Synthesis and Transformations of 5-Substituted 2-Aryl-7H-[1,2,4]triazolo[3,2-b][1,3]thiazin-7-ones and 2-Aryl-2,3-dihydro-4H-[1,3]thiazino[3,2-a]benzimidazol-4-ones
One step synthesis of highly functionalized thiazolo[3,2-b][1,2,4]triazole, triazolo[1,5-a]pyrimidine and triazolo[3,4-b][1,3,4]thiadiazine
作者:Tariq A. Shah、Zubair Ahmad、Niyaz A. Mir、M. Muneer、Nigam P. Rath、Musheer Ahmad
DOI:10.1039/c5ra21270g
日期:——
efficient and straightforward methodology for the preparation of novel functionalized thiazolo[3,2-b]triazole, triazolo[1,5-a]pyrimidine and triazolo[3,4-b][1,3,4]thiadiazine has been implemented with excellent yields via a one-pot catalyst-free procedure at room temperature by the reaction of dibenzoylacetylene and triazolederivatives. Single crystal X-ray diffraction has been established for structures
已经实现了一种高效,直接的方法,用于制备新型功能化的噻唑并[3,2- b ]三唑,三唑并[1,5- a ]嘧啶和三唑并[3,4- b ] [1,3,4]噻二嗪通过二苯甲酰基乙炔与三唑衍生物的反应,在室温下通过一锅无催化剂的方法获得了优异的收率。已经针对结构21、24、25、27、34、36和41建立了单晶X射线衍射。
Synthesis of some 1,2,4-triazolo[3,2-b]-1,3-thiazine-7-ones with potential analgesic and antiinflammatory activities
作者:Birsen Tozkoparan、Göknur Aktay、Erdem Yeşilada
DOI:10.1016/s0014-827x(01)01195-8
日期:2002.2
Starting from 3-substituted-1,2,4-triazole-5-thiones (1a-h), eight new 5-carbomethoxy-2-substituted-7H-1,2,4-triazolo[3,2-b]1,3-thiazine-7-ones (2a-h) were synthesized and characterized by spectral and elementary analysis. The obtained compounds were submitted to preliminary pharmacological assay to evaluate their antiinflammatory and analgesic activities as well as gastrointestinal irritation liability and acute toxicity. Among the compounds studied, compounds 2c, 2d, 2e and 2h showed most remarkable antiinflammatory activity in the carrageenan and serotonin induced edema and in the inhibition of castor oil-induced diarrhea tests. The analgesic activity of these active compounds correlated with their antimflammatory activities in the inhibition of acetic acid-induced writhing test. In gastric ulceration studies, the compounds were found safety at low dose levels (10 and 20 mg/kg). (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
Upadhyaya,V.P.; Srinivasan,V.R., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1978, vol. 16, p. 737 - 738