A PROCESS FOR PREPARING [1S- [1-ALPHA, 2-ALPHA, 3-BETA (1S*, 2R*) 5-BETA] ] -3- [7- [2- (3, 4-DIF LUOROPHENYL) -CYCLOPROPYLAMINO] - 5- (PROPYLTHIO) -3H-1, 2, 3-TRIAZOLO [4, 5-D] PYRIMIDIN-3-YL] -5- (2- HYDROXYETHOXY) CYCLOPENTANE-1, 2-DIOL AND TO ITS INTERMEDIATES

摘要

The present invention is directed to a process for preparing [1S-[1a,2a,3ß(1S*,2R*),5ß]]- 3-[7-[2-(3,4-difluorophenyl)-cyclopropylamino]-5-(propylthio)-3H-1,2,3-triazolo[4,5- d]pyrimidin-3-yl]-5-(2-hydroxyethoxy)cyclopentane-l,2-diol and to intermediates useful in the process.