Studies on heterocyclic chemistry. Part XII. Tautomerism of α-(5-oxo-Δ<sup>3</sup>-isoxazolin-4-yl)benzylphosphonates
作者:Tarozaemon Nishiwaki、Koichi Kondo
DOI:10.1039/p19720000090
日期:——
α-(5-Oxo-Δ3-isoxazolin-4-yl)benzylphosphonates (2) mostly exist in the NH form in the solid state, and in the OH form in non-polar solvents, owing to chelation with the phosphonyl group. The tautomeric equilibrium in solution is influenced by the nature of the 3-substituent in the isoxazole ring; the 3-methyl compounds exist partially in the NH form. A modified synthesis of these compounds is described
chemoselective reaction between 5-aminoisoxazoles and α-diazocarbonyl compounds has been described. Both Wolff rearrangement and N–H insertion products can be obtained selectively by the judicious choice of reaction conditions. In the case of the Wolff rearrangementreactions, the N-isoxazole amides are accessed as the sole products under thermal conditions. On the other hand, α-amino acid derivatives
An enantioselective aza-Friedel–Crafts reaction of 5-aminoisoxazoles with isatin-derived <i>N</i>-Boc ketimines
作者:Hui Liu、Yingkun Yan、Min Li、Xiaomei Zhang
DOI:10.1039/d1ob00374g
日期:——
By employing a chiral phosphoric acid as a catalyst, an enantioselective aza-Friedel–Crafts reaction of 5-aminoisoxazoles with isatin-derived N-Boc ketimines was realized. The reaction provided a wide variety of novel 3-isoxazole 3-amino-oxindoles with good yields (up to 99%) and moderate to good enantioselectivities (up to 99%). The absolute configuration of one product was assigned by X-ray crystal
Computer‐guided drugdesign is a powerful tool for drug discovery. Herein we disclose the use of this approach for the discovery of dual FMS‐like receptor tyrosine kinase‐3 (FLT3)–Aurora A inhibitors against cancer. An Aurora hit compound was selected as a starting point, from which 288 virtual molecules were screened. Subsequently, some of these were synthesized and evaluated for their capacity to inhibit FLT3
计算机指导的药物设计是药物发现的强大工具。本文中,我们公开了使用这种方法来发现双重FMS样受体酪氨酸激酶3(FLT3)– Aurora A抗癌抑制剂。选择了一个极光命中化合物作为起点,从中筛选了288个虚拟分子。随后,合成了其中一些化合物,并评估了它们抑制FLT3和Aurora激酶A的能力。为了进一步增强FLT3抑制作用,通过简化策略和生物等位取代对先导化合物进行了结构-活性关系研究,然后使用计算机引导的药物设计,可根据有利的结合能对带有各种不同末端基团的分子进行优先排序。然后合成选定的化合物,并评估其生物活性。这些,50的7 n M值。因此,它被认为是进一步发展的极有希望的候选者。
[EN] ISOXAZOLOPYRIDINE OREXIN RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DES RÉCEPTEURS D'OREXINE DE TYPE ISOXAZOLOPYRIDINE
申请人:MERCK SHARP & DOHME
公开号:WO2013062858A1
公开(公告)日:2013-05-02
The present invention is directed to isoxazolopyndine compounds which are antagonists of orexin receptors. The present invention is also directed to uses of the isoxazolopyndine compounds described herein in the treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to pharmaceutical compositions comprising these compounds. The present invention is also directed to uses of these pharmaceutical compositions in the prevention or treatment of such diseases in which orexin receptors are involved.