记述了在广东从化发现的中国蚌科一新记录属、一新记录种,即拟无齿蚌属Pilsbryoconcha,扁平拟无齿蚌Pilsbryoconcha compressa von Martens,1860,对其贝壳形态作了详细描述.介绍了该属物种的主要鉴别特征和分布地区.结合已有资料,推测...记述了在广东从化发现的中国蚌科一新记录属、一新记录种,即拟无齿蚌属Pilsbryoconcha,扁平拟无齿蚌Pilsbryoconcha compressa von Martens,1860,对其贝壳形态作了详细描述.介绍了该属物种的主要鉴别特征和分布地区.结合已有资料,推测本属可能在我国华南地区有更广泛的分布.展开更多
A new compound, 8,8＇-dienecyclostellettamine, was isolated from the marine sponge Amphimedon compressa. Its structure was elucidated by spectroscopic methods including 1D and 2D NMR, UV, IR, ESI-MS, MALDI-MS techniqu...A new compound, 8,8＇-dienecyclostellettamine, was isolated from the marine sponge Amphimedon compressa. Its structure was elucidated by spectroscopic methods including 1D and 2D NMR, UV, IR, ESI-MS, MALDI-MS techniques. It is probably an important precursor of the manzamine alkoids, and also showed vigorous antibacterial activities.展开更多
Two new compounds, 1-（3-methoxy-4-hydroxyphenyl）-3-（3,5-dimethoxy-4-hydroxyphenyl）-propane （1） and 5, 7, 3＇-trlmethyoxyflavan-4＇-O-β-D-glucopyranoslde （2） were Isolated from the ethanol extract of the dried...Two new compounds, 1-（3-methoxy-4-hydroxyphenyl）-3-（3,5-dimethoxy-4-hydroxyphenyl）-propane （1） and 5, 7, 3＇-trlmethyoxyflavan-4＇-O-β-D-glucopyranoslde （2） were Isolated from the ethanol extract of the dried aerial parts of Phacellarla compressa Benth., together with 2,3-bis[（4-hydroxy-3,5-dimethoxyphenyl）-methyl]-1,4- butanedlol （3）, ethyl 3,4,5-trlhydroxybenzoate （4）, methyl 3, 4, 5-trlhydroxybenzoete （5）, β-sltoeterol （6）, 5, 7, 3＇, 4＇- tetrahydroxyfiavan （7）, lupeol （8）, zhebelreslnol （9）, quercetln-3-O-α-L-rhamnopyranoslde （10）, （＋）-cetechin （11）, betulln （12）, β-daucosterol （13）, （＋）-sydngareslnol （14）, scopoletln （15）, and proxlmadlol （16）. The structures of these compounds were determined by spectral evidence or by comparing them with authentic samples. Compound 9 showed α-amylase Inhibitory activity of 57.55% at a concentration of 50 μg/mL.展开更多
文摘记述了在广东从化发现的中国蚌科一新记录属、一新记录种,即拟无齿蚌属Pilsbryoconcha,扁平拟无齿蚌Pilsbryoconcha compressa von Martens,1860,对其贝壳形态作了详细描述.介绍了该属物种的主要鉴别特征和分布地区.结合已有资料,推测本属可能在我国华南地区有更广泛的分布.
基金supported by the National Natural Sciences Foundation of China(No.20472040)the Natural Science Foundation of Zhejiang Province(No.M40703)the Pao Yu-kong and Pao Zhao-Long Scholarship.
文摘A new compound, 8,8＇-dienecyclostellettamine, was isolated from the marine sponge Amphimedon compressa. Its structure was elucidated by spectroscopic methods including 1D and 2D NMR, UV, IR, ESI-MS, MALDI-MS techniques. It is probably an important precursor of the manzamine alkoids, and also showed vigorous antibacterial activities.
文摘Two new compounds, 1-（3-methoxy-4-hydroxyphenyl）-3-（3,5-dimethoxy-4-hydroxyphenyl）-propane （1） and 5, 7, 3＇-trlmethyoxyflavan-4＇-O-β-D-glucopyranoslde （2） were Isolated from the ethanol extract of the dried aerial parts of Phacellarla compressa Benth., together with 2,3-bis[（4-hydroxy-3,5-dimethoxyphenyl）-methyl]-1,4- butanedlol （3）, ethyl 3,4,5-trlhydroxybenzoate （4）, methyl 3, 4, 5-trlhydroxybenzoete （5）, β-sltoeterol （6）, 5, 7, 3＇, 4＇- tetrahydroxyfiavan （7）, lupeol （8）, zhebelreslnol （9）, quercetln-3-O-α-L-rhamnopyranoslde （10）, （＋）-cetechin （11）, betulln （12）, β-daucosterol （13）, （＋）-sydngareslnol （14）, scopoletln （15）, and proxlmadlol （16）. The structures of these compounds were determined by spectral evidence or by comparing them with authentic samples. Compound 9 showed α-amylase Inhibitory activity of 57.55% at a concentration of 50 μg/mL.
