(1R,2R,3R,4R)-3-Fluoro-4-[6-methoxy-2-(trityl-amino)-purin-9-yl]-2-trityloxy-1-trityloxymethyl-cyclopentanol 在
二乙胺基三氟化硫 作用下,
以
二氯甲烷 为溶剂,
以35%的产率得到[9-((1R,2R,3S,4S)-2,4-Difluoro-3-trityloxy-4-trityloxymethyl-cyclopentyl)-6-methoxy-9H-purin-2-yl]-trityl-amine