盾叶薯蓣中新甾体皂苷的研究

为了研究盾叶薯蓣的水溶性化学成分, 用溶剂提取、色谱分离等方法从盾叶薯蓣的水溶液中分离到一个新甾体皂苷, 经¹H NMR、¹³C NMR、¹³⁵DEPT、HMQC、HMBC和TOCSY谱鉴定, 该化合物的结构为: (25R)-26- O-(β-D-glucopyranosyl)-furost-5-en-3b, 16, 20, 26-tetraol-22-seco-3-O-b-D-glucopyranosyl-(1→3)-b-D-glucopyranosyl- (1→4)-[a-L-rhamnopyranosyl-(1→2)]-b-D-glucopyranoside, 命名为zingiberenin F (1)。该化合物为一新甾体皂苷化合物, 该骨架甾体皂苷在薯蓣科中为首次报道。     

胡芦巴来源的甾体皂苷研究进展

中药胡芦巴是豆科一年生草本植物胡芦巴（Trigonellafoenum—graecumL．）的干燥种子,富含甾体皂苷。本实验室对胡芦巴中甾体皂苷进行了系统研究,包括原生呋甾皂苷及其酶解产物的分离鉴定、利用液质联用技术对甾体皂苷类成分的快速表征与结构分析,以及利用超临界流体色谱技术对螺甾皂苷C-25R／S异构体的分析、制备分离等。本文对本实验室相关研究进行总结,以期有助于胡芦巴的开发与利用,也为今后中药的化学成分研究工作提供借鉴。     

甾体皂苷研究进展

甾体皂苷 (steroidalsaponins)是天然产物中一类重要的化学成分 ,大多都具有一定的生理活性 ,在天然产物化学研究中日趋活跃。据不完全统计 ,超过 90个科的植物含有甾体皂苷 ,尤以单子叶植物的百合科、石蒜科、薯蓣科和龙舌兰科等植物报道最多。由于含甾体皂苷成分的动植物药有相当的疗效。所以 ,人们在应用和研究方面越来越广泛。例如 :Dracaenadraco被用于抗腹泻和止血[1] ,蒺藜用于治疗眼病、浮肿、腹胀、高血压、皮癣和气管炎[2 ] ,Chlorophytummalayense对肿瘤有潜在的细胞毒活性[3 ] ,Agaveamericana有通便和利尿的作用[4] ,Solanum…     

吉祥草中一个新的呋甾皂苷

对云南产吉祥草的地上部分进行了植物化学研究。针对乙酸乙酯萃取后的水溶液,利用一系列色谱方法分离得到了一个新呋甾皂苷和四个已知化合物。通过1D NMR、2D NMR,IR和HRESI-MS的方法对分离得到化合物进行了结构鉴定,分别为26-O-β-D-glucopyranosyl-（25S）-5β-furost-20（22）-en-1α,3β,26-triol-1-O-α-L-arabinopyranosyl-（1→2）-[α-Lrhamnopyranosyl]-3-O-α-L-rhamnopyranoside（1）,（1β,3β,16β,22S）-cholest-5-en-1,3,16,22-tetrol-1,16-di-（β-D-glucopyranoside）（2）,diosgenin（3）,β-sitosterol（4）,ecdysterone（5）。     

C21甾体皂苷研究

甾体化合物是一类具有生物活性的天然产物,其中C21甾体皂苷生物活性较显著,本文对C21甾体皂苷分布状态、提取分离、结构鉴定和药理活性研究进行总结。     

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．     

蒺藜中甾体皂苷成分的研究进展

甾体皂苷是中药蒺藜中含有一种的重要生物活性物质，本文对近年来蒺藜甾体皂苷的化学成分及药理作用的研究作一综述。     

知母中的两种新呋甾皂苷

目的研究知母根茎的化学成分。方法采用水煎提取、大孔吸附树脂SP825柱色谱、反相C₁₈柱色谱等进行分离，并通过化学手段和光谱分析(FAB-MS，¹H NMR，13C NMR，¹H-¹H COSY)鉴定其化学结构。结果从知母根茎中分离得到6种甾体皂苷，分别鉴定为：(25S)-26-O-β-D-吡喃葡糖基-22-羟基-5β-呋甾-2β，3β，26-三醇-3-O-β-D-吡喃葡糖基-(1→2)-β-D-吡喃半乳糖苷(知母皂苷N，1)，知母皂苷E_l(2)，(25S)-26-O-β-D-吡喃葡糖基-22-甲氧基-5β-呋甾-2β，3β，26-三醇-3-O-β-D-吡喃葡糖基-(1→2)-β-D-吡喃半乳糖苷(知母皂苷O，3)，知母皂苷E₂(4)，(25R)-26-O-β-D-吡喃葡糖基-22-羟基-5α-呋甾-2α，3β，26-三醇-3-O-β-D-吡喃葡糖基-(1→2)-［β-D-吡喃木糖基-(1→3)］-β-D-吡喃葡糖基-(1→4)-β-D-吡喃半乳糖苷(purpureagitosid，5)，marcogenin-3-O-β-D-glucopyranosyl-(1→2)-β-D-galactopyranoside (6)。结论化合物1和3为新化合物，命名为知母皂苷N和知母皂苷O，化合物5为首次从知母中分离得到。     

胡芦巴皂苷Ⅷ的结构鉴定

目的研究中国产胡芦巴Trigonella foenum-graecum L.种子的化学成分.方法采用硅胶色谱柱进行分离,通过物理、化学和光谱学方法鉴定化合物的结构.结果分离得到一甾体皂苷,命名为胡芦巴皂苷VIII,鉴定其结构为26-O-β-D-吡喃葡糖基-25(R)-5α-呋甾烷-20(22)-烯-2α,3β,26-三醇-3-O-β-D-吡喃木糖基(1→6)-β-D-吡喃葡糖苷.结论胡芦巴皂苷VIII为新化合物.     

小根蒜甾体皂苷类成分的分离鉴定及抗癌活性

目的对小根蒜中甾体皂苷类成分进行分离和结构鉴定,并对得到的化合物进行体外抗癌活性评价.方法使用大孔吸附树脂、硅胶、ODS柱色谱及制备高效液相色谱等方法,通过化合物的理化性质及各种光谱技术鉴定化合物的结构.采用MTT法测定化合物体外抗癌活性.结果从小根蒜60%(φ)乙醇提取物中分离得到8个甾体皂苷类化合物,分别鉴定为薤白皂苷B(1)、薤白皂苷C(2)、薤白皂苷E(3)、(22S)-胆甾-5-烯-1β,3β,16β,22-羟基-1-氧-α-L-鼠李吡喃糖基-16-氧-β-D-葡萄吡喃糖苷(4)、(25R)-26-氧-β-D-葡萄吡喃糖基-22-羟基-呋甾-5(6)-烯-3β,26-二醇-3-氧-β-D-葡萄吡喃糖基(1→2)[β-D-葡萄吡喃糖基(1→3)]-β-D-葡萄吡喃糖基(1→4)-β-D-半乳吡喃糖苷(5)、薤白皂苷F(6)、薤白皂苷G(7)、(25R)-26-氧-β-D-葡萄吡喃糖基-22-羟基-5β-呋甾-3β,26-二醇-3-氧-β-D-葡萄吡喃糖基(1→2)-β-D-半乳吡喃糖苷(8).化合物2、5、8在25μg·mL-1的质量浓度下可以明显地抑制SF-268和NCI-H460肿瘤细胞的生长.结论化合物8为从本属植物中首次分离得到,化合物4、5为首次从中药小根蒜中分离得到,化合物2、5、8有明显的体外抗癌作用.     

A new cycloartane glycoside fromcamptosorus sibiricus rupr

A new cycloartane glycoside was isolated from the dried whole herbs of Camptosorus sibiricus Rupr By means of chemical (hydrolysis) and spectroscopic methods (IR, 1D, and 2D NMR, ESI-MS), the structure was established as 3beta, 7beta, 24beta, 25, 30-pentahydroxycycloartane-3-omicron-beta-D-glucopyranoside-24-omicron-beta-D-glucopyranoside (1).     

New sesquiterpenoid glycoside and phenylpropanoid glycosides from the tuber of Ophiopogon japonicus

A new sesquiterpenoid glycoside, cryptomeridiol 11-O-β-d-xylopyranosyl-(1→6)-β-d- glucopyranoside (1), two new phenylpropanoid glycosides, 3,4-dihydroxy-allylbenzene 3-O-β-d-glucopyranosyl-4-O-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside (2), and 3,4,5-trihydroxy-allylbenzene 3-O-β-d-glucopyranosyl-4-O-β-d-glucopyranoside (3), along with four known phenylpropanoid glycosides (4–7), were isolated from the tuber of Ophiopogon japonicus. Compounds 4–7 were obtained from the genus Ophiopogon for the first time. Their structures were elucidated by spectroscopic methods, including 1D and 2D NMR and HR-ESI-MS.     

二苯乙烯苷的体外稳定性研究

目的 研究二苯乙烯苷体外稳定性的特征.方法 采用高效液相色谱(HPLC)法测定二苯乙烯苷在模拟空腹胃液、模拟进食胃液、模拟小肠液及光照条件下的稳定性.结果 体外稳定性实验结果显示,二苯乙烯苷在模拟空腹胃液和模拟小肠液中6 h内分别降解了38.6％和49.5％,光照条件下8 h内降解了61.2％.结论 二苯乙烯苷的稳定性...     

A new lignan glycoside from Trigonostemon heterophyllus

Phytochemical investigation on the stems of Trigonostemonheterophyllus led to the isolation of a new lariciresinol-based lignan glycoside, trigonoheteran (1), together with a known lignan glycoside, aviculin (2). Their structures were elucidated by spectroscopic methods including 1D and 2D NMR (HMQC, ¹H–¹H COSY, HMBC, and NOESY).     

A new sterol glycoside from Securidaca inappendiculata

From the roots of Securidaca inappendiculata, one new sterol glycoside securisteroside (1) has been isolated, along with two known sterols, spinasterol (2) and 3-O-β-D-glucopyranosyl-spinasterol (3). The new sterol was characterized by chemical and spectrometric methods, including EIMS, FABMS and one- and two-dimensional NMR experiments.     

A new cembrane glycoside in Asterothamnus centrali-asiaticus from Gobi desert

A new cembrane glycoside, nephthenol 15-O-β-d-quinovoside, was isolated from the aerial parts of Asterothamnus centrali-asiaticus. Its structure was elucidated by 1D and 2D NMR spectroscopic analysis, as well as by mass spectrometry. This is the first report of the occurrence of a cembrane glycoside in vascular plants.     

A new acylated flavonol glycoside from Derris triofoliata

A new acylated flavonol glycoside, kaempferol 3-O-[(6″″-feruloyl)-β-D-glucopyranosyl-(1 → 3)]-[α-L-rhamnopyranosyl-(1 → 6)]-β-D-glucopyranoside and two known cyclolignan glycosides, (+)-lyoniresinol-3α-O-β-D-glucopyranoside and ( ? )-lyoniresinol-3α-O-β-D-glucopyranoside were isolated from n-BuOH extracts of the aerial parts of Derris triofoliata, their structures were determined from spectroscopic and chemical evidences.     

Catechin glycoside fromUlmus davidiana

Catechin and catechin glycoside named uldavioside A were isolated from the Korean folk medicineUlmus davidiana. Based on chemical and physicochemical evidences, their structure have been determined as (+)-catechin (1) and (+)-catechin-5-O-β-D-apiofuranoside (2).     

A new pregnane glycoside and oligosaccharide from Parabarium huaitingii

Two new compounds, along with two known compounds, were isolated from the barks of Parabarium huaitingii, and their structures were determined as 5α-pregn-6-ene-3β,17α,20(S)-triol-20-O-β-d-digitoxopyranoside (1), cymaropyranurolactone 4-O-β-d-digitalopyranosyl-(1 → 4)-O-β-d-cymaropyranosyl-(1 → 4)-O-β-d-oleandropyranosyl-(1 → 4)-O-β-d-cymaropyranoside (2), 3β,17α,20(S)-trihydroxy-5α-pregn-6-ene (3), and 5α-pregn-6-ene-3β,17α,20(S)-triol-3-O-β-d-digitalopyranoside (4) by spectroscopic methods.     

朝鲜淫羊藿中的一个新黄酮苷

目的对朝鲜淫羊藿提取物进行化学成分的研究。方法通过硅胶柱色谱、聚酰胺柱色谱、Sephadex LH 20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3,5,7 trihydroxyl 4′methoxy 8(3″hydroxyisopentyl)flavone 7OβDglucopyranosyl 3OβDglucopyranosyl(1→3)αL(4 acetyl)rhamnopyranoside。结论该化合物为未见文献报道的新化合物,命名为朝藿苷F(Caohuoside F)。