薬用資源の研究(第31報) : みつばうつぎの葉の成分について

概要

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A new glycoside, mp 248-251°, was obtained from the leaves of Staphylea Bumalda DC. (Japanese name'Mitsuba-Utsugi'). This substance gave a dark purple color to ferric chloride reaction, was negative to the flavone reaction, and the presence of a carbonyl group and a conjugated double bond was presumed from its infrared spectrum. Hydrolysis with 10% sulfuric acid afforded 2 moles of glucose and an aglycone as pale yellow prisms, mp 269-270°, which formed a diacetate of mp 134-136°. The NMR spectrum of the aglycone suggested it to be 2-methyl-5,7-dihydroxychromone (noreugenin), and the fact was confirmed by mixed fusion and comparison of the infrared spectra with the synthesized sample. It follows, therefore, that this glycoside is noreugenin 7-diglucoside and was named staphylin.
公益社団法人日本薬学会の論文
1968-10-25