Sparsomycin analogs. IV. Synthesis and antitumor activity of pyrimidine-5-carboxamides and(E)-.BETA.-(pyrimidin-5-yl)-acrylamides.
作者:SHOICHI KANATOMO、AKIMORI WADA、MASAKATSU YOMEI、TETSUKO HASE、SOTOO NAGAI、SHIZUO FUKUDA、MOTOHIRO TANAKA、TAKUMA SASAKI
DOI:10.1248/cpb.36.2042
日期:——
Various pyrimidine-5-carboxamides (14, 16, 18, 20, and 21) and (E)-β-(pyrimidin-5-yl)acrylamides (15, 17, 19, and 22)were synthesized as sparsomycin analogs, and their antitumor activity was examined by cell growth inhibition assay against mouse leukemia L5178Y cells in vitro.Synthesis was carried out by condensation of appropriate acids (4, 6, 10, and 12) and amino acid methyl esters (13) by the mixed anhydride method using isobutyl chlorocarbonate. The condensation product was converted to the corresponding acid and alcohol derivatives by hydrolysis and LiBH4 reduction. The compounds having an ethylene linkage at the C-5 position and an ester moiety at the terminal amino acid functionality (15b, and 17b-g) exhibited remarkable antitumor activity.
多种吡啶-5-甲酰胺(14、16、18、20 和 21)以及(E)-β-(吡啶-5-基)丙烯酰胺(15、17、19 和 22)作为 sparsomycin 类似物被合成,并通过体外细胞生长抑制试验检测其对小鼠白血病 L5178Y 细胞的抗肿瘤活性。合成方法是使用异丁基氯甲酸酯通过混合酐法将适当的酸(4、6、10 和 12)和氨基酸甲酯(13)缩合。通过水解和 LiBH4 还原,将缩合产物转化为相应的酸和醇衍生物。在 C-5 位带有乙烯键合且末端氨基酸功能团为酯的化合物(15b 和 17b-g)显示出显著的抗肿瘤活性。