کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9557318 | 1380194 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phenylpropanoid glucosides from leaves of Coussarea hydrangeifolia (Rubiaceae)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Phenylpropanoid glucosides from leaves of Coussarea hydrangeifolia (Rubiaceae) Phenylpropanoid glucosides from leaves of Coussarea hydrangeifolia (Rubiaceae)](/preview/png/9557318.png)
چکیده انگلیسی
Phenylpropanoid glycosides, 1â²-O-benzyl-α-l-rhamnopyranosyl-(1â³Â â 6â²)-β-d-glucopyranoside (1) and α-l-xylopyranosyl-(4â³Â â 2â²)-(3-O-β-d-glucopyranosyl)-1â²-O-E-caffeoyl-β-d-glucopyranoside (2), together with the known derivatives, 1,6-di-O-caffeoyl-β-d-glucopyranoside (3), 1-O-(E)-caffeoyl-β-d-glucopyranoside (4) and 1-O-(E)-feruloyl-β-d-glucopyranoside (5), were isolated from leaves of Coussarea hydrangeifolia. Their structures were determined by IR, HRESIMS, and 1D and 2D NMR experiments, and their antioxidant activities, evaluated by assaying the free radical scavenging capacity using the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical as substrate. The antioxidant activities of 3 and 4 (IC50 values of 15.0 and 19.2 μM, respectively) were comparable to that of the standard positive control caffeic acid, whilst 2 and 5 were only weakly active and 1 was inactive.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Phytochemistry - Volume 66, Issue 16, August 2005, Pages 1927-1932
Journal: Phytochemistry - Volume 66, Issue 16, August 2005, Pages 1927-1932
نویسندگان
Lidilhone Hamerski, Mauro Dionei Bomm, Dulce Helena Siqueira Silva, Maria Cláudia Marx Young, Maysa Furlan, Marcos Nogueira Eberlin, Ian Castro-Gamboa, Alberto José Cavalheiro, Vanderlan da Silva Bolzani,