,35R,36R,38R,39S,42R,53R,56S)-3,7,32,36-tetrahydroxy-8,13,26,31,39,56-hexamethyl-17,22,43,52-tetraoxadecacyclo[51.3.1.138,42.04,9.05,56.08,12.027,31.030,35.034,39.045,50]octapentaconta-19,45,47,49-tetraene-44,51-dione