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Three new saponins from the leaves of Ilex hylonoma.
- Source :
-
Journal of Asian Natural Products Research . Jun2003, Vol. 5 Issue 2, p89-94. 6p. - Publication Year :
- 2003
-
Abstract
- Three new triterpenoid saponins, hylonosides III-V ( 1 - 3 ) have been isolated, along with three known oleanolic acid saponins ( 4 - 6 ), from the methanol extract of leaves of Ilex hylonoma . The structures were elucidated using a combination of homo- and hetero-nuclear 2D NMR techniques (COSY, TOCSY, NOESY, HMQC and HMBC) and negative FAB-MS. The new compounds were characterized as 3- O -β- d -glucopyranosyl-(1→4)-β- d -glucuronopyranosyl siaresinolic acid-28- O -β- d -glucopyranosyl ester ( 1 ), 3- O -β- d -glucopyranosyl-(1→4)-β- d -glucopyranosyl-(1→2)-β- d -glucuronopyranosyl siaresinolic acid-28- O -β- d -glucopyranosyl ester ( 2 ), 3- O -β- d -glucopyranosyl-(1→4)-β- d -glucopyranosyl-(1→2)-β- d -glucuronopyranosyl oleanolic acid-28- O -β- d -glucopyranosyl ester ( 3 ). [ABSTRACT FROM AUTHOR]
- Subjects :
- *SAPONINS
*AQUIFOLIACEAE
*TRITERPENOID saponins
*ESTERS
*ORGANIC compounds
Subjects
Details
- Language :
- English
- ISSN :
- 10286020
- Volume :
- 5
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Asian Natural Products Research
- Publication Type :
- Academic Journal
- Accession number :
- 10726943
- Full Text :
- https://doi.org/10.1080/10286021000034092