Synthesis of enamino-2-oxindoles via conjugate addition between α-azido ketones and 3-alkenyl oxindoles: Cytotoxicity evaluation and apoptosis inducing studies
10 to 28.7 ± 0.36 µM. Compound 3k displayed most potent cytotoxicity against lung cancer (NCI-H460) cells with an IC50 value of 1.40 ± 0.10 µM. 3k also arrested the G2/M phase of the cell cycle and induced distinctive apoptotic features on lung cancer cells. The apoptosis induction is supported by various cellular assays such as AO/EB, DAPI, and DCFDA staining studies including clonogenic assay. Extent
test the cellular toxicity of these derivatives. The results showed that none of the compounds were cytotoxic to normal cells. In addition, pharmacokinetic (ADME) and toxicity study profiles were predicted in silico. All the synthesized derivatives (1 to 7) demonstrated the necessary physicochemical properties for bioavailability. Finally, in vitro results of promising compound 6 were validated using molecular
Quinine as an organocatalytic dual activator for the diastereoselective synthesis of spiro-epoxyoxindoles
作者:Mangilal Chouhan、Anang Pal、Ratnesh Sharma、Vipin A. Nair
DOI:10.1016/j.tetlet.2013.10.115
日期:2013.12
A highly efficient organocatalytic approach has been developed for the diastereoselective epoxidation of (E)-3-ylidene-indolin-2-one derivatives using readily available natural product quinine and urea-hydrogen peroxide (UHP) in DCM at 10 degrees C to afford trans spiro-epoxyoxindoles which were further utilized to obtain beta-hydroxy-alpha-amino esters by water mediated regioselective ring opening from the less hindered end with aniline derivatives, under sonication. (C) 2013 Elsevier Ltd. All rights reserved.