Dr. Reddy's Laboratories, Incorporated

Srinivas Polavarapu

Babu Ireni

Pratap Reddy Padi

Vijaya Anand Ramasamy

Ranga Reddy Vangala

Shailaja Padamata

Kavitha Nerella

Rajeshwar Reddy Sagyam

Srinivas Katkam

Krishna Vinigari

Venkata Madhavi Yaddanapudi

Narasimha Rao Pagadala

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

Aspects of the present application relate to a microcrystalline monoclinic form of asenapine maleate represented by structural Formula (I); processes for its preparation; and pharmaceutically acceptable dosage forms thereof. 

Asenapine maleate

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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Hyderabad Telangana, India

Srinivas Polavarapu