Synthesis and immunosuppressant activity of pyrazole carboxamides
摘要:
A series of novel pyrazole carboxamides is disclosed that demonstrate strong immunosuppressant activity in rodent and human mixed leukocyte response (MLR) assays (IC50 < 1 mu M). The synthesis, biological activity, mode of action, and pharmacokinetic properties of this new lead series are discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.
QUINOLONES USEFUL AS INDUCIBLE NITRIC OXIDE SYNTHASE INHIBITORS
申请人:Smith Nicholas D.
公开号:US20080139558A1
公开(公告)日:2008-06-12
The present invention relates to novel quinolones of Formula I that inhibit inducible NOS synthase together with methods of synthesizing and using the compounds including methods for inhibiting or modulating nitric oxide synthesis and/or lowering nitric oxide levels in a patient by administering the compounds for the treatment of disease.
A series of novel phenothiazinyldihydropyridine dicarboxamides7a–7jwas synthesized by adopting a multi-step synthetic strategy and characterized through physical and spectral techniques.
standard diclofenac sodium. A hybrid integrated with a para-fluorophenyl carboxamide moiety (28) showed the highest DPPH radical scavenging activity among the chemical entities synthesized. Furthermore, the results of anticancer evaluations implied that the hybrid tethered with a phenyl carboxamide structural unit (29) exerted superior activity when compared with other hybrids against the pancreatic cancer
6-bromo-2-chloro-4-methylquinoline as a starting material. Since surprisingly little has been reported in the literature, the two synthetic steps to this compound were investigated. The synthesis involves a condensation between β-keto esters and 4-bromoaniline and the cyclization of the resulting anilides into 6-bromoquinolin-2(1H)-one, otherwise known as the Knorr reaction. The ¹H NMR monitoring of the first
在我们关于传染病的工作过程中,我们被引导准备了6-溴-2-氯-4-甲基喹啉作为起始原料。由于文献中出人意料的报道很少,因此对该化合物的两个合成步骤进行了研究。该合成涉及β-酮酸酯和4-溴苯胺之间的缩合,以及将所得的苯胺环化成6-溴喹啉-2(1 H)-一,也称为克诺尔反应。该¹第一步的1 H NMR监测使我们能够优化导致苯胺的条件,而不会出现替代的巴豆酸酯。为了说明我们的发现的范围,制备了一些具有电子吸引基团的额外的酸酐。对它们环化的研究表明,这第二步支配着一些意想不到的空间效应。除了纠正该化学中的一些说法外,该研究还导致了三步制备6-溴-2-氯-4-甲基喹啉的步骤,而4-溴苯胺的总收率为48%。 酰化-环化-杂环-喹啉-碳正离子化
Asymmetric Robinson-Type Annulation Reaction between β-Ketoamides and α,β-Unsaturated Ketones
作者:You-ming Huang、Chang-wu Zheng、Gang Zhao
DOI:10.1021/jo502904n
日期:2015.4.17
Enantioselective Robinson-type annulation reactionbetween β-ketoamide and α,β-unsaturatedketone was developed by utilizing the amino acid derived primary–secondarydiamine catalysts. The less reactive acyclic β-ketoamides employed as both electrophile and nucleophile are reported in this asymmetric tandem reaction. A number of chiralcyclohexenone derivatives containing an amide group were obtained