Cytotoxic esterified diterpenoid alkaloid derivatives with increased selectivity against a drug-resistant cancer cell line.

Cytotoxic esterified diterpenoid alkaloid derivatives with increased selectivity against a drug-resistant cancer cell line.
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对药物耐药性癌细胞系的选择性提高,细胞毒性酯化的二萜生物碱衍生物具有提高。

DOI:
10.1016/j.bmcl.2011.11.026
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发表时间:
2012-01-01
影响因子:
2.7
通讯作者:
Lee, Kuo-Hsiung
Lee, Kuo-Hsiung
中科院分区:
医学4区
文献类型:
--
作者:
Wada, Koji;Ohkoshi, Emika;Morris-Natschke, Susan L.;Bastow, Kenneth F.;Lee, Kuo-Hsiung

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灯盏花素(1)的C-6酯化反应得到20个新的二萜生物碱衍生物(4-22,24)。三种天然生物碱(1-3)和所有合成的化合物(4-25)对肺癌(A549)、前列腺癌(DU145)、鼻咽癌(KB)和长春新碱耐药(KB-VIN)癌细胞株的细胞毒活性进行了评估,有趣的是,与紫杉醇相比,它们的耐药性有所改善。特别是,6-(4-氟-3-甲基苯甲酰基)榄香碱(22)对KB-VIN细胞的杀伤活性是亲代非耐药KB细胞的2.6倍。1的6-酰化似乎是产生这类生物碱的细胞毒活性的关键,也是为进一步开发抗肿瘤药物提供有希望的新线索的一种手段。
C-6 Esterifications of delpheline (1) were carried out to provide 20 new diterpenoid alkaloid derivatives (4–22, 24). Three natural alkaloids (1–3) and all synthesized compounds (4–25) were evaluated for cytotoxic activity against lung (A549), prostate (DU145), nasopharyngeal (KB), and vincristine-resistant nasopharyngeal (KB-VIN) cancer cell lines and interestingly, showed an improved drug resistance profile compared to paclitaxel. Particularly, 6-(4-fluoro-3-methylbenzoyl)delpheline (22) displayed 2.6-fold greater potency against KB-VIN cells compared with the parental non-drug resistant KB cells. 6-Acylation of 1 appears to be critical for producing cytotoxic activity in this alkaloid class and a means to provide promising new leads for further development into antitumor agents.
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