Stereospecific benzylic hydroxylation of bicyclic alkenes by Pseudomonas putida: isolation of (+)-R-1-hydroxy-1,2-dihydronaphthalene, an arene hydrate of naphthalene from metabolism of 1,2-dihydronaphthalene
作者:Derek R. Boyd、R. Austin S. McMordie、Narain D. Sharma、Howard Dalton、Paul Williams、Richard O. Jenkins
DOI:10.1039/c39890000339
日期:——
Metabolism of the bicyclic alkenes 1,2-dihydronaphthalene, indene, and 1,2-benzocyclohepta-1,3-diene by a mutant strain of Pseudomonasputidayields benzylic monols (exclusively with R configuration) as major metabolites and vicinal cis diols as minor products having an excess of the S configuration at the benzylic position.
Catalytic versatility of P450LaMO: A new redox‐self‐sufficient P450 of the CYP116B subfamily was discovered by data mining. A substrate spectrum study showed that it was a catalytic versatile monooxygenase, mediating oxidation reactions as diverse as hydroxylation, alkene epoxidation, O‐dealkyl‐ ation, sulfoxidation, and even hydration.
P450 La MO的催化多功能性:通过数据挖掘发现了一种新的氧化还原自足型CYP116B亚家族。底物光谱研究表明,它是一种催化型多功能单加氧酶,介导了各种氧化反应,包括羟基化,烯烃环氧化,O-脱烷基,硫氧化甚至水合。
New Synthesis of A-Ring Aromatic Strigolactone Analogues and Their Evaluation as Plant Hormones in Pea (<i>Pisum sativum</i>)
A new general access to A‐ring aromatic strigolactones, a new class of planthormones, has been developed. The key transformations include in sequence ring‐closing metathesis, enzymatic kinetic resolution and a radical cyclization with atom transfer to install the tricyclic ABC‐ring system. The activity as planthormones for the inhibition of shoot branching in pea of various analogues synthesized
A 环芳香独脚金内酯(一种新型植物激素)的新通用途径已经开发出来。关键的转化依次包括闭环复分解、酶动力学拆分和原子转移的自由基环化以安装三环 ABC 环系统。报道了通过该策略合成的各种类似物作为植物激素抑制豌豆芽分枝的活性。
Engineering P450<sub>LaMO</sub>stereospecificity and product selectivity for selective C–H oxidation of tetralin-like alkylbenzenes
in contrast to another mutant L97F/T121F/E282V/T283Y with complementary (R)-enantioselectivity (er 23 : 77). Moreover, the enantiopure (S)-alcohols formed by the P450LaMO-catalyzed oxidation of a series of alkylbenzenes are potentially important building blocks in the pharmaceutical industry. This Phe-based enantioselectivity engineering used for reshaping the active pocket of P450s could provide a