5706-19-4Relevant academic research and scientific papers
Light-enabled, AlCl3-catalyzed regioselective intramolecular nucleophilic addition of non-nucleophilic alkyls to alkynes
Zhang, Yanbin,Jin, Ruiwen,Pan, Guangxing,Guo, Hao
supporting information, p. 11621 - 11624 (2020/10/19)
Light-enabled, AlCl3-catalyzed regioselective intramolecular nucleophilic cyclization of alkynes using non-nucleophilic alkyls as the nucleophile is reported. Upon photoexcitation, o-alkylphenyl alkynyl ketones can be transferred into (E)-photoenols. Thus, a nucleophilic methylene is formed from the non-nucleophilic alkyl. An AlCl3 catalyst can stabilize the (E)-photoenol intermediate and facilitate further intramolecular nucleophilic cyclization. DFT calculations indicated that the AlCl3-catalyzed cyclization is the regioselectivity determining step.
I2/TBHP mediated diastereoselective synthesis of spiroaziridines
Ashitha, Kizhakkan Thiruthi,Vinaya, Puthiya Purayil,Krishna, Ajay,Vincent, Deepthy Cheeran,Jalaja, Renjitha,Varughese, Sunil,Somappa, Sasidhar Balappa
supporting information, p. 1588 - 1593 (2020/03/06)
Eventhough spiroheterocycles are considered as emerging drug candidates, synthesis of spiroaziridines has not been well explored so far. Herein, we disclose an efficient I2/TBHP mediated diastereoselective synthesis of N-alkyl spiroaziridines from primary amines and easily accessible α,β-unsaturated ketones. The reaction is also compatible for the synthesis of 2-aroylaziridines.
Synthesis and characterization of novel indanone-based spiro-dihydrobenzofuran derivatives
Güdere, Meliha Burcu,Dürü, Ne?e,Budak, Yakup,Ceylan, Mustafa
, p. 1445 - 1457 (2019/11/02)
In this study, the synthesis and characterization of novel indanone-based spiro-dihydrobenzofuran derivatives were examined. Firstly, chalcone-like compounds 4a–k, (E) -2-benzylidene-2,3-dihydro-1 H -inden-1-one derivatives, were synthesized by the base-c
Michael addition of malononitrile to indenones: Synthesis and characterization of 2-(1-oxo-2,3-dihydro-1H-inden-2-yl) (aryl)(methyl)malononitrile derivatives
?ahin, Betül,Gürdere, Meliha Burcu,Ceylan, Mustafa
, p. 1090 - 1095 (2017/05/25)
Indanones 3 were prepared from the reaction of indanone (1) with corresponding benzaldehyde derivatives 2, as described in the literature. Then, indenones 3 were subjected to KOtBu-catalyzed Michael addition with malononitrile to give a mixture of diaster
p-TSA-promoted syntheses of 5H-benzo[h]thiazolo[2,3-b]quinazoline and indeno[1,2-d]thiazolo[3,2-a]pyrimidine analogs: Molecular modeling and in vitro antitumor activity against hepatocellular carcinoma
Keshari, Amit K.,Singh, Ashok K.,Raj, Vinit,Rai, Amit,Trivedi, Prakruti,Ghosh, Balaram,Kumar, Umesh,Rawat, Atul,Kumar, Dinesh,Saha, Sudipta
, p. 1623 - 1642 (2017/06/19)
In our efforts to address the rising incidence of hepatocellular carcinoma (HCC), we have made a commitment to the synthesis of novel molecules to combat Hep-G2 cells. A facile and highly efficient one-pot, multicomponent reaction has been successfully de
Design, synthesis, and structure-activity relationship study of halogen containing 2-benzylidene-1-indanone derivatives for inhibition of LPS-stimulated ROS production in RAW 264.7 macrophages
Shrestha, Aarajana,Jin Oh, Hye,Kim, Mi Jin,Pun, Nirmala Tilija,Magar, Til Bahadur Thapa,Bist, Ganesh,Choi, Hongseok,Park, Pil-Hoon,Lee, Eung-Seok
, p. 121 - 138 (2017/04/07)
As a continuous effort to discover new potential anti-inflammatory agents, we systematically designed and synthesized sixty-one 2-benzylidene-1-indanone derivatives with structural modification of chalcone, and evaluated their inhibitory activity on LPS-stimulated ROS production in RAW 264.7 macrophages. Systematic structure-activity relationship study revealed that hydroxyl group in C-5, C-6, or C-7 position of indanone moiety, and ortho-, meta-, or para-fluorine, trifluoromethyl, trifluoromethoxy, and bromine functionalities in phenyl ring are important for inhibition of ROS production in LPS-stimulated RAW 264.7 macrophages. Among all the tested compounds, 6-hydroxy-2-(2-(trifluoromethoxy) benzylidene)-2,3-dihydro-1H-inden-1-one (compound 44) showed the strongest inhibitory activity of ROS production. Further studies on the mode of action revealed that compound 44 potently suppressed LPS-stimulated ROS production via modulation of NADPH oxidase. The findings of this work could be useful to design 2-benzylidene-indanone based lead compounds as novel anti-inflammatory agents.
Catalytic enantioselective cascade Michael/cyclization reaction of 3-isothiocyanato oxindoles with exocyclic α,β-unsaturated ketones: En route to 3,2′-pyrrolidinyl bispirooxindoles
Kayal, Satavisha,Mukherjee, Santanu
supporting information, p. 10175 - 10179 (2016/11/17)
Cascade Michael/cyclization reactions between 3-isothiocyanato oxindoles and exocyclic α,β-unsaturated ketones are shown to proceed efficiently in the presence of a quinine-derived tertiary amino-squaramide catalyst and furnish 3,2′-pyrrolidinyl bispirooxindoles containing two spiro-quaternary and three contiguous stereocenters as a single diastereomer with excellent enantioselectivities (up to 99:1 er).
BF3·Et2O mediated one-step synthesis of N-substituted-1,2-dihydropyridines, indenopyridines and 5,6-dihydroisoquinolines
Fathimath Salfeena,Ashitha,Sasidhar
supporting information, p. 10165 - 10169 (2016/11/17)
A simple and efficient one-pot synthesis of N-substituted-1,2-dihydropyridines, indenopyridines and 5,6-dihydroisoquinolines by a BF3·Et2O mediated novel methodology, from easily available α,β-unsaturated ketones/arylidene ketones, phenyl acetylenes and substituted nitriles, has been described. This novel annulation provides quick access to complex polycyclic frameworks with an excellent substrate scope.
NEW MATERIAL FOR TRANSPORTING ELECTRON AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Paragraph 0071; 0074; 0075, (2016/10/10)
The present invention relates to a novel electron transport material represented by chemical formula 1 and an organic luminescent device using the same. By using the electron transport material, the organic luminescent device which has enhanced luminescent properties and improved electric power consumption by reinforcing driving voltage and inducing increase of power factor can be manufactured.
Synthesis of highly functionalised dispiropyrrolidine derivatives as novel acetylcholinesterase inhibitors
We, Ang Chee,Ali, Mohamed Ashraf,Yoon, Yeong Keng,Ismail, Rusli,Choon, Tan Soo,Khaw, Kooi-Yeong,Murugaiyah, Vikneswaran,Lakshmipathi, Venu Sanjeevi
, p. 156 - 161 (2014/03/21)
In the effort of finding novel acetyl cholinesterase (AChE) inhibitors to improve the efficacy of Alzheimer's disease (AD) treatment, series of substituted aryl-1′-methyldispiro[indan-2,2′ pyrrolidine-3′, 2"-indan]-1,3,1′-trione and substituted 7′-aryl-5′, 6′,7′,7a′-tetrahydrodispiro-[indane-2,5′-pyrrolo[1,2-c] [1,3]thiazole-6′,2"-indan]-1,3,1"-trione analogues were synthesized using [3+2]-cycloaddition reactions. These newly synthesized pyrrolidine compounds were assayed for their biological activity using Ellman's method. The structural elucidation of the compounds was performed by using 1H-NMR, 13C-NMR, ESI-MS spectra and elemental analyses. Eight out of twenty synthesized compounds showed more than 50% inhibition at concentration of 10 μM. Compound 2e, 2i and 3e were among the most active one, giving IC50 value as 3.3 μM for 2e, 3.7 μM for 2i and 5.5 μM for 3e, respectively. Lineweaver-Burk plot indicated that 2i inhibits AChE in a competitive manner. Molecular modelling study was performed to disclose the binding interaction of these compounds with the active site of AChE.
