Patent ID: 8039641
Filing Date: 2011-10-18
Classification: C07D

Abstract:
1. A process for preparing a compound of formula Ia, Ib, Ic or Id, or a pharmaceutically acceptable salt, complex or prodrug thereof, wherein: R R R Y is CR in the group (X) in the group (W) in the group (V) Y or where (U) in the group (Y or when ‘k’ is 1, Y where Y R ‘j’ is 1, 2, 3 or 4, where when ‘j’ is 2, 3 or 4, one R or when ‘k’ is 1, 2, or 3 and (U) R R except when R R in the group (X ‘s’ is 0, 1 or 2, provided that when (Y each U is independently a 5- to 7-membered monocyclic or a 8- to 11-membered bicyclic ring which is either saturated or unsaturated and which includes up to four heteroatoms as shown below: wherein R A is selected from: B, D and G are each independently selected from: E is selected from: K is selected from: J, L, M, R, T, T T T T ‘q’ is 1, 2 or 3; ‘p’ is or 1; R R R said process comprising the steps of: (i) treating a compound of formula Iva or Ivb with an oxidizing agent to form a compound of formula Va or Vb, respectively; (ii) converting the compound of formula Va or Vb into a compound of formula VIa or VIb, respectively;