三氯乙腈 、
Carbonic acid (2R,3S,4R,5R,6R)-2-benzyloxymethyl-5-(3,4-dimethyl-2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-3,6-dihydroxy-tetrahydro-pyran-4-yl ester 9H-fluoren-9-ylmethyl ester 在
sodium hydride 作用下,
以
二氯甲烷 为溶剂,
生成 2,2,2-Trichloro-acetimidic acid (2S,3R,4R,5S,6R)-6-benzyloxymethyl-3-(3,4-dimethyl-2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-4-(9H-fluoren-9-ylmethoxycarbonyloxy)-5-hydroxy-tetrahydro-pyran-2-yl ester