1) pentacyclic triterpenic acid
五环三萜酸
1.
13 C NMR analysis of two natural pentacyclic triterpenic acids;
两种天然五环三萜酸的 ~(13)C 核磁共振谱分析
2.
It is a kind of pentacyclic triterpenic acid which has a extreme similarity in structure to theirs.
从仙草（Mcsona Chinensis Benth)中分离提取到一种化合物，经红外光谱、核磁共振及质谱等测试分析，该仙草提取物既不是熊果酸（ursolic acid)，也非齐墩果酸（oleanolicacid）而是一种与它们结构极为相似的五环三萜酸化合物。
2) pentacyclic triterpene
五环三萜
1.
Recent Progress in Biotransformation of Pentacyclic Triterpenes;
五环三萜生物转化研究概述
2.
Aim:To search for novel modulators of glycogen metabolism through structural modifications of natural pentacyclic triterpenes.
目的:对天然五环三萜进行结构修饰,寻找新型糖原代谢调控药物。
3) pentacyclic triterpenoids
五环三萜
1.
Advances in studies on three pentacyclic triterpenoids and their derivatives against ADIS;
3种五环三萜类化合物及其衍生物抗艾滋病的研究进展
2.
By using silica gel column chromatography,Sephadex LH-20 chromatography and semi-preparative reversed phase liquid chromatography,four pentacyclic triterpenoids were isolated from n-butanol extract of caulis Marsdeniae tenocissimae.
利用硅胶柱色谱法、Sephadex LH-20凝胶柱色谱法及半制备高效液相色谱法,从乌骨藤的正丁醇萃取物中分离得到4种五环三萜类化合物。
3.
Results and conclusion Four pentacyclic triterpenoids and one sterol were obtained from Geum japonicum Thunb.
结果与结论从柔毛水杨梅甲醇提取物的乙酸乙酯部分中分离得到4个五环三萜类化合物和1个甾醇。
4) triterpene
[,trai'tə:pi:n]
五环三萜
1.
Results A new ursane-galactoside was isolated from the rhizomes of Potentilla anserine along with 2 known ursane- and oleanane-type triterpene glucosides.
结果:由JM首次分离纯化的三个化合物单体为五环三萜皂G类成分,其中乌苏烷型半乳糖G-2α,3β,19β-三羟基-12-烯-28-乌苏酸-β-D-吡喃半乳糖G-为新化合物(命名为 JMGII号)。
5) olean-type triterpenoids
五环三萜
1.
Three known olean-type triterpenoids were isolated from the plant Euonymus hederaceus Champ.
运用现代先进分离技术从卫矛科药用植物常春卫矛中分离得到3个已知齐敦果烷型五环三萜,运用质谱、核磁共振、红外光谱和紫外光谱等现代波谱技术,参考相关文献资料确定了化合物的结构,分别为3β-甲氧基-齐敦果-11-酮-18-烯、3,11-二羰基-齐敦果-12-烯和28-羟基-齐敦果-12-烯-3,11-二酮。
6) pentacyclic triterpenoid
五环三萜
1.
There are many oleanane and ursane pentacyclic triterpenoids in nature plants.
乌苏烷型和齐墩果烷型五环三萜在自然界分布广泛,且具有很好的药理活性。
2.
Pentacyclic triterpenoids - oleanolic acid is the main composition of functions of a variety of natural products, belonging to organic Triterpenoid acid, is widely distributed in nature.
五环三萜类化合物——齐墩果酸是多种天然产物的主要功能成分,属于有机三萜酸,在自然界中分布广泛,显示出多种生物活性。
3.
Ursolic acid, as a pentacyclic triterpenoid, is ubiquitous in the plant kingdom and exhibits various biological activities such as anti-tumor, anti-HIV, anti-hepatism, anti-inflammation, anti-diabets and hypoglycemic pharmacological actions.
熊果酸是一个分布广泛、含量丰富的天然五环三萜化合物,具有抗肿瘤、抗HIV病毒、保肝、抗炎、抗糖尿病等多种重要生物活性。
补充资料：三环倍半萜类化合物
分子式：
CAS号：
性质：又称β-丁香醇（β-caryophyllene alcohol），三环倍半萜类化合物。结晶，熔点96℃。是石竹烯在酸催化下发生环化反应所得的产物之一。用于科学研究。
CAS号：
性质：又称β-丁香醇（β-caryophyllene alcohol），三环倍半萜类化合物。结晶，熔点96℃。是石竹烯在酸催化下发生环化反应所得的产物之一。用于科学研究。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条