Enantioselective syntheses of carbocyclic nucleosides 5′-homocarbovir, epi-4′-homocarbovir, and their cyclopropylamine analogs using facially selective Pd-mediated allylations
作者:Lawrence P. Tardibono、Marvin J. Miller、Jan Balzarini
DOI:10.1016/j.tet.2010.11.097
日期:2011.2
Carbocyclic nucleosides (-)-5'-homocarbovir and (+)-epi-4'-homocarbovir were prepared from an acylnitroso-derived hetero Diels-Alder cycloadduct. A kinetic enzymatic resolution generated an enantiopure aminocyclopentenol and Pd(0)-mediated decarboxylative allylations of allyl 2,2,2-trifluoroethyl malonates were used to install the 4'-hydroxyethyl groups. Late stage derivatization gave access to the cyclopropylamine analogs, (-)-5'-homoabacavir, and (+)-epi-4'-homoabacavir. All carbonucleoside target molecules were evaluated for antiviral activity. (C) 2010 Elsevier Ltd. All rights reserved.