ENHANCED CHARTREUSIN SOLUBILITY BY HYDROXYBENZOATE HYDROTROPY

被引:62
作者
POOCHIKIAN, GK
CRADOCK, JC
机构
[1] Analytical and Product Development Section, Pharmaceutical Resources Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
关键词
Antineo‐plastic agents; potential—chartreusin; aqueous solubility enhanced by hydroxybenzoates; Chartreusin—aqueous solubility enhanced by hydroxybenzoates; conformation; Cytotoxic agents—chartreusin; Hydroxybenzoates—electrostatic and hydrophobic interactions; stability constants;
D O I
10.1002/jps.2600680620
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
The apparent aqueous solubility of the water‐insoluble cytotoxic agent, chartreusin, was increased at neutral pH in the presence of hydroxybenzoates. Water molecules play an important role in the chartreusin conformation. Studies included solubility and spectral examinations. The weakest and strongest interactants with chartreusin were sodium benzoate and sodium trihydroxybenzoate, respectively, while the effect of mono‐ and dihydroxybenzoates was intermediate. A plane‐to‐plane orientation of chartreusin and the ligand molecules brought together by electrostatic and hydrophobic interactions is postulated. The dramatic chartreusin aqueous solubility increase relative to its aglycone, chartarin, under similar conditions was best rationalized by micellization. Copyright © 1979 Wiley‐Liss, Inc., A Wiley Company
引用
收藏
页码:728 / 732
页数:5
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