Synthesis, antimicrobial activity and QSARs of new benzoxazine-3-ones
摘要:
New ethyl 3,4-dihydro-3-oxo-4,6,7-trisubstituted-2H-1,4-benzoxazine-2-acetate derivatives were synthesized and their structures were elucidated by IR, H-1 NMR and mass spectral data. Antimicrobial activity of the compounds was investigated by using the method of twofold serial dilution technique against different Gram-positive, Gram-negative bacteria and some Candida species in comparison to standard drugs. Microbiological results indicated that the synthesized compounds possessed a broad spectrum of activity having MIC values of 6.25-100 mu g/ml against the tested microorganisms. The QSAR analysis of a set of these compounds tested for growth inhibitory activity against Candida krusei was performed by using the computer-assisted multiple regression procedure. The activity contributions for substituent effects of these compounds were determined from the correlation equation for predictions of the lead optimization. (c) 2006 Elsevier Masson SAS. All rights reserved.
A convenient synthesis of the 2-oxo-[1,4]oxazino[3,2-e]indoleringsystem, an heteroanalogue of Angelicin, is reported. Our synthetic approach consisted of the annelation of the oxazine ring on the indole moiety using 4-amino-5-hydroxy indoles as building blocks. The antiproliferativeactivity of the new compounds either in the dark or under UVA irradiation was investigated.
据报道,方便合成2-氧代-[1,4]恶嗪基[3,2- e ]吲哚环系统,即安吉利辛的杂类似物。我们的合成方法包括使用4-氨基-5-羟基吲哚作为结构单元,在吲哚部分上恶嗪环脱环。研究了新化合物在黑暗中或在UVA照射下的抗增殖活性。
Yalcin, Ismail; Tekiner, Betul P.; Oren, Ilkay Yildiz, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2003, vol. 42, # 4, p. 905 - 909