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