Synthesis and Antibacterial Activity of Some 5-Nitro-3-phenyliminoindol-2(3H)-ones and Their N-Mannich Bases
作者:Roy W. Daisley、Vasanti K. Shah
DOI:10.1002/jps.2600730333
日期:1984.3
The antimicrobial and antifungal activities of a series of 5-nitro-3-phenyliminoindol-2(3H)-ones and their 1-piperidinomethyl analogues (N-Mannichbases) were investigated. Growth inhibition of Gram-positive bacteria was observed with little or no activity against Gram-negative bacteria. Antifungal activity was absent. The syntheses were accomplished from 5-nitroindol-2,3-dione by condensation with
IMPROVED ONE-POT SYNTHESIS OF 3-SPIRO INDOLINES UNDER MICROWAVE IRRADIATION
作者:Anshu Dandia、Mitali Saha、Harshita Taneja
DOI:10.1080/10426509808035679
日期:1998.8.1
The potential of the domestic microwave oven has been utilized to accelerate the one-pot synthesis of spiro[indole-thiazolidine]diones and spiro[indole-benzothiazine]diones by condensation of substituted indole-2,3-diones (1) and appropriate anilines (2) with mercaptopropionic acid (4a/b) and o-mercaptobenzoic acid (5) in open borosilicate vessels, using ethanol as energy transfer medium. The reaction rate was 400-500 times faster than the reaction rate in the conventional way. Excellent isolated yields with easier workup than classical heating were the main advantages observed.
Synthesis and antibacterial screening of hydrazones, Schiff and Mannich bases of isatin derivatives
Schiff bases and hydrazones of substituted isatins (1-28), were prepared by reacting isatin and aromatic primary amines/hydrazines. A new series of the corresponding N-Mannich base (29-35) was synthesised by reacting them with formaldehyde and diphenyl amine. The chemical structures were confirmed by means of H-1-NMR, IR spectral data and elemental analysis. The compounds were screened for antibacterial activity against seven Gram (+) and seven Gram (-) standard and pathological bacterial strains by the paper disc diffusion technique. The minimum inhibitory concentrations of the active compounds were determined. 1-Diphenyl amino-methyl-3-(4-bromo phenylimino)-1,3-dihydro-indol-3-one (30) and 3-(4-bromo phenylimino)-5-nitro-1,3-dihydroindol-3-one (13) were found to be the most actives compounds of the series. Mannich bases exhibited higher activity than the corresponding Schiff bases. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
DAISLEY, R. W.;SHAH, VASANTI, K., J. PHARM. SCI., 1984, 73, N 3, 407-408
作者:DAISLEY, R. W.、SHAH, VASANTI, K.
DOI:——
日期:——
RAJOPADHYE, M.;POPP, F. D., J. HETEROCYCL. CHEM., 1984, 21, N 2, 289-291