Acetic acid (1R,2S,3R,4S)-3,4-diacetoxy-1-[6-allyloxy-9-((2R,4S,5R)-4-hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-9H-purin-2-ylamino]-1,2,3,4-tetrahydro-benzo[c]phenanthren-2-yl ester 在
lutidine 、
二异丙基铵盐四氮唑 、
lithium carbonate 作用下,
以
二氯甲烷 为溶剂,
生成 [(1R,2S,3R,4S)-3,4-diacetyloxy-1-[[9-[(2R,4S,5R)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-[2-cyanoethoxy-[di(propan-2-yl)amino]phosphanyl]oxyoxolan-2-yl]-6-prop-2-enoxypurin-2-yl]amino]-1,2,3,4-tetrahydrobenzo[c]phenanthren-2-yl] acetate