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首页> 外文期刊>Bioorganic and Medicinal Chemistry Letters >A new phenylpropanoid and an alkylglycoside from Piper retrofractum leaves with their antioxidant and α-glucosidase inhibitory activity
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A new phenylpropanoid and an alkylglycoside from Piper retrofractum leaves with their antioxidant and α-glucosidase inhibitory activity

机译:一种来自Piper Retrofractum的新的苯基丙烷和烷基糖苷具有抗氧化剂和α-葡萄糖苷酶抑制活性

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摘要

Two new compounds, piperoside (1) and isoheptanol 2(S)-O-β-d- xylopyranosyl (1→6)-O-β-d-glucopyranoside (11), along with 10 known compounds 3,4-dihydroxyallylbenzene (2), 1,2-di-O-β-d-glucopyranosyl-4- allylbenzene (3), tachioside (4), benzyl-O-β-d-glucopyranoside (5), icariside F2 (6), dihydrovomifoliol-3′-O-β-d- glucopyranoside (7), isopropyl O-β-d-glucopyranoside (8), isopropyl primeveroside (9), n-butyl O-β-d-glucopyranoside (10), isoheptanol 2(S)-O-β-d-apiofuranosyl-(1→6)-O-β-d-glucopyranoside (12), were isolated from the leaves of Piper retrofractum. Their structures were determined from 1D-NMR, 2D-NMR, and HR-ESI-MS spectral, a modified Mosher's method, and comparisons with previous reports. All of the isolated compounds showed modest α-glucosidase inhibitory (4.60 ± 1.74% to 11.97 ± 3.30%) and antioxidant activities under the tested conditions.
机译:两种新化合物,哌啶(1)和异庚醇2(S)-O-β-d-吡喃吡喃糖基(1→6)-O-β-d-吡喃葡萄糖苷(11),以及10种已知化合物3,4-二羟基烯丙基苯( 2),1,2-二-O-β-d-吡喃葡萄糖基-4-烯丙基苯(3),橘皮苷(4),苄基-O-β-d-吡喃葡糖苷(5),二十二碳五糖苷F2(6),二氢伏米草酚- 3'-O-β-d-吡喃葡萄糖苷(7),异丙基O-β-d-吡喃葡萄糖苷(8),异丙基伯维糖苷(9),正丁基O-β-d-吡喃葡萄糖苷(10),异庚醇2(S从Piper retrofractum的叶子中分离出)-O-β-d-呋喃呋喃糖基-(1→6)-O-β-d-吡喃葡萄糖苷(12)。通过1D-NMR,2D-NMR和HR-ESI-MS光谱,改进的Mosher方法确定了它们的结构,并与以前的报告进行了比较。在测试条件下,所有分离出的化合物均表现出适度的α-葡萄糖苷酶抑制作用(4.60±1.74%至11.97±3.30%)和抗氧化活性。

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