P3-P4 ureas and reverse carbamates as potent HCV NS3 protease inhibitors: Effective transposition of the P4 hydrogen bond donor
作者:Brian L. Venables、Ny Sin、Alan Xiangdong Wang、Li-Qiang Sun、Yong Tu、Dennis Hernandez、Amy Sheaffer、Min Lee、Cindy Dunaj、Guangzhi Zhai、Diana Barry、Jacques Friborg、Fei Yu、Jay Knipe、Jason Sandquist、Paul Falk、Dawn Parker、Andrew C. Good、Ramkumar Rajamani、Fiona McPhee、Nicholas A. Meanwell、Paul M. Scola
DOI:10.1016/j.bmcl.2018.04.009
日期:2018.6
A series of tripeptidic acylsulfonamide inhibitors of HCV NS3 protease were prepared that explored structure-activity relationships (SARs) at the P4 position, and their in vitro and in vivo properties were evaluated. Enhanced potency was observed in a series of P4 ureas; however, the PK profiles of these analogues were less than optimal. In an effort to overcome the PK shortcomings, modifications to
Adsorption and stability of chiral modifiers based on 1-(1-naphthyl)-ethylamine for Pt catalysed heterogeneous asymmetric hydrogenations
作者:Fabian Meemken、Titian Steiger、Mareike C. Holland、Ryan Gilmour、Konrad Hungerbühler、Alfons Baiker
DOI:10.1039/c4cy01136h
日期:——
efficiency and extending the versatility of asymmetrichydrogenations on chirally-modified metal catalysts. Adsorptive anchoring and structural stability of the simple chiral modifier (R)-1-(1-naphthyl)-ethylamine [(R)-NEA] and the upgraded, secondary amine chiral modifier (R,S)-pantoylnaphthylethylamine [(R,S)-PNEA] have been investigated under catalytichydrogenation conditions. Using attenuated total reflection-infrared
为了调节效率并扩展手性改性金属催化剂上不对称氢化的多功能性,非常需要适用于模块结构的合成手性改性剂。简单手性改性剂(R)-1-(1-萘基)-乙胺[(R)-NEA]和升级的仲胺手性改性剂(R,S)-泛酰基萘乙胺[(R,S)-PNEA]已在催化加氢条件下进行了研究。使用衰减全反射红外(ATR-IR)光谱,(R)-NEA和(R,S)-PNEA在技术含量为5 wt%的Pt / Al 2 O 3催化剂的固液界面处进行了研究。除萘基外,(R,S)-PNEA还通过其泛酰基部分锚定在Pt上,从而为酮基内酯(KPL)的不对称氢化提供了增强的锚定作用和更好的手性表面位点。讨论了影响基于NEA的手性改性剂稳定性的因素。最近发现的(R,S)-PNEA,(S)-氨基-4,4-二甲基-二氢呋喃-2-酮[(S)-AF]的手性片段化产物在赋予化合物对映选择性方面不起作用。 KPL不对称氢化。
[EN] ATAZANAVIR METABOLITE DERIVATIVES<br/>[FR] DÉRIVÉS DE MÉTABOLITES D'ATAZANAVIR
申请人:CONCERT PHARMACEUTICALS INC
公开号:WO2012170792A1
公开(公告)日:2012-12-13
The present invention provides a compound of Formula (I) or (II) or a pharmaceutically acceptable salt of any of the foregoing, wherein each of the variables is as defined herein. The compounds of the invention can be used in therapy, for example, to improve the efficacy of a therapeutic agent that is either (i) metabolized by a liver metabolic enzyme; (ii) transported by an efflux pump; or (iii) a combination of (i) and (ii), especially a HCV protease inhibitor or a HIV protease inhibitor.
申请人:GlaxoSmithKline Intellectual Property Development Limited
公开号:US11149035B2
公开(公告)日:2021-10-19
A compound of formula (I)
wherein R1, R2, R3, R4, X, Y, and A are as defined herein.
The compounds of the present invention are inhibitors of hematopoletic prostaglandin D synthase (H-PGDS) and can be useful in the treatment of Duchenne muscular dystrophy. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting H-PGDS activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
式 (I) 的化合物
其中 R1、R2、R3、R4、X、Y 和 A 如本文所定义。
本发明的化合物是血液前列腺素 D 合酶(H-PGDS)的抑制剂,可用于治疗杜氏肌营养不良症。因此,本发明进一步涉及包含本发明化合物的药物组合物。本发明还进一步涉及使用本发明化合物或包含本发明化合物的药物组合物抑制 H-PGDS 活性和治疗与之相关疾病的方法。
Aminolactone Chiral Modifiers for Heterogeneous Asymmetric Hydrogenation: Corrected Structure of Pantoyl-Naphthylethylamine, In-Situ Hydrogenolysis, and Scanning Tunneling Microscopy Observation of Supramolecular Aminolactone/Substrate Assemblies on Pt(111)
作者:Guillaume Goubert、Vincent Demers-Carpentier、Richard P. Loach、Raphaël Lafleur-Lambert、Jean-Christian Lemay、John Boukouvalas、Peter H. McBreen
DOI:10.1021/cs4007588
日期:2013.12.6
As established by Balker and co-workers, pantoylnaphthylethylamine (PNEA) is an efficient synthetic chiral modifier for the asymmetric hydrogenation of ketopantolactone (KPL) to pantolactone on supported Pt catalysts. We report a scanning tunneling microscopy (STM) study of PNEA and PNEA-derived aminolactone species on Pt(111) and a reassignment of the relative stereochemistry of the modifier. Robust organic chemistry methods were used to establish that the structure of PNEA is R,S rather than R,R. The dissociative chemisorption of a fraction of PNEA adsorbed on Pt(111) yields two fragments that we attribute to a process involving C-N bond scission. We show that C-N bond scission occurs under hydrogenation conditions on PNEA-modified Pt/Al2O3 catalysts, forming the aminolactone amino-4,4-dimethyldihydrofuran-2-one (AF). STM measurements on (S)-AF and 2,2,2-trifluoroacetophenone coadsorbed on Pt(111) show the formation of isolated 1:1 complexes. In contrast, measurements on coadsorbed (S)-AF and KPL show fluxional supramolecular AF/KPL assemblies. The possibility that such assemblies contribute to the overall enantioselectivity observed for PNEA-modified Pt catalysts is discussed.