Laccase-Mediated Synthesis of Novel Substituted Phenoxazine Chromophores Featuring Tuneable Water Solubility
作者:Frédéric Bruyneel、Olivier Payen、Antonio Rescigno、Bernard Tinant、Jacqueline Marchand-Brynaert
DOI:10.1002/chem.200900681
日期:2009.8.17
oxidative coupling reactions. Yet, laccases remain rarely described as biocatalysts in organic synthesis. This paper describes the chemical preparation of original sulfonated aminophenol substrates and their enzyme‐mediated dimerisation into phenoxazine chromophores that feature tuneable water solubility as a function of the sulfonyl substituent. The scope and limitations of the biocatalysed synthetic
漆酶是自然界中发现的蓝色铜氧化酶家族的成员。它们通常氧化各种各样的苯酚和苯胺衍生物,而苯酚和苯胺衍生物又参与氧化偶联反应。然而,漆酶仍然很少被描述为有机合成中的生物催化剂。本文描述了原始磺化氨基苯酚底物的化学制备及其酶介导的二聚作用,形成具有可调节的水溶性作为磺酰基取代基功能的苯恶嗪生色团。概述了生物催化合成方法的范围和局限性。收集动力学数据以评估理化参数的影响。通过NMR光谱分析评估了新型吩恶嗪染料(“头对头”或“头对尾”二聚体)的结构。X射线衍射分析了两种结晶化合物。事实证明,这种漆酶介导的合成(绿色化学过程)比化学氧化更有效。邻氨基苯酚与氧化银。