N-[1-[2-deoxy-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-β-D-glucopyranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide 在
2,6-二甲基吡啶 、 camphor-10-sulfonic acid 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
生成 [(2R,3R,4R,5R,6R)-2-(4-Benzoylamino-2-oxo-2H-pyrimidin-1-yl)-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-6-hydroxymethyl-tetrahydro-pyran-3-yl]-carbamic acid 9H-fluoren-9-ylmethyl ester