((S)-2,2-Dimethyl-5-oxo-[1,3]dioxolan-4-yl)-acetyl isothiocyanate 在
吡啶 、
三氟甲磺酸三甲基硅酯 作用下,
以
甲苯 为溶剂,
生成 O-[(1R,2R,4R)-4-[(E)-2-[(1R,9S,12S,13R,14S,17R,18E,21S,23S,24R,25S,27R)-17-ethyl-1,14-dihydroxy-23,25-dimethoxy-13,19,21,27-tetramethyl-2,3,10,16-tetraoxo-11,28-dioxa-4-azatricyclo[22.3.1.04,9]octacos-18-en-12-yl]prop-1-enyl]-2-methoxycyclohexyl] N-[2-[(4S)-2,2-dimethyl-5-oxo-1,3-dioxolan-4-yl]acetyl]carbamothioate