Patent ID: 8785640

Claim:
A process for preparing a compound of Formula (Ic): or pharmaceutically acceptable salts thereof, wherein the process comprises: (a) reacting the acid of formula 1d with an amine of formula 2c to provide a compound of Formula (Ic) wnerein: ring A is selected from: wherein R 1 is —CF 3 , —CN, or —C≡CCH 2 N(CH 3 ) 2 ; R 2 is hydrogen, —CH 3 , —CF 3 , —OH, or —CH 2 OH; R 3 is hydrogen, —CH 3 , —OCH 3 , or —CN; provided that both R 2 and R 3 are not simultaneously hydrogen, and R a is hydrogen or a silyl protecting group selected from the group consisting of trimethylsilyl (TMS), tert-butyldiphenylsilyl (TBDPS), tert-butyldimethylsilyl (TBDMS) triisopropylsilyl (TIPS) and [2-(trimethylsilyl)ethoxy]methyl (SEM).