organometallic recyclable catalyst in the synthesis of coumarin–chalcone hybrids through the Claisen–Schmidt condensation of different aromatic aldehydes and 3-acetyl coumarin. The nanocomposite increased the rate and facility of the aforementioned reaction and represented a strong influence in the green synthesis of different coumarin–chalcone derivatives. The nanocatalyst has been characterized by N2 adsorption–desorption
摘要 固定在石墨化碳氮化物(ZnS NPs / gC 3 N 4)纳米复合材料上的氧化锌纳米颗粒通过有机碳可循环利用催化剂,通过不同芳族醛和3-乙酰香豆素的Claisen-Schmidt缩合反应合成香豆素-查尔酮杂化物。纳米复合材料提高了上述反应的速率和便利性,并且在不同香豆素-查尔酮衍生物的绿色合成中表现出强大的影响力。纳米催化剂的特征在于N 2吸附-解吸,傅立叶变换红外光谱,扫描电子显微镜,粉末X射线衍射和能量色散光谱。这种新颖且可持续的方法的优点是香豆素-查尔酮化合物的收率高,反应时间短,对环境无害,ZnS NPs / gC 3 N 4的可回收性以及可重用性,而不会显着降低催化活性。 图形概要
Use of Cinnamoyl Compound
申请人:Shiraki Hiroaki
公开号:US20090143368A1
公开(公告)日:2009-06-04
A composition for inhibiting the extracellular matrix gene transcription comprising a cinnamoyl compound represented by the formula (I):
and an inert carrier, or the like.
一种用于抑制细胞外基质基因转录的组合物,包括由式(I)表示的肉桂酰化合物和惰性载体等。
Analgesic study of novel pyrimidine derivatives linked with coumarin moiety
作者:Jitendra Kumar Gupta、Pramod K. Sharma、Rupesh Dudhe、Anshu Chaudhary、Avnesh Singh、P. K. Verma、Sambhu C. Mondal、Rakesh Kumar Yadav、Shivjee Kashyap
DOI:10.1007/s00044-011-9675-4
日期:2012.8
A novel series of 2-amino-4-(coumarin-3-yl)-6-substituted phenyl pyrimidines (5a-h) were synthesized from 3-acetylcoumarin (3). The structures of the synthesized compounds were elucidated by I.R., H-1 NMR, C-13 NMR, and Mass spectroscopic techniques. The synthesized compounds were screened for in vivo analgesic activities at a dose of 20 mg/kg body weight (b.w). Among them, compounds 5b and 5h exhibited significant analgesic activity comparable with control as well as standard drug diclofenac sodium using acetic acid-induced writhing model.
Cu(II) and Ni(II) complexes of coumarin derivatives with fourth generation flouroquinolone: synthesis, characterization, microbicidal and antioxidant assay