(2R,3R,4R)-1,3,4-Tris-benzyloxy-5-(tert-butyl-diphenyl-silanyloxy)-pentan-2-ol 、
Phosphoric acid (2R,3R,4R,5R)-5-(6-benzoylamino-purin-9-yl)-2-(tert-butyl-diphenyl-silanyloxymethyl)-4-(4-methoxy-benzyloxy)-tetrahydro-furan-3-yloxymethyl ester dibutyl ester 在
三氟甲磺酸三甲基硅酯 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 0.17h,
以53%的产率得到N-{9-[(2R,3R,4R,5R)-4-[(1R,2S,3R)-2,3-Bis-benzyloxy-1-benzyloxymethyl-4-(tert-butyl-diphenyl-silanyloxy)-butoxymethoxy]-5-(tert-butyl-diphenyl-silanyloxymethyl)-3-(4-methoxy-benzyloxy)-tetrahydro-furan-2-yl]-9H-purin-6-yl}-benzamide