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Antioxidant oligomeric proanthocyanidins from Cistus salvifolius.
Nat Prod Res. 2006 Nov; 20(13):1216-24.NP

Abstract

The purified proanthocyanidin oligomers of Cistus salvifolius herb extract accounted for 78% of the total proanthocyanidins and 73% of the total antioxidant activity of this extract. To elucidate the structure of the oligomer, it was depolymerized by acid catalysis in the presence of phloroglucinol. The structures of the resulting flavan-3-ols and phloroglucinol adducts were determined on the basis of 1D- and reverse 2D-NMR (HSQC, HMBC) experiments of their peracetylated derivatives, MALDI-TOF-MS and CD spectroscopy. These observations resulting from the degradation with phloroglucinol were confirmed by 13C NMR spectroscopy of the oligomer. The mean molecular weight of the higher oligomeric fraction was estimated to be 5-6 flavan-3-ol-units.

Authors+Show Affiliations

Faculty of Pharmacy, The University of Petra, PO Box 961343, Amman, Jordan. f_qadan@yahoo.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17127512

Citation

Qa'Dan, Fadi, et al. "Antioxidant Oligomeric Proanthocyanidins From Cistus Salvifolius." Natural Product Research, vol. 20, no. 13, 2006, pp. 1216-24.
Qa'Dan F, Petereit F, Mansoor K, et al. Antioxidant oligomeric proanthocyanidins from Cistus salvifolius. Nat Prod Res. 2006;20(13):1216-24.
Qa'Dan, F., Petereit, F., Mansoor, K., & Nahrstedt, A. (2006). Antioxidant oligomeric proanthocyanidins from Cistus salvifolius. Natural Product Research, 20(13), 1216-24.
Qa'Dan F, et al. Antioxidant Oligomeric Proanthocyanidins From Cistus Salvifolius. Nat Prod Res. 2006;20(13):1216-24. PubMed PMID: 17127512.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant oligomeric proanthocyanidins from Cistus salvifolius. AU - Qa'Dan,Fadi, AU - Petereit,Frank, AU - Mansoor,Kenza, AU - Nahrstedt,Adolf, PY - 2006/11/28/pubmed PY - 2007/1/26/medline PY - 2006/11/28/entrez SP - 1216 EP - 24 JF - Natural product research JO - Nat Prod Res VL - 20 IS - 13 N2 - The purified proanthocyanidin oligomers of Cistus salvifolius herb extract accounted for 78% of the total proanthocyanidins and 73% of the total antioxidant activity of this extract. To elucidate the structure of the oligomer, it was depolymerized by acid catalysis in the presence of phloroglucinol. The structures of the resulting flavan-3-ols and phloroglucinol adducts were determined on the basis of 1D- and reverse 2D-NMR (HSQC, HMBC) experiments of their peracetylated derivatives, MALDI-TOF-MS and CD spectroscopy. These observations resulting from the degradation with phloroglucinol were confirmed by 13C NMR spectroscopy of the oligomer. The mean molecular weight of the higher oligomeric fraction was estimated to be 5-6 flavan-3-ol-units. SN - 1478-6419 UR - https://www.unboundmedicine.com/medline/citation/17127512/Antioxidant_oligomeric_proanthocyanidins_from_Cistus_salvifolius_ L2 - https://www.tandfonline.com/doi/full/10.1080/14786410600899225 DB - PRIME DP - Unbound Medicine ER -