云南红景天的化学成分

从云南红景天(Rhodiola yunnanesis)根茎中分出15个单体成分(Ⅰ～ⅩⅤ),其中12个(Ⅰ～ⅩⅡ)分别鉴定为:黑五味子单体甙(schizandriside, ∠)、1-表没食子儿茶素-3-没食子酸酯(1-epigallocatechin-3-gallate, Ⅱ)、1-表儿茶素(1-epicatechin, Ⅲ)、大黄酚(chnysophanol, Ⅳ)、β-胡萝卜甙(daucosterot, Ⅴ)、β-谷甾醇(β-sitostecol, Ⅵ)、阿魏酸二十八烷醇酯(1-octacosanly ferulate, Ⅶ)、没食子酸(gallic acid, Ⅷ)、二十八烷醇乙酸酯(1-octasonaly acetate, Ⅸ)、蜡酸二十六烷醇酯(1-hexacosanyl cerotate, Ⅹ)、蜡酸(cerotic acid, Ⅺ)、二十六烷醇(1-hexacosanol, ⅩⅡ)。有趣的是首次从本属植物中分离出木脂素类(Ⅰ)、黄烷醇类(Ⅱ、Ⅲ)以及蒽醌类(Ⅳ)成分。     

帕里红景天的化学成分研究

从帕里红景天根茎的石油醚和乙醇提取部分共分得１４种结晶性化合物,经光谱分析和化学反应,分别鉴定为二十二醇、二十六酸、十九醇、β－谷甾醇、二十九醇、红景天甙、麦芽糖、棉皮素－８－葡萄糖甙、胡萝卜甙、酪醇、咖啡酸、没食子酸、形花内酯和新化合物帕里甙。     

红景天属植物化学成分研究概述

本文据国内外近年来的研究成果,概述了红景天属植物的化学成分的分布、特有化学成分的结构、理化常数以及数种植物的制剂、红景天甙等的生理活性,并对其规律作了初步的归纳、总结。     

高山红景天细胞悬浮培养中pH值对红景天甙胞外释放及细胞活性…

高山红景天细胞悬浮培养中,通过降低培养基ＰＨ值能有效地诱导培养细胞中红景天甙的胞外释放。红景天甙的跨膜运输是一个有与Ｈ对运的动态过程,培养基ＰＨ值决定了红景天甙在胞内外含量的分布。细胞组织在ＰＨ值大于３的培养基中处理３ｈ以内,对细胞活性的影响不大。将诱导释放处理过的细胞转入到新鲜的生产培养基中,细胞仍具有合成红景天甙的能力。     

长鞭红景天中一个新的葡萄糖甙

从云南怒江产的长鞭红景天(Rhodiola fastigiata (Hook. f. et Thoms.) S. H. Fu)根茎中分离得到13个化合物,它们的结构通过波谱和化学方法得到鉴定.其中,化合物1被鉴定为新的葡萄糖甙(2-O-β-D-吡喃葡糖基-3-甲基-戊酸甲酯),命名为长鞭红景天素甲,化合物2和 5～9首次从该植物中分离得到.     

长鞭红景天中一个新的葡萄糖甙

从云南怒江产的长鞭红景天 (Rhodiolafastigiata (Hook .f.etThoms.)S .H .Fu)根茎中分离得到 13个化合物 ,它们的结构通过波谱和化学方法得到鉴定。其中 ,化合物 1被鉴定为新的葡萄糖甙 (2_O_β_D_吡喃葡糖基_3_甲基_戊酸甲酯 ) ,命名为长鞭红景天素甲 ,化合物 2和 5～ 9首次从该植物中分离得到     

喜马红景天的化学成分

喜马红景天Rhodiola himalensis(D. Don)S. H. Fu为景天科(Crassulaceae)植物,生长在海拔3000—4800米的高山流石滩和杂丛林下。广泛分布于西藏的吉隆、亚东、林周等地,在我国的云南和四川西部以及尼泊尔、锡金、不丹等地也有分布。此属植物的化学成分是苯酚类、黄酮类、香豆精、蒽醌、有机酸、甾醇和鞣质等。红景     

高原红景天

红景天,红满天 在夏秋的高原,当你在满是碎石的山岗上,看见一片片火红火红的茸垫般景观,那你一定是看到了高原的红景天! 提起红景天,可能有不少人知道或是曾经听说过,它们是一类有价值的药用植物。可是,红景天是什么样子,它们是如何在自然界中生存繁衍的呢?恐怕了解的人不会太多。 其实,红景天并不是指一种植物,而是指景天科红景天属的一类植物。这类植物在全世界共有90多种,主要分布在北半球的海拔3000—5600米的高山碎石带、沟谷水边、河滩湿地、高寒地带等处。     

圣地红景天的成分研究

圣地红景天(Rhodiola sacra)为景天科(Crassulaceae)植物,它是西藏民间常用中草药之一。我们首次从该植物的根茎中分得13种化合物,经化学方法和光谱数据确定为:咖啡酸(caffeic acid),伞形花内酯(ambelliferone),酪醇(tyrosal),没食子酸(gallic acid),没食子酸乙酯(gallic acid et-hyl ester),山奈酚(kaempfer01),β-谷甾醇(β-sitosterol),胡萝卜甾醇(daucosterol),红景天甙(rhodioloside or salidroside)。其余4个化合物有待进一步鉴定。     

大花红景天正丁醇提取物的化学成分研究

从云南产大花红景天（Rhodiola crenulata（Hook．f.et．Thoms）．S．H．Fu）植物的正丁醇提取物中分离得到五个化合物,经光谱和波谱解析,分别为大花红天素、酪醇、红景天苷、德钦红景天苷和草质素7-O-（3″-O-β-D-葡萄糖基）-α-L-鼠李糖苷,其中德钦红景天苷为首次在大花红景天中发现的黄酮类化合物。     

Studies on the Chemical Constituents of Rhodiola fastigita S. H. Fu

Rhodiola fastigita is an alpine plant growing at 3300--5400 m above sea level. Seven crystal, compounds were isolated from the rhizome of this plant. They were identified as β- sitosterol, β-sitosterol-3-β-D-galactoside, daucosterol, gallic acid, gallic acid ethyl ester, p-tyrosol and herbacetin-8-arabinoside by IR, MS, H-NMR and chemical method. Daucosterol, β-sitosterol- 3-β-D-galactoside and gallic acid ethyl ester were obtained from the genus Rhodiola L. for the first time.     

Studies on Chemical Constituents of Rhodiola phariensis (H. Ohla) S. H. Fu

Rhodiola phariensis (H. Ohla) S. H. Fu is native to China. This species is distributed in Xizang of China. So far no datum of its chemical constituents has been recorded. Fourteen crystalline substances were isolated from the petroleum ether and ethanol extractions of the rhizome of this plant. Thirteen of them were identified as 1-docosanol, cerotic acid, 1-nonadecanol, β-sitosterol, 1-hepacosanol, salidroside, maltose, gossypin, daucosterol, tyrosol, caffeic acid, gallic acid, umbelliferone by chemical and spectral (IR, 1H-NMR, 13C- NMR, and MS) analysis. Ⅹ was a new compound named pharienside. It' s structure was elucidated as p-O-galloy salidroside by IR, 1H-NMR, 13C-NMR, MS and chemical reactions. Gossypin was obtained from the genus Rhodiola L. for the first time.     

Volatiles from rhizomes of Rhodiola rosea L

Terpenes and aroma volatiles from rhizomes of Rhodiola rosea L. from Norway have been isolated by both steam distillation and headspace solid-phase micro-extraction coupled with gas chromatography and mass spectrometry analysis. The dried rhizomes contained 0.05% essential oil with the main chemical classes: monoterpene hydrocarbons (25.40%), monoterpene alcohols (23.61%) and straight chain aliphatic alcohols (37.54%). n-Decanol (30.38%), geraniol (12.49%) and 1,4-p-menthadien-7-ol (5.10%) were the most abundant volatiles detected in the essential oil, and a total of 86 compounds were identified in both the SD and HS-SPME samples. Geraniol was identified as the most important rose-like odour compound besides geranyl formate, geranyl acetate, benzyl alcohol and phenylethyl alcohol. Floral notes such as linalool and its oxides, nonanal, decanal, nerol and cinnamyl alcohol highlight the flowery scent of rose root rhizomes.     

柴胡红景天化学成分的研究

采用正相与反相硅胶柱色谱和薄层色谱分离纯化的方法,从景天科红景天属植物柴胡红景天(Rhodiola bupleuroides)根茎70%乙醇提取物的乙酸乙酯萃取部分中分离得到7个化合物,用光谱分析(UV,IR,MS,1H-NMR,13C-NMR)和化学反应鉴定化合物分别为:没食子酸(1)、山奈酚-7-O-α-L-吡喃鼠李糖苷(2)、草质素-7-O(3″-O-β-D-葡萄糖基)-α-L鼠李糖苷(3)、槲皮素(4)、丁香酸(5)、3,5-二甲氧基-4-羟基-苯甲酸-7-O-β-D-葡萄糖苷(6)、β-谷甾醇(7).以上化合物均为首次从该植物中分离得到,其中化合物5和6为首次从红景天属植物中发现.     

玫瑰红景天化学成分研究

采用大孔吸附树脂、硅胶柱、ADS-5C反相柱和制备HPLC色谱技术对新疆产玫瑰红景天根茎中的植物化学成分进行提取分离和纯化研究,从中分离得到15个化合物。通过理化方法及1H、13C NMR等方法鉴定为:对-O-β-吡喃葡萄糖基-苯-2-丁酮(1)、6’-O-没食子酰-红景天苷(2)、对-O-β-吡喃葡萄糖基-苯丙烯酸(3)、7-甲氧基香豆素(4)、表没食子儿茶素-3-没食子酸酯(5)、苯乙基-6-O-β-葡萄糖苷(6)、对羟基苯甲酸(7)、红景天苷(8)、肉桂醇-6’-O-α-吡喃阿拉伯糖基-O-β-吡喃葡萄弹苷(9)、肉桂醇-6’-O-α-吡喃木糖-O-β-吡喃葡萄弹苷(10)、肉桂醇-6’-O-α-呋喃阿拉伯糖基-O-β-吡喃葡萄弹苷(11)、肉桂醇-O-β-D-吡喃葡萄弹苷(12)、对-羟基-苯乙醇(13)、3,7-二甲基-2,6-二烯-1,4-二辛醇(14)、3,7-二甲基-2,6-二烯-1,4-二辛醇-O-β-吡喃葡萄糖苷(15)。其中化合物1～4为首次在玫瑰红景天发现。     

救心草的化学成分研究

采用柱色谱方法,从救心草75%乙醇提取物的乙酸乙酯和正丁醇萃取部位分离得到8个化合物。经理化性质和波谱方法鉴定为β-谷甾醇(1)、没食子酸(2)、没食子酸乙酯(3)、槲皮素(4)、山奈酚(5)、杨梅素(6)、杨梅素-3-O-β-D-葡萄糖苷(7)、山奈酚-7-O-β-D-葡萄糖苷(8)。其中化合物3、5、8为首次从该植物中分得。     

Comparative phytochemical characterization of three Rhodiola species

In comparison to the well-recognized adaptogenic herb Rhodiola rosea, phytochemical constituents of two other Rhodiola species (R. heterodonta and R. semenovii) were elucidated and characterized. Two major phytochemical groups; phenolic and/or cyanogenic glycosides and proanthocyanidins, were isolated and identified in the three species. Chemical similarities among the three species were observed; however, each species displayed differences in phytochemical constituents. R. heterodonta contained a newly detected phenylethanoid glycoside, heterodontoside, in addition to the known compounds tyrosol, viridoside, salidroside, and rhodiocyanoside A. Both R. heterodonta and R. rosea contained phenylethanoid/propanoid compounds that were not detected in R. semenovii. For R. semenovii, the cyanogenic glucosides rhodiocyanoside A and lotaustralin were detected. Although the three species have proanthocyanidins composed of (-)-epigallocatechin and its 3-O-gallate esters in common, the degree of polymerization greatly differed between them. In contrast to R. heterodonta and R. semenovii, R. rosea has higher molecular weight polymeric proanthocyanidins. This study resulted in the identification and isolation of phytochemical constituents for direct cross-comparison between three Rhodiola species of medicinal and pharmacological value.     

4种红景天植物的组织培养研究

以大花红景天、云南红景天、长鞭红景天和库页红景天的茎和叶为外植体进行组织培养,结果表明：大花红景天以茎为外植体诱导芽效果最好,其它3种红景天以叶为外植体诱导芽效果最好。云南红景天和长鞭红景天适合的芽诱导激素组合是0．1mg／L NAA和2．5mg／L 6-BA的组合,在该激素水平下两种红景天的出芽频率分别达到71％和84％;大花红景天和库叶红景天适合的芽诱导激素组合是0．5mg／L NAA和2．5mg／L 6-BA的组合,在该激素水平下两种红景天的出芽频率均达到80％。长鞭红景天和库叶红景天在添加IBA的培养基上容易生根形成完整植株,生根率分别达到87％和73％;经过炼苗后,长鞭红景天再生苗能够成功移栽,成活率达66％。