Total Synthesis of Entecavir

Autor: Xavier Ariza, Javier Velasco, Yolanda Gasanz, Laura Badía, Jordi Garcia, Joan Gallardo, Jaume Farràs, Martí Bartra, Ramon Berenguer
Přispěvatelé: Universitat de Barcelona
Rok vydání: 2013
Předmět:
Zdroj: Dipòsit Digital de la UB
Universidad de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname
ISSN: 1520-6904
0022-3263
Popis: Entecavir (BMS-200475) was synthesized from 4-trimethylsilyl-3-butyn-2-one and acrolein. The key features of its preparation are: (i) a stereoselective boron-aldol reaction to afford the acyclic carbon skeleton of the methylenecylopentane moiety; (ii) its cyclization by a Cp2TiCl-catalyzed intramolecular radical addition of an epoxide to an alkyne; and (iii) the coupling with a purine derivative by a Mitsunobu reaction.
Databáze: OpenAIRE