A New Triterpenoid Saponin from Rhaponticum uniflorum (Compositae)

A new triterpenoid saponin, namely unifloroside, together with five known compounds, was isolated from Rhaponticum uniflorum (L.) DC. The structure of the new triterpenoid saponin was elucidated as 3_O_ α_L_arabinopyranosyl_urs_9(11),12_dien_28_oic acid β_D_glucopyranosyl ester mainly by using 1D, 2D_NMR techniques and chemical methods.

Triterpenes and Other Constituents from Rhaponticum uniflorum

From the roots of Rhaponticum uniflorum a new triterpene was isolated together with ursolic acid(2), 3-oxo-19a-hydroxyurs-12-en-28-oic acid (3), pomolic acid (4), 2a,3a,19a-trihydroxyurs-12-en-28-oic acid (5), arctic acid (6), catechin (7) and b-sitosterol (8). The structure of the new compound was elucidated as 2a,3a,19a,25-tetrahydroxyurs-12-en-23,28-dioic acid (1) on the basis of spectral and chemical methods.

漫话李白诗中的“月”

月在李白诗中可谓姿态万千。数月之名,有秋月、溪月、湖月、江月、海月,山月、碧山月、关山月,峨嵋山月、汉月、秦地月、楚关月、潇湘月、西江月、边城月、头陀月、罗浮月、金陵月、芦州月、沧岛月、天门月、青天月、云间月、遥台月。喻月之貌,有明镜、瑶台镜、飞天镜、琮钩、素盘、白玉盘、半轮。

Separation and Quantitative Determination of Three Phytoecdysteroids in Rhaponticum uniflorum by High Performance Liquid Chromatograghy

An anlytical method for the separation and quantitative determination of three phytoecdysteroids in Rhaponticum uniflorum by high performance liquid chromatography has been developed.Three phytoecdysteroids,ecdysterone (Ⅰ),rha- pontisterone(Ⅱ) and turkesterone(Ⅲ) were separated and determined quantitatively by using the solvent system MeOH-H_2O(40∶60) at 242 nm with flow rate of 1.5ml/min,the operation can be completed in 10 minutes.Using the external standard method,the content of three phytoecdysteroids in the roots and aerial parts of Rhaponticum uniflorum obtained from dif- ferent localities was determined.It is proved that this method is sensitive and accurate,and with good reproducibility.

杀驿

登场人物 吴承恩、陈义、二差官、驿卒.吴承恩官服上吴承恩(念)思念大人多忠义,梦魂常游到京畿.(白)自从那年失落王公子之后,逃出京师,更名邹奇,经友人举荐,来作芦州驿丞.驿卒 走呀、走呀,禀老爷!吴承恩 讲.驿卒 有一京解老爷,押着一位犯官老爷。

初识瓦屑坝

穿行在瓦屑坝,一切都感到新奇和神秘。胡氏私港流了千百年的河水,流向不尽的远方。当年先祖立于此,心中有何感想?扁子湖大而无边的瓦砾滩,在明,在元,在宋,在唐,又是一个什么样的繁忙码头?沿湖密布的古窑口,年复一年,积累的多少陶瓦,运往何方,又用在何处?

美哉 天河湾

"君不见,黄河之水天上来,奔流到海不复还""大漠孤烟直,长河落日圆""黄河远上白云间,一片孤城万仞山"……每当走近黄河宁夏最北那处叫天河湾的地方,这描摹黄河的壮美诗句就会禁不住涌上心头,望着那奔流不息的河水,思绪也总会在渺渺天际飘荡……

创富民兴县大业 建和谐平安上高

为建设和谐平安江西,共创富民兴赣大业,上高县抓住重点,注重在三个方面下工夫:抓实着力点,在推进改革开放上有大动作一是坚定不移抓改革。进一步巩固企业改革成果,帮助和指导改制企业建立现代企业制度,提高企业的核心竞争力。稳妥推进事业单位改革,精简压缩行政管理型事业单位,加快公益型和技术型事业单位市场化运作步伐。继续深化农村税费改革和各项配套改革,全面落实免征农业税政策。