78548-58-0Relevant articles and documents
A diastereoselective synthesis of boceprevir's gem-dimethyl bicyclic [3.1.0] proline intermediate from an insecticide ingredient cis-cypermethric acid
Kallam, Srinivasa Reddy,Eda, Vishnuvardhan Reddy,Sen, Saikat,Datrika, Rajender,Rapolu, Rajesh Kumar,Khobare, Sandip,Gajare, Vikas,Banda, Malavika,Khan, Rashid Abdul Rehman,Singh, Manpreet,Lloyd, Michael,Kandagatla, Bhaskar,Janagili, Moses Babu,Tadikonda, Veerabhadra Pratap,Vidavalur, Siddaiah,Iqbal, Javed,Fox, Martin E.,Dahanukar, Vilas H.,Oruganti, Srinivas
, p. 4285 - 4294 (2017)
An efficient multi-gram synthesis of (1R,2S,5S)-methyl 6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate, a key chiral bicyclic proline fragment employed in the construction of the potent anti-HCV drug boceprevir, has been presented. The synthetic route commences with the readily available cis-cypermethric acid, a cheap source of the cyclopropane ring required in the targeted compound, and utilizes the cis-orientation of the 2,2-dichlorovinyl and carboxylic acid side arms, already present in the starting material, to effect a diastereoselective construction of the proline moiety.
