A structure–activity relationship study of 1,2,4-triazolo[1,5-a][1,3,5]triazin-5,7-dione and its 5-thioxo analogues on anti-thymidine phosphorylase and associated anti-angiogenic activities
摘要:
Thirty-three 1,2,4-triazolo[1,5-a][1,3,5]triazin-5,7-dione and its 5-thioxo analogues were designed and synthesized which contained different substituents at meta- and/or para-positions of 2-phenyl or 2-benzyl ring attached to the fused ring structure. The preliminary pharmacological evaluation demonstrated that the 5-thioxo analogues of 1,2,4-triazolo[1,5-a][1,3,5]triazine exhibited a varying degree of inhibitory activity towards thymidine phosphorylase, comparable or better than reference compound, 7-Deazaxanthine (7-DX, 2) (IC50 value = 42.63 mu M). Moreover, compounds 5q and 6i displayed a mixed-type of inhibitory mechanism in the presence of variable concentrations of thymidine (dThd). In addition, selected compounds were found to have a noticeable inhibitory effect on the expression of angiogenesis markers, including VEGF and MMP-9 in MDA-MB-231 breast cancer cells. (C) 2013 Elsevier Masson SAS. All rights reserved.
Combinatorial Synthesis of 3,5-Dimethylene Substituted 1,2,4-Triazoles
作者:Scott S. Woodard、Kevin D. Jerome
DOI:10.2174/138620711794474033
日期:2011.2.1
Combinatorial cyclizations of imidates and hydrazides with methylene linked R groups, generated from the corresponding nitriles and carboxylic acids, respectively, provided a large library of 3,5-dimethylene substituted 1,2,4- trizoles.
A few 4-allyl/amino-5-aryl-1,2,4-triazoles were synthesized and tested for antibacterial and antifungal effects against Escherichia coli, Bacillus subtilis, Salmonella enteritidis, Staphylococcus aureus, Aspergillus niger and Candida albicans. 4-Allyl-5-aryl-1,2,4-triazoles were obtained by the oxidative cyclization of the appropriate 1-substituted-4-allylthiosemicarbazides and 4-amino-5-aryl-1,2,4-triazoles were obtained by cyclization of the potassium salts of appropriately substituted dithiocarbazinic acids with hydrazine hydrate. The new synthesized compounds were characterized using IR, 1H- NMR, 13C-NMR and UV spectral data together with elemental analysis.
Inhibitory Potential of New Phenolic Hydrazide-Hydrazones with a Decoy Substrate Fragment towards Laccase from a Phytopathogenic Fungus: SAR and Molecular Docking Studies
作者:Halina Maniak、Michał Talma、Mirosław Giurg
DOI:10.3390/ijms222212307
日期:——
from pathogenicfungi participates in both the delignification and neutralization of phytoantibiotics. Furthermore, it interferes with the hormone signaling in plants and catalyzes melanization. Infections of these pathogens contribute to loss in forestry, agriculture, and horticulture. As there is still a need to expand knowledge on efficient defense strategies against phytopathogenic fungi, the present
来自病原真菌的漆酶参与植物抗生素的脱木素和中和。此外,它会干扰植物中的激素信号传导并催化黑化。这些病原体的感染导致林业、农业和园艺损失。由于仍然需要扩展针对植物病原真菌的有效防御策略的知识,本研究旨在揭示有关天然和类天然羧酸半合成衍生物抑制漆酶的分子机制的更多信息。一组衍生自羧酸的酰肼 - 腙,通常包括用作诱饵底物的富电子芳烃单元,合成并用来自花斑栓菌的漆酶进行测试. 标题抑制剂的经典合成以良好到几乎定量的产率进行。90% 的测试分子在K I = 8–233 µM范围内具有活性,并显示出不同类型的作用。如此大的抑制常数使酰肼-腙成为强漆酶抑制剂。支持实验数据的分子对接研究解释了所选衍生物与酶的相互作用。结果在开发新的潜在抗真菌剂方面很有希望,以减轻植物栽培、园艺和园艺部门的损害规模。
[EN] TRIAZOLOTRIAZINE COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS DE TRIAZOLOTRIAZINE ET UTILISATIONS DE CEUX-CI
申请人:SUGEN INC
公开号:WO2005010005A1
公开(公告)日:2005-02-03
The present invention relates to compounds of the Formula (I), and their pharmaceutically acceptable salts. These compounds modulate the activity of c-Met and are therefore expected to be useful in the prevention and treatment of c-Met related disorders such as cancer.
Abstract A novel Cu(II) complex [Cu2L2(NO3)2] with 2-hydroxy-1-naphthaldehyde-(4’hydroxy)phenylacetyl hydrazone (C19H14N2O2·H2O, HL) was synthesized. The structure of [Cu2L2(NO3)2] was characterized by X-ray single-crystal diffraction and can be described as a distorted rectangular pyramid with binuclear coordination. IR, UV–vis and EPR spectra are used to discuss the structure of Cu(II) complex in different