2-(3,4-bis(3,4-dimethoxyphenyl)-2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: 2-(3,4-bis(3,4-dimethoxyphenyl)-2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid
• 英文别名: 2-[3,4-Bis(3,4-dimethoxyphenyl)-2,5-dioxopyrrol-1-yl]acetic acid；2-[3,4-bis(3,4-dimethoxyphenyl)-2,5-dioxopyrrol-1-yl]acetic acid
• 化学式: C₂₂H₂₁NO₈
• 分子量: 427.411
• InChiKey: HKHKCCXAMZNYHN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.09
• 重原子数：
  31.0
• 可旋转键数：
  8.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  111.6
• 氢给体数：
  1.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  6-氨基四氯苯酞 、 2-(3,4-bis(3,4-dimethoxyphenyl)-2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid 在 4-二甲氨基吡啶 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 以69%的产率得到2-(3,4-bis(3,4-dimethoxyphenyl)-2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-(3-oxo-1,3-dihydroisobenzofuran-5-yl)acetamide
  参考文献：
  名称：

  Optimization of permethyl ningalin B analogs as P-glycoprotein inhibitors

  摘要：

  In the present study, a total of 9 novel permethyl ningalin B analogs have been synthesized and evaluated for their P-gp modulating activity in a P-gp overexpressed breast cancer cell line LCC6MDR. Among these derivatives, compound 12 with dimethoxy groups at rings A and B and tri-substitution at ring C with ortho-methoxyethylmorpholine, meta-bromo and para-benzyloxy groups displays the most potent P-gp modulating activity with EC50 of 423 nM to reverse paclitaxel resistance. It is non-toxic towards L929 fibroblast with IC50 greater than 100 mu M and with selective index greater than 236. Its mechanism to reverse P-gp mediated drug resistance is by virtue of inhibiting transport activity of P-gp, restoring intracellular drug accumulation and eventually chemosensitizing the cancer cells to anticancer drug again. Moreover, compound 12 showed better solubility (405 ng/mL) than hit compound 1 in phosphate buffer (pH 4.0). In summary, our study demonstrates that permethyl ningalin B derivative 12 is non-toxic and efficient P-gp inhibitor that is a potential candidate to be used clinically to reverse P-gp mediated cancer drug resistance. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2015.07.027
• 作为产物：
  描述：

  (3,4-dimethoxy-phenyl)-acetic acid-(3,4-dimethoxy-phenacylamide) 在 potassium tert-butylate 、 sodium hydride 、 potassium carbonate 、 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 叔丁醇 为溶剂， 反应 60.0h， 生成 2-(3,4-bis(3,4-dimethoxyphenyl)-2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid
  参考文献：
  名称：

  Structure–Activity Relationship Study of Permethyl Ningalin B Analogues as P-Glycoprotein Chemosensitizers

  摘要：

  A novel series of permethyl ningalin B analogues were synthesized and evaluated for their P-glycoprotein (P-gp)-modulating activities in a P-gp-overexpressing breast cancer cell line (LCC6MDR). Compounds 35 and 37, which possess one methoxy group and one benzyloxy group at aryl ring C, displayed the most potent Pgp-modulating activity. A 1 pM concentration of 35 and 37 resensitized LCC6MDR cells toward paclitaxel by 42.7-fold, with respective EC50 values of 93.5 and 110.0 nM. Their mechanism of P-gp modulation is associated with an increase in intracellular drug accumulation. Their advantages also include low cytotoxicity (IC50 for L929 fibroblast >100 mu M) and high therapeutic indexes (>909 after normalization with their EC50 values). 35 is not a substrate of P-gp. They are potentially dual-selective modulators for both P-gp and breast cancer resistance protein transporters. The present study demonstrates that these new compounds can be employed as effective and safe modulators of Pgp-mediated drug resistance in cancer cells.

  DOI：

  10.1021/jm400930e