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林产化学与工业 ›› 2009, Vol. 29 ›› Issue (1): 87-90.

• 研究报告 • 上一篇    下一篇

桦木醇戊二酸酯的合成及溶解性能分析

吕坤, 田水清, 方桂珍   

  1. 东北林业大学 生物质材料科学与技术教育部重点实验室, 黑龙江 哈尔滨 150040
  • 收稿日期:2008-07-29 修回日期:1900-01-01 出版日期:2009-02-28 发布日期:2009-02-28
  • 通讯作者: 方桂珍,博士生导师,主要从事木材化学和精细化学品研究;E-mail:fanggz@public.hr.hl.cn。

Synthesis of 3,28-Di-O-glutaryl-betulin and Analysis of Its Solubility Properties

LÜ Kun, TIAN Shui-qing, FANG Gui-zhen   

  1. Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
  • Received:2008-07-29 Revised:1900-01-01 Online:2009-02-28 Published:2009-02-28

摘要: 为了增强桦木醇的亲水性,对桦木醇的C-3位、C-28位羟基进行修饰,在吡啶作溶剂、二甲基氨基吡啶(DMAP)作催化剂的条件下,与戊二酸酐反应合成桦木醇戊二酸酯。采用FT-IR、1HNMR和MS对产物进行结构表征,并且选用平衡法测定了桦木醇和桦木醇戊二酸酯在丙酮、无水乙醇、水和磷酸盐缓冲溶液(PBS,pH值7.4,)等不同溶剂中的溶解度。结果表明,在丙酮和无水乙醇中,桦木醇戊二酸酯的溶解度是桦木醇的33.52和22.65倍;在水中,桦木醇戊二酸酯的溶解度为0.0021g(100mL水);在PBS中,桦木醇戊二酸酯的溶解度约为0.0015g(100mL PBS),目标产物的亲水性有了显著的改善。

关键词: 桦木醇, 桦木醇戊二酸酯, 合成, 溶解性能

Abstract: To improve water solubility of betulin, two acyl groups were introduced at C-3 and C-28 hydroxy groups of betulin. 3,28-di-O-glutaryl-betulin was synthesized with pyridine as solvent and DMAP as catalyst from betulin and glutaryl anhydride. Its structure was characterized by FT-IR,1HNMR and MS. Solubility data of betulin and 3,28-di-O-glutaryl-betulin in acetone, ethanol, water and phosphate-buffered saline (PBS, pH value 7.4) were determined by equilibrium method. The results showed that in acetone and ethanol, solubilities of 3,28-di-O-glutaryl-betulin were 33.52 and 22.65 times of those of betulin respectively; In water, solubility of 3,28-di-O-glutaryl-betulin was 0.0021g(100mL water), and in PBS, solubility of 3,28-di-O-glutary-betulin was 0.0015g (100mL PBS), the hydrophilicity of 3,28-di-O-glutaryl-betulin was significantly increase.

Key words: betulin, 28-di-O-glutaryl-betulin, synthesis, solubility property

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