Potent and Selective Inhibitors of<i>Trypanosoma cruzi</i>Triosephosphate Isomerase with Concomitant Inhibition of Cruzipain: Inhibition of Parasite Growth through Multitarget Activity
作者:Elena Aguilera、Javier Varela、Estefanía Birriel、Elva Serna、Susana Torres、Gloria Yaluff、Ninfa Vera de Bilbao、Beatriz Aguirre-López、Nallely Cabrera、Selma Díaz Mazariegos、Marieta Tuena de Gómez-Puyou、Armando Gómez-Puyou、Ruy Pérez-Montfort、Lucia Minini、Alicia Merlino、Hugo Cerecetto、Mercedes González、Guzmán Alvarez
DOI:10.1002/cmdc.201500385
日期:2016.6.20
Triosephosphate isomerase (TIM) is an essential Trypanosoma cruzi enzyme and one of the few validated drug targets for Chagas disease. The known inhibitors of this enzyme behave poorly or have low activity in the parasite. In this work, we used symmetrical diarylideneketones derived from structures with trypanosomicidal activity. We obtained an enzymatic inhibitor with an IC50 value of 86 nm without
磷酸丙糖异构酶(TIM)是一种必不可少的克鲁斯锥虫酶,也是查加斯病的少数经过验证的药物靶标之一。该酶的已知抑制剂在寄生虫中表现较差或具有较低的活性。在这项工作中,我们使用了具有锥虫杀螨活性的对称二芳基酮。我们获得了一种酶抑制剂,IC 50值为86 n m对哺乳动物酶无抑制作用。这些分子还影响了抗寄生虫的另一种必需蛋白水解酶Cruzipain。这种双重活性对于避免抗药性问题很重要。在体外研究了该化合物对付该寄生虫的表鞭鞭毛形式,并评估了其对哺乳动物细胞的非特异性毒性。作为概念证明,还对三种最佳衍生物进行了体内分析。这些衍生物中的一些表现出比参考药物更高的体外锥虫杀伤活性,并且可以有效地保护感染的小鼠。另外,这些分子可以通过简单且经济的绿色合成途径获得,这是未来被忽视疾病药物研发中的重要特征。
Ag/P-Stereogenic Phosphine-Catalyzed Enantioselective 1,3-Dipolar Cycloadditions: A Method to Optically Active Pyrrolidines
A Ag/P-stereogenic phosphine-complex-catalyzed 1,3-dipolarcycloaddition of azomethine ylides with electron-deficientolefins is reported. In this reaction, highly functionalized pyrrolines with a spiro-quaternary stereogenic center were obtained in good yields (up to 99%) with excellent levels of diastereo- (up to >20:1 dr) and enantioselectivities (up to >99% ee). The chirality of adducts was controlled
Synthesis and spectroscopic and structural studies of cross-conjugated dienones derived from cyclic ketones and aromatic aldehydes
作者:S. Z. Vatsadze、M. A. Manaenkova、N. V. Sviridenkova、N. V. Zyk、D. P. Krut’ko、A. V. Churakov、M. Yu. Antipin、J. A. K. Howard、H. Lang
DOI:10.1007/s11172-006-0397-6
日期:2006.7
Cross-conjugated dienones were synthesized by the reactions of cyclic ketones with two equivalents of aromatic aldehydes under basic conditions. An NMR spectroscopic study and X-ray diffraction analysis demonstrated that all reaction products are formed as E,E isomers. Spontaneous photochemical trans-cis isomerization of cross-conjugated dienones under the scattered light in solution was observed for
交叉共轭二烯酮是通过环状酮与两当量的芳香醛在碱性条件下反应合成的。NMR 光谱研究和 X 射线衍射分析表明,所有反应产物均以 E、E 异构体的形式形成。首次观察到溶液中散射光下交叉共轭二烯酮的自发光化学反顺异构化。异构化程度主要取决于二烯酮分子中心片段的性质。合成了以前未知的 2,5-双 [(E)-(3-吡啶基) 亚甲基] 环戊酮的光化学 [2+2]-环加成产物,并通过光谱方法和 X 射线衍射进行了表征。在所使用的条件下,仅获得环丁烷加合物的一种异构体。
Small Molecule Agonists and Antagonists of NR2F6 Activity in Humans
申请人:Regen BioPharma, Inc.
公开号:US20180214413A1
公开(公告)日:2018-08-02
The present technology is directed to modulators of nuclear receptor activity, specifically to the modulation of NR2F6 activity and NR2F6 utilizing compounds, and the immune modulation and modulation of cancer stem cell activity through administration of compounds described herein to humans.
aromatic aldehydes undergoes crossed aldol condensation with ketones in the presence of a catalytic amount of Yb(OTf) 3 under solvent-free conditions to afford the corresponding α,α'-bis(substitutedbenzylidene)cycloalkanones in excellent yields without occurrence of any side reactions. This method is very general, simple and environmental friendly in contrast with the existing methods, which use many