60463-77-6Relevant academic research and scientific papers
Diastereoselective trans Cyclopropanation of 3-Alkylidene Oxindoles with in Situ Generated α-Diazo Carbonyls or α,β-Unsaturated Diazo Compounds
Pramanik, Sayan,Ray, Suman,Maity, Suvendu,Ghosh, Prasanta,Mukhopadhyay, Chhanda
supporting information, p. 2240 - 2252 (2021/03/18)
An efficient diastereoselective trans cyclopropanation of 3-alkylidene oxindoles with in situ generated α-diazo carbonyl compounds or α,β-unsaturated diazo compounds under metal-free conditions has been developed to synthesize 3-spirocyclopropyl-2-oxindol
Spiro indolone compound as well as, preparation, method and pharmaceutical composition and application thereof
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, (2020/01/11)
Spiro indolone compounds, a preparing method, a medicine composition and uses of the compounds are disclosed. In particular, the invention provide spiro indolone compounds shown as a formula I or II, a preparing method of the spiro indolone compounds and
Green catalytic synthesis method of isatin derivative
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Paragraph 0013; 0014; 0058; 0059; 0060, (2018/01/17)
The invention discloses a green catalytic synthesis method of isatin derivative. The method comprises the following steps: adopting isatin compound and ketone containing alpha-hydrogen as raw materials, adopting water as a solvent to perform Aldol reactio
Autoxidation/Aldol Tandem Reaction of 2-Oxindoles with Ketones: A Green Approach for the Synthesis of 3-Hydroxy-2-Oxindoles
Zhang, Qing-Bao,Jia, Wen-Liang,Ban, Yong-Liang,Zheng, Yong,Liu, Qiang,Wu, Li-Zhu
, p. 2595 - 2598 (2016/02/27)
In the presence of tetrabutylammonium fluoride and molecular sieves (MS) 4 ? in DMF, an efficient autoxidation reaction of 2-oxindoles with ketones under air at room temperature has been developed. This approach may provide a green, practical, and metal-free protocol for a wide range of biologically important 3-hydroxy-3-(2-oxo-alkyl)-2-oxindoles.
An unprecedented protocol for the synthesis of 3-hydroxy-3-phenacyloxindole derivatives with indolin-2-ones and α-substituted ketones
Bai, Mei,You, Yong,Chen, Yong-Zheng,Xiang, Guang-Yan,Xu, Xiao-Ying,Zhang, Xiao-Mei,Yuan, Wei-Cheng
, p. 1395 - 1401 (2016/02/03)
An unprecedented reaction between indolin-2-ones and α-substituted ketones has been developed. Using this protocol, a wide range of biologically important 3-hydroxy-3-phenacyloxindole derivatives could be obtained in good yield (up to 93%) under mild reaction conditions. A possible mechanism of this reaction was tentatively proposed based on some control experiments and MS spectrometry analysis.
Synthesis and biological evaluation of spiro[cyclopropane-1,3′-indolin]-2′-ones as potential anticancer agents
Reddy, Chada Narsimha,Nayak, V. Lakshma,Mani, Geeta Sai,Kapure, Jeevak Sopanrao,Adiyala, Praveen Reddy,Maurya, Ram Awatar,Kamal, Ahmed
, p. 4580 - 4586 (2015/10/12)
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),
3-(2-oxoethylidene)indolin-2-one derivatives activate Nrf2 and inhibit NF-κB: Potential candidates for chemoprevention
Nagle, Amrita A.,Reddy, Shridhivya A.,Bertrand, Helene,Tajima, Hisashi,Dang, Truong-Minh,Wong, Siew-Cheng,Hayes, John D.,Wells, Geoffrey,Chew, Eng-Hui
, p. 1763 - 1774 (2014/08/18)
Induction of cytoprotective phase 2 enzymes through inhibition of Keap1, a repressor of transcription factor Nrf2, is a cancer-prevention strategy. Compounds that elicit antiinflammatory and cytoprotective effects are promising candidates for chemoprevent
Studies on the stereochemical assignment of 3-acylidene 2-oxindoles
Edeson, Steven J.,Jiang, Julong,Swanson, Stephen,Procopiou, Panayiotis A.,Adams, Harry,Meijer, Anthony J. H. M.,Harrity, Joseph P. A.
, p. 3201 - 3210 (2014/05/06)
The designation of E/Z-geometrical isomers in 3-acylidene 2-oxindoles by NMR spectroscopy can lead to erroneous assignment of alkene stereochemistry because of the narrow chemical shift range observed over a large series of analogues. In contrast, UV-Vis spectroscopy offers a convenient and more reliable method for alkene stereochemical assignment. A combination of X-ray crystallography and theoretical studies shows that the observed differences in UV-Vis spectroscopic behaviour relate to the twisted conformation of the Z-isomers that provides reduced conjugation and weaker hypsochromic (blue-shifted) absorbances relative to those of the E-isomers.
A tandem isomerization/prins strategy: Iridium(III)/Bronsted acid cooperative catalysis
Lombardo, Vince M.,Thomas, Christopher D.,Scheidt, Karl A.
supporting information, p. 12910 - 12914 (2014/01/06)
Working together: A mild and efficient isomerization/protonation sequence generates pyran-fused indoles by cooperative catalysis between cationic iridium(III) and Bi(OTf)3. Three distinct cyclization manifolds lead to the corresponding bioactive scaffolds in good yields. In addition, N-substituted indoles can be synthesized enantioselectively in the presence of a chiral phosphate. Copyright
Catalyst-free aldol condensation of ketones and isatins under mild reaction conditions in DMF with molecular sieves 4 A as additive
Chen, Wen-Bing,Liao, Yu-Hua,Du, Xi-Lin,Zhang, Xiao-Mei,Yuan, Wei-Cheng
experimental part, p. 1465 - 1476 (2010/05/18)
In the presence of molecular sieve (MS) 4 A in DMF, a catalyst-free aldol condensation of a variety of aromatic and aliphatic ketones with isatins under mild reaction conditions has been developed. This approach may provide access to a wide range of 3-sub
