首页> 外文期刊>RSC Advances >Secondary metabolites from the endolichenic fungus Ophiosphaerella korrae
【24h】

Secondary metabolites from the endolichenic fungus Ophiosphaerella korrae

机译:苔藓内生真菌次生藻的次生代谢产物

获取原文
           

摘要

The isolation of the cytotoxic fractions from the endolichenic fungus Ophiosphaerella korrae yielded six new metabolites, including five polyketides (ophiofuranones A ( 1 ) and B ( 2 ), with unusual furopyran-3,4-dione-fused heterocyclic skeletons, ophiochromanone ( 3 ), ophiolactone ( 4 ), and ophioisocoumarin ( 5 )), one sesquiterpenoid ophiokorrin ( 10 ), and nine known compounds. Their structures were established on the basis of the analysis of HRESIMS and NMR spectroscopic data. ECD calculations, GIAO NMR shift calculations and single-crystal X-ray diffraction were employed for the stereo-structure determination. A plausible biogenetic pathway for the ophiofuranones A ( 1 ) and B ( 2 ) was proposed. The cytotoxic assay suggested that the five known perylenequinones mainly contributed to the cytoxicity of the extract. Further phytotoxic studies indicated that ophiokorrin inhibited root elongation in the germination of Arabidopsis thaliana with an IC _(50) value of 18.06 μg mL ~(?1) .
机译:从苔藓内生真菌Ophiosphaerella korrae中分离出细胞毒性部分,产生了6种新的代谢产物,包括5种聚酮化合物(ophiofuranones A(1)和B(2)),以及不常见的呋喃吡喃-3,4-二酮融合杂环骨架,ophophchromanone(3)。 ,ophiolactone(4)和ophioisocoumarin(5)),一种倍半萜类ophookorrin(10)和九种已知化合物。在分析HRESIMS和NMR光谱数据的基础上确定了它们的结构。 ECD计算,GIAO NMR位移计算和单晶X射线衍射用于确定立体结构。提出了ophiofuranones A(1)和B(2)的一个可能的生物遗传途径。细胞毒性测定表明,五种已知的ylene醌主要是造成提取物的细胞毒性。进一步的植物毒性研究表明,卵泡蛋白抑制了拟南芥发芽中的根伸长,IC _(50)值为18.06μgmL〜(?1)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号