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Showing papers by "Tom J. Mabry published in 2007"


01 Jan 2007
TL;DR: In this article, the n-hexane extract of Syzygium aromaticum was extracted using gas chromatography-mass spectroscopy (GC-MS) and the major components were eugenol (71.56 %) and Eugenol acetate (8.99 %), along with limonin and ferulic aldehyde.
Abstract: Sixteen volatile compounds were identified from the n-hexane extract of the buds of Syzygium aromaticum by using gas chromatography-mass spectroscopy (GC-MS). The major components were eugenol (71.56 %) and eugenol acetate (8.99 %). The dichloromethane extract of the buds yielded limonin and ferulic aldehyde, along with eugenol. The flavonoids tamarixetin 3- O-b-D-glucopyranoside, ombuin 3-O-b-D-glucopyranoside and quercetin were isolated from the ethanol extract; identifications of all these compounds were established by chemical and spectroscopic methods including 1D and 2D NMR. This is the first report of limonin, ferulic aldehyde and these flavonoids from this plant. All extracts and the isolated flavonoids showed strong antioxidant activity against 1, 2-diphenyl picrylhydrazyl (DPPH). Among the tested extracts, the ethanol extract of the clove buds showed remarkable scavenging activity, as compared with synthetic antioxidants such as butylated hydroxyl toluene (BHT). The ethanol extract of clove showed remarkable hepatoprotective activity against paracetamol-induced liver injury in female rats.

113 citations


Journal ArticleDOI
TL;DR: This work describes the first phylogenetic analysis of the entire Asteraceae based only on chemical data, based on a large chemical database comprising ~400 skeletal types of terpenes, coumarins, flavonoids, benzofurans and polyacetylenes isolated from the family.
Abstract: This work describes the first phylogenetic analysis of the entire Asteraceae based only on chemical data. The data matrix used in this study was based on a large chemical database comprising ~400 s...

17 citations


Journal ArticleDOI
TL;DR: Two flavones, hypolaetin 8-O-β-glucuronopyranoside 3″-Sulfate and isoscutellarein 8 O-βglucuropyranoopyraniumide 3 ǫ-sulfate, together with a mixture of other flavones such as hypolabelin, 8 Oβ-β glucuronophyranosides, and kaempferol 3 O-α-rham....
Abstract: Two flavones, hypolaetin 8-O-β-glucuronopyranoside 3″-O-sulfate and isoscutellarein 8-O-β-glucuronopyranoside 3″-O-sulfate, together with hypolaetin 8-O-β-glucuronopyranoside, kaempferol 3-O-α-rham...

2 citations


Journal ArticleDOI
TL;DR: This paper presents an overview of Dr. Mabry's accomplishments in his career as a natural product chemist, first at the University of Zürich as a post-doctoral fellow, and from 1962, as a faculty member at theUniversity of Texas at Austin in the Department of Botany until the late 1990s, when the Biological Sciences programs at UT-Austin were completely reorganized.
Abstract: This paper presents an overview of Dr. Mabry's accomplishments in his career as a natural product chemist, first at the University of Zurich as a post-doctoral fellow, and from 1962, as a faculty m...

1 citations