A Catalyst-Free Expeditious Green Synthesis of Quinoxaline, Oxazine, Thiazine, and Dioxin Derivatives in Water under Ultrasound Irradiation
作者:Ankush Mishra、S. Singh、M. A. Quraishi、Vandana Srivastava
DOI:10.1080/00304948.2019.1596469
日期:2019.7.4
been reported in the literature. Conventionally, quinoxalinederivatives were synthesized by using different catalysts such as acetic acid, molecular iodine, o-iodoxybenzoic acid, montmorillonite K-10, polyaniline sulfate, nitrilotris(methylenephosphonic acid), aqueous HF, sulfamic acid, NH4Cl-CH3OH, 26 Amberlyst-15 and metal catalysts such as cerium(IV) ammonium nitrate (CAN), gallium(III) triflate
Seven heterocyclic compounds derived from isatin have been synthesized. Isatin was N-substituted with four aromatic/aliphatic and benzylic moieties (1a-d). Compounds 1a-c were condensed with o-phenylenediamine to afford indoloquinoxaline derivatives (2a-c). Products were tested as inhibitors of InhA enzyme of M. tuberculosis. Compound 6-(diethylaminoethyl)indoloquinoxaline (2a) inhibited 38% of InhA activity at 50 µM. The possible modes of interaction of 2a with InhA were explored by molecular docking. Docking experiments afford keys to improve compound 2a for the design of new potential active drugs against tuberculosis.
Sulfur-mediated annulation of 1,2-phenylenediamines towards benzofuro- and benzothieno-quinoxalines
作者:Loan T. Tran、Tuan H. Ho、Nhu T. A. Phan、Tung T. Nguyen、Nam T. S. Phan
DOI:10.1039/d0ob00887g
日期:——
Oxidation of sp3 C–H bonds in acetophenones is exploited to annulate with 1,2-phenylenediamines.
在这个句子中,sp3 C-H键的氧化被利用来与1,2-苯二胺进行环化。
Synthesis of libraries of quinoxalines through eco-friendly tandem oxidation–condensation or condensation reactions
作者:Susmita Paul、Basudeb Basu
DOI:10.1016/j.tetlet.2011.09.141
日期:2011.12
A facile and expeditious solid-phase synthesis of libraries of quinoxalines promoted on KF-alumina surface via tandem oxidation–condensation or condensation reactions is reported. The reaction protocol is operationally simple and mild. Moreover, solvent-free reaction condition makes the reaction procedure eco-friendly and economically viable.
Indoloquinoxaline derivatives as promising multi-functional anti-Alzheimer agents
作者:Ashish M. Kanhed、Dushyant V. Patel、Nirav R. Patel、Anshuman Sinha、Priyanka S. Thakor、Kishan B. Patel、Navnit K. Prajapati、Kirti V. Patel、Mange Ram Yadav
DOI:10.1080/07391102.2020.1840441
日期:2022.4.13
Abstract To confront a disease like Alzheimer’sdisease having complex pathogenesis, development of multitarget-directed ligands has emerged as a promising drug discovery approach. In our endeavor towards the development of multitarget-directed ligands for Alzheimer’sdisease, a series of indoloquinoxaline derivatives were designed and synthesized. In vitro cholinesterase inhibition studies revealed