(E)-2-Oxoindolin-3-ylidene ketones can be easily isomerized to their (Z)-isomers by AlCl3 at room temperature in CH2Cl2. The behaviour of the unsaturated dicarbonyl framework in the (Z)-configuration as a bidentate ligand can be the key-step of the isomerization. The limits of a reaction that allows to prepare several yet-unknown products is discussed.
Difluorocarbene-Enabled Synthesis of 3-Alkenyl-2-oxindoles from <i>ortho</i>-Aminophenylacetylenes
作者:Shanglin Chen、Hua Huang、Xin Li、Xingxing Ma、Jianke Su、Qiuling Song
DOI:10.1021/acs.orglett.3c00150
日期:2023.2.24
cyclization pathway from difluorocarbene and ortho-amino aryl alkynone, rendering an effective and universal strategy for the construction of 3-alkenyl-2-oxindoles. Our strategy starts from cheap and accessible ortho-amino aryl alkynone instead of the direct indole skeleton; moreover, in situ generated difluorocarbene from commercially available halogenated difluoroalkylative reagents enables the cleavage
Synthesis and biological evaluation of spiro[cyclopropane-1,3′-indolin]-2′-ones as potential anticancer agents
作者:Chada Narsimha Reddy、V. Lakshma Nayak、Geeta Sai Mani、Jeevak Sopanrao Kapure、Praveen Reddy Adiyala、Ram Awatar Maurya、Ahmed Kamal
DOI:10.1016/j.bmcl.2015.08.056
日期:2015.10
Libraries of spiro[cyclopropane-1,3'-indolin]-2'-ones were synthesized and evaluated for their biological activity against five different human cancer cell lines HT-29 (colon cancer), DU-145 (prostate cancer), Hela (cervical cancer), A-549 (Lung cancer), and MCF-7 (breast cancer). Many compounds of the series exhibited promising anticancer activity (IC50 < 20 mu M) against the studied cell lines. Based on the screening results, a structure activity relationship (SAR) of the pharmacophore was proposed. Among the series compound 6b and 6u showed significant activity against human prostate cancer cell line, DU-145. Flow cytometric analysis showed that these two compounds arrested the cell cycle in the G0/G1 phase leading to caspase-3 dependent apoptotic cell death. Further, measurement of mitochondrial membrane potential and Annexin V-FITC assay also suggested that 6b and 6u induced cell death by apoptosis. (C) 2015 Elsevier Ltd. All rights reserved.
Phosphine-Catalyzed Asymmetric [4+2] Annulation of Vinyl Ketones with Oxindole-Derived α,β-Unsaturated Imines: Enantioselective Syntheses of 2′,3′-Dihydro-1′<i>H</i>-spiro[indoline-3,4′-pyridin]-2-ones
作者:Xiao-Nan Zhang、Gen-Qiang Chen、Xiang Dong、Yin Wei、Min Shi
DOI:10.1002/adsc.201300828
日期:2013.11.25
AbstractA novel asymmetric [4+2] annulation of vinyl ketones with oxindole‐derived α,β‐unsaturated imines has been developed in the presence of a multifunctional thiourea‐phosphine catalyst derived from a natural amino acid, providing the first phosphine‐catalyzed enantioselective synthesis of 2′,3′‐dihydro‐1′H‐spiro[indoline‐3,4′‐pyridin]‐2‐ones in good yields with excellent stereoselectivities under mild conditions.magnified image
Reaction of 2-Oxoindolin-3-Ylidene Derivatives with Heterocyclic Enamines. A Convenient One-Pot Synthesis of Pyrimido [5,4:5',6']Pyrido[2,3-b]-Indole-2,4-Dione and Spiro Indolin-2-One-3,5'-Pyrido [2,3-d] Pyrimidines
作者:Abdel-Aziz S. El-ahl
DOI:10.1080/00397910008087401
日期:2000.1
The reaction of 6-aminouracils 2a, b with 2-oxoindolin-3-ylideneacetophenones la-h afforded Pyrimido[5,4:5', 6'] pyrido-[2, 3-b] indole- 2, 4-diones 3 a-k via a regiospecific Michael addition, followed by cyclization, Alternatively, the reaction of 2a with 2-oxoindolin-3-ylidenemalononitriles 6a, b gave rise to regiospecific formation of spiro indolin-2-one-3, 5'-pyrido[2,3-d]pyrimidines 7a,b.