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Biflavonoids and a glucopyranoside derivative from Ouratea semiserrata.
Phytochem Anal. 2002 Sep-Oct; 13(5):283-92.PA

Abstract

Two new biflavonoids, 5-hydroxy-7-methoxyflavone-(4' --> O --> 8")-4"',5",7"-trihydroxyflavone and 5-hydroxy-7-methoxyflavone-(4' --> O --> 8")-5",7"-dihydroxy-4"'-methoxyflavone, and the glucopyranoside derivative, 1-O-(4-hydroxyphenyl)-6-O-(4-hydroxybenzoyl)-beta-D-glucopyranoside, as well as the known biflavones lanaraflavone, amentoflavone and podocarpusflavone, the triterpenes lupeol and friedelin, the lignans eudesmin and epieudesmin, the flavonol glycoside rutin, the steroids beta-sitosterol, stigmasterol, 3beta-O-beta-D-glucopyranosylsitosterol, 7-oxostigmast-5-en-3beta-ol and 7-oxostigmasta-5,22-dien-3beta-ol, the carbohydrates alpha- and beta-glucopyranose and 1-O-(4-hydroxybenzoyl)-beta-D-glucopyranoside, and the norsesquiterpene 6,9-dihydroxymegastigma-4,7-dien-3-one, have been isolated from leaves and branches of Ouratea semiserrata. The structures of these compounds were established from spectral data, including two-dimensional NMR experiments and mass spectra.

Authors+Show Affiliations

Curso de Pós-graduação em Química Orgânica, Universidade Federal Rural do Rio de Janeiro, 23851-970 Seropédica-Rio de Janeiro, Brazil.No 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

12918874

Citation

Velandia, Javier Rincon, et al. "Biflavonoids and a Glucopyranoside Derivative From Ouratea Semiserrata." Phytochemical Analysis : PCA, vol. 13, no. 5, 2002, pp. 283-92.
Velandia JR, de Carvalho MG, Braz-Filho R, et al. Biflavonoids and a glucopyranoside derivative from Ouratea semiserrata. Phytochem Anal. 2002;13(5):283-92.
Velandia, J. R., de Carvalho, M. G., Braz-Filho, R., & Werle, A. A. (2002). Biflavonoids and a glucopyranoside derivative from Ouratea semiserrata. Phytochemical Analysis : PCA, 13(5), 283-92.
Velandia JR, et al. Biflavonoids and a Glucopyranoside Derivative From Ouratea Semiserrata. Phytochem Anal. 2002 Sep-Oct;13(5):283-92. PubMed PMID: 12918874.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biflavonoids and a glucopyranoside derivative from Ouratea semiserrata. AU - Velandia,Javier Rincon, AU - de Carvalho,Mário Geraldo, AU - Braz-Filho,Raimundo, AU - Werle,Alceni A, PY - 2003/8/16/pubmed PY - 2003/10/8/medline PY - 2003/8/16/entrez SP - 283 EP - 92 JF - Phytochemical analysis : PCA JO - Phytochem Anal VL - 13 IS - 5 N2 - Two new biflavonoids, 5-hydroxy-7-methoxyflavone-(4' --> O --> 8")-4"',5",7"-trihydroxyflavone and 5-hydroxy-7-methoxyflavone-(4' --> O --> 8")-5",7"-dihydroxy-4"'-methoxyflavone, and the glucopyranoside derivative, 1-O-(4-hydroxyphenyl)-6-O-(4-hydroxybenzoyl)-beta-D-glucopyranoside, as well as the known biflavones lanaraflavone, amentoflavone and podocarpusflavone, the triterpenes lupeol and friedelin, the lignans eudesmin and epieudesmin, the flavonol glycoside rutin, the steroids beta-sitosterol, stigmasterol, 3beta-O-beta-D-glucopyranosylsitosterol, 7-oxostigmast-5-en-3beta-ol and 7-oxostigmasta-5,22-dien-3beta-ol, the carbohydrates alpha- and beta-glucopyranose and 1-O-(4-hydroxybenzoyl)-beta-D-glucopyranoside, and the norsesquiterpene 6,9-dihydroxymegastigma-4,7-dien-3-one, have been isolated from leaves and branches of Ouratea semiserrata. The structures of these compounds were established from spectral data, including two-dimensional NMR experiments and mass spectra. SN - 0958-0344 UR - https://www.unboundmedicine.com/medline/citation/12918874/Biflavonoids_and_a_glucopyranoside_derivative_from_Ouratea_semiserrata_ L2 - https://doi.org/10.1002/pca.656 DB - PRIME DP - Unbound Medicine ER -