Synthèse par réactions SRN1 de nouveaux 5-nitroimidazoles antiparasitaires et antibactériens
作者:P Vanelle、MP Crozet、J Maldonado、M Barreau
DOI:10.1016/0223-5234(91)90026-j
日期:1991.3
1-Methyl-2-chloromethyl-5-nitroimidazole reacts by an S(RN)1 mechanism with various aliphatic, cyclic or heterocyclic nitronate anions to afford, in high yields, new 5-nitroimidazoles bearing a trisubstituted ethylenic double bond at the 2 position. Some of these compounds are as active as metronidazole in vitro and in vivo against protozoa and anaerobic bacteria. Structure-activity relationships are discussed.
Synthesis of Various Substituted Nitroisoquinolines by SRN1 Methodology
作者:Patrice Vanelle、Pascal Rathelot、José Maldonado、Michel P. Crozet
DOI:10.3987/com-97-7829
日期:——
The versatile S(RN)1 methodology allows straightforward access to new 1-substituted 5-nitroisoquinolines from an original heterocyclic reductive alkylating agent, 1-chloromethyl-5-nitroisoquinoline, with various nitronate anions. By base-promoted nitrous acid elimination, trisubstituted olefins are prepared from the C-alkylation derivatives.