【摘 要】
:
Two new sesquiterpene lactones, notoserolides A and B, along with 12 known compounds were isolated from the aerial parts of Notoseris porphyrolepis.By means of
【机 构】
:
Laboratory of Nature Materia Medica,College of Chemistry
【基金项目】
:
the Special Project of Biological Science;Technology of the Chinese Academy of Sciences
论文部分内容阅读
Two new sesquiterpene lactones, notoserolides A and B, along with 12 known compounds were isolated from the aerial parts of Notoseris porphyrolepis.By means of spectral methods including MS, NMR (1H NMR, 13C NMR, DEPT, HMQC, HMBC) and X-ray diffraction, as well as chemical reactions, the structures of notoserolides A and B were established as austricin 8-O-β-D-glucopyranoside and 8-O-senecioylaustricin, respectively.
其他文献
A novel reduction system is reported here in which the compounds with terminal C-C triple bond and disubstituted C-C triple bond react with NaBH4/Pd(PPh3)4 in a
Four 1,4-benzodioxane neolignans were first synthesized from pyrogallol, in which the Claisen rearrangement was used to afford three important C6-C3 units.
压力管道的安装作为管道施工的一个重难点内容,一直是业内探讨的热门话题,本文中笔者将结合自己的工作经验,结合在工作实践中遇到的各种安装质量问题,谈谈预防和处理的措施,
在经济社会快速发展的今天,汽车已经成为人们工作和生活中重要的交通工具.然而,当人们尽情的享受现代汽车工业的发展带给我们生活带来便利的同时,我们也不能回避汽车随着行驶
The spiro-calix[4]arenes 3a-b can be synthesized conveniently by the reaction of p-tert-butylcalix[4]arene (1a) or calix[4]arene (1b) with pentaerythritol tetra
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
A Convenient method for the synthesis of fused phosphorusheterocycle 1,3,2-oxazaphosphorin-[3,2-a]-8-oxo-10-thio(or seleno)-[1,3,2]-benzodiazaphosphorines was c
A mild and reliable procedure for the preparation of α-arylpropanoic acids from arylpropanone by Ce(IV) salt oxidative rearrangement is discribed.
比较路拌机和拌和站拌和石灰粉煤灰稳定土混和料的施工性能和确定两种拌和设备的适用条件,提出施工时应根据工程实际情况选择合适的拌和设备。
Comparison of road mixer an