Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (11): 2405.doi: 10.7503/cjcu20170854

• Analytical Chemistry • Previous Articles     Next Articles

Relative Hydrophobicity of Drug Molecules and Retention Behavior in Hydrophobic Interaction Chromatography

YANG Tong, PENG Rong, HUANG Xinyu, SUN Yansong, CHEN Xiaonong*()   

  1. Beijing Laboratory of Biomedical Materials,College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2017-12-29 Online:2018-11-10 Published:2018-08-31
  • Contact: CHEN Xiaonong E-mail:chenxn@mail.buct.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.20874004).

Abstract:

Botanical medicine plays a significant role in research and production of new drugs, and attracts special attention due to its unique merits, such as rich source, less side effect. There exists certain difficulties to get target products from plant mixture in isolation and purification process. Reverse phase chromatography based on the difference in the polarity and hydrophobicity of drugs is one of the most important methods for purify active ingredients in plants. It is technical significant to establish a simple method to determine the hydrophobicity(retention time) of a target drug compound so as to design the stationary phase materials in chromatographic separation and collect mobile phase solution at an appropriate eluting period. In this study, a variety of botanical medicines were selected as model compounds, their solubility parameters δt were calculated by the group contribution method based on the molecular structure of the model compounds and relative retention times tRR were determined by HPLC. The mathematical model correlating the solubility parameter and the relative retention time is established, tRR=-0.032+7.27144$e^{-\delta_{t}/3.53874}$(R=0.97). By the method we established, the relative retention time of a drug compound can be obtained by calculating the solubility parameter, which can be used to predict the hydrophobicity and determine the appropriate elution time of such drug compound from hydrophobic membrane chromatography.

Key words: Botanical medicine, Solubility parameter, Relative retention time, Hydrophobicity

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