Molybdenum hexacarbonyl mediated synthesis of indolin-2-one & azaindolin-2-one under catalyst free conditions
摘要:
Syntheses of indolin-2-ones and azaindolin-2-ones have been realized. The strategy involves the formation of tosylhydrazone from tosylhydrazine and 2-amino aryl or pyridyl aldehydes/ketones which then undergo intramolecular aminocarbonylation to afford indolin-2-ones and azaindolin-2-ones. The generality of the method was demonstrated by synthesizing C3 substituted and unsubstituted indolin-2-one and azaindolin-2-one derivatives. (C) 2015 Elsevier Ltd. All rights reserved.
Silver‐Catalyzed Three‐Component Coupling Reaction of Amines, 2‐Isocyanobenzaldehydes, and 2,2,2‐Trifluorodiazoethane and Synthesis of Trifluoromethyl‐Substituted Indolo[1,2‐
<i>c</i>
]quinazolines
A silver‐catalyzedthree‐component coupling reaction of amines, 2‐isocyanobenzaldehydes, and 2,2,2‐trifluorodiazoethane has been developed. This reaction provides an efficient method for the construction of CF3‐containing dihydroquinazolines. On the basis of this reaction, using trifluorodiazoethyl‐substituted dihydroquinazolines as synthons, trifluoromethyl‐substituted indolo[1,2‐c]quinazolines were
已开发出一种银催化的胺,2-异氰基苯甲醛和2,2,2-三氟重氮乙烷的三组分偶联反应。该反应为构建含CF 3的二氢喹唑啉提供了一种有效的方法。在此反应的基础上,使用三氟重氮乙基取代的二氢喹唑啉作为合成子,通过TBHP / KI介导的顺序分子内环化和芳构化过程,高收率制备了三氟甲基取代的吲哚[1,2- c ]喹唑啉。
Identification of Inhibitors of Cholesterol Transport Proteins Through the Synthesis of a Diverse, Sterol‐Inspired Compound Collection
A general strategy for the identification of selective cholesterol transport protein inhibitors through the synthesis of a diverse sterol-inspired compound collection is presented. Fusion of a primary sterol scaffold to diverse secondary natural product-derived scaffolds afforded hits against all of the Aster family of cholesterol transport proteins and selective inhibitors of Aster-C.
Repurposing an Aldolase for the Chemoenzymatic Synthesis of Substituted Quinolines
作者:Douglas J. Fansher、Richard Granger、Satinderpal Kaur、David R. J. Palmer
DOI:10.1021/acscatal.1c01398
日期:2021.6.18
Quinoline derivatives are important natural products and pharmaceuticals, but their synthesis can be challenging due to poor yields, harsh reaction conditions, and instability of starting materials. Here we report the chemoenzymatic synthesis of quinaldic acids under mild conditions using an aldolase, trans-o-hydroxybenzylidenepyruvate hydratase-aldolase (NahE, or HBPA). A series of 2-aminobenzaldehydes
喹啉衍生物是重要的天然产物和药物,但由于收率低、反应条件苛刻和起始材料不稳定,它们的合成具有挑战性。在这里,我们报告了使用醛缩酶、反式-o-羟基亚苄基丙酮酸水合酶-醛缩酶(NahE 或 HBPA)在温和条件下化学酶法合成喹哪二酸。在 NahE 存在下,一系列源自相应硝基类似物还原的 2-氨基苯甲醛与丙酮酸反应,以高达 93% 的分离产率得到取代的喹啉。该反应不同于体内NahE 催化的羟醛缩合,而是类似于由其同源物二氢吡啶二羧酸合酶催化的杂环形成。
[EN] P2X3 AND/OR P2X2/3 COMPOUNDS AND METHODS<br/>[FR] COMPOSÉS P2X3 ET/OU P2X2/3 ET MÉTHODES ASSOCIÉES
申请人:ASANA BIOSCIENCES LLC
公开号:WO2018064135A1
公开(公告)日:2018-04-05
The present disclosure provides novel compounds and methods for preparing and using these compounds. In one embodiment, the compounds are of the structure of formula (I), wherein R1-R7 are defined herein. In a further embodiment, these compounds are useful in method for regulating one or both of the P2X3 or P2X2/3 receptors. In another embodiment, these compounds are useful for treating pain in patients by administering one or more of the compounds to a patient. In another embodiment, these compounds are useful for treating respiratory dysfunction in patients by administering one or more of the compounds to a patient.
Plant antitumor agents. 30. Synthesis and structure activity of novel camptothecin analogs
作者:Monroe E. Wall、Mansukh C. Wani、Allan W. Nicholas、Govindarajan Manikumar、Chhagan Tele、Linda Moore、Anne Truesdale、Peter Leitner、Jeffrey M. Besterman
DOI:10.1021/jm00070a013
日期:1993.9
A large number of camptothecin (CPT) analogs have been prepared in the 20S, 20RS, and 20R configurations with a number of ring A substituents. Topoisomerase I (T-I) inhibition data (IC50) have been obtained by standard procedures. In general, substitution at the 9 or 10 positions with amino, halogeno, or hydroxyl groups in compounds with 20S configuration results in compounds with enhanced T-I inhibition