Enantioselective syntheses of carbocyclic nucleosides 5′-homocarbovir, epi-4′-homocarbovir, and their cyclopropylamine analogs using facially selective Pd-mediated allylations
摘要:
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.
[EN] BIS(AMIDINOBENZIMIDAZOLYL)ALKANES AS ANTIVIRAL AGENTS<br/>[FR] ALCANES BIS(AMIDINOBENZIMIDAZOLYLE) UTILISES EN TANT QU'AGENTS ANTIVIRAUX
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:WO1995008540A1
公开(公告)日:1995-03-30
(EN) The present invention relates to certain bisbenzimidazole compounds and their use in medical therapy, particularly in the treatment of immunodeficiency virus infections. Also provided are pharmaceutical formulations and processes for the preparation of compounds according to the invention.(FR) L'invention se rapporte à certains composés bisbenzimidazoles et à leur utilisation en thérapie médicale, particulièrement dans le traitement des infections à virus d'immunodéficience. L'invention concerne également des formules pharmaceutiques ainsi que des procédés de préparation de ces composés.