小花盾叶薯蓣中的甾体成分

目的研究小花盾叶薯蓣的化学成分。方法运用正相和反相硅胶柱色谱对其化学成分进行分离，用IR，NMR，MS等方法进行结构鉴定。结果从乙醇提取物中分离鉴定出11个甾体化合物，分别鉴定为去酰百合皂苷(deacylbrownioside，I)、薯蓣皂苷元-双葡糖苷(diosgenin-diglucoside，II)、前薯蓣皂苷A(prosapogenin A of dioscin，III)、薯蓣皂苷(dioscin，IV)、三角薯蓣皂苷宁(deltonin，V)、三角薯蓣皂苷(deltoside，VI)、甲基三角薯蓣皂苷(methyl deltoside，VII)、薯蓣皂苷元 3-O-β-D-吡喃葡糖基-(1→3)- β -D-吡喃葡糖基-(1→4)-［ α-L-吡喃鼠李糖基-(1→2)］- β -D-吡喃葡糖苷{diosgenin 3-O-β-D-glucopyranosyl-(1→3)- β -D-glucopyranosyl-(1→4)- ［α-L-rhamnopyranosyl-(1→2)］- β -D-glucopyranoside，VIII}、小花盾叶薯蓣苷(parvifloside，IX)、甲基小花盾叶薯蓣苷(methyl parvifloside，X)、薯蓣皂苷元(diosgenin，XI)、以及β-谷甾醇(β-sitosterol)和豆甾醇(stigmasterol)的混合物。结论化合物X为一新化合物，VII与X分别为VI和IX的甲醚衍生物，可能为分离过程中所产生。I系首次从薯蓣属植物中分离得到，II和IV均为首次从小花盾叶薯蓣中分离得到。     

薤中抗凝和抗癌活性成分的结构鉴定

从百合科葱属植物薤(Alium chinense)鳞茎的抗凝和抗癌活性部位中,分离得到了6个化合物。经过化学方法和光谱分析(IR,EI-MS,¹HNMR,¹³HNMR,¹H-¹HCOSY,HMBC,HMQC和NOESY谱),鉴定它们的结构分别为(25R,S)-5α-spirostane-3β-ol 3-O-｛β-D-glucopyranosyl-(1→2)-[β-D-glucopyra-nosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside｝(1),(25R,S)-5α-spirostane-3β-ol 3-O-｛β-D-glucopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→3)](6-acetyl-β-D-glucopyranosyl)-(1→4)-β-D-galac-topyranoside｝(2),(25R,S)-5α-spirostane-2α,3β-diol3-O-｛β-D-glucopyranosyl-(1→2)-O-β-D-glucopyra-nosyl-(1→4)-β-D-galactopyranoside｝(3),(25S)-24-O-β-D-glucopyranosyl 3β,24β-dihydroxy-5α-spirost-3-O-α-arabinopyranosyl-(1→6)-β-D-glucopyranoside(4),chinenosideI(5)及2,3,4,9-tetrahydro-1-methyl-1H-pyrido[3,4-b]indole-3-carboxylicacid(6)。化合物4为一新的甾体皂甙,命名为chinenosideVI。化合物1～3为3对甾体皂甙差向异构体。其中,化合物2的25S型异构体为首次报道;25R型异构体和化合物6为首次从本种植物中分得。此外,通过NOESY谱还首次确定了化合物6的相对构型,并对其C和H信号进行了确切归属。     

卷丹中新甾体皂苷的分离和鉴定

目的研究卷丹(Lilium lancifolium Thunb.)鳞叶的化学成分。方法用各种色谱技术进行分离和纯化,用MALDI-TOF-MS,HR-SI-MS,IR,¹HNMR,₁₃CNMR,DEPT,¹H-¹H COSY,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果从卷丹鳞叶中分得2个甾体皂苷,鉴定化合物1为薯蓣皂苷元3-O-{O-α-L-鼠李糖基-(1→2)-O-［β-D-木糖基(1→3)］-β-D-葡萄糖苷,化合物2为薯蓣皂苷元3-O-{O-α-L-鼠李糖基-(1→2)-O-［α-L-阿拉伯糖基(1→3)］-β-D-葡萄糖苷。结论化合物2为新化合物,命名为卷丹皂苷A。     

穿龙薯蓣总皂苷中甾体皂苷的分离与鉴定

目的研究穿龙薯蓣总皂苷中水溶性甾体皂苷,寻找新的生物活性化合物。方法用硅胶柱色谱、薄层色谱及高效液相色谱等进行分离,通过酸水解、理化常数和波谱学分析(IR,NMR,MS,HMQC,HMBC)鉴定化合物结构。结果从穿龙薯蓣总皂苷中分得2个甾体皂苷(1个水难溶性皂苷和1个水溶性皂苷),其化学结构分别鉴定为薯蓣皂苷元-3-O-{α-L-鼠李糖(1→2)-［β-D-葡萄糖(1→3)］}-β-D-葡糖皂苷(I),薯蓣皂苷元-3-O-［α-L-鼠李糖(1→3)-α-L-鼠李糖(1→4)-α-L-鼠李糖(1→4)］-β-D-葡糖皂苷(II)。结论II为首次从穿龙薯蓣中分离得到的新化合物,命名为穿龙薯蓣皂苷Dc。     

西陵知母中甾体皂苷的分离与鉴定

目的:从新鲜西陵知母(Anemarrhena asphodeloides Bunge.)根茎中分离出有生理活性的化学成分—甾体皂苷。方法:用柱色谱法分离纯化,通过理化方法及光谱分析(UV,IR,¹HNMR,¹³CNMR,EI-MS,ESI-MS,HMBC,HMQC)鉴定化学结构。结果:从新鲜西陵知母根茎的乙醇提取物中分离得到西陵知母皂苷A与B,其化学结构分别为萨尔萨皂苷元-3-O-β-D-葡糖基(1→2)-O-β-D-半乳糖苷和萨尔萨皂苷元-3-O-β-D-葡糖基(1→3)-O-β-D-葡糖基(1→2)-O-β-D-半乳糖苷。结论:西陵皂苷B为一新化合物。     

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。     

黄山药中甾体皂苷的分离与鉴定

目的　研究黄山药的化学成分,寻找新的活性物质。方法　用硅胶柱色谱及高效液相色谱等进行分离,通过理化方法及光谱分析(IR,ESI-MS,¹HNMR,¹³CNMR,DEPT,¹H-¹HCOSY,HMQC,HMBC,NOESY)鉴定化学结构。结果　从黄山药根茎的乙醇提取物中分离得到3种甾体皂苷,其化学结构分别鉴定为26-O-β-D-吡喃葡糖基-3β,26-二醇-23(S)-甲氧基-25(R)-Δ^5,20(22)-二烯-呋甾-3-O-［α-L-吡喃鼠李糖基-(1→2)-O-α-L-吡喃鼠李糖基-(1→4)］-β-D-吡喃葡糖苷(I),伪原薯蓣皂苷(pseudoprotodioscin,II),26-O-β-D-葡吡喃糖基25(R)-呋甾-Δ^5,20(22)-二烯-3β,26-二羟基-3-O-［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(III)。结论　I为新化合物,命名为黄山药皂苷C,II,III为首次从本属植物中分得。     

知母的皂苷成分

目的：研究知母的化学成分,寻找新的活性物质。方法：利用大孔树脂柱色谱、硅胶柱色谱及高效液相色谱等手段进行分离,根据化合物的理化性质及光谱(IR,FAB-MS,ESI-MS,¹HNMR,¹³CNMR,DEPT,HMQC,HMBC,NOESY和ROESY)数据鉴定结构。结果：从中药知母分离得到两种甾体皂苷,确定其结构是：(5β,25S)-螺甾烷-3β,15α,23α-三醇-3-O-β-D-吡喃葡萄糖基(1→2)-β-D-吡喃半乳糖苷(1)和(5β,25S)-螺甾烷-3β,23α-二醇-3-O-β-D-吡喃葡萄糖基(1→2)-β-D-吡喃半乳糖苷(2)。结论：1和2均是新化合物,分别命名为知母皂苷F和知母皂苷G。     

虎眼万年青的化学成分

目的：研究栽培于长白山区的虎眼万年青Ornithogalum caudatum Ait全草的化学成分。 方法：用各种色谱技术进行分离和纯化,用ESIMS,IR,¹HNMR,¹³CNMR,DEPT,¹H-¹H COSY, ¹H-¹³C COSY, HMBC和NOESY等波谱数据分析鉴定结构。结果：从虎眼万年青全草中分离得到3个化合物,其中化合物I为新化合物,其结构鉴定为（25S, 23S, 24S）-螺甾-Δ⁵⁽⁶⁾-烯-1β, 3β,23,24-四醇-1-O-α-L-吡喃鼠李糖基-（1→2） ［β-D-吡喃木糖基-(1→3)］-α-L-吡喃阿拉伯糖苷(I),另外2个已知化合物为海柯皂苷元-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}(II)和β-谷甾醇(III)。结论：化合物I为新化合物,命名为虎眼万年青苷A,化合物II和III是首次从该植物中分得的已知化合物。     

南重楼Paris vietnamensis活性物质的分离与鉴定

目的研究南重楼Paris vietnamensis (Takht.)中具有细胞毒活性的甾体皂苷类化学成分。方法采用柱色谱进行分离纯化，通过光谱分析和理化方法鉴定化合物结构，并进行体外细胞毒活性筛选。结果从南重楼中分离得到11个甾体皂苷类化合物，化合物1结构为：3β,5α,6α-三羟基-7(8)-烯-异螺甾烷醇-3-氧-β-D-葡吡喃糖基(1→3)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(1)，命名为南重楼皂苷A。化合物2～11分别为：25(R)-薯蓣皂苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)-β-D-葡吡喃糖苷(2)；25(R)薯蓣皂苷元-3-氧-α-L-鼠李糖吡喃基(1→2)-β-D-葡吡喃糖苷(3)；25(R)薯蓣皂苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(4)；25(R)薯蓣皂苷元-3-氧-β-D-葡吡喃糖基(1→3)［α-L-鼠李吡喃糖基-(1→2)］-β-D-葡吡喃糖苷(5)；25(R)薯蓣皂苷元-3-氧-α-L-鼠李吡喃糖基(1→4)-α-L-鼠李吡喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(6)；25(R)偏诺苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)-β-D-葡吡喃糖苷(7)；25(R)偏诺苷元-3-氧-α-L-鼠李吡喃糖基(1→2)-β-D-葡吡喃糖苷(8)；25(R)偏诺苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(9)；25(R)偏诺皂苷元-3-氧-β-D-葡吡喃糖基(1→3)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(10)；25(R)偏诺苷元-3-氧-α-L-鼠李吡喃糖基(1→4)-α-L-鼠李吡喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(11)，体外筛选表明部分甾体皂苷类化合物具有细胞毒作用。结论化合物1为一新化合物，化合物2，3，6～11均为首次从南重楼中获得。化合物3，4，6，8具有对肝癌HepG2和胃癌SGC-7901的细胞毒活性。     

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。     

盾叶薯蓣中甾体皂苷的分离与结构鉴定

目的对盾叶薯蓣根茎中甾体皂苷类的化学成分进行研究。方法利用常规柱层析法与制备型HPLC法相结合对盾叶薯蓣中的活性成分进行分离纯化,通过1 H-NMR、13 C-NMR和MS等光谱法鉴定单体化合物的结构。结果从盾叶薯蓣根茎中共分离得到了20个甾体皂苷化合物,其中7个化合物为首次从该植物中发现。结论盾叶薯蓣根茎中主要含有螺甾烷型和呋甾烷型甾体皂苷。     

Two new steroidal saponins from the rhizomes of Dioscorea panthaica and their cytotoxic activity.

Two new steroidal saponins, dioscoresides C (1) and D (2), along with a new natural product, pregnadienolone 3-O-beta-gracillimatriose (3), and two known compounds, pregnadienolone 3-O-beta-chacotrioside (4) and pseudoprotodioscin (5), were isolated from the rhizomes of Dioscorea panthaica Prain et Burkill. On the basis of extensive NMR studies and chemical evidence, dioscoresides C and D were determined to be 26-O-beta-D-glucopyranosyl-3 beta,26-dihydroxy-23(S)-methoxy-25(R)-furosta-5,20(22)-dien-3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside and 26-O-beta-D-glucopyranosyl-3 beta,26-dihydroxy-20,22-seco-25(R)-furosta-5-en-20,22-dine-3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1--> 4)]-beta-D-glucopyranoside. These compounds showed mild cytotoxicity against the cancer cell lines, A375, L929, and HeLa, in a dose-dependent manner.     

A novel steroidal glycoside, ophiofurospiside A from Ophiopogon japonicus (Thunb.) Ker-Gawl

A new furospirostanol saponin, ophiofurospiside A (1), was isolated together with the known steroidal glycosides 2, 3, and 4 from the tubers of Ophiopogon japonicus (Thunb.) Ker-Gawl. Using chemical and spectral analyses (IR, MS, 1D NMR, and 2D NMR), the structure of 1 was established as 26-O-beta-d-glucopyranosyl-(22S, 25R)-furospirost-5-ene-3beta, 17alpha, 26-triol-3-O-[alpha-l-rhamnopyranosyl-(1 --> 2)]-[beta-d-xylopyranosyl-(1 --> 4)]-glucopyranoside (1). Three known steroidal saponins 2-4 were identified on the basis of spectroscopic data.     

Three new saponins from Tribulus terrestris

Three new steroidal saponins 1-3, together with five known steroidal saponins, L-mannitol and an inorganic salt were isolated from Tribulus terrestris L. (Zygophyllaceae). The structures of the new steroidal saponins were elucidated as hecogenin 3-O-beta-xylopyranosyl(1-->3)-beta-glucopyranosyl(1-->4)-beta-galactopyr anoside (1), hecogenin 3-O-beta-glucopyranosyl(1-->2)-beta-glucopyranosyl(1-->4)- beta-galactopyranoside (2) and 3-O-[beta-xylopyranosyl(1-->2)-[beta-xylopyranosyl(1-->3)]-beta- glucopyranosyl(1-->4)-[alpha-rhamnopyranosyl(1-->2)]-beta-galactopyranos yl]- 26-O-beta-glucopyranosyl-22-methoxy-(3 beta,5 alpha,25R)-furostan-3,26-diol (3). Structure elucidation was accomplished by 1D and 2D NMR spectra (13C-1H COSY, HMQC, HMBC, 1H-1H COSY, TOCSY, and NOESY), mass spectrometry (FABMS, ESIMS) and chemical methods.     

Microbial metabolism of pseudoprotodioscin

Microbial transformation of the furostanol saponin pseudoprotodioscin ( 1) using Aspergillus fumigatus resulted in the isolation of two new steroidal metabolites, 3- O-[bis- alpha- L-rhamnopyranosyl-(1-->2 and 1-->4)- beta- D-glucopyranosyl]-22 R,25 R-spirost-5-ene-3 beta,20 alpha-diol ( 2) and 3- O-[bis- alpha- L-rhamnopyranosyl-(1-->2 and 1-->4)- beta- D-glucopyranosyl]-25 R-furost-5-ene-3 beta,22 alpha,26-triol ( 3), in addition to the previously reported steroidal saponins: dioscin ( 4) and progenin II ( 5). The structure elucidation of these metabolites was based primarily on 1D and 2D NMR analyses. Metabolites 2 - 5 showed significant cytotoxicity against cancer cell lines A375, L929, and HeLa with IC (50) values ranging from 1.18 microM to 17.88 microM.     

A new beta-naphthalenecarboxylic acid biglycoside from Chirita longgangensis var. hongyao

To investigate the chemical constituents in the stems of Chirita longgangensis var. hongyao, methanol extract of the stems was subjected to column chromatography with various chromatographic techniques. One new beta-naphthalenecarboxylic acid biglycoside, 1, 4-dihydroxy-2-naphthalenecarboxylic acid methyl ester-4-O-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (1) was isolated, along with two known compounds: isotaxiresinol 4-O-methyl ether (2) and (R)-7-hydroxy-alpha-dunnione (3). Compound 2 was first obtained from Chirita genus and compound 3 was isolated from this plant for the first time. All structures were elucidated on the basis of spectral and chemical evidence, and the NMR spectroscopic data of compound 2 was published for the first time.     

The active constituents from Gualou-xiebai-baijiu-tang part I: active saponins

Two new steroidal saponins and a new triterpenoidal saponin, together with nine known steroidal saponins, were isolated from "Gualou-xiebai-baijiu-tang" consisting of Fructus trichosanthis and Bulbus allii macrostemi. The structures of the three new compounds were determined as 3-O-beta-D-galactopyranosyl-hederagenin 28-O-beta-D-xylopyranosyl (1-->6)-beta-D-galactopyranosyl ester (1), spirost 25(27)-ene-2beta,3beta-diol-3-O-beta-D-glucopyranosyl (1-->2)-beta-D-galactopyranoside (2) and 26-O-beta-D-glucopyranosyl-22alpha-hydroxy-5beta-furost-25(27)-ene-1beta,3beta,6beta,26-tetraol-3-O-beta-D-galactopyranoside (3), respectively, by means of chemical evidences and spectral analysis.