고구마樹脂중 잘라핀의 糖構成에 관한 硏究

Jalapin purified from the tubers of the sweet potato (Ipomoea batatas) was deacylated and subjected to structural elucidation. Complete and degraded acid hydrolyses indicated the presence of L-rhamnose, D-fucose and D-glucose in the molar ratio of 1: 1: 1 and in the increasing order of acid-stabilit...

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Veröffentlicht in:Journal of the Korean Chemical Society 1969, Vol.13 (1), p.96-101
Hauptverfasser: 이서래, 정구흥, 김호식, SU RAE LEE, KOO HEUNG CHUNG, HO SIK KIM
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Sprache:kor
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Zusammenfassung:Jalapin purified from the tubers of the sweet potato (Ipomoea batatas) was deacylated and subjected to structural elucidation. Complete and degraded acid hydrolyses indicated the presence of L-rhamnose, D-fucose and D-glucose in the molar ratio of 1: 1: 1 and in the increasing order of acid-stability. While two moles of periodate were consumed per mole of the product, D-glucose survived in the oxidation. The following structure was, therefore, proposed tentatively for the deacylated jalapin: L-$Rha_f$-(1${\to}$4)-D-$Fuc_p$-(1${\to}$3)-D-$Glu_p$-(1${\to}$11)-jalapinolic acid. 고구마중 잘라핀의 糖構成을 究明하기 위하여 고구마塊根에서 정제한 잘라핀을 脫아실化한 후 가수분해한 결과 L-rhamnose, D-fucose, D-glucose가 1:1:1의 分子比 및 上記順序의 酸安定度를 가짐을 알았다. 脫아실化한 잘라핀 1몰은 2몰을 過沃素酸에 의하여 산화되었으나 D-glucose는 산화되지 아니하였다. 따라서 고구마중 脫아실化한 잘라핀의 가능한 化學構造를 다음과 같이 제안하였다. L-$Rha_f$-(1${\to}$4)-D-$Fuc_p$-(1${\to}$3)-D-$Glu_p$-(1${\to}$11)-jalapinolic acid.
ISSN:1017-2548