series of hydrazones of 1,2-benzisothiazole hydrazides 1a-m, 2a-m, 3a-m, 4a-m, 5a-m as well as their cyclic (1 and 4) and acyclic (2, 3 and 5) 1,2-benzisothiazole parent hydrazides, were synthesised and evaluated as antibacterial and antifungal agents. All of the 2-amino-1,2-benzisothiazol-3(2H)-one derivatives, belonging to series I and IV, showed a good antibacterial activity against Gram positive
Synthesis and Correlations between Experimental and Calculated Lipophilic Indices of New 1,2-Benzisothiazole Derivatives with Potential Antimicrobial Activity
Five series of new hydrazones (1a—m, 2a—m, 3a—m, 4a—m, 5a—m) with potential antimicrobial activity were synthesized from cyclic (1 and 4) or acyclic (2, 3 and 5) 1,2‐benzisothiazolylhydrazides and characterized. Condensation of the appropriate hydrazide with aldehydes afforded the designed compounds. Aldehydes carrying different hydrophobic substituents were used and the five series were designed so
Anti-HIV evaluation of benzo[d]isothiazole hydrazones
作者:Paola Vicini、Matteo Incerti、Paolo La Colla、Roberta Loddo
DOI:10.1016/j.ejmech.2008.05.030
日期:2009.4
The synthesis and the anti-HIV-1 activity of novel benzo[d]isothiazole hydrazones are reported. Target compounds tested in MT-4 cells cultures for their anti-HIV properties against wild type HIV-1 and HIV strains carrying clinically relevant mutations (EFV(R), Y181C and K103/Y181C) showed good activity against wild type HIV-1 and against the EFVR mutant. In terms of SAR the relevant result was that, in the class of benzisothiazole hydrazones, the benzo[d]isothiazol-3(2H)-one moiety (compounds 1 and 4) is an essential structural requirement for the anti-retroviral activity. (C) 2008 Elsevier Masson SAS. All rights reserved.
Synthesis and antiproliferative activity of benzo[d]isothiazole hydrazones
作者:Paola Vicini、Matteo Incerti、Irini A. Doytchinova、Paolo La Colla、Bernadetta Busonera、Roberta Loddo
DOI:10.1016/j.ejmech.2006.01.010
日期:2006.5
Several benzo[d]isothiazole hydrazones have been evaluated for their potential antiretroviral activity. Since a number of these compounds were found to be inactive against viruses, but showed cytotoxicity at micromolar concentrations against the human CD4(+) lymphocytes (MT-4) that were used to support HIV-1 growth, they were further tested for antiproliferative activity. The compounds resulted as being cytotoxic for MT-4 cells and new derivatives which were rationally designed and synthesized, were tested for antiproliferative activity against several leukaemia and solid, tumour cell lines. In addition, these compounds were evaluated against "normal" cell lines. Compound 2h proved to be the most active compound and the fragment -CO-NH-N=CH-2-hydroxyphenyl was identified as being very important for biological activity, suggesting intramolecular, hydrogen bond formation or favourable mutual disposition between two important centres in the pharmacophore. H-1-NMR spectra have been explained with the support of a conformational analysis. (c) 2006 Elsevier SAS. All rights reserved.