Access to 3-spiroindolizines containing an isoindole ring through intra-molecular arylation of spiro-<i>N</i>-acyliminium species: a new family of potent farnesyltransferase inhibitors
作者:Anthony Pesquet、Hamid Marzag、Michael Knorr、Carsten Strohmann、Ata Martin Lawson、Alina Ghinet、Joëlle Dubois、Farce Amaury、Adam Daïch、Mohamed Othman
DOI:10.1039/c8ob02612b
日期:——
N-acyliminium precursors. The latter led, in addition to the spiro-6-membered aza-heterocycles, to the formation of scarce spiro-5-membered analogues which show promising inhibitory activities on human farnesyltransferase in the nanomolar range demonstrating improved IC50 values of up to 1.5 nM.
基于N-酰基亚胺类物种,已开发出两种有效且快速的方法来使由两个不同碳中心连接至异吲哚环的螺环系统多样化。首先选择了烯烃/甲酰-酰胺平衡的酰亚胺还原和串联氧化裂解作为这些策略的关键步骤。最终,取决于N-酰基亚胺前体的性质,分别通过路易斯酸或布朗斯台德酸通过α-乙酰氧基内酰胺或α-羟基内酰胺的芳基化来实现分子内α-酰胺基烷基化反应。除了螺六元的氮杂杂环外,后者导致形成稀有螺五元的类似物,这些类似物在纳摩尔范围内显示出对人法呢基转移酶的抑制作用,表明IC50值最高可提高到1.5 nM。