Synthesis of 2,4,6-trisubstituted pyrimidine and triazine heterocycles as antileishmanial agents
摘要:
A series of 2,4,6 trisubstituted pyrimidines and triazines have been synthesized and screened for its in vitro antileishmanial activity profile in promastigote model. Nine compounds have shown > 94% inhibition against promastigotes at a concentration of 10 mu g/mL. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis of 5-Aryl-3-(methylsulfanyl)-1<i>H</i>-pyrazoles<i>via</i>Three-Component Reaction of 1,1-Bis(methylsulfanyl)-2-nitroethene, Aromatic Aldehydes, and Hydrazine
An efficient approach for the preparation of functionalized 5‐aryl‐3‐(methylsulfanyl)‐1H‐pyrazoles 2 is described. This three‐component reaction between benzaldehydes 1, NH2NH2⋅H2O, and 1,1‐bis(methylsulfanyl)‐2‐nitroethene proceeds in EtOH under reflux conditions in good‐to‐excellent yields. The structures of 2 were corroborated spectroscopically (IR, 1H‐ and 13C‐NMR, and EI‐MS). A plausible mechanism
Synthesis and crystal structures of Group 6 metal carbonyl complexes containing S-rich bis(pyrazol-1-yl)methane ligands
作者:Liang-Fu Tang、Wen-Li Jia、Zhi-Hong Wang、Ji-Tao Wang、Hong-Gen Wang
DOI:10.1016/s0022-328x(02)01112-9
日期:2002.4
temperature affords (NN)M(CO)4 derivatives, in which some complexes contain asymmetric substituted bis(pyrazol-1-yl)methane ligands. The X-ray crystal structure analyses indicate that the sulfur atoms in these complexes do not take part in the coordination to the metal centers, and S-rich bis(pyrazol-1-yl)methanes actually act as bidentate chelating ligands by two nitrogen atoms. It is also interesting