Synthesis of aminocyanopyrazoles via a multi-component reaction and anti-carbonic anhydrase inhibitory activity of their sulfamide derivatives against cytosolic and transmembrane isoforms
作者:Fatma Allouche、Fakher Chabchoub、Fabrizio Carta、Claudiu T. Supuran
DOI:10.3109/14756366.2012.720573
日期:2013.4.1
were converted to the corresponding sulfamides by reaction with sulfamoyl chloride. The aminopyrazoles incorporating phenyl and tosyl moieties were tested as inhibitors of four carbonic anhydrase (CA, EC 4.2.1.1) isoforms, the human (h) hCA I, II, IX and XII. Many of them showed low micromolar or submicromolar inhibition of these enzymes. The corresponding sulfamides were low nanomolar CA inhibitors.
series of novel pyrazolo[3,4-d]pyrimidin-4-one derivatives were synthesized and evaluated for their anti-phosphodiesterase-5 (PDE-5) activity. A total of 28 compounds, containing alkyl and aryl groups at the 1-N and 3-C positions on the pyrazole ring, and also bearing different alkyl substituents on the piperazine ring were synthesized. Four compounds (4d, 5d, 6d, and 5o) were found to have better
Design, synthesis and anti-acetylcholinesterase evaluation of some new pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine derivatives
作者:Anis Romdhane、Abderrahim Ben Said、Maher Cherif、Hichem Ben Jannet
DOI:10.1007/s00044-016-1576-0
日期:2016.7
The target new hybrid molecule types pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidines phosphonates 4 and 2-(coumarin-3’’-yl)-7-phenylpyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidines 5 were prepared via Michaelis–Arbuzov rearrangement (Arbuzov reaction) of pyrazolotriazolopyrimidines chloride 3a–c, with trialkyl phosphate and Knoevenagel reaction of 2-cyanomethyl derivatives 3d–f with salicylic aldehyde
目标新型杂合分子类型为吡唑并[4,3 - e ] -1,2,4-三唑并[1,5- c ]嘧啶膦酸酯4和2-(香豆素-3''-基)-7-苯基吡唑并[4]通过吡唑并三唑并嘧啶氯化物3a–c的Michaelis–Arbuzov重排(Arbuzov反应),磷酸三烷基酯和2-氰基甲基的Knoevenagel反应制备了,3- e -1,2,4-三唑并[1,5- c ]嘧啶5衍生物3d–f分别含有水杨醛。从氨基吡唑1开始,分两步获得前体3。目标化合物4和5通过1 H NMR,13 C NMR,31 P NMR,IR和HRMS完全表征。对化合物4和5的抗乙酰胆碱酯酶活性进行了评估,结果表明它们具有显着的活性(IC 50 = 1.73–39.86 µM),并对这些化合物的初步SAR进行了研究。
Synthesis of new pyrazole and antibacterial pyrazolopyrimidine derivatives
作者:Ameur RAHMOUNI、Anis ROMDHANE、Abderrahim BEN SAID、Kaouther MAJOULI、Hichem BEN JANNET
DOI:10.3906/kim-1303-20
日期:——
3-Substituted-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-amines 2a--c were synthesized by treating 5-aminopyrazole-4-carbonitriles 1a--c with formamide. The reactivity of compounds 1a--c towards some cyclic anhydrides was studied. The condensation of 5-aminopyrazole-4-carbonitrile 1b with triethylorthoformate gives imidate 7b, which reacts with a series of primary amines and leads to pyrazolo[3,4-d]pyrimidine-4-amines 9 and 10. The reaction of imidate 7b with ammonia and hydroxylamine afforded pyrazolopyrimidine 2b and pyrazolo[3,4-d]pyrimidin-5-(4H)-ol 11, respectively. The synthesized compounds were completely characterized by ^1H NMR, ^13}C NMR, IR, and HRMS. The antibacterial activity of some new synthesized compounds was evaluated and appeared to be significant.
PYRROLIDINYL UREA, PYRROLIDINYL THIOUREA AND PYRROLIDINYL GUANIDINE COMPOUNDS AS TRKA KINASE INHIBITORS
申请人:Allen Shelley
公开号:US20150166564A1
公开(公告)日:2015-06-18
Compounds of Formula I: or stereoisomers, tautomers, or pharmaceutically acceptable salts, or solvates or prodrugs thereof, where R
1
, R
2
, R
a
, R
b
, R
c
, R
d
, X, Y, B, and Ring C are as defined herein, and wherein the Y—B moiety and the NH—C(═X)—NH moiety are in the trans configuration, are inhibitors of TrkA kinase and are useful in the treatment of diseases which can be treated with a TrkA kinase inhibitor such as pain, cancer, inflammation, neurodegenerative diseases and certain infectious diseases.