Cascade assembling of pyrazolin-5-ones and benzylidenemalononitriles: the facile and efficient approach to medicinally relevant spirocyclopropylpyrazolone scaffold
Pyridopyridazines, Benzimidazolopyrimidines Triazolopyrimidines, 9-Oxo-2,3,6,7-tetraazabicyclo[3.3.1]nona-3,7-diene and Aroylcinnolines from 2-Arylhydrazono-3-oxopropanals
Synthesis and Molluscicidal Activity of New Chromene and Pyrano[2,3-c]pyrazole Derivatives
作者:Fathy M. Abdelrazek、Peter Metz、Olga Kataeva、Anne Jäger、Sherif F. El-Mahrouky
DOI:10.1002/ardp.200700157
日期:2007.10
derivatives 13a–d to afford the arylidene exchange derivatives 14a–c and the pyranopyrazole derivative 15, respectively. The arylidene derivatives 10a, b react also with indane‐1,3‐dione 16 to afford the arylidene exchange derivatives 18a, b. The molluscicidalactivity of the synthesized compounds towards Biomphalaria alexandrina snails, the intermediate host of Schistosoma mansoni, was investigated and most
Waste-Free Solid-State Organic Syntheses: Solvent-Free Alkylation, Heterocyclization, and Azo-Coupling Reactions
作者:Ehab Abdel-Latif、Mohamed A. Metwally
DOI:10.1007/s00706-007-0665-7
日期:2007.8
allow for waste-free quantitative syntheses. The solid–solid reactions of α-haloketones with several pyrazolones and with thiosemicarbazones were shown to afford the corresponding pyrazolyl ethers and 4-substituted 2-(arylidenehydrazino)thiazoles. The product yields are quantitative in all cases and the products do not require purifying workup. Therefore, these reactions are truly solvent-free, sustainable
Methods and Compositions for Modulating P300/CBP Activity
申请人:Marmorstein Ronen
公开号:US20100216853A1
公开(公告)日:2010-08-26
The present invention relates to a method for identifying compounds that modulate the activity of p300/CBP. Compounds of the invention are identified by designing or screening for a compound which binds to at least one amino acid residue of the newly identified lysine-CoA inhibitor binding site, L1 loop, electronegative pocket, or electronegative groove of the HAT domain of p300/CBP and testing the compound for its ability to modulate the activity of p300/CBP. Compositions and methods for preventing or treating diseases or disorders associated with p300/CBP are also provided as is a method for producing a semi-synthetic HAT domain.
Synthesis of functionalized chromene and spirochromenes using l -proline-melamine as highly efficient and recyclable homogeneous catalyst at room temperature
commercially cheap l-proline and melamine for the synthesis of chromenes and spirochromenes (spirooxindoles) via multicomponent reactions at room temperature. Systematic studies were conducted in order to achieve desired reactivity and recyclability of the catalyst using various α-amino acids and aromatic amines as donor-acceptor pairs. Among the screened combinations, l-proline and melamine (3:1 ratio;
biologically active natural products and in synthetic chemistry and in the fields of medicinal, agrochemical, cosmetic, and pigment industries. In this work, piperidine was used as a base catalyst for the convenient synthesis of 1,4‐dihydropyrano[2,3‐c]pyrazole, 5,10‐dihydro‐4H‐benzo[g]chromene, and pyrazolo[1,2‐a] [1,2,4]triazole derivatives at ambient temperature. This methodology has several advantages
含氧杂环化合物Chromenes在具有生物活性的天然产物和合成化学以及医药,农业化学,化妆品和颜料工业领域中具有“特殊”地位。在这项工作中,哌啶被用作基础催化剂,可方便地合成1,4-二氢吡喃并[2,3- c ]吡唑,5,10-二氢-4- H-苯并[ g ]色烯和吡唑并[1, 2– a ] [1,2,4]三唑衍生物在环境温度下。该方法具有许多优点,包括使用容易获得且价格便宜的催化剂,反应时间短,产率高,后处理方便以及不需要柱色谱。