,TWO NOVEL FLAVONOID GLYCOSIDES FROM CRATAEGUS PINNATIFIDA BGE.VAR. MAJOR N.E.BR.r

来源 :亚洲天然物产研究(英文版) | 被引量 : 0次 | 上传用户:chinamp3jgy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Two novel natural products, namely pinnatifida C, pinnatifida D, were isolated from the leaves of Crataegus pinnatifida Bge.var.ajor N.E.Br. Their structures were elucidated by the spectro scopic analysis and chemical evidence.
其他文献
国家的结构形式往往影响着国家的立法体制,一般单一制国家中央集中立法权,地方不存在立法权;联邦制国家,立法权不集中于中央,由中央与地方进行分权。然而,随着社会的发展,国
本文通过对政治哲学诸词语的辨析和宪法学诸概念的梳理来澄澈出宪治存在的空间,从价值和功能上对宪治做出描述。在描述过程中,力求回避任何主观形式的定义——无论国人惯常的
A new ceramide, (2S,3R,4E)-l,3-dihydroxy-2-[(hexadecanoyl)amino]-nonadeca-4-ene (1), chol est-5-en-3β,7β,19-triol (2), identified as its, peracetyl derivative
A new phenolic glycoside, 4-propionyl-2,6-dimethoxyphenyl β-D-glucopyranoside (1) and a new trans-clerodane diterpene named 19-deacetylconyzalactone (2), were
高空抛物案件因其特殊的浸权行为及颇有争议的法律后果,一直都是学术界研究讨论的热点。刚获通过的《中华人民共和国侵权责任法》(以下简称《侵权责任法》)对高空抛物侵权行
Four new norditerpenoid alkaloids, geniculatines A (1), B (4), C (7) and D (8), were isolated from the roots of Aconitum geniculatum Fletcher, and their structu
Three triterpenoidal saponins, saikosaponin v-l(1), 6″-O-acetyl-saikosaponin b2 (2) and 6"-O acetyl-saikosaponin d(3) were isolated from the roots of the title
在油田开采过程当中,随着其整体开采进度的不断推进,整个油田的开采效率会出现一定的下滑趋势.因此,必须对油田的整体情况进行有效测量,并实现相关分析,重新认知油田现状,保
Amide derivatives of ginkgolide A were prepared and evaluated for their in vitro ability to inhibit the PAF-induced aggregation of rabbit platelets. They showed
目前,我国的教育水平发展迅速,在对国内外成人高等教育教学比较研究基础上,面向新工科背景下对成人高等教育提出新的要求,研究成人高等教育培养新目标.