Insoluble organic UV screening agents of aryl vinylene ketone type, and cosmetic use thereof
申请人:——
公开号:US20030053966A1
公开(公告)日:2003-03-20
The invention relates to insoluble organic compounds containing one or more aryl vinylene ketone groups, for screening out UV radiation, in the form of fine particles with an average size of between 10 nm and 5 &mgr;m, and also to their use for protecting the skin, the hair or materials that are sensitive to UV radiation. The said compounds may be obtained by a process of grinding coarse particles in the presence of one or more suitable surfactants.
Cytoprotective compounds, pharmaceutical and cosmetic formulations, and methods
申请人:——
公开号:US20030073712A1
公开(公告)日:2003-04-17
Cytoprotective compounds, many of which are phenolic derivatives characterized by a substituted phenol having certain conjugated bonds, are useful in the treatment of certain ischemic or inflammatory conditions, including but not limited to stroke, myocardial infarction, congestive heart failure, and skin disorders characterized by inflammation or oxidative damage. They are also useful in the manufacture of pharmaceutical and cosmetic formulations for the treatment of such conditions.
Efficient Synthesis of 4,7-Dihydro-1H-oxepino[2,3-c]pyrazoles by Potassium Carbonate Promoted [4+3] Annulation of Crotonate-Derived Sulfur Ylides with Benzylidenepyrazolones
作者:Dian Wang、Xue Wang、Xuange Zhang、Zhiwei Miao
DOI:10.1055/s-0037-1610693
日期:2019.5
crotonate-derived sulfurylides with benzylidenepyrazolones using K2CO3 as the base is reported. The ready availability of starting materials and the simple cyclization procedure make this approach suitable for the preparation of a diverse array of 4,7-dihydro-1H-oxepino[2,3-c]pyrazoles in good to excellent yields. The [4+3] annulation reaction of crotonate-derived sulfurylides with benzylidenepyrazolones
专用于100的庆典日南开大学周年 抽象的 报道了以K 2 CO 3为碱的巴豆酸衍生的硫酰化物与亚苄基吡唑并酮的[4 + 3]环化反应。原料的容易获得和简单的环化程序使该方法适用于以良好或优异的收率制备各种4,7-二氢-1 H-氧代庚并[2,3- c ]吡唑。 报道了以K 2 CO 3为碱的巴豆酸衍生的硫酰化物与亚苄基吡唑并酮的[4 + 3]环化反应。原料的容易获得和简单的环化程序使该方法适用于以良好或优异的收率制备各种4,7-二氢-1 H-氧代庚并[2,3- c ]吡唑。
Synthesis, crystal structure, Hirshfeld surface analysis, biological evaluation, DFT calculations, and in silico ADME analysis of 4-arylidene pyrazolone derivatives as promising antibacterial agents
acid. The prepared compounds were characterized by physical and spectroscopic techniques and for compound 3i by single crystal X-ray diffraction analysis. Theoretical calculations such as molecularstructure optimization, frontier molecular orbitals, molecular electrostatic potential, and molecular descriptors have been performed in order to get insight into the molecularstructure and chemical reactivity
摘要 本文描述了一系列由氨基磺酸催化的 4-亚芳基-1H-吡唑-5(4H)-酮衍生物 (3a-i) 的超声辅助合成。制备的化合物通过物理和光谱技术进行表征,化合物 3i 通过单晶 X 射线衍射分析进行表征。已经进行了分子结构优化、前沿分子轨道、分子静电势和分子描述符等理论计算,以深入了解合成化合物的分子结构和化学反应性。评估了所有化合物对六种细菌菌株的抗菌活性,发现这些化合物是革兰氏阳性菌的良好抑制剂,而不是革兰氏阴性菌。此外,
Rational Design to Construct Pyridinonethiol and Its Annulated Frameworks of Expected Significant Antitumor Activity and Geometrical Optimizations
作者:Wafaa S. Hamama、Mona E. Ibrahim、Eslam A. Ghaith、Hanafi H. Zoorob
DOI:10.1002/jhet.2756
日期:2017.5
thioglycolic acid as mercaptoacetyl transfer agent to build new pyridinonethiol derivatives via multicomponent domino reactions of 1 with different acyclic or cyclic α,β‐unsaturated carbonyl compounds and aniline using CeCl3∙7H2O/KI as Lewis acid catalyst. Furthermore, the new synthesized compounds were biologically evaluated for antitumor efficiency. The geometries and normal modes of vibrations obtained
我们利用2-甲基-2-苯基-1,3-氧杂硫杂环戊烷-5-(1)作为巯基乙酰基转移剂作为活化巯基乙酸的载体,通过1与不同的无环或多环多米诺骨牌反应生成新的吡啶酮硫醇衍生物。CeCl 3 ∙7H 2 O / KI作为路易斯酸催化剂,生成环状α,β-不饱和羰基化合物和苯胺。此外,对新合成的化合物进行了抗肿瘤功效的生物学评估。通过计算获得的振动的几何形状和法线模式与实验观察到的数据非常吻合。