Chemoenzymatic Synthesis of a Chiral Ozanimod Key Intermediate Starting from Naphthalene as Cheap Petrochemical Feedstock
作者:Florian Uthoff、Jana Löwe、Christina Harms、Kai Donsbach、Harald Gröger
DOI:10.1021/acs.joc.8b03290
日期:2019.4.19
sclerosis. Addressing the goal of a scalable, economically attractive, and technically feasible process for the manufacture of this drug, a novel alternative synthetic approach toward (S)-4-cyano-1-aminoindane as a chiral key intermediate for ozanimod has been developed. The total synthesis of this intermediate is based on the utilization of naphthalene as a readily accessible, economically attractive
奥扎尼莫德(Ozanimod)代表一种新近开发的,有前途的活性药物成分(API)分子,可对抗多发性硬化症。这种药物,朝向一个新颖的替代合成方法中的用途寻址一个可扩展的目标,在经济上有吸引力的,并且在技术上可行的方法(小号)-4-氰基-1-氨基茚满作为唑尼莫德的手性关键中间体已得到开发。该中间体的总合成是基于萘的利用,萘是一种易于获得,经济上有吸引力的,因此是有利的石油化学原料。首先,通过最初的Birch还原,在四步过程中将萘转化为4-羧基茚满酮,然后进行C═C双键异构化,氧化C═C裂解和分子内Friedel-Crafts酰化反应。4-羧基茚满酮向(S)-4-氰基-1-氨基茚满代表了引入手性和所需的绝对S构型的关键步骤。当评估分别基于脂肪酶和转氨酶的互补生物催化方法时,将4-羧基茚满酮进行化学还原胺化,再进行随后的脂肪酶催化拆分,是最有效的途径,从而可实现所需的目标。关键中间体(S)-4-氰