Inhibition of Glutamate Carboxypeptidase by Phosphoryl and Thiophosphoryl Derivatives of Glutamic and 2-Hydroxyglutaric Acid
摘要:
Representative phosphoryl and thiophosphoryl derivatives of (S)glutamic or (S)-2-hydroxyglutaric acid were synthesized and evaluated for their inhibitory potency against the glutamate carboxypeptidase, carboxypeptidase G (CPG). It was observed that the inhibition of CPG was highly sensitive to the individual phosphorus ligands. The most potent inhibitors were the dibasic phosphoryl and thiophosphoryl derivatives of glutamic acid and the monobasic thiophosporyl derivatives of 2-hydroxyglutaric acid.
Combination strategy using pure enzymes and whole cells as biocatalysts for the preparation of 2-hydroxyesters and lactones from 2-oxoglutaric acid
摘要:
An innovative combination strategy that uses pure enzymes and whole microbial cells in the same process was used to prepare enantionterically pure 3-carboxyalkyl-gamma-butyrolactones and several alkyl esters of 2-hydroxyglutarates from 2-oxoglutaric acid. The method involves two consecutive biocatalytic steps. The first step, which converts the 2-oxoglutaric acid into the corresponding dialkyl esters, was catalyzed by a lipase. Then in the second step, by microbial reduction of the dialkyl-2-oxoglutarates, it is possible to obtain 3-carboxyalkyl-gamma-butyrolactones or 2-hydroxyesters depending on the length of the chain in the alkyl moiety of the esters and on the fresh or lyophilized status of the cells. (C) 2004 Elsevier Ltd. All rights reserved.
Transfer hydrogenation of activated ketones using novel chiral Ru(II)-N-arenesulfonyl-1,2-diphenylethylenediamine complexes
作者:Damjan Šterk、Massoud S. Stephan、Barbara Mohar
DOI:10.1016/j.tetlet.2003.10.201
日期:2004.1
A series of α-keto esters and α,α,α-trifluoromethyl ketones were reduced in high yields and excellent enantioselectivities under Ru-catalysed transferhydrogenationusingnovel chiral N-arenesulfonyl-1,2-diphenylethylenediamine ligands.
A Convergent Enantioselective Synthesis of the Anti-Malarial Agent (+)-Febrifugine
作者:Vittorio Caprio、Amir Ashoorzadeh
DOI:10.1055/s-2004-837199
日期:——
Chiral pool derived 3-benzyloxy-3,4,5,6-tetrahydropyridine N-oxide underwent regio- and diastereoselective 1,3-dipolar cycloaddition with N-allylquinazolone to give a cycloadduct that was elaborated to (+)-febrifugine a potent anti-malarial alkaloid.
Stereocontrolled Total Synthesis of the Potent Anti-inflammatory and Pro-resolving Lipid Mediator Resolvin D3 and Its Aspirin-Triggered 17<i>R</i>-Epimer
作者:Jeremy W. Winkler、Jasim Uddin、Charles N. Serhan、Nicos A. Petasis
DOI:10.1021/ol400484u
日期:2013.4.5
The first totalsynthesis of stereochemically pure resolvin D3 and aspirin-triggered resolvin D3 is reported. These enzymatic metabolites of docosahexaenoic acid (DHA) have potent anti-inflammatory and pro-resolving actions. The convergent synthetic strategy is based on enantiomerically pure starting materials, and it is highly stereocontrolled.
Synthesis of the C1C16 fragment of the marine toxin, laulimalide
作者:Atsushi Shimizu、Shigeru Nishiyama
DOI:10.1016/s0040-4039(97)01336-1
日期:1997.8
The synthesis of the C1C16 fragment of laulimalide 1, isolated from an Indonesian sponge, is described. The key step in the synthesis of this fragment involves an asymmetric induction by the Evans chiral oxazolidinone protocol.
Flexible Cyclic Ethers/Polyethers as Novel P2-Ligands for HIV-1 Protease Inhibitors: Design, Synthesis, Biological Evaluation, and Protein−Ligand X-ray Studies
作者:Arun K. Ghosh、Sandra Gemma、Abigail Baldridge、Yuan-Fang Wang、Andrey Yu. Kovalevsky、Yashiro Koh、Irene T. Weber、Hiroaki Mitsuya
DOI:10.1021/jm8004543
日期:2008.10.9
biological evaluation of a series of novel HIV-1proteaseinhibitors. The inhibitors incorporate stereochemically defined flexible cyclic ethers/polyethers as high affinity P2-ligands. Inhibitors containing small ring 1,3-dioxacycloalkanes have shown potent enzyme inhibitory and antiviral activity. Inhibitors 3d and 3h are the most active inhibitors. Inhibitor 3d maintains excellent potency against a
我们报告了一系列新型 HIV-1 蛋白酶抑制剂的设计、合成和生物学评估。抑制剂包含立体化学定义的柔性环醚/聚醚作为高亲和力 P2 配体。含有小环 1,3-二氧杂环烷烃的抑制剂已显示出有效的酶抑制和抗病毒活性。抑制剂 3d 和 3h 是活性最强的抑制剂。Inhibitor 3d 对多种多重 PI 抗性临床菌株保持出色的效力。我们的构效研究表明,环的大小、立体化学和氧的位置对观察到的活性很重要。已经描述了 1,3-dioxepan-5-ol 的光学活性合成以及各种环醚和聚醚配体的合成。确定了 3d 结合的 HIV-1 蛋白酶的蛋白质配体 X 射线晶体结构。该结构表明,P2-配体进行广泛的相互作用,包括与 S2 位点中的蛋白酶骨架形成氢键。此外,3d 中的 P2-配体与 Gly-48 的 NH 形成独特的水介导的相互作用。