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Identification of triterpene saponins in Quercus robur L. and Q. petraea Liebl. heartwood by LC-ESI/MS and NMR by G. Arramon; C. Saucier; D. Colombani; Y. Glories is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract A detailed structural study of the major acidic triterpene saponins from European oak heartwood, __Quercus robur__ L. and __Q. petraea__ Liebl., revealed the presence of 2α,3β,19α‐trihydroxyolean‐12‐ene‐24,28‐dioic acid (**1**), 2α,3β,19α‐23‐tetrahydroxyolean‐12‐ene‐24,28‐dioic acid (**2**), and their corresponding glycosides, 28‐β‐D‐glucopyranosyl‐2α,3β,19α‐trihydroxyolean‐12‐ene‐24,28‐dioic acid (**3**), and 28‐β‐D‐glucopyranosyl‐2α,3β,19α,23‐tetrahydroxyolean‐12‐ene‐24,28‐dioic acid (**4**). Compounds were isolated and purified by successive flash chromatography and semi‐preparative HPLC, and structurally determined by NMR and LC‐ESI/MS in the negative ion mode. Compounds **2** and **4** have been identified for the first time in __Quercus__ species and are new compounds. Copyright © 2002 John Wiley & Sons, Ltd.

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Author

G. Arramon; C. Saucier; D. Colombani; Y. Glories

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0958-0344)

Published

2002

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)