Synthesis of novel quinazoline-based antifolates with modified glutamate side chains as potential inhibitors of thymidylate synthase and antitumour agents
作者:Vassilios Bavetsias、Graham M.F. Bisset、Rosemary Kimbell、F.Thomas Boyle、Ann L. Jackman
DOI:10.1016/s0040-4020(97)00851-x
日期:1997.9
7-dimethyl-4-oxo-6-quinazolinyl)-methyl]-N-prop-2-ynylamino]-2-fluorobenzoic acid (24), and finally removal of the protecting groups. The resulting quinazoline-based antifolates with modified glutamate side chains, and in particular, the tetrazole derivatives 26 and 29 displayed potent TS and L1210 cell growth inhibitory activities (e.g., for 26: TS IC50 = 2.4 nM, L1210 IC50 = 1.3 μM).
合成了几种新型的抗叶酸剂,它们是2-脱氨基-2-甲基-N 10-炔丙基-5,8-二氮杂壬酸的衍生物,作为胸苷酸合酶(TS)的抑制剂和抗肿瘤剂。这是通过首先开发通往关键中间体Glu-Ome-γ-ψ[CSNH] Glu(OEt)-OEt(8),Glu-OBu t -γ -ψ[CH 2 NH] Glu(OBu t)-的途径来完成的将OBu t(16),Glu-OMe-γ-ψ[CN 4 ] Gly-OMe(23)及其2,5-二取代的区域异构体(22),然后将DEPC偶联至4- [ N- [3,4-二氢-2-甲基-4-氧代-6-喹唑啉基)-甲基] -N-丙-2-炔基氨基]苯甲酸(9)或4- [ N -[(3,4-二氢-2,7-二甲基-4-氧代-6-喹唑啉基)-甲基] -N-丙-2-炔基氨基] -2-氟苯甲酸(24),最后除去保护基。所得的具有修饰的谷氨酸侧链的基于喹唑啉的抗叶酸剂,尤其是四唑衍生物2