、
N,N'-硫羰基二咪唑 在
4-二甲氨基吡啶 作用下,
以
甲苯 为溶剂,
反应 20.0h,
以6.4 mg的产率得到O-[(1S,2R,5S,6R,7S,9S,10S,14R,15S,19S)-4-bromo-19-ethyl-15-[(4-methoxyphenyl)methoxy]-14-methyl-13,21-dioxo-7-[(2S,3R,4R,5S,6S)-3,4,5-trimethoxy-6-methyloxan-2-yl]oxy-20-oxatetracyclo[10.10.0.02,10.05,9]docosa-3,11-dien-6-yl] imidazole-1-carbothioate