Stereochemistry and Mechanism of a Microbial Phenylalanine Aminomutase
摘要:
The stereochemistry of a phenylalanine aminomutase (PAM) on the andrimid biosynthetic pathway in Pantoea agglomerans (Pa) is reported. PaPAM is a member of the 4-methylidene-1H-imidazol-5(4H)-one (MIO)-dependent family of catalysts and isomerizes (2S)-alpha-phenylalanine to (3S)-beta-phenylalanine, which is the enantiomer of the product made by the mechanistically similar aminomutase TcPAM from Taxus plants. The NH2 and pro-(3S) hydrogen groups at C-alpha and C-beta, respectively, of the substrate are removed and interchanged completely intramolecularly with inversion of configuration at the migration centers to form P-phenylalanine. This is a contrast to the retention of configuration mechanism followed by TcPAM.
描述了通过环境友好的 Pd/C-Al-D2O 催化系统对氨基酸和合成构件进行化学/区域选择性 HD 交换。由于同位素标记化合物在药物化学和结构生物学中的重要性,特别是它们作为改进的候选药物和生物探针的用途,因此有效和选择性的氘代方法引起了人们的极大兴趣。该方法基于选择性 HD 交换反应,其中氘源是简单的 D2O。D2 气体是由铝和 D2O 的反应原位产生的,而市售的钯催化剂则有助于 HD 交换反应。高选择性和效率,以及程序的简单性和安全性使该方法成为当前替代方法的环境友好型替代方法。
A facile and efficient deuteration method of phenylalanine derivatives using a Pd/C-H2-D2O system has been developed. Selective deuteration at the β-position of phenylalanine derivatives occurred using Pd/C as a catalyst with high deuterium efficiency without racemization at 110 °C. Also, the α-position was deuterated at higher temperature.
开发了一种简单高效的苯丙氨酸衍生物的氘化方法,采用 Pd/C-H2-D2O 系统。在 110 °C 条件下,使用 Pd/C 作为催化剂,苯丙氨酸衍生物的β位选择性氘化发生,且氘效率高,未出现消旋化。此外,在更高温度下,α位也进行了氘化。
[EN] CHEMICAL COMPOUNDS<br/>[FR] COMPOSÉS CHIMIQUES
申请人:GLAXOSMITHKLINE LLC
公开号:WO2011017395A1
公开(公告)日:2011-02-10
The present invention relates to highly functionalized 1,3-diamino-propan-2-ols and pharmaceutically acceptable salts thereof. More specifically, the invention relates to highly functionalized 1,3-diamino-propan-2-ols that are derivatives of the HIV protease inhibitors darunavir.
Site-Selective Deuteration of Amino Acids through Dual-Protein Catalysis
作者:Tyler J. Doyon、Andrew R. Buller
DOI:10.1021/jacs.2c00608
日期:2022.4.27
their utility in drug development, for facilitating nuclearmagneticresonance (NMR) analysis, and as probes for enzyme mechanism. Small molecule-based methods for the site-selective synthesis of deuterated amino acids typically involve de novo synthesis of the compound from deuterated precursors. In comparison, enzymatic methods for introducing deuterium offer improved efficiency, operating directly on
Water-soluble NHC Pd/Ni bimetallic nanoparticles for H/D exchange in aromatic amino-acids
作者:Oscar Suárez-Riaño、Gabriel Mencia、Simon Tricard、Jerome Esvan、Pier-Francesco Fazzini、Bruno Chaudret、Edwin A. Baquero
DOI:10.1039/d2cc06019a
日期:——
We demonstrate selective and enantiospecific isotopic H/D exchange in aromatic amino acids without ring reduction catalyzed by well-defined water-soluble NHC-stabilized bimetallic PdNi nanoparticles.