(+)-Frutescone A (1) and B (2),two novel myrcene-conjugated polymethylated phloroglucinols with an unprecedented spiro-[5.5]undecene skeleton,were isolated from the aerial part of Baeckea frutescens.T
Marine-derived fungi have attracted increasing attention from those seeking new pharmaceutically useful natural products in recent years[1].Three new dihydroisocoumarin penicimarins G-I (1-3),together
红树植物生长于热带亚热带海岸潮问的特殊地带,由于其生态环境的特殊性,使得红树植物富含独特的内生微生物.这些内生微生物能够产生大量结构新颖、活性显著的次级代谢产物[1].本研究组已从来源于尖瓣海莲的内生真菌中分离获得具有抗肿瘤、抗菌等生物活性的蒽醌类、吡喃酮等化合物[2, 3].为寻找具有抗肿瘤、抗菌等生物活性的化合物,本文对一株源于海南红树尖瓣海莲(Bruiera sexangula var.rh
The aim of this experiment is to intensively study the chemical constituents,especially organic acids from a medicinal plant Portulaca oleracea L.,and screen their anti-inflammatory activity.Twenty co
珠芽艾麻Laporteabul bifera为荨麻科艾麻属多年生草本植物,分布广泛,在辽宁、吉林、黑龙江、河南、贵州等地均有发现,其资源较丰富。一般全草或根入药,具有祛风除湿,活血化瘀作用,民间用于治疗风湿麻木,跌打损伤,骨折、脾虚、消化不良[1]。目前对该种植物有效成分的研究较少,仅分离得到B-谷甾醇、胡萝卜苷、亚油酸甲酯等几种成分[2]。为了进一步对该药用植物资源进行有效地开发利用,对其化学成