4771-31-7Relevant articles and documents
Discovery of 3,5-dimethylisoxazole derivatives as novel, potent inhibitors for bromodomain and extraterminal domain (BET) family
Fang, Lincheng,Hu, Zhaoxue,Yang, Yifei,Chen, Pan,Zhou, Jinpei,Zhang, Huibin
supporting information, (2021/04/15)
Bromodomain and extra-terminal (BET) is a promising therapeutic target for various hematologic cancers. We used the BRD4 inhibitor compound 13 as a lead compound to develop a variety of compounds, and we introduced diverse groups into the position of the compound 13 orienting toward the ZA channel. A series of compounds (14–23, 38–41, 43, 47–49) bearing triazolopyridazine motif exhibited remarkable BRD4 protein inhibitory activities. Among them, compound 39 inhibited BRD4(BD1) protein with an IC50 of 0.003 μM was superior to lead compound 13. Meanwhile, compound 39 possess activity, IC50 = 2.1 μM, in antiproliferation activity against U266 cancer cells. On the other hand, compound 39 could arrest tumor cells into the G0/G1 phase and induce apoptosis, which was consistent with its results in inhibiting cell proliferation. Biological and biochemical data suggest that BRD4 protein might be a therapeutic target and that compound 39 is an excellent lead compound for further development.
Design, synthesis, fungicidal activities and structure–activity relationship studies of (?)-borneol derivatives containing 2-aryl-thiazole scaffold
Huang, Danling,Zheng, Shumin,Zhang, Tianyuan,Cheng, Yong-Xian
supporting information, (2021/06/07)
A series of (-)-borneol derivatives containing 2-aryl-thiazole scaffold were designed, synthesized, and characterized by 1H NMR, 13C NMR, and HRMS. The fungicidal activities of these novel compounds against Fusarium oxysporum, Magnaporthe grisea, Botrytis cinerea, and Penicillium digitatum were evaluated. The results indicated that (1S,2R,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl(Z)-4-oxo-4-(((2-phenylthiazol-4-yl)methyl)amino)but-2-enoate (6a) displayed potential fungicidal activities with broad spectrum. Especially, 6a exhibited an IC50 value of 48.5 mg/L against P. digitatum, which has higher fungicidal activity than commercial products hymexazol and amicarthiazol. Moreover, (1S,2R,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl-4-oxo-4-(((2-phenylthiazol-4-yl)methyl)amino)butanoate (5a) possesses an IC50 value of 24.3 mg/L against B. cinerea, comparable to hymexazol and far superior to amicarthiazol. Furthermore, the superficial structure–activity relationship was discussed, which might be helpful for discovering novel fungicides.
Design, synthesis, and bioactivities of novel pyridazinone derivatives containing 2-phenylthiazole or oxazole skeletons
Dang, Mingming,Liu, Minhua,Huang, Lu,Ou, Xiaoming,Long, Chuyun,Liu, Xingping,Ren, Yeguo,Zhang, Ping,Huang, Mingzhi,Liu, Aiping
, p. 4088 - 4098 (2020/10/02)
A series of novel pyridazinone derivatives were designed and synthesized by replacing 4-(tert-butyl)phenyl moiety of pyridaben with 2-phenylthiazole or oxazole fragments via activity substructure connecting approach. The structures of all target compounds were characterized through NMR, MS, and elemental analysis. Bioassay results exhibit that most compounds showed potent bioactivities against Aphis fabae, Tetranychus urticae, Erysiphe graminis, and/or Puccinia polysora. Among the newly synthesized compounds, 2-(tert-butyl)-4-chloro-5-(((2-phenylthiazol-4-yl)methyl)thio)pyridazin-3(2H)-one (12b) displays remarkable insecticidal activity against A fabae. Its LC50 value (2.73 mg/L) is better than that of pyridaben (5.46 mg/L), although inferior to that of imidacloprid (0.51 mg/L). In addition to its extraordinary insecticidal activity, compound 12b also exerts 96.9% fungicidal activities against P polysora at 500 mg/L in vivo, significantly superior to that of pyridaben (50.0%), while slightly lower than that of tebuconazole (100%). This article discusses the synthesis, bioassay results, and structure-activity relationship of this series of novel pyridazinone derivatives.
