N-(4-Benzothiazol-2-yl-2-chloro-phenyl)-acetamide

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-(4-Benzothiazol-2-yl-2-chloro-phenyl)-acetamide
• 英文别名: N-[4-(1,3-benzothiazol-2-yl)-2-chlorophenyl]acetamide
• 化学式: C₁₅H₁₁ClN₂OS
• 分子量: 302.784
• InChiKey: XYUDZDRRFABYLW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  70.2
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  4-(2-苯并噻唑基)苯胺 在 吡啶 、 一氯化碘 、 溶剂黄146 、 copper(l) chloride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 0.5h， 生成 N-(4-Benzothiazol-2-yl-2-chloro-phenyl)-acetamide
  参考文献：
  名称：

  Antitumor Benzothiazoles. 7. Synthesis of 2-(4-Acylaminophenyl)benzothiazoles and Investigations into the Role of Acetylation in the Antitumor Activities of the Parent Amines

  摘要：

  2-(4-Aminophenyl)benzothiazoles display potent and selective antitumor activity against inter alia breast, ovarian, colon, and renal cell lines, but their mechanism of action, though yet to be defined, may be novel. Metabolism is suspected to play a central role in the mode of action of these benzothiazoles since drug uptake and biotransformation were observed in sensitive cell lines (e.g., breast MCF-7 and MDA 468 cells) in vitro, whereas insensitive cell lines (e.g., prostate PC 3 cells) showed negligible uptake and biotransformation. N-Acyl derivatives of the arylamines have been synthesized, and in vitro studies confirm N-acetylation and oxidation as the main metabolic transformations of 2-(4-aminophenyl)benzothiazoles, with the predominant process being dictated by the nature of the 3'-substituent. The prototype amine 3 underwent mainly N-acetylation in vitro, while 3'-substituted analogues 4 and 5 were primarily oxidized. N-Acetylation of 4 to 11 exerts a drastic dyschemotherapeutic effect in vitro, but acetylation of the halogeno congeners 5-7 gave acetylamines 12-14 which substantially retain selective antitumor activity. In vivo pharmacokinetic studies in rats confirmed rapid and exclusive N-acetylation of the 3'-methyl analogue 4, but less acetylation with the 3'-chloro analogue 5. Distinct expression patterns of N-acetyltransferase NAT1 and NAT2 have been demonstrated in our panel of cell lines.

  DOI：

  10.1021/jm981076x

文献信息

• Antitumor Benzothiazoles. 8. Synthesis, Metabolic Formation, and Biological Properties of the <i>C</i>- and <i>N</i>-Oxidation Products of Antitumor 2-(4-Aminophenyl)benzothiazoles
  作者：Eiji Kashiyama、Ian Hutchinson、Mei-Sze Chua、Sherman F. Stinson、Lawrence R. Phillips、Gurmeet Kaur、Edward A. Sausville、Tracey D. Bradshaw、Andrew D. Westwell、Malcolm F. G. Stevens

  DOI：10.1021/jm990104o

  日期：1999.10.1

  2-(4-Aminophenyl)benzothiazoles 1 and their N-acetylated forms have been converted to C- and N-hydroxylated derivatives to investigate the role of metabolic oxidation in the mode of action of this series of compounds. 2-(4-Amino-3-methylphenyl)benzothiazole (1a, DF 203, NSC 674495) is a novel and potent antitumor agent with selective growth inhibitory properties against human cancer cell lines. Very low IC50 values (<0.1 mu M) were encountered in the most sensitive breast cancer cell lines, MCF-7 and T-47D, whereas renal cell line TK-10 was weakly inhibited by la. Cell lines from the same tissue origin, MDA-MB-435 (breast), CAKI-1 (renal), and A498 (renal), were insensitive to 1a. Accumulation and metabolism of la were observed in sensitive cell lines only, with the highest rate of metabolism occurring in the most sensitive MCF-7 and T-47D cells. Thus, differential uptake and metabolism of 1a by cancer cell lines may underlie its selective profile of anticancer activity. A major metabolite in these sensitive cell lines has been identified as 2-(4-amino-3-methylphenyl)-6-hydroxybenzothiazole (6c). Hydroxylation of 1a was not detected in the homogenate of previously untreated MCF-7, T-47D, and TK-10 cells but was readily observed in homogenates of sensitive cells that were pretreated with 1a. Accumulation and covalent binding of [C-14]1a derived radioactivity was observed in the sensitive MCF-7 cell line but not in the insensitive MDA-MB-435 cell line. The mechanism of growth inhibition by 1a, which is unknown, may be dependent on the differential metabolism of the drug to an activated form by sensitive cell Lines only and its covalent binding to an intracellular protein. However, the 6-hydroxy derivative 6c is not the 'active' metabolite since, like all other C- and N-hydroxylated benzothiazoles examined in this study, it is devoid of antitumor properties in vitro.