Piptadenol A-C and a-Glucosidase Inhibitor From Piptadenia africana
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چکیده
منابع مشابه
Piptaderol from Piptadenia africana.
A new glyceryl derivative (Glyceryl-1-hexacosanoate) and a flavone derivative (methyletherapigenin) were isolated from the stem bark extract of Piptadenia africana, a western Cameroonian plant species. Common terpenes like sitosterol, beta-amyrin and eicosane were also isolated. These compounds were identified using physical and spectroscopic methods including mp, IR, (1)H and (13)C-NMR, DEPT, ...
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The potent α-glucosidase inhibitor (compound I) was isolated from coffee brews by the activity-based fractionation and identified as a β-carboline alkaloid norharman (9H-pyrido[ 3.4-b]indole) on the basis of mass spectroscopy and nuclear magnetic resonance spectra ((1)H NMR, (13)C NMR, and COSY). The norharman showed a potent inhibition against α-glucosidase enzyme in a concentration dependent ...
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ژورنال
عنوان ژورنال: Research Journal of Phytochemistry
سال: 2008
ISSN: 1819-3471
DOI: 10.3923/rjphyto.2008.27.34