据已有文献记载,香姜(姜科)(Alpinia coriandriodora D. Fang)仅分布于广西,现首次在越南发现其分布。该种在形态上与竹叶山姜(A. bambusifolia D. Fang)相近,但其叶片椭圆状披针形、唇瓣浅黄色及带红褐色条纹和花药附属体三角状而与后...据已有文献记载,香姜(姜科)(Alpinia coriandriodora D. Fang)仅分布于广西,现首次在越南发现其分布。该种在形态上与竹叶山姜(A. bambusifolia D. Fang)相近,但其叶片椭圆状披针形、唇瓣浅黄色及带红褐色条纹和花药附属体三角状而与后者有别。提供该种详细的形态学描述以及图版,亦包括在越南的分布及生态的资料。凭证标本保存于越南国立自然博物馆(VNMN)和中国科学院华南植物园(IBSC)。展开更多
Eight new diarylheptanoids,coriandralpinins A-H(1-8),were isolated from the rhizomes of Alpinia coriandriodora,an edible plant of the ginger family.Their structures,including the absolute configurations,were establish...Eight new diarylheptanoids,coriandralpinins A-H(1-8),were isolated from the rhizomes of Alpinia coriandriodora,an edible plant of the ginger family.Their structures,including the absolute configurations,were established by extensive spectroscopic analysis and ECD calculations.Compounds 1-8 have a 1,5-O-bridged diarylheptanoid structure featuring polyoxygenated aryl units.When evaluated for intracellular antioxidant activity using t-BHP stressed RAW264.7 mac-rophages,all these compounds scavenged reactive oxygen species(ROS)in a concentration-dependent manner.Compounds 3 and 5 also showed inhibitory activity against NO release in LPS-induced RAW 264.7 cells.Six known flavonols,7,4′-di-O-methylkaempferol,7-O-methylquercetin,7,4′-di-O-methylquercetin,7,3′,4′-tri-O-methylquercetin,kaempferol 3-O-β-d-(6-O-α-l-rhamnopyranosyl)glucopyranoside,and 3-O-β-d-glucopyranuronosylquercetin were also isolated and characterized from the rhizomes.展开更多
基金supported by Hung Vuong University and the National Foundation for Science&Technology Development(Nafosted)[Grant No.106-NN.03-2015.47(NQB)]
文摘据已有文献记载,香姜(姜科)(Alpinia coriandriodora D. Fang)仅分布于广西,现首次在越南发现其分布。该种在形态上与竹叶山姜(A. bambusifolia D. Fang)相近,但其叶片椭圆状披针形、唇瓣浅黄色及带红褐色条纹和花药附属体三角状而与后者有别。提供该种详细的形态学描述以及图版,亦包括在越南的分布及生态的资料。凭证标本保存于越南国立自然博物馆(VNMN)和中国科学院华南植物园(IBSC)。
基金supported by NSFC Grants(Nos.81172942 and 81872773).
文摘Eight new diarylheptanoids,coriandralpinins A-H(1-8),were isolated from the rhizomes of Alpinia coriandriodora,an edible plant of the ginger family.Their structures,including the absolute configurations,were established by extensive spectroscopic analysis and ECD calculations.Compounds 1-8 have a 1,5-O-bridged diarylheptanoid structure featuring polyoxygenated aryl units.When evaluated for intracellular antioxidant activity using t-BHP stressed RAW264.7 mac-rophages,all these compounds scavenged reactive oxygen species(ROS)in a concentration-dependent manner.Compounds 3 and 5 also showed inhibitory activity against NO release in LPS-induced RAW 264.7 cells.Six known flavonols,7,4′-di-O-methylkaempferol,7-O-methylquercetin,7,4′-di-O-methylquercetin,7,3′,4′-tri-O-methylquercetin,kaempferol 3-O-β-d-(6-O-α-l-rhamnopyranosyl)glucopyranoside,and 3-O-β-d-glucopyranuronosylquercetin were also isolated and characterized from the rhizomes.
