高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (7): 1331.

• 研究简报 • 上一篇    下一篇

铁卟啉与氟尿嘧啶轴向配位热力学性质研究

延玺1, 郑泽宝1, 吴福丽1, 鲁礼林1, 朱文祥1, 张守芳2   

  1. 1. 北京师范大学化学系, 北京 100875;
    2. 沈阳药科大学制药工程学院, 沈阳 110016
  • 收稿日期:2003-06-25 出版日期:2004-07-24 发布日期:2004-07-24
  • 通讯作者: 延 玺(1962年出生),男,博士,副教授,主要从事药物配位化学研究.E-mail:yanxi@bnu.edu.cn E-mail:yanxi@bnu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20271008);北京市重点学科基金资助

Thermodynamics Properties of Axial Coordination Reaction of Fluorouracilum and Iron Porphyrin

YAN Xi1, ZHENG Ze-Bao1, WU Fu-Li1, LU Li-Lin1, ZHU Wen-Xiang1, ZHANG Shou-Fang2   

  1. 1. Department of Chemistry, Beijing Normal University, Beijing 100875, China;
    2. School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
  • Received:2003-06-25 Online:2004-07-24 Published:2004-07-24

摘要: 氟尿嘧啶(Fu)是一种常用的抗代谢药物,在体内可转变为脱氧尿嘧啶核苷酸,抑制胸腺嘧啶核苷酸合成酶,从而阻止尿嘧啶脱氧核苷酸转变成胸腺嘧啶脱氧核苷酸,它的结构与肿瘤细胞所必需的尿嘧啶相类似,在同一系统酶中互相竞争,阻断代谢环节,影响DNA的生物合成,从而抑制了肿瘤细胞的生长.它对多种癌症都有较好的疗效,但具有一定的毒副作用[1].这些毒副作用产生的机理目前尚不清楚.卟啉类化合物是人体中不可缺少的物质,具有许多特殊的生物效应[2~11].若它们的含量异常,则会引发多种病变.

关键词: 卟啉, 平衡常数, 氟尿嘧啶, 热力学

Abstract: To discover the mechanism of side-effect brought on fluorouracilum for human, FeTPP was prepared for simulating the character of haemachrome. Equilibrium constants β, ΔrH0-m and ΔrS0-m in the axial coordination reaction between FeTPP and fluorouracilum were evaluated by means of spectral absorption. The structure of the complex was optimized by MM+ molecular mechanics method. We found that fluorouracilum can react with FeTPP and form octahedron complex with two axial ligands. The viewpoint that fluorouracilum can damage biological function of metal porphyrin and bring about the medication sickness for human was proposed.

Key words: Porphyrin, Equilibrium constants, Fluorouracilum, Thermodynamics

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