三异丙基硅基三氟甲磺酸酯 、 (E)-(1R,9S,12S,13R,14S,16R,17R,21S,23S,24R,25S,27R)-17-Allyl-1,14,16-trihydroxy-23,25-dimethoxy-13,19,21,27-tetramethyl-12-((E)-1-methyl-2-phenyl-vinyl)-11,28-dioxa-4-aza-tricyclo[22.3.1.0
4,9]octacos-18-ene-2,3,10-trione 在
2,6-二甲基吡啶 作用下,
以
二氯甲烷 为溶剂,
以41%的产率得到(E)-(1R,9S,12S,13S,14S,16R,17R,21S,23S,24R,25S,27R)-17-Allyl-1,16-dihydroxy-23,25-dimethoxy-13,19,21,27-tetramethyl-12-((E)-1-methyl-2-phenyl-vinyl)-14-triisopropylsilanyloxy-11,28-dioxa-4-aza-tricyclo[22.3.1.0
4,9]octacos-18-ene-2,3,10-trione