Synthesis and biological evaluation of naphthalene, furan and pyrrole based chalcones as cytotoxic and antimicrobial agents
作者:Abhishek Budhiraja、Kanika Kadian、Mandeep Kaur、Vikas Aggarwal、Atul Garg、Sameer Sapra、Kunal Nepali、O. P. Suri、K. L. Dhar
DOI:10.1007/s00044-011-9733-y
日期:2012.9
but in the present study we report the reactions of 1-acetylnaphthalene, 2-acetylfuran and 2-acetylpyrrole with aldehydes, thus getting compounds akin to chalcones. 31 analogues have been synthesised and evaluated for cytotoxic potential against PC-3, OVCAR, IMR-32 and HEP-2. Compound 9 was found to be the most cytotoxic with inhibition ranging from 72 to 88% against the cell lines employed. The synthetics
Furanyl Cyclic Ethers: Single and Double Diastereoselectivity in the Synthesis of 2,4-Di and 2,4,5-Trisubstituted Tetrahydropyrans
作者:Dennis A. Cooper、Emma Robbins、Graham J. Tizzard、Simon J. Coles、Matthew O’Brien
DOI:10.1021/acs.joc.6b02831
日期:2017.4.7
of a prochiral bis-hydroxymethyl group with the epimerization of a chiral furanyl ether in a single transformation, high levels of double diastereoselectivity have been achieved in a synthesis of 2,4,5-trisubstituted tetrahydropyrans, which proceeds under thermodynamic control.
Chalcone is an aromatic ketone that forms the central core for a variety of important biological compounds, which are collectively known as chalcones. The cytotoxic potential of chalcones which consists of C-6-C-3-C-6 units gets enhanced by the incorporation of pyrazole ring as proved by our earlier studies. Thus in the present work, pyrazoles of chalcones with ring A substituted by furan, naphthalene and variety of substituted phenyl rings has been prepared and evaluated for in vitro cytotoxic activity against PC-3, OVCAR, IMR-32, HEP-2 human cancer cell lines.All the synthesized compounds were evaluated for in vitro cytotoxicity against PC-3, OVCAR, IMR-32, HEP-2 human cancer cell lines. Compound 68 was found to be the most potent showing broad spectrum of cytotoxicity against all the cell lines .
Electrochemically Induced Ring-Opening/Friedel–Crafts Arylation of Chalcone Epoxides Catalyzed by a Triarylimidazole Redox Mediator
作者:Nan-ning Lu、Ni-tao Zhang、Cheng-Chu Zeng、Li-Ming Hu、Seung Joon Yoo、R. Daniel Little
DOI:10.1021/jo5022184
日期:2015.1.16
The indirect anodic oxidation of chalcone epoxides in the presence of electron-rich heteroarenes mediated by a triarylimidazole (Med) was investigated by cyclic voltammetry (CV) and controlled potential electrolysis. The CV results indicate that a homogeneous electron transfer between Med(center dot+) and chalcone epoxides is facilitated by an electron-rich heteroarene that serves as an arylation reagent. The preparative scale electrolysis generated epoxide-ring-opened/Friedel-Crafts arylation products in moderate to good yields. The fact that only a catalytic amount of charge was required suggests that Med(center dot+) initiates a chain reaction. In addition, overoxidation of the products is avoided even though their oxidation potential is less than that of the starting chalcone epoxides.
One-Pot Synthesis of Polysubstituted Indolizines by an Addition/Cycloaromatization Sequence
作者:Murat Kucukdisli、Till Opatz
DOI:10.1021/jo400992n
日期:2013.7.5
Indolizines carrying various substituents in positions 5-8 were obtained from readily available 2-(1H-pyrrol-1-yl)nitriles and alpha,beta-unsaturated ketones or aldehydes in a one-pot procedure. Michael addition of the deprotonatecl aminonitriles to the acceptors followed by acid catalyzed electrophilic cyclization produces 5,6-dihydroindolizine-5-carbonitriles. From these stable intermediates, substituted indolizines were obtained via base induced dehydrocyanation.