Synthesis of Benzo[4,5]thiazolo[2,3-c][1,2,4]triazole Derivatives via C-H Bond Functionalization of Disulfide Intermediates
作者:Luis G. Ardón-Muñoz、Jeanne L. Bolliger
DOI:10.3390/molecules27051464
日期:——
3-c][1,2,4]triazoles for which two main synthetic approaches exist. Here we report a newsynthetic protocol that allows the preparation of these tricyclic compounds via the oxidation of a mercaptophenyl moiety to its corresponding disulfide. Subsequent C-H bond functionalization is thought to enable an intramolecular ring closure, thus forming the desired benzo[4,5]thiazolo[2,3-c][1,2,4]triazole. This
Using odorless thiourea as the S source, benzothiazoles and asymmetric disulfides could be obtained from thioformanilides through the tandem cyclization/nucleophilic addition/hydrolysis/nucleophilic substitution reaction. Furthermore, the obtained asymmetric disulfides could readily transfer to benzothiazoles after nitro-reduction and amide formation reaction. This metal-free and recyclable synthetic methodology offered a time-efficient, less expensive, and environmentally friendly alternative to multifunctional benzothiazoles. (C) 2015 Elsevier Ltd. All rights reserved.
Benzothiazoles as Rho-associated kinase (ROCK-II) inhibitors
A series of benzothiazole derivatives as ROCK inhibitors have been discovered. Compounds with good biochemical and cellular potency, and sufficient kinase selectivity have been identified. (C) 2009 Elsevier Ltd. All rights reserved.