PROCESS FOR THE PREPARATION OF 1S- 1 alpha, 2-ALPHA, 3 beta (1S *, 2R *), 5 beta - 3- 7- 2- (3,4-difluorophenyl) -CYCLOPROPYLAMINO -5- (propylthio) -3 H -1,2,3-triazolo 4,5-d pyrimidin-3-yl -5- (2-hydroxyethoxy) cyclopentane-1,2-dIOL AND ITS INTERMEDIATES

摘要

The present invention is directed to a process for preparing [1S-[1 Alpha,2 Alpha,3 Beta(1S*,2R*),5 Beta]]- 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.