Preparation and antitubercular activities in vitro and in vivo of novel Schiff bases of isoniazid
作者:Michael J. Hearn、Michael H. Cynamon、Michaeline F. Chen、Rebecca Coppins、Jessica Davis、Helen Joo-On Kang、Abigail Noble、Becky Tu-Sekine、Marianne S. Terrot、Daniella Trombino
DOI:10.1016/j.ejmech.2009.05.009
日期:2009.10
Structural modification of the frontline antitubercular isonicotinic acid hydrazide (INH) provides lipophilic adaptations (3-46) of the drug in which the hydrazine moiety of the parent compound has been chemically blocked from the deactivating process of N-2-acetylation by N-arylaminoacetyl transferases. As a class, these compounds show high levels of activity against Mycobacterium tuberculosis in vitro and in tuberculosis-infected macrophages. They provide strong protection in tuberculosis-infected mice and have low toxicity. With some representatives of this class achieving early peak plasma concentrations approximately three orders of magnitude above minimum inhibitory concentration, they may serve as tools for improving our understanding of INH-based treatment modalities, particularly for those patients chronically underdosed in conventional INH therapy. (C) 2009 Elsevier Masson SAS. All rights reserved.
Microwave-Assisted, Solvent-Free and Parallel Synthesis of Some Novel Substituted Imidazoles of Biological Interest
作者:Gyanendra Kumar Sharma、Devender Pathak
DOI:10.1248/cpb.58.375
日期:——
of some novel substituted imidazoles of biological interest is reported. First, primary aromatic or heteryl amine was condensed with aryl or heteryl aldehydes to afford corresponding Schiff's base. The Schiff's base further on treatment with ammonium acetate (NH(4)OAC) and isatin using silica gel as the solid support, yielded the corresponding aryl imidazoles. In this paper a comparative study between