New flavonoid C–O–C dimers and other chemical constituents from Garcinia brevipedicellata stem heartwood
-
Bintou Abderamane
,
Alain Blond
Abstract
The methanol extract of the stem heartwood of Garcinia brevipedicellata has furnished three new flavonoid C–O–C dimers, brevipedicilones A (6), B (8) and C (10), along with five previously reported flavonoid dimers, viz. amentoflavone (1), 4″′-O-methylamentoflavone (2), robustaflavone (3), 4′-O-methyl robustaflavone (4) and tetrahinokiflavone (5). The new structures, which are composed of flavanone–flavanonol or flavanonol–flavanonol sub-units, were established based on spectroscopic analysis including 1D and 2D NMR (1H-1H COSY, HSQC, HMBC, and NOESY) spectroscopy, and by comparing their spectral data with those reported for related compounds.
Acknowledgments
We thank the University of Yaounde for financial support, Mr. Lionel Debost for mass spectra and Mr. Nana Victor of the National Herbarium Yaounde for the collection and the identification of plant material.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- In vitro neuroprotective potential of the monoterpenes α-pinene and 1,8-cineole against H2O2-induced oxidative stress in PC12 cells
- Neem tree (Azadirachta indica) extract specifically suppresses the growth of tumors in H22-bearing Kunming mice
- Orofacial antinociceptive effect of the ethanolic extract of Annona vepretorum Mart. (Annonaceae)
- Identification and characterization of microRNAs and their target genes from Nile tilapia (Oreochromis niloticus)
- Chemotherapeutic effect of Berberis integerrima hydroalcoholic extract on colon cancer development in the 1,2-dimethyl hydrazine rat model
- New flavonoid C–O–C dimers and other chemical constituents from Garcinia brevipedicellata stem heartwood
- GDP-D-mannose pyrophosphorylase from Pogonatherum paniceum enhances salinity and drought tolerance of transgenic tobacco
- Hypoglycemic activity of Gleditsia caspica extract and its saponin-containing fraction in streptozotocin-induced diabetic rats
- Antinociceptive activity of Tibouchina pereirae, an endemic plant from the Brazilian semiarid region
- Heteroplasmy and atrazine resistance in Chenopodium album and Senecio vulgaris
- Extremely high boron tolerance in Puccinellia distans (Jacq.) Parl. related to root boron exclusion and a well-regulated antioxidant system
Articles in the same Issue
- Frontmatter
- In vitro neuroprotective potential of the monoterpenes α-pinene and 1,8-cineole against H2O2-induced oxidative stress in PC12 cells
- Neem tree (Azadirachta indica) extract specifically suppresses the growth of tumors in H22-bearing Kunming mice
- Orofacial antinociceptive effect of the ethanolic extract of Annona vepretorum Mart. (Annonaceae)
- Identification and characterization of microRNAs and their target genes from Nile tilapia (Oreochromis niloticus)
- Chemotherapeutic effect of Berberis integerrima hydroalcoholic extract on colon cancer development in the 1,2-dimethyl hydrazine rat model
- New flavonoid C–O–C dimers and other chemical constituents from Garcinia brevipedicellata stem heartwood
- GDP-D-mannose pyrophosphorylase from Pogonatherum paniceum enhances salinity and drought tolerance of transgenic tobacco
- Hypoglycemic activity of Gleditsia caspica extract and its saponin-containing fraction in streptozotocin-induced diabetic rats
- Antinociceptive activity of Tibouchina pereirae, an endemic plant from the Brazilian semiarid region
- Heteroplasmy and atrazine resistance in Chenopodium album and Senecio vulgaris
- Extremely high boron tolerance in Puccinellia distans (Jacq.) Parl. related to root boron exclusion and a well-regulated antioxidant system
