在此,我们提出了一种简便的四步合成方法,用于合成新型2-芳基取代的7,8-二氢喹啉-6(5 H )-酮作为细胞毒剂。关键步骤是使用苯乙酮衍生的曼尼希盐作为迈克尔受体,与环己烷-1,4-二酮单乙烯缩醛反应,得到1,5-二羰基化合物,用乙酸铵处理,得到7,8-二羰基化合物。二氢喹啉-6(5 H )-酮。针对七种细胞系评估了合成化合物的细胞毒活性。观察数据显示对慢性粒细胞白血病株K-562具有良好的选择性。该合成路线简单,适用于各种含官能团的底物。这些类型的化合物可用作癌症研究和药物发现中的先导化合物。
作者:Fredrik Lehmann、Erika A. Currier、Roger Olsson、Uli Hacksell、Kristina Luthman
DOI:10.1016/j.bmc.2005.01.056
日期:2005.4
A series of analogues of the selective non-peptide urotensin II (UII) receptor agonist 3-(4-chlorophenyl)-3-(2-dimethylaminoethyl)-isochroman- 1-one (AC-7954, 1) was synthesized and evaluated for UII agonist activity using a functional cell-based assay. The introduction of a methyl group in the 4-position resulted in a complete loss of activity, whereas substituents in the aromatic rings were beneficial. Sterically demanding amino groups were also detrimental to the activity. Several potent agonists were identified, six compounds being equally or more potent than 1. The most potent compound in the series was the 6,7-dimethyl analogue of 1 (16, pEC(50) 6.87). The racemate of 16 was resolved into the pure enantiomers using preparative straight phase HPLC. It was shown that the potency resides in the (+)-enantiomer (pEC(50) 7.11). The synthesized compounds seem to be selective for the UII receptor as no activities were observed at the closely related SSTR3 and 5 receptors. (c) 2005 Elsevier Ltd. All rights reserved.
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