A practical synthesis of ethyl (R)- and (S)-2-hydroxy-4-phenylbutanoate and d-homophenylalanine ethyl ester hydrochloride from l-malic acid
摘要:
With the readily available L-malic acid as starting material. both enantiomers of ethyl 2-hydroxyl-4-phenylbutanoates and D-homophenylalanine ethyl ester hydrochloride were prepared conveniently in excellent optical purity and 64. 53 and 49% overall field. respectively. (C) 2001 Published by Elsevier Science Ltd.
COMPOUNDS AND COMPOSITIONS AS CHANNEL ACTIVATING PROTEASE INHIBITORS
申请人:Tully David C.
公开号:US20080176901A1
公开(公告)日:2008-07-24
The invention provides compounds and pharmaceutical compositions thereof, which are useful for modulating channel activating proteases, and methods for, using such compounds to treat, ameliorate or prevent a condition associated with a channel activating protease, including but not limited to prostasin, PRSS22, TMPRSS11 (e.g., TMPRSS11B, TMPRSS11E), TMPRSS2, TMPRSS3, TMPRSS4 (MTSP-2), matriptase (MTSP-1), CAP2, CAP3, trypsin, cathepsin A, or neutrophil elastase.
Tandem four-component reaction for efficient synthesis of dihydrothiophene with substituted amino acid ethyl esters
作者:Jing Sun、Yu Zhang、Chao-Guo Yan
DOI:10.1039/c8ra03605e
日期:——
The one-pot four-component reaction of aromatic aldehydes, malononitrile, 1,3-thiazolidinedione and ethyl glycinate hydrochloride in ethanol in the presence of triethylamine afforded trans-dihydrothiophene ureidoformamide derivatives in moderate to good yields. The other α-amino acid ethyl esters resulted in the corresponding diastereoisomeric dihydrothiophene derivatives with various molecular ratios
Compounds and Compositions as Channel Activating Protease Inhibitors
申请人:Tully C. David
公开号:US20070275906A1
公开(公告)日:2007-11-29
The invention provides compounds and pharmaceutical compositions thereof, which are useful for modulating channel activating proteases, and methods for, using such compounds to treat, ameliorate or prevent a condition associated with a channel activating protease, including but not limited to prostasin, PRSS22, TMPRSS11 (e.g., TMPRSS11B, TMPRSS11E), TMPRSS2, TMPRSS3, TMPRSS4 (MTSP-2), matriptase (MTSP-1), CAP2, CAP3, trypsin, cathepsin A, or neutrophil elastase.
Optically active mesogenic triphenylenedicarboxyimides: Effects of axially connected aromatic ring at the stereogenic center on liquid crystal and self-assembly properties
作者:Xue Xia、Cai-Li Zhao、Hong-Tian Xu、Wen-Hao Yu、Shi-Kai Xiang、Lai-Cai Li、Ke-Qing Zhao、Chun Feng、Bi-Qin Wang
DOI:10.1016/j.dyepig.2022.110114
日期:2022.3
an enantiotropic hexagonal columnarmesophase with high clearing temperatures up to 260 °C, which means that branching of the introduced stereocenter does not disrupt the columnar π−stacking of the TDI cores. Although all chiral TDIs in THF solution showed CD signal indicative of optical activity, chiral supramolecular structures were only observed in the columnarmesophase of three pairs of chiral TDIs
我们描述了一系列十个光学活性三苯二甲酰亚胺 (TDI) 衍生物的合成和自组装行为,其中一个立体中心连接到带有末端芳香环的酰亚胺氮上。所有 TDI 都显示出对映六方柱状中间相,具有高达 260 °C 的高透明温度,这意味着引入的立体中心的分支不会破坏 TDI 核心的柱状 π-堆叠。尽管 THF 溶液中的所有手性 TDI 都显示出指示光学活性的 CD 信号,但仅在三对手性 TDI (2、4和5 )的柱状中间相中观察到手性超分子结构)具有直接或靠近手性中心连接的一端苯基或萘基环。DFT计算表明,立体中心的轴向连接的芳环在堆叠时提供空间排斥,从而导致手性超分子结构的形成。此外,在乙酸乙酯和乙醇混合溶液中自组装的R-或S-5的SEM图像中同时观察到少量的单手螺旋带和成束的直带,表明立体中心的构型不是导致溶液中产生螺旋结构的唯一因素。
[EN] NEW SPIROCYCLOHEXANE DERIVATIVES, PHARMACEUTICAL COMPOSITIONS CONTAINING THEM AND THEIR USES AS ANTI-APOPTOTIC INHIBITORS<br/>[FR] NOUVEAUX DÉRIVÉS DE SPIROCYCLOHEXANE, COMPOSITIONS PHARMACEUTIQUES LES CONTENANT ET LEURS UTILISATIONS COMME INHIBITEURS ANTI-APOPTOTIQUES
申请人:SERVIER LAB
公开号:WO2024008941A1
公开(公告)日:2024-01-11
Compounds of Formula (I): wherein R1, R2, R3, R4and are as defined in the description. Medicaments.