Dr. Reddy's Laboratories, Incorporated

Vijaya Anand Ramasamy

Babu Ireni

Pratap Reddy Padi

Srinivas Polavarapu

Shailaja Padamata

Kavitha Nerella

Ranga Reddy Vangala

There is provided a process for preparation of sitagliptin of Formula II or a pharmaceutically acceptable salt thereof by deprotection of Formula IX. 

Processes for the preparation of sitagliptin and pharmaceutically acceptable salts thereof

There is provided an improved process for the preparation of Sitagliptin of Formula II by reduction of compound of Formula VIII to Formula IX followed by deprotection of Formula IX to afford Sitagliptin of Formula II.

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Virudhunagar, India

Vijaya Anand Ramasamy