AbstractAn eco-friendly and efficient synthesis of nitrones is presented by condensation of an equimolar amount of aldehydes and N-substituted hydroxylamine hydrochlorides in glycerol as a recyclable solvent-catalyst. This novel protocol provides rapid and mild access to a series of nitrone derivatives in good to excellent yields in the absence of catalyst and base. Graphic abstractSYNOPSIS In this
Absorption Spectra of Azo- and Related Compounds. II.<sup>1</sup> Substituted Phenylnitrones
作者:Owen H. Wheeler、Peter H. Gore
DOI:10.1021/ja01595a028
日期:1956.7
Krishan, Kewal; Singh, Baldev, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1984, vol. 23, # 7, p. 620 - 622
作者:Krishan, Kewal、Singh, Baldev
DOI:——
日期:——
Kumar, Dhruva; Suresh; Sandhu, Jagir S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2013, vol. 52, # 8, p. 1157 - 1160
作者:Kumar, Dhruva、Suresh、Sandhu, Jagir S.
DOI:——
日期:——
Synthesis and evaluation of hexahydropyrrolo[3,4-d]isoxazole-4,6-diones as anti-stress agents
作者:Rahul Badru、Preet Anand、Baldev Singh
DOI:10.1016/j.ejmech.2011.11.037
日期:2012.2
A series of 2,3-diphenyl-5-(naphthalen-1-yl)-4H-2,3,3a,5,6,6a-hexahydropyrrolo[3,4-d]isoxazole-4,6-dione derivatives were synthesized via 1,3-dipolar cycloaddition of azomethine N-oxides with N-(alpha-naphthyl)maleimide. The pyrrolo-isoxazole derivatives were assigned cis- and trans- configurations (3-A and 3-B) with respect to proton C-3-H on azomethinic carbon on the basis of their H-1 NMR. The reaction proceeds through cis- endo addition rule indicating the predominance of cis isomer. The cis- and trans-isomers of a prototype compound 3a i.e., compound 3a-A and compound 3a-B were evaluated for anti-stress activity in immobilization-induced acute stress. Compound 3a-A (5 and 10 mg/kg) and compound 3a-B (10 mg/kg) attenuated immobilization stress-induced behavioral alterations in Swiss albino mice suggesting that pyrrolo-isoxazole may serve as lead molecule for the development of anti-stress agents. (C) 2011 Elsevier Masson SAS. All rights reserved.