Patent ID: 8247564
Filing Date: 2012-08-21
Classification: A61K,A61P,C07D

Abstract:
1. A process for preparing a compound of formula I: wherein G W represents O or NW each R each R each R R R R each R a is 0 or an integer of from 1 to 3; b is 0 or an integer of from 1 to 3; c is 0 or an integer of from 1 to 4; d is 0 or an integer of from 1 to 5; and m is 0 or an integer of from 1 to 3; or a pharmaceutically acceptable salt or stereoisomer thereof; the process comprising: (a) reacting a compound of formula 1: with a compound of formula 8: or a hydrate thereof, in the presence of a reducing agent, wherein R (b) reacting a compound of formula 9: wherein X wherein R (c) reacting a compound of formula 11: or a hydrate thereof; wherein R removing any protecting group P