作者:Mark W. Read、Michael L. Miller、Partha S. Ray
DOI:10.1016/s0040-4020(98)01060-6
日期:1999.1
prepared (via intramolecular 1,3-dipolar cycloaddition chemistry) as conformationally-restricted analogs of 6a. All three compounds were prepared as potential antitumor agents based on the known, structurally related, antitumor agent 5,10-dideaza-5,6,7,8-tetrahydrofolic acid (DDATHF). Both 7a and 8a were inactive in the human colon carcinoma (GC3c1) cell culture assay. Compound 6a, however, was weakly active
标题基于tetrahydropyrimidoazepine叶酸的合成(图6a)是使用由3- carboethoxy-产生的二烯醇之间的区域专一性γ-烷基化反应描述Ñ -2,4-二甲氧基苄基-1,5,6,7-四氢- (1个ħ)-氮杂-2--2-酮(33)和4-甲酰基苯甲酸甲酯是关键步骤。还通过分子内的1,3-偶极环加成化学方法制备了异恶唑啉并嘧啶氮杂ze庚因和异恶唑啉并嘧啶氮杂pine的叶酸(分别为7a和8a)作为构象受限的6a类似物。基于已知的,结构上相关的抗肿瘤药5,10-二叠氮基5,6,7,8-四氢叶酸(DDATHF),将所有三种化合物制备为潜在的抗肿瘤药。两个图7a和图8a是在人结肠癌(GC3c1)细胞培养测定中无活性。然而,在上述测定中,化合物6a具有弱活性(IC 50 = 2.0μM)。