a Discovery Research, Dr. Reddy’s Laboratories Ltd, Bollaram Road, Miyapur, Hyderabad 500 049, AP, India b Department of Chemistry, JNTU College of Engineering, Kukatpally, Hyderabad 500 085, AP, India
Abstract:
Synthesis of varenicline the antismoking drug has been achieved in six steps with 10% overall yield. A Diels-Alder reaction, oxidative cleavage of an olefin and reductive amination remain as key steps in the synthesis