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Antioxidant principles from Bauhinia tarapotensis.
J Nat Prod. 2001 Jul; 64(7):892-5.JN

Abstract

A new cyclohexenone (1) and a new caffeoyl ester derivative (2), together with the known compounds (-)-isolariciresinol 3-alpha-O-beta-D-glucopyranoside (3), (+)-1-hydroxypinoresinol 1-O-beta-D-glucopyranoside (4), isoacteoside (5), luteolin 4'-O-beta-D-glucopyranoside (6), and indole-3-carboxylic acid (7), were isolated from the leaves of Bauhinia tarapotensis. The structures of these new compounds were determined by spectroscopic data analysis. The antioxidant activities of 1-7 were determined by measuring their free radical scavenging effects, using the 1,1-diphenyl-2-dipicrylhydrazyl free radical (DPPH) and Trolox equivalent antioxidant activity (TEAC) methods, and the coupled oxidation of beta-carotene and linoleic acid. Compounds 3-5 showed good activities in the DPPH and TEAC tests, while compounds 1 and 2 were active in the coupled oxidation of beta-carotene and linoleic acid bioassay.

Authors+Show Affiliations

Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno, 33, 56126 Pisa, Italy. braca@farm.unipi.itNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

11473417

Citation

Braca, A, et al. "Antioxidant Principles From Bauhinia Tarapotensis." Journal of Natural Products, vol. 64, no. 7, 2001, pp. 892-5.
Braca A, De Tommasi N, Di Bari L, et al. Antioxidant principles from Bauhinia tarapotensis. J Nat Prod. 2001;64(7):892-5.
Braca, A., De Tommasi, N., Di Bari, L., Pizza, C., Politi, M., & Morelli, I. (2001). Antioxidant principles from Bauhinia tarapotensis. Journal of Natural Products, 64(7), 892-5.
Braca A, et al. Antioxidant Principles From Bauhinia Tarapotensis. J Nat Prod. 2001;64(7):892-5. PubMed PMID: 11473417.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant principles from Bauhinia tarapotensis. AU - Braca,A, AU - De Tommasi,N, AU - Di Bari,L, AU - Pizza,C, AU - Politi,M, AU - Morelli,I, PY - 2001/7/28/pubmed PY - 2001/10/12/medline PY - 2001/7/28/entrez SP - 892 EP - 5 JF - Journal of natural products JO - J Nat Prod VL - 64 IS - 7 N2 - A new cyclohexenone (1) and a new caffeoyl ester derivative (2), together with the known compounds (-)-isolariciresinol 3-alpha-O-beta-D-glucopyranoside (3), (+)-1-hydroxypinoresinol 1-O-beta-D-glucopyranoside (4), isoacteoside (5), luteolin 4'-O-beta-D-glucopyranoside (6), and indole-3-carboxylic acid (7), were isolated from the leaves of Bauhinia tarapotensis. The structures of these new compounds were determined by spectroscopic data analysis. The antioxidant activities of 1-7 were determined by measuring their free radical scavenging effects, using the 1,1-diphenyl-2-dipicrylhydrazyl free radical (DPPH) and Trolox equivalent antioxidant activity (TEAC) methods, and the coupled oxidation of beta-carotene and linoleic acid. Compounds 3-5 showed good activities in the DPPH and TEAC tests, while compounds 1 and 2 were active in the coupled oxidation of beta-carotene and linoleic acid bioassay. SN - 0163-3864 UR - https://www.unboundmedicine.com/medline/citation/11473417/Antioxidant_principles_from_Bauhinia_tarapotensis_ L2 - https://doi.org/10.1021/np0100845 DB - PRIME DP - Unbound Medicine ER -