NMR STUDY ON A NOVEL 18,19-SECO-URSANE SAPONIN ISOLTED FROM ILEX ACULEOLATA

Chinese Journal of Magnetic Resonance

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NMR STUDY ON A NOVEL 18,19-SECO-URSANE SAPONIN ISOLTED FROM ILEX ACULEOLATA

OUYANG Ming-an

Department of Bio-engineering & Technology, Huaqiao University, Quanzhou 362011, China

Received:2003-02-12 Revised:2003-03-20 Published:2003-09-05 Online:2003-09-05
Supported by:
国家自然科学基金资助项目（20272015）.

Abstract

Abstract:

A novel 18,19-seco-ursane saponin, aculeoside I (1) was isolated from the leaves of Ilex aculeolata Nakai. 2D NMR methods were used to elucidate its
chemical structure. The structure of the new saponin was determined as 3,19-dihydroxyl-16,21-epoxy-18,19-seco-13(18)-urs-ene-28-oic-acid-19-O-α-
L-rhamnopyranosyl-(1→2)-α-L-arabinopyranoside.

Key words: NMR, HMBC, NOESY, Ilex aculeolata, Aquifoliaceae, 18,19-seco-ursane, saponin

CLC Number:

O482.53

OUYANG Ming-an. NMR STUDY ON A NOVEL 18,19-SECO-URSANE SAPONIN ISOLTED FROM ILEX ACULEOLATA[J]. Chinese Journal of Magnetic Resonance.

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NMR STUDY ON A NOVEL 18,19-SECO-URSANE SAPONIN ISOLTED FROM ILEX ACULEOLATA

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