Divergent Synthesis of Aeruginosins Based on a C(sp<sup>3</sup>)H Activation Strategy
作者:David Dailler、Grégory Danoun、Benjamin Ourri、Olivier Baudoin
DOI:10.1002/chem.201501370
日期:2015.6.22
A general and scalable access to the aeruginosin family of marine natural products, exhibiting potent inhibitory activity against serine proteases, is reported. This was enabled by the strategic use of two recently implemented Pd‐catalyzed C(sp3)H activation reactions. The first method allowed us to obtain the common 2‐carboxy‐6‐hydroxyoctahydroindole (Choi) core of the target molecules on a large
据报道,具有对丝氨酸蛋白酶的强抑制活性的海洋天然产品铜绿素家族普遍可扩展。这是通过战略性地利用两个最近实施的钯催化C(SP启用3)H活化反应。第一种方法使我们能够大规模获得目标分子的常见2-羧基-6-羟基八氢吲哚(Choi)核,而第二种方法则提供了快速多样的途径进入各种羟基苯基乳酸(Hpla)亚基,包括卤代亚基。这种独特的策略,加上片段偶联序列的优化,使得可以从手性库中合成出四种铜绿素酶,即98A–C和298A。其中,铜绿菌素298A以前所未有的大规模合成。此外,由于最终氢化步骤的微调,卤代铜绿蛋白酶98A和98C首次被合成。