The uses of ethyl 2-(1H-benzo[D]imidazol-2-yl)acetate to synthesis pyrazole, thiophene, pyridine and coumarin derivatives with antitumor activities
作者:R. M. Mohareb、M. S. Gamaan
DOI:10.4314/bcse.v32i3.13
日期:——
2-(1 H -benzo[ d ]imidazol-2-yl)acetate ( 3 ) was subjected to a series of heterocyclization reactions through its reaction with different chemical reagents. The resulting molecules were thiophene, pyrazole, coumarin derivatives incorporated benzo[ d ]imidazole moiety. All the synthesized compounds were determined by elemental analysis, 1 H NMR, 13 C NMR, and MS. The antitumor evaluations of the newly
在本工作中,通过与不同化学试剂反应的2-(1 H-苯并[d]咪唑-2-基)乙酸乙酯(3)进行了一系列杂环反应。所得分子为噻吩,吡唑,并入苯并[d]咪唑部分的香豆素衍生物。通过元素分析,1 H NMR,13 C NMR和MS确定所有合成的化合物。新合成产物对三种癌细胞系MCF-7(乳腺癌),NCI-H460(非小细胞肺癌)和SF-268(CNS癌症)的抗肿瘤评价表明,化合物5a,9b,9c ,17、23b和38在合成的化合物中具有最高的效力。关键词:氧代丁酰胺,噻吩,吡唑,吡喃,吡啶牛。化学 Soc。埃塞俄比亚。2018,32(3),541-557。DOI:https://dx.doi.org/10.4314/bcse.v32i3.13
Chromone compounds, pharmaceutical compositions containing the same, and
申请人:Kureha Chemical Industry Co., Ltd.
公开号:US05698575A1
公开(公告)日:1997-12-16
A chromone derivative of the formula (I): ##STR1## wherein R.sup.11 is a pyrazolyl, pyrrolyl, triazolyl, benzotriazolyl, benzimidazolyl, indazolyl, or indolyl group, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 is independently a hydrogen or halogen atom, or a hydroxy or alkoxy group, or an alkoxy group substituted with one or more alkoxy groups, and X is an oxygen or sulfur atom, or a salt thereof is disclosed. The chromone derivative inhibits the activity of matrix metalloproteinase.
POLYCYCLIC AROMATIC COMPOUND, MATERIAL FOR AN ORGANIC DEVICE, ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY APPARATUS AND LIGHTING APPARATUS
申请人:Kwansei Gakuin Educational Foundation
公开号:US20200207787A1
公开(公告)日:2020-07-02
A polycyclic aromatic compound in which a plurality of aromatic rings are connected by a boron atom and an oxygen atom, a sulfur atom or a selenium atom and substituted by a specific aryl such as anthracene, is useful as a material for an organic device. By the polycyclic aromatic compound, an organic EL device having at least one of efficiency and device life can be provided.
New synthesis of 2-benzimidazoleacetates and study of their Knoevenagel reaction
作者:Peng Hui Yang、Qun Zheng Zhang、Hong Jiang Yu
DOI:10.1007/s11164-011-0471-z
日期:2012.9
To obtain 2-benzimidazolyl acrylate 2, a new efficient synthesis of 2-benzimidazoleacetate, involving esterification of 2-benzimidazole acetic acid at low temperature as the crucial step, was developed. The generality and efficiency of the process was illustrated by the high-yield synthesis of methyl, ethyl, i-propyl, and n-butyl 2-benzimidazoleacetate. The Knoevenagel reaction of 2-benzimidazoleacetate with aromatic aldehydes was studied. It was found that only in the presence of a catalytic amount of morpholine could the Knoevenagel reaction proceed to give the expected 3-aryl-2-benzimidazolyl acrylate. A mechanism for the morpholine-catalyzed reaction is suggested.