榄香烯衍生物的合成及抗癌活性研究
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摘要
本文简述了榄香烯及其衍生物的研究进展,并在前期研究基础上,以β-榄香烯为先导化合物合成了四类16个β-榄香烯氨基酸衍生物,其中有6个为β-榄香烯氨基酸甲酯类衍生物,3个为β-榄香烯氨基酸类衍生物,6个为氨基酸-(β-榄香烯-13-基)酯类化合物,1个为氨基酸-(1-氯-2-氢-β-榄香烯-13-基)酯类化合物。所合成的化合物均为未见文献报道,经~1H-NMR、IR和MS等波谱分析确证结构。
     优化了合成路线中脱羧基保护基和脱氨基保护基反应的反应条件,并总结了目标化合物的图谱特征。
     用SRB法测定了16个目标化合物对体外培养的三种人癌细胞Hela、SGC-7901和HL-60的增殖抑制作用。结果显示其中14个化合物对三种细胞或其中某一种细胞表现出较β-榄香烯强的增殖抑制作用。N-(β-榄香烯-13-基)色氨酸(Z-7)对上述三种细胞的抑制作用最强,IC_(50)值分别为13.8μmol/L,8.2μmol/L和11.7gmol/L。N-(β-榄香烯-13-基)谷氨酸-1-甲酯(Z-6)和色氨酸-(β-榄香烯-13-基)酯(Z-10)具有一定的选择性抑制作用—前者对Hela细胞和HL-60细胞的IC_(50)值差别较大,分别为12.7gmol/L和81.8μmol/L:后者对HL-60细胞的作用较差,IC_(50)值50.0μmol/L,对SGC-7901和Hela细胞的抑制作用较强,IC_(50)值分别为17.4μmol/L和13.8μmol/L。
     初步研究结果显示本论文所合成的β-榄香烯衍生物有较好的抗癌活性,值得进一步的研究。
The development of elemene andβ-elemene derivatives were introduced briefly. Based on the analysis of the structural characteristics ofβ-elemene, sixteen new derivatives containing amino acid moiety were synthesized fromβ-elemene. Among them, 6 compounds were N-(β-elemene-13-yl)amino acid methyl ester, 3 compounds were N-(β-elemene-13-yl)amino acid, 6 derivatives were amino acidβ-elemene-13-yl ester and 1 compound was Methioninel-chloro-2-H-yl-β-ele-mene-13-yl ester. The structures of the target compounds were confirmed by MS, ~1H-NMR and IR spectra.Effects of reaction condition on hydrolysis of N-(β-elemene-13 -yl)amino acid ester and the selective removal of the N-BOC protecting group were studied in detail.Theseβ-elemene derivatives were tested for their anti-tumor inhibitory activity in vitro against HL-60, SGC-7901 and Hela cells derived from human beings by SRB method. Fourteen compounds showed more potent antiproliferative activity thanβ-elemene. N-(β-elemene-13-yl)Tryptophan (Z-7) showed significant inhibition against the three tumor cells, while N-(β-elemene-13-yl)Glutamic acid 1-methyl ester (Z-6) andβ-elemene-13-yl Tryptophan ester (Z-10) showed notable selectivity.The results revealed thatβ-elemene derivatives containing amino acid moiety were potent anti-tumor agents and worthy of further study.
引文
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