An expedient, regioselective synthesis of novel 2-alkylamino- and 2-alkylthiothiazolo[5,4-e]- and -[4,5-g]indazoles and their anticancer potential
摘要:
Several novel 2-alkylamino- and 2-alkylthiothiazolo[5,4-e]- and -[4,5-g]indazoles and their 6-alkyl and 8-alkyl derivatives have been synthesised in high overall yields starting from 5-nitro and 6-nitro-indazoles in a three-step route involving the regioselective cyclisation of thioureidoindazoles and indazolyl dithiocarbamates as the key steps. Some assorted thiazoloindazoles have been screened for anticancer properties, which demonstrated the anticancer potential of at least one product, justifying its further follow-up. (C) 2008 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tet.2008.05.009
作为产物:
描述:
碘甲烷 、 alkaline earth salt of/the/ methylsulfuric acid 生成 1-乙基-6-硝基吲唑
参考文献:
名称:
v. Auwers; Demuth, Justus Liebigs Annalen der Chemie, 1927, vol. 451, p. 285,302
Palladium-Catalyzed Denitrative α-Arylation of Ketones with Nitroarenes
作者:Zhirong Li、Yonggang Peng、Tao Wu
DOI:10.1021/acs.orglett.0c04104
日期:2021.2.5
The palladium-catalyzed α-arylation of ketones with readily available nitroarenes and nitroheteroarenes provides access to useful α-aryl and α-heteroaryl ketones. The use of the Pd/BrettPhos catalysts was critical to achieve high efficiency for these transformations, whereas other catalysts led to decreased yields or no conversions. The intramolecular type substrate was also applied in this methodology
The invention provides compounds of formula (I): and salts thereof wherein R1-R5 have any of the meanings described in the specification. The compounds are useful for treating bacterial infections (e.g. tuberculosis).
On the reactions of tertiary carbanions with some nitroindazoles and nitrobenzotriazoles
作者:Marek K. Bernard、Jacek Kujawski、Urszula Skierska、Andrzej K. Gzella、Wojciech Jankowski
DOI:10.3998/ark.5550190.0013.816
日期:——
The vicarious nucleophilic substitution in some nit roindazole and nitrobenzotriazole derivatives with tertiary carbanions leads almost exclusively t o products substituted para to the nitro group. As results from the theoretical calculations and st ructural evidences, such reaction outcome is due mainly to the stereoelectronic reasons in combi nation with the considerable shortening of the Cortho
某些硝基罗吲唑和硝基苯并三唑衍生物中的替代亲核取代与叔碳负离子几乎完全导致产物在硝基的对位被取代。从理论计算和结构证据来看,这种反应结果主要是由于立体电子学的原因和Cortho-CNO 2 键的显着缩短相结合。手性和前手性中心(分别为次甲基和 N 亚甲基基团)的存在通常会引起亚甲基质子信号的额外分裂,该信号在长距离上传输,前提是偶联途径中没有吡啶氮。
Therapeutic indazoles
申请人:RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY
公开号:US11186549B2
公开(公告)日:2021-11-30
The invention provides compounds of formula (I): and salts thereof wherein R1-R5 have any of the meanings described in the specification. The compounds are useful for treating bacterial infections (e.g. tuberculosis).