辽东楤木芽中的一个新三萜皂苷

目的对从辽东木芽中提取的总皂苷进行化学成分的研究。方法通过硅胶柱色谱和制备HPLC等手段分离 ,利用理化性质和光谱方法鉴定。结果得到化合物 (1) ,鉴定为 3 O β D glu copyranosyl (1→ 4 ) β D glucopyranosylechinocysticacid。 结论该化合物为未见文献报道的新化合物 ,命名为木芽皂苷C (congmuyanosideC)。     

辽东楤木芽中的化学成分(I)

目的分离、鉴定辽东木 (Araliaelata(Miq )Seem )芽提取物 (总皂苷 )中的化学成分。方法利用硅胶柱色谱 ,制备高效液相柱色谱进行分离纯化 ,根据理化性质和光谱数据进行结构鉴定。结果得到 5个化合物 ,分别鉴定为congmuyenosideA(1) ,congmuyenosideB(2 ) ,木皂苷Ⅶ(congmunosideⅦ ,3) ,3 O β D glucopyranosyl (1→ 3) α L arabinopyranosylechinocysticacid(4) ,腺苷 (adenosine,5 )。结论化合物 4和 5为首次从该属植物中分离。     

辽东木根皮中的一个新三萜皂苷

从辽东木Ａｒａｌｉａｅｌａｔａ(Ｍｉｑ .)Ｓｅｅｍ .根皮降血糖活性部位中最近又分离得到一个新的三萜皂苷 ,通过理化性质和谱学分析 (ＭＳ、ＮＭＲ)确定了其结构 ,将其命名为辽东木皂苷Ⅶ (ｃｏｎｇ ｍｕｎｏｓｉｄｅⅦ ) [1～ 3] 。结构见图 1。本品为白色无定形粉末 ,Ｌｉｅｂｅｒｍａｎｎ Ｂｕｒ ｃｈａｒｄ反应和Ｍｏｌｉｓｈ反应均为阳性。ＨＲ ＦＡＢＭＳ给出分子式为Ｃ54 Ｈ88Ｏ2 4 (观察值ｍ/ｚ :1 1 43 5 5 83[Ｍ Ｎａ] ,计算值Ｃ54Ｈ88Ｏ2 4 Ｎａ :1 1 43 5 5 64)。正ＥＳＩ ＭＳ给出伪分子离子峰ｍ/ｚ :1 1 43[Ｍ Ｎａ]…     

龙牙Song木根皮中的一个新皂苷

从龙牙木Ａｒａｌｉａｅｌａｔａ(Ｍｉｑ .)Ｓｅｅｍ .根皮中最近又分离得到一个新的三萜皂苷 ,通过理化和谱学分析 (ＭＳ、ＮＭＲ) ,确定了其结构 ,将其命名为辽宁木皂苷ⅩⅥ (图 1 )。Ｆｉｇ .1　Ｃｏｎｇｍｕｎｏｓｉｄｅ ⅩⅥ　　白色无定形粉末 ,Ｌｉｅｂｅｒｍａｎｎ Ｂｕｒｃｈａｒｄ反应和Ｍｏｌｉｓｈ反应均为阳性。正ＥＳＩ ＭＳ给出伪分子离子峰ｍ/ｚ 1 435[Ｍ Ｎａ] ,负ＥＳＩ ＭＳ给出伪分子离子峰ｍ/ｚ 1 41 1 [Ｍ -Ｈ]- 。1 Ｈ ＮＭＲ中有 6个糖端基信号 :6 2 0 (1Ｈ ,ｄ ,Ｊ =8 0Ｈｚ,6 1 3(ｓ) ,5 71 (1Ｈ ,ｄ ,Ｊ =8…     

HPLC法测定辽东楤木根皮中木皂苷C的含量

目的建立HPLC法测定辽东木根皮中木皂苷C含量的方法。方法固定相为DiamonsinC18柱(250 mm×4.6 mm,5μm),流动相为甲醇水磷酸(体积比为67.0∶33.0∶0.2),流速为0.8 mL.min-1,检测波长为206 nm,柱温为30℃。结果木皂苷C在20~40μg内呈良好的线性关系(r=0.999 9),平均回收率为99.7%,RSD为3.2%(n=6)。结论可用于木皂苷C的定量分析。     

楤木皂苷抗四氯化碳致大鼠肝纤维化作用

目的观察楤木皂苷对四氯化碳致大鼠肝纤维化的保护作用。方法采用质量分数为40%的四氯化碳皮下注射诱导大鼠肝纤维化模型,MASSON染色观察肝组织病理学改变,采集血清检测肝功能及透明质酸(hyaluronic acid,HA)、层黏连蛋白(laminin,LN)、三型胶原蛋白(typesⅢ-collagen,COI-Ⅲ)含量的变化。结果楤木皂苷可抑制肝假小叶的形成和胶原纤维沉积,改善肝功能,降低血清中HA、LN、COI-Ⅲ的含量(P<0.05)。结论楤木皂苷有显著的抗肝纤维化的作用。     

楤木化学成分的研究

目的 研究楤木的化学成分.方法 采用硅胶柱层析、Sephadex LH-20、ODS柱层析、半制备型高效液相色谱等分离方法进行分离纯化,经理化性质和波谱数据分析鉴定化合物结构.结果 分离鉴定了4个三萜皂苷类化合物,分别鉴定为elatoside K methyl ester(Ⅰ)、araloside Amethyl ester(Ⅱ)、pseudoginsenoside RTl butyl ester (Ⅲ)和太白楤木皂苷Ⅰ(Ⅳ).结论 化合物Ⅰ为新化合物,化合物Ⅱ～Ⅳ均为首次从该植物中分离得到.     

辽东木中的新化合物

辽东木〔Ａｒａｌｉａｅｌａｔａ（Ｍｉｑ．）Ｓｅｅｍ〕系五加科木属植物,主要分布于我国的东北,主要化学成分为以齐墩果酸为苷元的三萜皂苷,从其降糖活性部位正丁醇层提取物中分离得到一系列化合物,其中之一鉴定为新化合物,命名为木皂苷Ｓ１（ａｒａｌｏｓｉ...     

HPLC法测定辽东楤木根皮中楤木皂苷C的含量

目的建立HPLC法测定辽东楤木根皮中楤木皂苷C含量的方法.方法 固定相为Diamonsin C18柱(250 mm×4.6 mm,5 μm),流动相为甲醇-水-磷酸(体积比为67.0∶33.0∶0.2),流速为0.8 mL·min-1,检测波长为206 nm,柱温为30 ℃.结果楤木皂苷C在20～40 μg内呈良好的线性关系(r=0.999 9),平均回收率为99.7%,RSD为3.2%(n=6).结论可用于楤木皂苷C的定量分析.     

辽东楤木芽中的一个新三萜皂苷

目的对从辽东木芽中提取的总皂苷进行化学成分的研究。方法通过硅胶柱色谱和制备HPLC等手段分离,利用理化性质和光谱方法鉴定。结果得到化合物1,鉴定为3O[βDglu-copyranosyl(1→3)βDglucopyranosyl]caulophyllogenin。结论该化合物为未见文献报道的新化合物,命名为木芽皂苷Ⅰ(congmuyanosideⅠ)。     

知母中三个新的呋甾皂苷

从中药知母（ＡｎｅｍａｒｒｈｅｎａａｓｐｈｏｄｅｌｏｉｄｅｓＢｇｅ．）中分离出三种新的呋甾皂苷，初步鉴定为（２５Ｓ）－２６－Ｏ－β－Ｄ－葡萄糖－５β－呋甾－２０（２２）－双键－３β，２６－二醇－３－Ｏ－β－Ｄ－葡萄糖基（１→２）〔β－Ｄ－葡萄糖基（１→３）〕－β－Ｄ－葡萄糖基（１→４）－β－Ｄ－半乳糖苷（１），（２５Ｓ）－２６－Ｏ－β－Ｄ－葡萄糖基－２２－羟基－５β－呋甾－３β，２６－二醇－３－Ｏ－β－Ｄ－葡萄糖基（１→２）〔β－Ｄ－葡萄糖基（１→３）〕－β－Ｄ－葡萄糖基（１→４）－β－Ｄ－半乳糖苷（２），（２５Ｓ）－２６－Ｏ－β－Ｄ－葡萄糖基－２２－甲氧基－５β－呋甾－３β，２６－二醇－３－Ｏ－β－Ｄ－葡萄糖基（１→２）〔β－Ｄ－葡萄糖基（１→３）〕－β－Ｄ－葡萄糖基（１→４）－β－Ｄ－半乳糖苷（３）．分别命名为ｔｉｍｏｓａｐｏｎｉｎ－ＢⅣ，ｔｉｍｏ－ｓａｐｏｎｉｎ－ＢⅤ，ｔｉｍｏｓａｐｏｎｉｎ－ＢⅥ．     

知母中新的甾体皂苷

从中药知母（ＡｎｅｍａｒｈｅｎａａｓｐｈｏｄｅｌｏｉｄｅｓＢｇｅ．）中分离出一种新的呋甾皂苷，用化学和光谱方法确定其结构为：（２５Ｓ） ２６ Ｏ β Ｄ 吡喃葡萄糖基 ５β 呋甾 ２０（２２） 烯 ２β，３β ２６ 三醇 ３ Ｏ β Ｄ 吡喃葡萄糖基（１→２） β Ｄ 吡喃半乳糖苷，命名为知母皂苷Ｄ．     

用核磁共振技术研究日本续断皂苷E_2的结构

从日本续断ＤｉｐｓａｃｕｓｊａｐｏｎｉｃｕｓＭｉｑ．根的乙醇提取物中得到一个新三萜皂苷（５糖苷），命名为日本续断皂苷Ｅ２（ｊａｐｏｎｄｉｐｓａｐｏｎｉｎＥ２）．用化学方法及１ＨＮＭＲ，１３ＣＮＭＲ，１Ｈ－１ＨＣＯＳＹ，一维多重接力ＣＯＳＹ和三重共振ＮＯＥ差谱等方法，鉴定其结构为３－Ｏ－〔β－Ｄ－吡喃葡萄糖（１→４）〕〔α－Ｌ－吡喃鼠李糖（１→３）〕－β－Ｄ－吡喃葡萄糖（１→３）－α－Ｌ－吡喃鼠李鼠（１→２）－α－Ｌ－吡喃阿拉伯糖－齐墩果酸     

玄参根中的一个新三萜四糖苷(英文)

在中药玄参提取分离的过程中,分离得到1个新三萜四糖苷3β-O-(β-D-xylopyranosyl-(1→2)-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl-(1→3)]-β-D-fucopyranosyl-11,13(18)diene-olean-23α,28 dio1(1)和3个已知的苯乙醇苷(2～4),化合物2、3均为首次从该属植物中分离得到。通过1D,2D NMR和HR-ESI-MS等光谱数据阐明了化合物1的结构。     

加拿大产西洋参茎叶中的一个新三萜皂苷

从加拿大产西洋参（ＰａｎａｘｑｕｉｎｑｕｅｆｏｌｉｕｍＬ．）的茎叶中分离得到一种新达玛烷型三萜皂苷，利用理化性质和光谱数据，鉴定为３－Ｏ－〔β－Ｄ－吡喃葡萄糖基－（１－２）－β－Ｄ－吡喃葡萄糖基〕－１２－羟基达玛－２３，２５－二烯－２０－β－Ｄ－吡喃葡萄糖苷，命名为西洋参皂苷Ｌ１．     

Isolation and characterization of cytotoxic saponin chloromaloside A from Chlorophytum malayense

A cytotoxic steroidal glycoside was isolated from Chlorophytum malayense Ridley and its structure was characterized as a known compound, neohecogenin 3-O-beta-D-glucopyranosyl(1-->2)-[beta-D-xylopyranosyl(1-->3)]-beta-D- glucopyranosyl(1-->4)-beta-D-galactopyranoside (chloromaloside A). The structural identification was performed using 2D-NMR and LC/MS/MS analysis. The previous, erroneously assigned 1H-NMR spectral data were revised whereas the published 13C-NMR spectral assignments were confirmed. This compound showed in vitro cytotoxicity against several human cancer cell lines.     

A novel spinosin derivative from Semen Ziziphi Spinosae

A novel spinosin derivative, 6?-(4?'-O-β-D-glucopyranosyl)-vanilloyl spinosin (1) was isolated from the methanol extract of Semen Ziziphi Spinosae, together with five known flavonoids, swertish, spinosin, 6?-feruloylspinosin, isospinosin and kaempferol 3-O-α-L-rhamnopyranosyl-(1 → 2)-O-[O-α-L-rhamnopyranosyl-(1 → 6)]-β-D-glucopyranoside, and two alkanoids, zizyphusine and 6-(2',3'-dihydroxyl-4'-hydroxymethyl-tetrahydro-furan-1'-yl)-cyclopentene[c]pyrrole-1,3-diol. The structure of compound 1 was elucidated by spectroscopic methods including UV, IR, ESI-TOF-MS, 1D, and 2D NMR techniques.     

朝鲜白头翁的三萜皂苷成分研究

目的　研究朝鲜白头翁［Pulsatilla cernua(Thunb.) Bercht. et Opiz.］ 根茎的化学成分。 方法　朝鲜白头翁根茎的乙醇提取物经大孔树脂、硅胶、ODS柱以及HPLC分离得到6个化合物, 通过波谱(1H,¹³CNMR,FAB-MS等)分析和化学方法进行结构鉴定。结果　6个化合物分别被鉴定为pulsatilla saponin A(1), 常春藤皂苷元3-O-β-D-吡喃葡糖(1→3)-α-L-吡喃鼠李糖(1→2)-α-L-吡喃阿拉伯糖苷(2), pulsatilla saponin D(3), dipsacoside B(4), 3-O-α-L-吡喃鼠李糖(1→2)［β-D-吡喃葡糖(1→4)］-α-L-吡喃阿拉伯糖常春藤皂苷元28-O-β-D-吡喃葡糖酯苷(5)和胡萝卜苷(6)。 结论　5为新化合物, 命名为朝鲜白头翁丙苷(cernuoside C)。 2,4和6为首次从朝鲜白头翁中分离获得。     

Metabolite profiling of the leaves of the Brazilian folk medicine Sideroxylon obtusifolium

Sideroxylon obtusifolium (Roem. & Schult.) T. D. Penn. (family Sapotaceae) is a tree native to Central and South America. Infusions of the bark and the leaves are used in Brazilian folk medicine as an anti-inflammatory remedy. However, information on the constituents of S. obtusifolium remains scarce, and only common pentacyclic triterpenoids have been previously reported. HPLC-DAD/MS analyses revealed that saponins and flavonoids were the main constituents of the leaves. From the butanol-soluble fraction of an ethanolic extract, a total of four saponins and ten flavonol glycosides were isolated by a combination of chromatographic methods including Sephadex LH-20, MPLC, and HPLC. Their structures were established by acid hydrolysis and spectroscopic methods, mainly MS (n), 1D and 2D NMR experiments. The compounds include the new triterpene glycoside 3-O-( β-D-glucopyranosyl)-protobassic acid 28-O- β-D-apiofuranosyl-(1 → 3)-O-[O- β-D-apiofuranosyl-(1 → 3)- β-D-xylopyranosyl-(1 → 4)]-O- α-L-rhamnopyranosyl-(1 → 2)- α-L-arabinopyranosyl ester ( 1), as well as the new flavonol glycosides, quercetin-3-O-(O- α-L-rhamnopyranosyl-(1→ 2)-O-[ β-D-glucopyranosyl-(1 → 3)]- β-D-galactopyranoside) ( 6) and kaempferol-3-O-(O- α-L-rhamnopyranosyl-(1 → 2)-O-[ β-D-glucopyranosyl-(1 → 3)]- β-D-galactopyranoside) ( 8). In addition, catechin and a glycerogalactolipid, gingerglycolipid A, were obtained from the ethyl acetate-soluble fraction. The isolated compounds could be used in the future as chemical markers for quality control of this herbal drug.     

Saponins from the roots ofPulsatilla koreana

From the roots ofPulsatilla koreana, three monodesmosides(pulsatilla saponins A, B and D) and two bisdesmosides(pulsatilla saponins F and H) were isolated. The structure of these saponins have been determined as hederagenin 3-O-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranoside(A), hederagenin 3-O-β-D-glucopyranosyl(1→4)-α-L-arabinopyranoside(B), hederagenin 3-O-α-L-rhamnopyranosyl (1→2)-[β-D-glucopyranosyl(1→4)]-α-L-arabinopyranoside(D), 3-O-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl hederagenin 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester (F) and 3-O-α-L-rhamnopyranosyl(1→2)-[β-D-glucopyranosyl(1→4)]-α-L-arabinopyranosyl hederagenin 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester(H) on the basis of chemical and spectral studies. Pulsatilla saponin B is the first report of its presence in plants but saponins A, D, F, and H have recently been isolated from the same genusP. cernua.