methyl (E)-2-((1R,3S,7R,11S,15S,17R,21R,23S,E)-17-((R)-1-((benzyloxy)methoxy)ethyl)-12-hydroxy-11-methoxy-21-((4-methoxybenzyl)oxy)-10,10-dimethyl-5,25-dimethylene-19-oxo-18,27,28,29-tetraoxatetracyclo[21.3.1.13,7.111,15]nonacos-8-en-13-ylidene)acetate 、
苯甲酸酐 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以2.8 mg的产率得到methyl 2-(11-methoxy-10,10-dimethyl-5,25-dimethylene-19-oxo-12-phenylcarbonyloxy-17-{[(phenylmethoxy)methoxy]ethyl}-21-(4-methoxybenzyloxy)-18,27,28,29-tetraoxatetracyclo[21.3.1.1
3,7.1
11,15]nonacosa-8-en-13-ylidene) acetate