Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1261, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2022.132929
Keywords
11 H -Indeno[1; b ]quinoxalin-11-one; derivatives; Wittig reagents; Phosphorus Reagents; Ketones; Biological activities and Molecular docking; analysis
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In this study, olefin adducts were synthesized through Wittig reactions and their stereo-isomerism was investigated. The structures of the compounds were confirmed based on chemical and spectroscopic evidence. The cytotoxic activity of the new compounds against liver and breast cancer cell lines was evaluated.
In this study, olefin adducts were synthesized from Wittig reactions on carbonyl group and stereo-identity of the alkene products. The reaction of 11 H -Indeno[1,2- b ]quinoxalin-11-one with few stabilized phosphonium ylides yielded a combination of the corresponding E and Z olefins in each case. On the other hand, the reaction of 11 H -indeno[1,2- b ]quinoxalin-11-one with dialkyl phosphites gave related phosphonates. The aldol condensation reaction of 11 H -Indeno[1,2- b ]quinoxalin-11-one with boiling dry acetone and/or 2-butanone in presence of aluminum oxide or anhydrous potassium carbonate as a catalyst led to the formation of the beta-hydroxy ketones. The nucleophilic addition reaction of acetone and/or 2- butanone to ( E )-alkyl 2-(11H-indeno[1,2-b]quinoxalin-11-ylidene)acetate in presence of aluminum oxide or anhydrous potassium carbonate as a catalyst led to the formation of the corresponding an addition products. Reaction mechanisms are taken into consideration and the structural assignments of the new compounds are based on the chemical and spectroscopic evidences. The cytotoxic activity of some new compounds had been evaluated against human hepatocellular carcinoma cell line (HePG2) and human Caucasian breast adenocarcinoma (MCF7). Compounds 6b,c showed higher cytotoxicity towards breast (MCF7) most cancers cellular line than the reference drug (Doxorubicin). The binding mode of phosphonates 6 changed into similarly tested by using molecular docking studies (c) 2022 Elsevier B.V. All rights reserved.
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