Expedient Protocols for the Installation of 1,5-Benzoazepino-Based Privileged Templates on the 2-Position of 1,4-Benzodiazepine Through a Phenoxyl Spacer
作者:Navjeet Kaur、Ruchi Tyagi、Dharma Kishore
DOI:10.1002/jhet.1924
日期:2014.8
4-benzodiazepine ring, substituted on its 5-position with a carboxamido group (), has been developed to allow the incorporation of 1,5-benzodiazepine, 1,5-benzothiazepine, and 1,5-benzoxazepine () rings through their dimethylaminomethylene ketone intermediate ().
Application of Dimethylaminomethylene Ketone in Heterocycles Synthesis: Synthesis of 2-(Isoxazolo, Pyrazolo, and Pyrimido) Substituted Analogs of 1,4-Benzodiazepin-5-carboxamides Linked through an Oxyphenyl Bridge
Versatility of dimethylaminomethylene ketone derivative of 2-(4′-acetyl)-phenoxyl-5-carboxamido-1,4-benzodiazepin-5-(4′-methylpiperazinyl)-carboxamide () was explored to provide an easy one-pot access to its 2-(isoxazolo, pyrazolo, and pyrimido) substituted analogs , , , , , and , respectively.
A novel synthetic approach developed by the use of a microwave (MW) assisted onepot protocol to the synthesis of methyl-1,4-benzodiazepin-2-one-5-carboxylate ( 2 ) derivatives for which N -chloroacetylisatin was employed with an elegant success to afford the formation of 5-methyl carboxylate derivatives of 1,4-benzodiazepines from its reaction with methanolic hexamine. We have utilized MW technique
Synthesis of 2-(oxadiazolo, pyrimido, imidazolo, and benzimidazolo) substituted analogues of 1,4-benzodiazepin-5-carboxamides linked through a phenoxyl bridge
作者:N KAUR、D KISHORE
DOI:10.1007/s12039-014-0721-x
日期:2014.11
facile single-step expedientprotocols based on the versatility and reactivity of corresponding intermediates amidine and imidate (8 and 9), derived from 5-carboxamido-1,4-benzodiazepin-5-(4’-methylpiperazinyl)-carboxamide have been developed to provide an easy installation of the oxadiazole, pyrimidine, imidazole and benzimidazole (9–14) based privilegedtemplates at 2-position of 5-carboxamido-1