高度对映选择性脂肪酶已广泛用于通过动力学或动态动力学拆分制备通用的对映纯手性仲醇。脂肪酶本质上是( R )-选择性的,很难获得( S )-选择性脂肪酶。VIII 族羧酸酯酶的最新晶体结构表明,其催化三联体的空间阵列是脂肪酶的镜像,但催化三联体不同于脂肪酶。因此,我们假设 VIII 族羧酸酯酶可能对类似于 ( S ) 的仲醇表现出( S )-对映选择性。)-选择性丝氨酸蛋白酶,其催化三联体也在空间上排列为它的镜像。在这项研究中,制备了一种已知家族 VIII 羧酸酯酶(pdb 代码:4IVK)的同源酶(来自变形杆菌SG_bin9 的羧酸酯酶,PBE),该酶不仅对3-丁炔等仲醇具有中等的 ( S )-选择性。-2-醇和1-苯乙醇以及( R )-对所探索的底物中特定仲醇的选择性。此外,(S)-PBE 的选择性已通过基于分子模型的合理重新设计显着提高。分子模型确定了一个由 Ser381、Ala383
Enantioselective transesterification catalysis by nanosized serine protease subtilisin Carlsberg particles in tetrahydrofuran
摘要:
Enzyme catalysis in organic solvents is a powerful tool for stereo-selective synthesis but the enantioselectivity is still hard to pi edict To overcome this obstacle. we employed a nanoparticulate formulation of subtilisin Carlsberg (SC) and designed a series of 14 structurally related racemic alcohols They were employed in the model transesterification reaction with vinyl butyrate and the enantioselectivities were determined. In general. short alcohol side chains led to low enantioselectivties, while larger and bulky side chains caused better discrimination of the enantiomers by the enzyme With several bulky substrates high enantioselectivities with E>100 were obtained Computational modeling highlighted that key to high enantioselectivity is the discrimination of the R and S substrates by the sole hydrophobic binding pocket based on their size and bulkiness While bulky S enantiomer side chains could be accommodated within the binding pocket, bulky R enantiomer side chains could not However, when also the S enantiomer side chain becomes too large and does not fit into the binding pocket anymore. enantioselectivity accordingly drops (C) 2010 Elsevier Ltd All rights reserved
Diaryldiazepine Prodrugs for the Treatment of Neurological and Psychological Disorders
申请人:Remenar Julius F.
公开号:US20110166128A1
公开(公告)日:2011-07-07
The present invention provides prodrug compounds of diaryldiazepine drug compounds.
本发明提供了二苯并二氮杂苯类药物化合物的前药化合物。
PRODRUGS OF FUSED HETEROCYCLIC INHIBITORS OF D-AMINO ACID OXIDASE
申请人:Heffernan Michele L. R.
公开号:US20110034434A1
公开(公告)日:2011-02-10
The invention relates to prodrugs of fused heterocyclic inhibitors of D-amino oxidase (DAAO) and methods of treating diseases and conditions, wherein modulation of D-amino acid oxidase activity, D-serine levels, D-serine oxidative products and NMDA receptor activity in the nervous system of a mammalian subject is effective.
The present invention relates to prodrugs of parent drug compounds containing heteroaromatic NH groups.
本发明涉及含有杂芳基NH基团的母药化合物的前药。
PROCESS FOR SYNTHESIZING OXIDIZED LACTAM COMPOUNDS
申请人:Remenar Julius F.
公开号:US20110275803A1
公开(公告)日:2011-11-10
The invention provides a method for the synthesis of dehydrogenated lactam drugs of Formula I:
本发明提供了一种合成式I去氢内酰胺类药物的方法:
Prodrugs for the Treatment of Schizophrenia and Bipolar Disease
申请人:Blumberg Laura Cook
公开号:US20110166156A1
公开(公告)日:2011-07-07
Compounds of Formula I and Formula II and their use for the treatment of neurological and psychiatric disorders including schizophrenia and manic or mixed episodes associated with bipolar I disorder with or without psychotic features is disclosed.