Design, synthesis, insecticidal activity and 3D-QSR study for novel trifluoromethyl pyridine derivatives containing an 1,3,4-oxadiazole moiety
作者:F. Z. Xu、Y. Y. Wang、D. X. Luo、G. Yu、S. X. Guo、H. Fu、Y. H. Zhao、J. Wu
DOI:10.1039/c8ra00161h
日期:——
A series of trifluoromethyl pyridine derivatives containing1,3,4-oxadiazolemoiety was designed, synthesized and bio-assayed for their insecticidal activity. The result of bio-assays indicated the synthesized compounds exhibited good insecticidal activity against Mythimna separata and Plutella xylostella, most of the title compounds show 100% insecticidal activity at 500 mg L−1 and >80% activity at
设计、合成了一系列含有1,3,4-恶二唑部分的三氟甲基吡啶衍生物,并对其杀虫活性进行了生物测定。生物测定结果表明,合成的化合物对Mythimna separata和Plutella xylostella表现出良好的杀虫活性,大多数标题化合物在 500 mg L -1 时表现出 100% 的杀虫活性,在250 mg L -1时表现出大于 80% 的杀虫活性。两种害虫。化合物E18和E27对Mythimna separata的LC 50值分别为38.5和30.8 mg L -1,接近阿维菌素(29.6 mg L -1); 化合物E5、E6、E9、E10、E15、E25、E26和E27在 250 mg L -1下显示出 100% 的活性,优于毒死蜱 (87%)。提出了具有良好可预测性的 CoMFA 和 CoMSIA 模型,表明苯环 2 位和 4 位具有适当体积的吸电子基团可以增强杀虫活性。
Synthesis of 2-Amino-1,3,4-oxadiazoles through Elemental Sulfur Promoted Cyclization of Hydrazides with Isocyanides
A novel sulfur‐promoted cyclization of hydrazides and isonitriles to produce 1,3,4‐oxadiazole has been developed. The method is operationally simple and compatible with a wide scope of substrates and various 2‐amino‐ 1,3,4‐oxadiazoles are efficiently obtained in good yields.
[EN] DIFLUORO- AND TRIFLUORO-ACETYL HYDRAZIDES AS SELECTIVE HDAC6 INHIBITORS<br/>[FR] HYDRAZIDES DIFLUORO- ET TRIFLUORO-ACÉTYLE UTILISÉS EN TANT QU'INHIBITEURS SÉLECTIFS DE HDAC6
申请人:[en]ITALFARMACO S.P.A.
公开号:WO2024033293A1
公开(公告)日:2024-02-15
The present invention relates to acylhydrazides obtained in situ by enzymatic hydrolysis of the parent prodrug 2-(difluoromethyl)- or 2-(trifluoromethyl)-1,3,4- oxadiazole, in histone deacetylase 6 (HDAC6).
Synthesis and bioactivity of sulfide derivatives containing 1,3,4-oxadiazole andpyridine
A series of novel sulfide derivatives containing 1,3,4-oxadiazole and pyridine were synthesized, characterized, and tested for their antibacterial activity against tobacco bacterial wilt and rice bacterial blight and for insecticidal activity toward diamondback moth. The results showed that some compounds had good insecticidal and bactericidal activity, e.g., the activities of compounds 6e and 6g-6j toward tobacco bacterial wilt were much better than those of commercial thiodiazole-copper, and some of the synthesized compounds possessed good insecticidal activity against Plutella xylostella. Compounds 6d, 6h, 6j, 6l, 6p, 6r, and 6p displayed over 93% activity at 500 mg L$^-1}$.