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Convergent approach for commercial synthesis of gefitinib and erlotinib

机译:商业合成吉非替尼和厄洛替尼的融合方法

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摘要

An efficient, economical and large-scale convergent synthesis of epidermal growth factor receptor- tyrosine kinase inhibitors gelitinib (1, Iressa) and erlotinib (2, Tarceva) approved by U.S. FDA for the treatment of non-small-cell lung cancer is described. The formation of 4-anilinoquinazolines are achieved in a simple one-pot reaction of suitable formamidine intermediates and substituted anilines involving Dimroth rearrangement, thereby avoiding the need to make quinazolin-4(3H)-one intermediates, which require a large experimental inputs. Using this process, we have produced drug candidates I with overall yield of 66% from 4-methoxy-5-[3-(4-morpholinyl) propoxy]-2-nitrobenzonitrile (3) and 2 with 63% from 4,5-bis(2-methoxyethoxy)-2-nitrobenzonitrfle (6) on a multigram scale.
机译:描述了一种经表皮生长因子受体-酪氨酸激酶抑制剂gelitinib(1,Iressa)和erlotinib(2,Tarceva)的有效,经济和大规模的合成方法,该合成物已获得美国FDA批准用于治疗非小细胞肺癌。通过合适的甲am中间体和取代的苯胺的简单的一锅反应(包括Dimroth重排)可以实现4-苯胺基喹唑啉的形成,从而避免了需要大量实验投入的喹唑啉4(3H)-中间体的制备。使用该方法,我们从4-甲氧基-5- [3-(4-(吗啉基)丙氧基] -2-硝基苄腈(3)制备了总收率为66%的候选药物I,从4,5-获得了63%的总收率为2以克为单位的双(2-甲氧基乙氧基)-2-硝基苯甲腈(6)。

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