Bioactive Saponins and Glycosides. III. Horse Chestnut. (1): The Structures, Inhibitory Effects on Ethanol Absorption, and Hypoglycemic Activity of Escins Ia, Ib, IIa, IIb, and IIIa from the Seeds of Aesculus hippocastanum L.
Masayuki YOSHIKAWAKyoto Pharmaceutical University, JapanToshiyuki MurakamiKyoto Pharmaceutical University, Faculty of Pharmaceutical Sciences, Osaka University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical UniversityHisashi MatsudaKyoto Pharmaceutical University, Faculty of Pharmaceutical Sciences, Osaka University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical UniversityJohji YamaharaKyoto Pharmaceutical University, Faculty of Pharmaceutical Sciences, Osaka University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical UniversityNobutoshi MurakamiKyoto Pharmaceutical University, Faculty of Pharmaceutical Sciences, Osaka University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical UniversityIsao KitagawaKyoto Pharmaceutical University, Faculty of Pharmaceutical Sciences, Osaka University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University, Kyoto Pharmaceutical University
1996en
ABI
Аннотация
Five bioactive triterpene oligoglycosides named escins, Ia, Ib, IIa, IIb, and IIIa were isolated from the seeds of horse chestnut tree, Aesculus hippocastanum L. (Hippocastanaceae). The chemical structures of escins Ia, Ib, IIa, IIb, and IIIa were determine on the basis of chemical and physicochemical evidence, which included selective cleavage of the glucuronide linkage using photochemical reaction and lead tetraacetate decarboxylation reaction. Escins Ia, Ib, IIa, and IIb were found to exhibit an ethanol absorption-inhibitory effect and hypoglycemic activity in the oral glucose tolerance test in rats. Some structure-activity relationships are reported.
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