Preliminary SAR and biological evaluation of antitubercular triazolothiadiazine derivatives against drug-susceptible and drug-resistant Mtb strains
摘要:
Following up the SAR study of triazolothiadiazoles for their antitubercular activities targeting Mt SD in our previous study, on the principle of scaffold hopping, the C3 and C6 positions of triazolothiadiazine were examined systematically to define a preliminary structure-activity relationship (SAR) with respect to biological activity. This study herein highlights the potential of two highly potent advanced leads 6c-3, 6g-3 and several other compounds with comparable potencies as promising new candidates for the treatment of TB (6c-3, MIC-H37Rv = 0.25 mu g/mL; MIC-MDRTB = 2.0 mu g/mL; MIC-RDRTB = 0.25 mu g/mL; Mt SD-IC50 = 86.39 mu g/mL; and 6g-3, MIC-H37Rv = 1.0 mu g/mL; MIC-MDRTB = 4.0 mu g/mL; MICRDRTB = 2.0 mu g/mL; Mt SD-IC50 = 73.57 mu g/mL). Compounds 6c-3 and 6g-3 possessed a para-nitro phenyl at the 6 position showed low Vero and HepG2 cells toxicity, turning out to be two excellent lead candidates for preclinical trials. In addition, in vitro Mt SD inhibitory assay indicates that Mt SD is at least one of the targets for their antitubercular activity. Thus, they may turn out to be promising multidrug-resistance- reversing agents. (C) 2016 Elsevier Ltd. All rights reserved.
Potential Broad Spectrum Anthelmintics IV: Design, Synthesis, and Antiparasitic Screening of Certain 3,6-Disubstituted- (7H) -s -triazolo- [3,4-b][1,3,4]thiadiazine Derivatives
作者:M.A. El-Dawy、A.-Mohsen M.E. Omar、Abla M. Ismail、A.A.B. Hazzaa
DOI:10.1002/jps.2600720111
日期:1983.1
Abstract A series of 3,6-disubstituted-(7H)-s-triazolo[3,4-b][l,3,4]- thiadiazine derivatives were prepared. The compounds were designed to obtain structural similarities and/or bear isosteric relation with certain fused systems encountered in some well-known antiparasitic drugs. The substituents in all products were selected according to the Topliss scheme. Preliminary screening for antiparasitic
Exploration of a library of triazolothiadiazole and triazolothiadiazine compounds as a highly potent and selective family of cholinesterase and monoamine oxidase inhibitors: design, synthesis, X-ray diffraction analysis and molecular docking studies
作者:Imtiaz Khan、Syeda Mahwish Bakht、Aliya Ibrar、Saba Abbas、Shahid Hameed、Jonathan M. White、Usman Ali Rana、Sumera Zaib、Mohammad Shahid、Jamshed Iqbal
DOI:10.1039/c5ra00906e
日期:——
There is a high demand for the collection of small organic molecules (especially N-heterocycles) with diversity and complexity in the process of drug discovery.
在药物发现过程中,对收集具有多样性和复杂性的小有机分子(特别是N-杂环化合物)有很高的需求。
Identification of a potent new chemotype for the selective inhibition of PDE4
作者:Amanda P. Skoumbourdis、Ruili Huang、Noel Southall、William Leister、Vicky Guo、Ming-Hsuang Cho、James Inglese、Marshall Nirenberg、Christopher P. Austin、Menghang Xia、Craig J. Thomas
DOI:10.1016/j.bmcl.2008.01.028
日期:2008.2
A series of substituted 3,6-diphenyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines were prepared and analyzed as inhibitors of phosphodiesterase 4 (PDE4). Synthesis, structure-activity relationships, and the selectivity of a highly potent analogue against related phosphodiesterase isoforms are presented.
3-Aryl-6-aryl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines and analogs as activators of caspases and inducers of apoptosis and the use thereof
申请人:Cai Xiong Sui
公开号:US20080045514A1
公开(公告)日:2008-02-21
Disclosed are 3-aryl-6-aryl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines and analogs thereof, represented by the Formula I:
wherein Ar
1
, Q
2
, R
1
, R
2
, dashed line and X are defined herein. The present invention relates to the discovery that compounds having Formula I are activators of caspases and inducers of apoptosis. Therefore, the activators of caspases and inducers of apoptosis of this invention may be used to induce cell death in a variety of clinical conditions in which uncontrolled growth and spread of abnormal cells occurs.