Design, Synthesis, and Study of 9-Substituted Ellipticine and 2-Methylellipticinium Analogs as Potential CNS-Selective Antitumor Agents
作者:Wayne K. Anderson、Ariamala Gopalsamy、Peech S. Reddy
DOI:10.1021/jm00039a007
日期:1994.6
9-(1,1-dimethylethox)ellipticine (3a, 4a, and 5a, respectively). Methylation of the O-alkylellipticines gave the corresponding N-methylpyridinium iodides (3b, 4b, and 5b). The iodides were converted to the acetates (3c, 4c, and 5c) by ion-exchange resin. Attempts to prepare 9-(2,2,2-trifluoroethoxy)ellipticine (6a) using the DMF acetal gave 10-(2,2,2-trifluoroethoxy)-9-hydroxyellipticine (8a). 9-(2
N,N-二甲基甲酰胺(DMF)二戊基乙缩醛介导的9-羟基玫瑰树碱的O-烷基化反应生成9-乙氧基-,9-(1-甲基乙氧基)-和9-(1,1-二甲基乙氧基)玫瑰树碱(3a,4a,和5a)。O-烷基玫瑰树碱的甲基化得到相应的N-甲基吡啶碘化物(3b,4b和5b)。通过离子交换树脂将碘化物转化为乙酸盐(3c,4c和5c)。尝试使用DMF乙缩醛制备9-(2,2,2-三氟乙氧基)玫瑰树碱(6a),得到10-(2,2,2-三氟乙氧基)-9-羟基玫瑰树碱(8a)。通过全合成制备9-(2,2,2-三氟乙氧基)-和9-苯氧基玫瑰树碱(分别为6a和7a)。评价玫瑰树碱和N-甲基椭圆肽衍生物对一组人类肿瘤的体外抗肿瘤活性。2-甲基-9-(1,1-二甲基乙氧基)乙酸锂(5c)没有活性,但所有其他化合物均显示出显着的抗肿瘤活性。玫瑰树碱没有明显的亚组特异性。然而,所测试的N-甲基椭圆肽化合物确实表现出对CNS肿瘤亚组的特异性。