海枫藤中C21甾体苷的分离和结构测定

从萝摩科植物海枫藤[Marsdenia officinalis Tsiang et P.T.Li.]的藤茎中分离得到四个C21甾体去氧糖苷(1)～(4). 通过化学降解和波谱技术, 确定它们的化学结构依次为: 12-O-桂皮酰基-20-O-乙酰基(20S)-孕甾烷-6-烯-3β,5α,8β,12β,14β, 17β,20-庚醇 3-O-甲基-6-去氧-β-D-阿洛吡喃糖基-(1→4)-β-D-夹竹桃吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(1), 12-O-桂皮酰基-20-O-乙酰基(20S)-孕甾烷-6-烯-3β,5α,8β,12β,14β,17β,20-庚醇3-O-β-D-葡萄吡喃糖基-(1→4)-3-O-甲基-6-去氧-β-D-阿洛吡喃糖基-(1→4)-β-D-磁麻吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(2), 12-O-桂皮酰基-20-O-乙酰基(20S)-孕甾烷-6- 烯-3β,5α,8β,12β,14β,17β,20-庚醇3-O-β-D-黄夹吡喃糖基-(1→4)-β-D-磁麻吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(3), 12-O-烟酰基-肉珊瑚苷元3-O-β-D-葡萄吡喃糖基-(1→4)-3-O-甲基-6-去氧-β-D-阿洛吡喃糖基-(1→4)-β-D-夹竹桃吡喃糖基- (1→4)-β-D-磁麻吡喃糖基-(1→4)-β-D-磁麻吡喃糖苷(4). 其中1和2为新化合物, 分别命名为haifengtenoside A, haifengtenoside B, 3和4分别为已知化合物mucronatoside H 和 hainaneosides A, 系首次从该植物中分离得到.     

高速逆流色谱法分离制备乌药叶中的黄酮类成分

应用高速逆流色谱法分离制备了乌药叶中的黄酮类成分。以正己烷-乙酸乙酯-正丁醇-冰醋酸-水(体积比为2∶4∶2∶1.5∶6)为两相溶剂系统,在主机转速800 r/min、流速2.0 mL/min、检测波长280 nm条件下进行分离制备。所得流分经高效液相色谱法检测,并经电喷雾电离质谱、核磁共振氢谱、碳谱鉴定化合物的结构。结果表明,从乌药叶总黄酮粗提物中分离得到了5个化合物,分别为槲皮素-3-O-β-D-葡萄糖苷(1)、槲皮素-5-O-β-D-葡萄糖苷(2)、槲皮素-3-O-β-D-呋喃阿拉伯糖苷(3)、槲皮素-3-O-吡喃鼠李糖苷(4)、山奈酚-7-O-α-L-吡喃鼠李糖苷(5),其中化合物1,2,3和5 为首次从该植物中分离得到。该法具有简便、快速的优点。     

狗枣猕猴桃叶化学成分研究

从狗枣猕猴桃叶中分离得到7个黄酮类化合物, 经1D NMR, 2D NMR和MS等波谱分析, 鉴定它们的化学结构分别为山柰甲黄素-3-O-芸香糖苷(Ⅰ)、 山柰甲黄素-7-O-(4"-O-乙酰基鼠李糖基)-3-O-β-D-吡喃葡萄糖苷(Ⅱ)、山柰甲黄素-7-O-(4"-O-乙酰基鼠李糖基)-3-O-芸香糖苷(Ⅲ)、山柰酚-3-O-β-D-葡萄糖苷(Ⅳ)、山柰酚-3-O-芸香糖苷(Ⅴ)、山柰甲黄素-3-O-β-D-葡萄糖苷(Ⅵ)和山柰甲黄素-7-O-鼠李糖基-3-O-芸香糖苷(Ⅶ). 其中化合物Ⅰ, Ⅱ和Ⅲ为新化合物, Ⅳ, Ⅴ和Ⅵ为首次从该植物中分离得到.     

豆荚软珊瑚Lobophytum sp. 的次生代谢产物研究

从海南岛三亚海域采集的软珊瑚Labophytumsp.中分离得五个甾醇苷(1)～(5)。通过波谱分析，确定它们的化学结构依次为3'-O-乙酰基-4-O-[β-D-吡喃木糖苷]-孕甾-20-烯-3β,4α-二醇(1)，4-O-[β-D-吡喃木糖苷]-孕甾-20-烯-3β,4α-二醇(2),4'-O-乙酰基-4-O-[β-D-吡喃木糖苷]-孕甾-20-烯-3β,4α-二醇(3),4'-O-乙酰基-4-O-[β-D-吡喃阿拉伯糖苷]-孕甾-20-烯-3β,4α-二醇(4)和4-O-[β-D-吡喃阿拉伯糖苷]-孕甾-20-烯-3β,4α-二醇(5),其中1为新化合物。体外细胞毒性实验表明：化合物(1),(2)和(5)对SKMG-4,Hep-G2和CNE2三种人体癌细胞具有抑制作用。     

华萝摩的化学成分

从萝摩科植物华萝摩(Metaplexis hemsleyana Oliv.)的根中分离到四个新甾体去氧糖甙, 分别命名为hemoside A(1), hemosideB(2), hemoside C(3)和hemoside D(4)。经光谱分析及化学反应鉴定其结构依次为: 12, 20-O-二苯甲酰肉珊瑚苷元3-O-β-D-磁麻吡喃糖苷; 12, 20-O-二苯甲酰肉珊瑚苷元3-O-β-D-黄夹吡喃糖基(1→4)-β-D-夹竹桃吡喃糖基(1→4)-β-D-磁麻吡喃糖苷; 12-O-乙酰-20-O-苯甲酰肉珊瑚苷元3-O-β-D-黄夹吡喃糖基(1→4)-β-D-夹竹桃吡喃糖基(1→4)-β-D-磁麻吡喃糖苷; 吉马苷元3-O-β-D-黄夹吡喃糖基(1→4)-β-D-夹竹桃吡喃糖基(1→4)-β-D-磁麻吡喃糖苷。     

华萝摩的化学成分

从萝摩科植物华萝摩(Metaplexis hemsleyana Oliv.)的根中分离到四个新甾体去氧糖甙, 分别命名为hemoside A(1), hemosideB(2), hemoside C(3)和hemoside D(4)。经光谱分析及化学反应鉴定其结构依次为: 12, 20-O-二苯甲酰肉珊瑚苷元3-O-β-D-磁麻吡喃糖苷; 12, 20-O-二苯甲酰肉珊瑚苷元3-O-β-D-黄夹吡喃糖基(1→4)-β-D-夹竹桃吡喃糖基(1→4)-β-D-磁麻吡喃糖苷; 12-O-乙酰-20-O-苯甲酰肉珊瑚苷元3-O-β-D-黄夹吡喃糖基(1→4)-β-D-夹竹桃吡喃糖基(1→4)-β-D-磁麻吡喃糖苷; 吉马苷元3-O-β-D-黄夹吡喃糖基(1→4)-β-D-夹竹桃吡喃糖基(1→4)-β-D-磁麻吡喃糖苷。     

仿刺参中两种新海参烷型皂苷

从仿刺参(Apostichopus japonicus Selenka)乙醇提取物中分离得到2个新的海参烷型皂苷类化合物,通过波谱数据分析并结合理化性质鉴定其分别为3β-O-{2-O-[3-O-甲基-β-D-吡喃葡萄糖-(1→3)-β-D-吡喃木糖-(1→4)-β-D-吡喃喹诺糖]-4-O-[β-D-吡喃葡萄糖]-β-D-吡喃木糖}-海参烷-7(8),25(26)-二烯-16-酮(化合物1,命名为Holotoxin E₁)和3β-O-{2-O-[3-O-甲基-β-D-吡喃葡萄糖-(1→3)-β-D-吡喃木糖-(1→4)-β-D-吡喃葡萄糖]-4-O-[β-D-吡喃葡萄糖-(1→3)-β-D-吡喃葡萄糖]-β-D-吡喃木糖}-海参烷-7(8),25(26)-二烯-16-酮(化合物2,命名为Holotoxin E₂).采用CCK-8法考察了包含上述2个新成分在内的共6个海参烷型皂苷对乳腺癌MDA-MB-231细胞和肝癌HepG2细胞的细胞毒活性.结果表明,除Holotoxin E₂外,其余5种化合物对MDA-MB-231(I...     

九子参中三个糖链上带乙酰基的新三萜皂苷-九子参苷B, C, D

从石竹科植物九子参(Silene rubicunda)根中得到四个糖链上带乙酰基的新的三萜皂苷——九子参苷A,B,C,D(rubicunosides A～D,1～4).前文已详细报道了九子参苷A的结构研究,本文报道九子参苷B,C,D的结构.通过FAB-MS和NMR,分别确定九子参苷B,C,D为糖链上带单乙酰基的三萜九糖苷、七糖苷和糖链上带双乙酰基的三萜八糖苷,分别命名为皂树酸-3-O-β-D吡喃半乳糖-(1→2)-[β-D-吡喃木糖-(1→3)]-β-D-吡喃葡萄糖醛酸-28-O-β-D-吡喃木糖-(1→3)-β-D-吡喃木糖-(1→4)-a-L-吡喃鼠李糖-(1→4)-[β-D-吡喃葡萄糖-(1→4′)-β-D-吡喃鸡纳糖-(1→2)]-[3′-O-乙酰基]-β-D-吡喃夫糖苷(九子参苷B,2),皂树酸-3-O-β-D-吡喃半乳糖-(1→2)-[β-D-吡喃木糖-(1→3)]-β-D-吡喃葡萄糖醛酸-28-O-β-D-吡喃木糖-(1→4)-a-L-吡喃鼠李糖-(1→4)-[4″-O-乙酰基-β-D-吡喃葡萄糖-(1→2)]-β-D-吡喃夫糖苷(九子参苷C,3),皂树酸-3-O-β-D-吡喃半乳糖-(1→2)-[β-D-吡喃木糖-(1→3)]-[6′-O-正丁基]-β-D-吡喃葡萄糖醛酸-28-O-β-D-吡喃木糖-(1→3)-β-D-吡喃木糖-(1→4)-a-L-吡喃鼠李糖-(1→4)-[2″-O-乙酰基-β-D-吡喃鸡纳糖-(1→2)]-[3′-O 乙酰基]-β-D-吡喃夫糖苷(九子参苷D,4).     

棠梨枝叶的化学成分研究

从棠梨枝叶(Pyrus pashia Buch.-Ham.ex D.Don)的甲醇提取物中分离得到了17个化合物,采用高分辨质谱、一维和二维核磁共振等现代波谱技术,鉴定上述化合物的结构分别为:pashinin A(1),天麻苷-7-O-顺式咖啡酸酯(2),天麻苷-7-O-反式咖啡酸酯(3),山奈酚-3-O-β-D-(6′′-O-对香豆酸酯)吡喃葡萄糖苷(4),山奈酚-3-O-β-D-(6′′-O-顺式对香豆酰)吡喃葡萄糖苷(5),天麻苷-7-O-对羟基苯甲酸酯(6),熊果苷(7),robustaside B(8),委陵菜酸(9),蔷薇酸(10),槲皮素3-O-β-D-吡喃葡萄糖苷(11),2R,3R-二氢槲皮素(12),木犀草素-4′-O-β-D-吡喃葡萄糖苷(13),芹黄素-4′-O-β-D-吡喃葡萄糖苷(14),5,7,4′-三羟基异黄酮-7-O-β-D-吡喃葡萄糖苷(15),染料木素(16),咖啡酸(17),其中化合物1和2为新化合物,化合物3为新的天然产物.除化合物17外,其余化合物均首次从该植物中分离得到.化合物1～3的抗肿瘤细胞活性实验表明其没有体外肿瘤细胞生长抑制活性(IC50>40μmol L-1);抗HIV病毒(HIV-1IIIB)实验显示:化合物1有极弱的抗HIV-1的活性,化合物4有弱的抗HIV-1的活性.     

九子参中三个糖链上带乙酰基的新三萜皂苷-九子参苷B,C, D

从石竹科植物九子参(Silene rubicunda)根中得到四个糖链上带乙酰基的新的三萜皂苷-九子参苷A, B, C, D(rubicunosides A~D, 1~4)。前文已详细报道了九子参苷A的结构研究, 本文报道九子参苷B, C, D的结构。通过FAB-MS和NMR,分别确定九子参苷B, C, D为糖链上带单乙酰基的三萜九糖苷、七糖苷和糖链上带双乙酰基的三萜八糖苷, 分别命名为皂树酸-3-O-β-D-吡喃半乳糖-(1→2)-[β-D-吡喃木糖-(1→3)]-β-D-吡喃葡萄糖醛酸-28-O-β-D-吡喃木糖-(1→3)-β-D-吡喃木糖-(1→4)-α-L-吡喃鼠李糖-(1→4)-[β-D-吡喃葡萄糖-(1→4')-β-D-吡喃鸡纳糖-(1→2)]-[3'-O-乙酰基]-β-D-吡喃夫糖苷(九子参苷B, 2), 皂树酸-3-O-β-D-吡喃半乳糖-(1→2)-[β-D-吡喃木糖-(1→3)]-β-D-吡喃萄淘糖醛酸-28-O-β-D-吡喃木糖-(1→4)-α-L-吡喃鼠李糖-(1→4)-[4"-O-乙酰基-β-D-吡喃葡萄糖-(1→2)]-β-D-吡喃夫糖苷(九子参苷C, 3), 皂树酸-3-O-β-D－吡喃半乳糖-(1→2)-[β-D-吡喃半乳糖-(1→2)-[β-D-吡喃木糖-(1→3)]-[6'-O-正丁基]-β-D-吡喃葡萄糖醛酸-28-O-β-D-吡喃木糖-(1→3)-β-D-吡喃木糖-(1→4)-α-L-吡喃鼠李糖-(1→4)-[2"-O-乙酰基-β-D-吡喃鸡纳糖-(3'-O-乙酰基]-β-D-吡喃夫糖苷(九子参苷D, 4)。     

3‐O‐Methylquercetin Glucosides from Ophioglossum pedunculosum and Inhibition of Lipopolysaccharide‐Induced Nitric Oxide Production in RAW 264.7 Macrophages

The three new 3‐O‐methylquercetin glucosides 1 – 3 , together with three known congeners and 3‐O‐methylquercetin, were isolated from the fern Ophioglossum pedunculosum (quercetin=2‐(3,4‐dihydroxyphenyl)‐3,5,7‐trihydroxy‐4H‐1‐benzopyran‐4‐one). The new compounds were identified on the basis of spectroscopic analysis as 5′‐isoprenyl‐3‐O‐methylquercetin 4′,7‐di‐β‐D ‐glucopyranoside ( 1 ), 3‐O‐methylquercetin 4′‐β‐D ‐glucopyranoside 7‐[O‐β‐D ‐glucopyranosyl‐(1→2)‐β‐D ‐glucopyranoside] ( 2 ), and 3‐O‐methylquercetin 7‐[O‐β‐D ‐glucopyranosyl‐(1→2)‐β‐D ‐glucopyranoside] ( 3 ). The effect of the isolated compounds on lipopolysaccharide (LPS)‐induced NO production was evaluated. The inhibitory activity of 3‐O‐methylquercetin derivatives decreased markedly with the increasing number of glucosyl groups in the structures.     

Triterpenoid Saponins from the Spikes of Prunella vulgaris

Three new oleanane‐skeleton triterpenoid saponins, 3β,4β,16α‐17‐carboxy‐16,24‐dihydroxy‐28‐norolean‐12‐en‐3‐yl 4‐O‐β‐D ‐xylopyranosyl‐β‐D ‐glucopyranosiduronic acid ( 1 ), (3β,4β,16α)‐17‐carboxy‐16,24‐dihydroxy‐28‐norolean‐12‐en‐3‐yl β‐D ‐glucopyranosiduronic acid methyl ester ( 2 ), and (3β,4β)‐24‐hydroxy‐16‐oxo‐28‐norolean‐12‐en‐3‐yl 4‐O‐β‐D ‐xylopyranosyl‐β‐D ‐glucopyranosiduronic acid ( 3 ), together with eight known constituents, i.e., the oleanane‐type triterpenoids 4 – 6 , and the ursane‐type triterpenoids 7 – 11 , were isolated from the spikes of Prunella vulgaris. The new structures were established by means of detailed spectroscopic analysis (IR, HR‐ESI‐MS, 1D‐ and 2D‐NMR experiments). Compounds 1 – 3 were tested for their inhibition activity against the growth of tumor cell lines; only compound 3 displayed marginal inhibition activity.     

One new diphenylmethane glycoside from the leaves of Psidium guajava L

To investigate the chemical constituents of Psidium guajava L, the EtOH/H(2)O extract of the fresh leaves was subjected to various chromatography. One diphenylmethane, one benzophenone, and eight flavonoids were isolated and elucidated as 2,6-dihydroxy-3-formaldehyde-5-methyl-4-O-(6″-O-galloyl-β-D-glucopyranosyl)-diphenylmethane (1), 2,6-dihydroxy-3,5-dimethyl-4-O-(6″-O-galloyl-β-D-glucopyranosyl)-benzophenone (2), kaempferol (3), quercetin (4), quercitrin (5), isoquercitrin (6), guaijaverin (7), avicularin (8), hyperoside (9), reynoutrin (10) by spectroscopic methods, including 1D and 2D NMR and HR-ESI-MS spectrometry as well as by comparison with published data. Compounds 5 and 10 are obtained from P. guajava for the first time, and compound 1 is a new diphenylmethane compound.     

4-（咪唑-1-基）苯甲酸镉配合物的合成和晶体结构

在水热条件下,用4-（咪唑-1-基）苯甲酸和Cd（NO3）2·4H2O为原料,制备了一种三维超分子配合物[Cd（C10H7N2O2）2·（H2O）4]n,并经X射线衍射分析确定了其单晶结构．该晶体属于单斜晶系,P2／c空间群,晶胞参数n=1．2349（5）nm,b=1．1105（5）nm,c=0．8014（5）nm,β=96．482（5）°,V=1．0920（9）nm^2,Z=2．Dc=1．699g·cm^-3,F（000）=564,ωR=0．032．结果表明,在配合物的基本结构单元[CdL2（H2O）4]中,Cd（Ⅱ）离子处于变形八面体配位环境中,配体中的N原子参与配位,而羧基中的O原子完全用于形成氢键．配合物单元之间通过氢键相互连接,形成了无限延伸的三维超分子网状结构．     

Inhibitory effects of constituents from Morus alba var. multicaulis on differentiation of 3T3-L1 cells and nitric oxide production in RAW264.7 cells

A new arylbenzofuran, 3',5'-dihydroxy-6-methoxy-7-prenyl-2-arylbenzofuran (1), and 25 known compounds, including moracin R (2), moracin C (3), moracin O (4), moracin P (5), artoindonesianin O (6), moracin D (7), alabafuran A (8), mulberrofuran L (9), mulberrofuran Y (10), kuwanon A (11), kuwanon C (12), kuwanon T (13), morusin (14), kuwanon E (15), sanggenon F (16), betulinic acid (17), uvaol (18), ursolic acid (19), β-sitosterol (20), oxyresveratrol 2-O-β-D-glucopyranoside (21), mulberroside A (22), mulberroside B (23), 5,7-dihydroxycoumarin 7-O-β-D-glucopyranoside (24), 5,7-dihydroxycoumarin 7-O-β-D-apiofuranosyl-(1→6)-O-β-D-glucopyranoside (25) and adenosine (26), were isolated from Morus alba var. multicaulis Perro. (Moraceae). Their structures were determined by spectroscopic methods. The prenyl-flavonoids 11-14, 16, triterpenoids 17,18 and 20 showed significant inhibitory activity towards the differentiation of 3T3-L1 adipocytes. The arylbenzofurans 1-10 and prenyl-flavonoids 11-16 also showed significant nitric oxide (NO) production inhibitory effects in RAW264.7 cells.     

A new triterpenoid saponin from Abrus precatorius Linn

A new triterpenoid saponin, 3-O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl subprogenin D (1), together with six known triterpenoids: subprogenin D (2), abrusgenic acid (3), triptotriterpenic acid B (4), abruslactone A (5), abrusogenin (6) and abrusoside C (7) were isolated from the leaves and stems of Abrus precatorius. Their structures were elucidated on the basis of physical and NMR analysis, respectively. Compounds 5 and 6 showed moderate cytotoxicity against MCF-7, SW1990, Hela, and Du-145 cell lines. Compounds 1, 2 and 4 were isolated from this plant for the first time.     

Five New Aromatic Glycosides from Carthamus tinctorius

Five new aromatic glycosides, 1 – 5 , named as carthamosides B₄–B₈, together with three known compounds, 4′‐(hydroxyphenacyl)‐β‐D ‐glucopyranoside ( 6 ), benzyl‐O‐α‐L ‐rhamnopyranosyl‐(1→6)‐β‐D ‐glucopyranoside ( 7 ), and 4‐(methoxybenzyl)‐O‐β‐D ‐glucopyranoside ( 8 ), have been isolated from the air‐dried flower of Carthamus tinctorius. Their structures were identified on the basis of chemical and spectroscopic methods.     

Platycoside N: a new oleanane-type triterpenoid saponin from the roots of Platycodon grandiflorum

A new oleanane-type triterpenoid saponin, named platycoside N (1), together with six known saponins, was isolated from the roots of Platycodon grandiflorum. On the basis of acid hydrolysis, comprehensive spectroscopic data analyses and comparison with the spectral data of the known compounds, its structure was elucidated as 3-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl-2β,3β,16α,23-tetrahydroxyolean-12-en-28-oic acid 28-O-β-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranoside. The six known compounds were platycodin D (2), deapioplatycodin D (3), platycodin D3 (4), deapioplatycodin D3 (5), platycoside E (6) and deapioplatycoside E (7).     

Four di-Cu(II)-substituted sandwich-type germanomolybdates obtained under different reaction conditions: from zero-dimensional to two-dimensional structure

Four di-Cu(II)-substituted sandwich-type germanomolybdates, (H(2)en)(2)H(7){[Na(0.5)(H(2)O)(3.5)](2)[Cu(2)(β-Y-GeMo(9)O(33))(2)]}·6H(2)O (1), (H(2)en)(2)H{[Na(2.5)(H(2)O)(12)](2)[Cu(en)(2)][Cu(2)(β-Y-GeMo(9)O(33))(2)]}·8H(2)O (2), [Na(4)(H(2)O)(12)](2)H(4)[Cu(2)(β-Y-GeMo(9)O(33))(2)]}·11H(2)O (3) and [Cu(en)(2)](2)[Cu(en)(2)(H(2)O)](2){[Cu(en)(2)](2)[Cu(2)(β-Y-GeMo(9)O(33))(2)]}·8H(2)O (4) (en = ethylenediamine), have been prepared. It is interesting that 1-3 were obtained in the same aqueous solution reaction system but exhibited different structures: 1 displays a 0D structure, 2 shows an organic-inorganic 1D chain structure, while 3 displays a 2D network. 4 was synthesized under hydrothermal condition by the same reagents, which represents the first transition metal-sandwiched organic-inorganic 2D heteropolymolybdate.     

Triterpene Saponins from Four Species of the Polygalaceae Family

Twelve triterpene saponins were isolated by successive MPLC over silica gel from four species of Polygalaceae: From Polygala ruwenzoriensis, five new saponins 1 – 5 of which 1 – 4 as two pairs of (E)/(Z)‐isomers, together with the four known compounds tenuifoline, (E)‐ and (Z)‐senegasaponin b, (E)‐ and (Z)‐senegin II, and polygalasaponin XXVIII, from the genus Carpolobia, one new saponin 6 from C. alba and the known arilloside ( 11 ) from C. lutea, and another new triterpene glycoside 7 from Polygala arenaria. Their structures were established mainly by 600‐MHz 2D‐NMR techniques (¹H,¹H‐COSY, TOCSY, NOESY, HSQC, HMBC) as 3‐O‐(β‐D ‐glucopyranosyl)presenegenin 28‐{O‐α‐L ‐arabinopyranosyl‐(1 → 4)‐O‐β‐D ‐xylopyranosyl‐(1 → 4)‐O‐α‐L ‐rhamnopyranosyl‐(1 → 2)‐4‐O‐[(E)‐4‐methoxycinnamoyl]‐β‐D ‐fucopyranosyl} ester ( 1 ) and its (Z)‐isomer 2 , 3‐O‐(β‐D ‐glucopyranosyl)presenegenin 28‐{O‐α‐L ‐arabinopyranosyl‐(1 → 4)‐O‐β‐D ‐xylopyranosyl‐(1 → 4)‐O‐α‐L ‐rhamnopyranosyl‐(1 → 2)‐4‐O‐[(E)‐3,4‐dimethoxycinnamoyl]‐β‐D ‐fucopyranosyl} ester ( 3 ) and its (Z)‐isomer 4 , 3‐O‐(β‐D ‐glucopyranosyl)presenegenin 28‐[O‐β‐D ‐galactopyranosyl‐(1 → 4)‐O‐β‐D ‐xylopyranosyl‐(1 → 4)‐O‐α‐L ‐rhamnopyranosyl‐(1 → 2)‐β‐D ‐fucopyranosyl] ester ( 5 ), 3‐O‐(β‐D ‐glucopyranosyl)presenegenin 28‐{O‐α‐L ‐arabinopyranosyl‐(1 → 3)‐O‐[β‐D ‐galactopyranosyl‐(1 → 4)]‐O‐β‐D ‐xylopyranosyl‐(1 → 4)‐O‐α‐L ‐rhamnopyranosyl‐(1 → 2)‐O‐[β‐D ‐apiofuranosyl‐(1 → 3)]‐4‐O‐acetyl‐β‐D ‐fucopyranosyl} ester ( 6 ), and 3‐O‐(β‐D ‐glucopyranosyl)presenegenin 28‐{O‐β‐D ‐galactopyranosyl‐(1 → 4)‐O‐[β‐D ‐glucopyranosyl‐(1 → 3)]‐O‐β‐D ‐xylopyranosyl‐(1 → 4)‐O‐α‐L ‐rhamnopyranosyl‐(1 → 2)‐β‐D ‐fucopyranosyl} ester ( 7 ) (presenegenin = (2β,3β,4α)‐2,3,27‐trihydroxyolean‐12‐ene‐23,28‐dioic acid).