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MRC Letters
Two new triterpenoid saponins from Pittosporum senacia Putterlick (Pittosporaceae)
Article first published online: 27 SEP 2012
DOI: 10.1002/mrc.3876
Copyright © 2012 John Wiley & Sons, Ltd.
Additional Information
How to Cite
Linnek, J., Mitaine-Offer, A.-C., Paululat, T. and Lacaille-Dubois, M.-A. (2012), Two new triterpenoid saponins from Pittosporum senacia Putterlick (Pittosporaceae). Magn. Reson. Chem., 50: 798–802. doi: 10.1002/mrc.3876
Publication History
- Issue published online: 20 NOV 2012
- Article first published online: 27 SEP 2012
- Manuscript Accepted: 9 JUL 2012
- Manuscript Revised: 5 JUL 2012
- Manuscript Received: 6 APR 2012
- Abstract
- Article
- References
- Cited By
Keywords:
- NMR;
- 1H;
- 13C;
- 2D NMR;
- triterpene saponins;
- Pittosporaceae;
- Pittosporum senacia
From the branches of Pittosporum senacia Putterlick (Pittosporaceae), two new triterpenoid saponins, senaciapittosides A and B (1, 2), were isolated. Their structures were elucidated by extensive analysis of one- and two-dimensional nuclear magnetic resonance spectroscopy, high-resolution electrospray ionization mass spectrometry (HR-ESIMS) and chemical evidence as 3-O-[β-d-glucopyranosyl-(1 → 2)]-[α-l-arabinopyranosyl-(1 → 3)]-[α-l-arabinofuranosyl-(1 → 4)]-β-d-glucuronopyranosyl oleanolic acid 28-O-β-d-glucopyranosyl ester (1) and 3-O-[β-d-glucopyranosyl-(1 → 2)]-[α-l-arabinopyranosyl-(1 → 3)]-[α-l-arabinofuranosyl-(1 → 4)]-β-d-glucuronopyranosyl-22-O-α-l-arabinopyranosyl-21-acetoxy R1-barrigenol (2). Compound 2 presents an unusual glycosylation at C-22 of its aglycone. Copyright © 2012 John Wiley & Sons, Ltd.