A mild, scalable iodine-mediated oxidative cross-coupling reaction of arylhydrazines and thiols for construction of thioethers (sulfides) in the absence of any transition metals or photocatalysts is disclosed. A variety of unsymmetrical diaryl sulfides with broad substrate scope both on thiols and hydrazines were synthesized in high yields in water at room temperature. Furthermore, to demonstrate the
[EN] PYRAZOLOPYRIMIDINES AS KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASE SOUS FORME DE PYRAZOLOPYRIMIDINES
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2004009602A1
公开(公告)日:2004-01-29
The present invention relates generally to inhibitors of the kinases and more particularly to novel pyrazolopyrimidine compounds.
本发明一般涉及激酶的抑制剂,更具体地涉及新型吡唑吡嘧啶化合物。
6-Arylmethyl-substituted pyrazolopyrimidines
申请人:Hendrix Martin
公开号:US20070161662A1
公开(公告)日:2007-07-12
The invention relates to novel 6-arylmethyl-substituted pyrazolopyrimidines, process for their preparation and their use for producing medicaments for improving perception, concentration, learning and/or memory.
Several 3-carbonyl (1–26), 3-acyl (27–52), and 3-carboxyhydrazido (53–58) coumarins have been synthesized in high yields (72–99%) and tested in vitro for their human monoamine oxidase A and B (hMAO-A and hMAO-B) inhibitory activity. Different substituents on the coumarin nucleus were evaluated for their effect on biological activity and isoform selectivity. Substitution at position C7 of the 3-ethyl
Synthesis of 2,3-dihydro-1<i>H</i>-imidazo[1,2-<i>b</i>]pyrazoles
作者:Kurt Pilgram
DOI:10.1002/jhet.5570170713
日期:1980.11
Two novel 2,3-dihydro-1H-imidazo[1,2-b]pyrazole derivatives 7 and 8 have been prepared by hydrazinolysis with 2,4-dinitrophenylhydrazine of 1-(benzylideneamino)-2-(2-ethoxycarbonyl-2-nitromethylidene)-imidazolidine 4. The precursor 4 was conveniently prepared from ethyl nitroacetate and 1-(benzylidene-amino)-2-(methylthio)imidazoline 3. Two examples are presented in which ethyl aceto(and trifluoroaceto)acetate
通过与1-(苄基亚氨基)-2-(2-乙氧基羰基-2)的2,4-二硝基苯肼进行肼解反应,制备了两种新颖的2,3-二氢-1 H-咪唑并[1,2- b ]吡唑衍生物7和8。 -硝基亚甲基)-咪唑烷4。前体4方便地由硝基乙酸乙酯和1-(亚苄基-氨基)-2-(甲硫基)咪唑啉3制备。给出了两个实例,其中两个都具有β-肼基丙烯酸酯排列的乙酰乙酸乙酯(和三氟乙酰)乙酸乙酯2-硝基苯基-吡喃酮9和10在含有盐酸的乙醇中回流,从而转化为吡唑啉酮在图11和图12中,分别为吡唑13和14以及酮2-硝基苯基phenyl唑酮15和16。