Chemical constituents from the leaves of Cistus parviflorus

A phytochemical investigation on the leaves of Cistus parviflorus led to the isolation of 18 compounds. The structures of the isolated compounds were elucidated as kaempferol 3-O-(3′′,6′′-di-O-E-p-coumaroyl)-β-D-glucopyranoside (1), scopoletin (2),kaempferol 3-O-(3′′-O-E-p-coumaroyl)-β-D-glucopyranoside (3), kaempferol 3-O-(6′′-O-E-p-coumaroyl)-β-D-glucopyranoside (4), kaempferol 3-O-β-D-glucopyranoside (5), kaempferol 3-O-α-L-rhamnopyranosyl-(1→2)-(6′′-O-E-p-coumaroyl)-β-D-glucopyranoside (6), methyl flavogallonate(7), quercetin 3-O-β-D-glucopyranoside (8), quercetin 3-O-β-D-galactopyranoside (9), hydroquinone (10), arbutin (11), methyl β-glucopyranoside (12), shikimic acid (13), (S)-1,2-propandiol-1-O-β-D-glucopyranoside (14), benzyl-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (15), 2-phenethyl-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (16), corchoionoside C (17), kaempferol 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (18) by the analysis of the MS and NMR spectroscopic data and comparison with the literature. Compounds 1–2, 6–7, 10–12, and 14–16 were isolated from Cistus genus for the first time.     

The chemical constituents in the decoction of Urtica fissa rhizomes

Phytochemical investigation of the decoction of Urtica fissa rhizomes led to the isolation of 23 known compounds. Their structures were identified as medioresinol dimethyl ether (1), L-pyroglutamic acid methyl ester (2), nicotinic acid (3), L-pyroglutamic acid (4), erythritol (5), 6-methyl-2′-deoxy thymidine (6), 2-methyl-6-(2′,3′,4′-trihydroxybutyl)-pyrazine (7), 5-hydroxyl-2-hydroxymethyl pyridine (8) , adenine (9), uracil (10), thymine (11), adenosine (12), inosine (13), 2′-deoxyadenosine (14), 2′-deoxyguanosine (15), 2′-deoxyinosine (16), uridine (17), n-butyl-O-β-D-fructopyranoside (18), di-D-fructose (19), β-D-fructofuranosyl-α-D-galactopyranoside (20), bis (5-formyl-furfuryl) ether (21), chlorogenic acid (22), and 5-hydroxymethyl furaldehyde (23) by spectroscopic methods. In addition, a total of 20 compounds (1–20) were isolated from U. fissa for the first time. Meanwhile, compounds 1, 6, 7, 8, 19 and 20 were isolated from the Urticaceae plants for the first time.     

鸡血藤化学成分的分离与结构鉴定

目的对中药鸡血藤(Spatholobus suberectus Dunn)中化学成分进行分离及结构鉴定。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及高效液相色谱等手段进行分离纯化,并通过理化性质与波谱分析方法鉴定了化合物的结构。结果从鸡血藤体积分数为95%的乙醇提取物中分离鉴定了9个单体成分,分别为blumenol A(1)、(6S,7E,9R)-roseoside(2)、(6S,7E,9R)-6,9-dihydroxy-4,7-megastigman-3-one-9-O-[α-L-arabinopyranosyl-(1→6)-(β-D-glucopyranoside](3)、7S,8R-erythro-4,9,9'-trihydroxy-3,3'-dimethoxy-8-O-4'-neolignan-7-O-β-D-glucopyranoside(4)、(7S,8R)-dihydrodehydrodiconiferyl alcohol-4-O-(β-D-glucopyranoside(5)、(7S,8R)-3,3',5-trimethoxy-4',7-epoxy-8,5'-neolignan-4,9,9'-triol(6)、次黄苷(hypoxanthine-9-β-D-ribofuranoside,7)、烟酸(nicotinic acid,8)和丁二酸(amber acid,9)。结论其中2-8均为首次从密花豆属中分离得到的化合物。     

荷叶中化学成分的分离与鉴定

目的研究荷叶中的化学成分。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及PHPLC法进行分离纯化,并通过理化性质、光谱分析方法及与文献对比,鉴定化合物的化学结构。结果从荷叶体积分数为70%的乙醇提取物中分离鉴定了8个化合物,其中有4个木脂素类:(+)-松脂醇[(+)-pinoresinol,1]、(+)-表松脂醇[(+)-epipinoresinol,2]、sylvatesmin(3)、(+)-异落叶松树脂醇[(+)-isolariciresinol,4];4个降倍半萜类:(3S,5R,6S,7E)-5,6-epoxy-3-hydroxy-7-me-gastigmen-9-one(5)、4,5-dihydroblumenol A(6)、(E)-3-oxo-retro-α-ionol(7)、(3S,5R,6R,7E,9S)-megastigman-7-ene-3,5,6,9-tetraol(8)。结论化合物1-8均为首次从莲属植物中分离得到。     

海洋生物卤虫卵化学成分的分离与鉴定

目的对海洋生物卤虫卵的化学成分进行研究。方法采用反复硅胶柱色谱、ODS柱色谱、Sephadex LH-20柱色谱、TLC制备薄层色谱和半微量制备高效液相色谱等技术进行分离、纯化,通过ESI-MS、1H-NMR、13C-NMR、2D NMR等谱学数据进行结构鉴定。结果从卤虫卵的体积分数95%乙醇溶液提取物中分离得到9个单体化合物,分别鉴定为甾醇类化合物:3β-羟基胆甾-5-烯-7-酮(3β-hydroxycholesta-5-en-7-one,1)、豆甾醇(stigmasterol,2)、胆甾醇(cholesterol,3);脂肪酸甘油酯类:α-棕榈酸甘油酯(palmityl glycerin ester,4)、(8Z)-2,3-二羟基丙基-十七碳-8-烯酸酯[(8Z)-2,3-dihydroxypropyl heptadec-8-enoate,5];其他类:(4E)-2-(二十六酰胺)-4-十八碳烯-1,3-二醇[(4E)-2-(hexacosancanoylamino)-4-octadecene-1,3-diol,6]、反式-3-氧代-β-紫罗兰酮[(E)-3-oxo-β-ionone,7]、肉桂醇(cinnamic alcohol,8)、海藻糖(trehalose,9)。结论化合物1、5～8为首次从卤虫属内分离得到。     

温郁金挥发油的化学成分

目的对温郁金(Curcuma wenyujin)挥发油的化学成分进行研究。方法采用硅胶柱色谱、正反相MPLC及HPLC等进行分离纯化,通过波谱分析鉴定其结构。结果从温郁金挥发油中分离得到10个化合物,鉴定为莪术醇(1)、莪术二酮(2)、(4S,5S)-germacrone-4,5-epoxide(3)、germa-crone-1,10-epoxide(4)、新莪术二酮(5)、(5R,6R,7αR)-5-isopropenyl-3,6-dimethyl-6-vinyl-5,6,7α-tetrahydro-4H-enzofuran-2-one(6)、hydroxyisogermafurenolide(7)、(5R,6R,7aS)-5-isopropenyl-3,6-dimethyl-6-vinyl-5,6,7,7-αtetrahydro-4-Hbenzo-furan-2-one(8)、脱-氢1,8-桉叶素(9)、p-menth-2-ene-1,8-diol(10)。并通过核磁共振手段对其碳氢信号进行了全归属。结论化合物6、7为新的天然产物;化合物4、8、10为首次从该属植物中分离得到;化合物4、6、7、8、10为首次从该种植物中分离得到。     

杜仲叶中倍半萜及降碳倍半萜的分离与鉴定

目的 研究植物杜仲(Eucommia ulmoides Oliver)叶中的化学成分.方法 综合运用硅胶柱色谱、反相硅胶柱色谱和Sephadex LH-20凝胶柱色谱以及制备型高效液相色谱等方法进行系统分离,根据化合物的理化性质及其波谱数据确定化合物的结构.结果 从杜仲叶80％(体积分数)乙醇提取物中分离得到了12个倍...     

Chemical constituents from the the twigs and leaves of Caesalpinia enneaphylla

Fifteen compounds were isolated from the twigs and leaves of Caesalpiniaenneaphylla. Their structures were identified to be: (E)-3-(4-hydroxybenzylidene)- 5,7-dihydroxychroman-4-one (1), 8-methoxybonducellin (2), (E)-3-(3,4- dihydroxybenzylidene)-5,7-hydroxychroman-4-one (3), 2′,4′-dihydroxychalcone (4), oxyfadichalcone B (5), 7-hydroxyflavonone (6), pinocembrin (7), kaempferol (8), quercitrin (9), kaempferol 3-O-α-L-rhamnopyranoside (10), quercetin 3-O-α-D-arabinoside (11), trans-2,3-diacetoxy-1-[(benzoyloxy)methyl]-cyclohexa-4,6-diene (12), 3-hydroxybenzyl benzoate (13), 2-acetoxybenzyl benzoate (14), and glutinol (15). All the compounds were isolated from C. enneaphylla for the first time.     

中药北刘寄奴中化学成分的分离与鉴定

目的研究中药北刘寄奴(Siphonostegia chinensis Benth.)的化学成分。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及高效液相色谱等手段进行分离纯化,并通过理化性质与光谱分析方法鉴定化合物的结构。结果从北刘寄奴体积分数95%乙醇提取物中分离鉴定10个单体化合物,分别为反式对羟基肉桂酸((E)-p-hydroxycinnamic acid,1)、咖啡酸(caffeic acid,2)、syring-in(3)、(7S,8R)-dehydrodiconiferyl alcohol 9'-β-glucopyranoside(4)、vanillyl alcohol-4-O-β-D-gluco-pyranoside(5)、2,6-二甲氧基-4-羟基苯酚-1-O-葡萄糖苷(2,6-dimethoxy-4-hydroxyphenol 1-O-glu-copyranoside,6)、3,5-dimethoxy-4-hydroxybenzyl alcohol 4-O-β-D-glucopyranoside(7)、rubinaphthinA(8)、rel-5-(3S,8S-dihydroxy-1R,5S-dimethyl-7-oxa-6-oxobicyclo[3,2,1]-oct-8-yl)-3-methyl-2Z,4E-pentadienoic acid(9)、(6S,9R)-roseoside(10)。结论化合物2～10为首次从阴行草属植物中分离得到。     

苏木的化学成分研究

研究苏木Caesalpinia sappan L．的化学成分。利用溶剂萃取，反复硅胶、凝胶柱色谱和反相硅胶等手段进行分离纯化，根据理化性质、波谱数据进行结构鉴定。分离并鉴定了14个化合物，分别为巴西苏木素（1），苏木酮B（2），（E）-3-（3，4-dihydroxybenzylidene）-7-hydroxychroman-4-one（3），3-去氧苏木酮B（4），brazilideA（5），1，7-二羟基[口山]酮（6），槲皮素（7），鼠李素（8），苏木查耳酮（9），3-去氧苏木查耳酮（10），butein（11），2,4，5-三羟基苯甲醛（12），3,8，9-trihydroxy-6H-benzo[c]chromen-6-one（13），β-谷甾醇（14）。化合物12和13为两个新天然产物，首次报道了化合物13的碳谱数据。化合物6为首次从豆科植物中分离得到，也是云实属分离得到的第一个[口山]酮类化合物。     

Lignans from Pilea cavaleriei Levl subsp. cavaleriei

A new lignan glycoside, named (7S,8R,8′R)-(−)-lariciresinol-9-O-α-L-rhamnopyranosyl (1→2) β-D-glucopyranoside (1),was isolated from the ethanol extract of Pilea cavaleriei Levl subsp. cavaleriei, together with 17 known lignans (2−18). The structures of these compounds were elucidated by extensive spectroscopic analysis, including 1D NMR, 2D NMR and HR-ESI-MS. All the compounds were obtained from the genus Pilea for the first time.     

Terpene and phenolic constituents of <Emphasis Type="Italic">Lactuca indica</Emphasis> L.

We isolated seven terpenes and five phenolic constituents from the aerial parts of Lactuca indica L. using column chromatographic separation of its MeOH extract. Their structures were determined by spectroscopic methods to be trans-phytol (1), 3beta-hydroxyglutin-5-ene (2), 5,6-epoxy-3-hydroxy-7-megastigmen-9-one (3), 11beta-13-dihydrolactucin (4), 2-phenylethyl beta-D-glucopyranoside (5), cichorioside B (6), 1-hydroxylinaloyl-6-O-beta-D-glucopyranoside (7), (6S,9S)-roseoside (8), benzyl-beta-D-glucopyranoside (9), 2-(3'-O-beta-D-glucopyranosyl-4'-hydroxyphenyl)-ethanol (10), 3-(beta-D-glucopyranosyloxymethyl)-2-(4-hydroxy-3-methoxyphenyl)-5-(3-hydroxypropyl)-7-methoxy-dihydrobenzofuran (11), and (+)-taraxafolin-B (12). Compounds 1-3, 5, and 7-12 were isolated for the first time from this plant source. The isolated compounds were tested for cytotoxicity against four human tumor cell lines in vitro using a Sulforhodamin B bioassay.     

蒙古黄芪化学成分研究

目的研究蒙古黄芪的化学成分。方法采用硅胶柱色谱、凝胶柱色谱方法进行分离纯化,利用波谱分析法结合理化性质确定化合物结构。结果从蒙古黄芪的乙酸乙酯和正丁醇萃取部分中共分离得到14个化合物,分别鉴定为(6aR,11R)-9,10-二甲氧基紫檀烷-3-O-β-D-葡萄糖苷(1),(3R)-2′-羟基-3′,4′-二甲氧基异黄烷-7-O-β-D-葡萄糖苷(2),5′-羟基-3′-甲氧基异黄酮-7-O-β-D-葡萄糖苷(3),芒柄花苷(4),(6aR,11R)-3-羟基-9,10-二甲氧基紫檀烷(5),(3R)-7,2′-二羟基-3′,4′-二甲氧基异黄烷(6),5′,7-二羟基-3′-甲氧基异黄酮(7),芒柄花素(8),黄芪甲苷(9),黄芪皂苷II(10),蔗糖(11),腺嘌呤核苷(12),十六烷酸单甘油酯(13),十六烷酸(14)。结论化合物5,7,11～14为首次从黄芪属植物中分离得到,化合物6为首次从蒙古黄芪中分离得到。     

Chemical constituents from the red alga Symphyocladia latiuscula

The extraction and solvent fractionation of red alga Symphyocladia latiuscula, and repeated column chromatography led to isolation of 17 compounds: cholesterol (1), 3β,5β-dihydroxy-B-norcholestan-6β-carboxaldehyde(2),6β-hydroxy-cholest-4-ene-3-one(3), 1-O-myristoyl-3-O-(6′-sulfo-α-D-quinovopyranosyl)glycerol (4), 1-O-palmitoyl-3-O-(6′-sulfo-α-D-quinovopyranosyl)glycerol (5), 1-O-palmitoyl-3-O-[α–D-galactopyranosyl(1→6)β-D-galactopyranosyl] glycerol(6), 1-O-palmitoyl-3-O-β-D-galactopyranosylglycerol (7), methyl hexadecanoate (8), methyl stearate(9), hexadecanoic acid (10), γ-n-butyl cis-aconiate (11), α-n-Butyl cis-aconiate (12), phenethylamine (13),3,5-dibromo-L-tyrosine (14), 3-methylbutylamine (15),methyl pyroglutamate (16),n-butyl pyroglutamate (17).The structures of these compounds were identified by NMR spectroscopy and mass spectrometry, and compared with those reported in the literature. All the compounds were isolated from Symphyocladia genus for the first time.These compounds were investigated for their inhibitory effects on human recombinant aldose reductase in vitro. Of the compounds, 1-O-palmitoyl-3-O-β-D-galactopyranosylglycerol (7) demonstrated moderate enzyme inhibition.     

水蓼化学成分的分离与鉴定

目的对中药水蓼的化学成分进行研究。方法采用硅胶、凝胶柱色谱和重结晶等分离方法对体积分数为75%的水蓼全草乙醇溶液提取物进行成分分离,通过谱学分析方法结合理化性质进行结构鉴定。结果共分离得到10个化合物,分别鉴定为蒲公英萜酮(taraxerone,1)、木栓烷醇(friedelanol,2)、乌索酸(ursolic acid,3)、齐墩果酸(oleanolic acid,4)、3β,13β-二羟基-11-烯-28-乌索酸(3β,13β-dihydroxy-urs-11-en-28-oic acid,5)、没食子酸(gallic acid,6)、(-)-clovane-2,9-diol(7)、槲皮素(quercetin,8)、槲皮苷(quercitrin,9)、芦丁(rutin,10)。结论化合物5、7为从蓼属植物中首次分离得到,化合物1～4为从水蓼中首次分离得到。     

Chemical constituents from Portulaca oleracea and their bioactivities

In the present study, we aimed to intensively study the chemical constituents, especially organic acids from a medicinal plant Portulaca oleracea L., and screen their anti-inflammatory and quinone reductase (QR, a phase II detoxyfication enzyme) inductive activity. A total of 20 compounds were isolated and identified based on spectroscopic methods, as succinic acid (1), mono-methyl succinate (2), L-malic acid (3), L-1-methyl malate (4), L-4-methyl malate (5), L-dimethyl malate (6), L-6-ethyl citrate (7), L-1-methyl citrate (8), L-1,5-dimethyl citrate (9), 4-hydroxy-5-methylfuran-3-carboxylic acid (10), 5-hydroxymethyl-furoic acid (11), stearic acid (12), L-pyroglutamic acid (13), cyclo-(tyrosine-leucine) (14), L-isoleucine (15), (–)-dehydrovomifoliol (16), (–)-epiloliolide (17), 3,4-dihydroxyphenylethanol (18), succinimide (19), and uracil (20). Among them, 14 compounds (2, 4–8, 10, 11, 13–18) were isolated from P. oleracea for the first time. Compound 18 (12.5 μM) exhibited potent anti-inflammatory effect in lipopolysaccharide (LPS)-induced macrophage cells (RAW264.7) by reducing NO production, and it also increased QR activity in Hepa lclc7 cells. Compound 16 (50 μM) showed weak QR inductive activity. None of other compounds showed anti-inflammatory or QR inductive activities.     

连钱草的化学成分研究

目的对连钱草地上全草进一步进行化学成分的研究。方法应用多种色谱法分离连钱草中的化学成分，采用多种光谱分析法鉴定它们的结构。结果从连钱草全草中又得到9个化合物，即连钱草酮(1)、6R,9R-3-氧代-α-紫罗兰醇(2)、S(+)-去氢催吐萝芙叶醇(3)、催吐萝芙叶醇(4)、可乐苏酸(5)、槲皮素(6)、豆甾烯醇(7)、肉豆蔻酸(8)和正三十烷醇(9)。结论化合物1为未见报道的新化合物，化合物2～9均为首次从该植物中分离得到。     

Chemical constituents from Matricaria chamomilla L. (I)

In the present study, we aimed to perform a phytochemical investigation of the whole herb of Matricaria chamomilla L., a Uygur herbal medicine. A total of 18 phenolic compounds were isolated by silica gel and Sephadex LH-20 chromatography, together with preparative HPLC methods. By analysis of the MS and NMR spectroscopic data and comparison with those in literature, these 18 compounds were identified as apigenin (1), galangin (2), luteolin (3), kempherol (4), quercetin (5), hispidulin (6), 6-methoxykaempferol (7), eupafolin (8), 3-methylquercetin (9), ermanin (10), 5,7,4′-trihydroxy-3,6-dimethoxyflavonone (11),bracteoside (12), 7-O-(β-D-glucopyranosyl)-galactin (13), isochlorogenic acid B (14), isochlorogenic acid C (15), 4-hydroxybenzoic acid (16), 5-pentadecylbenzene-1,3-diol (17) and scopoletin (18). Among them, compounds 1–13 were identified as flavonoids. Compounds 2 and 6–17 were isolated from both the plant and the Matricaria genus for the first time.     

黄连水提液化学成分的分离与鉴定

目的对黄连(Coptis chinensis Franch.)的化学成分进行研究。方法采用不同柱色谱技术进行分离,通过波谱手段确定化合物结构。结果分离鉴定了22个化合物,其中9个生物碱类化合物,分别为小檗碱(berberine,1)、巴马亭(palmatine,2)、黄连碱(coptisine,3)、表小檗碱(epiberber-ine,4)、药根碱(jatrorrhizine,5)、非洲防己碱(columbamine,6)、groenlandicine(7)、木兰花碱(mag-noflorine,8)、8-氧化黄连碱(8-oxocoptisine,9);9个有机酸类化合物,分别为5-阿魏酰奎宁酸(5-O-feruloyl-D-quinic acid,10)、4-阿魏酰奎宁酸(4-O-feruloyl-D-quinic acid,11)、3-甲氧基-4-羟基苯甲酸(3-methoxy-4-hydroxybenzoic acid,12)、阿魏酸(ferulic acid,13)、香草酸-4-O-β-D-葡萄糖苷(va-nillic acid-4-O-β-D-glucopyranoside,14)、3-(3',4'-二羟基苯基)-(2R)-乳酸-4'-O-β-D-吡喃葡萄糖苷(3-(3',4'-dihydroxyphenyl)-(2R)-lactic acid-4'-O-β-D-glucopyranoside,15)、3-(4'-羟基苯基)-(2R)-乳酸(3-(4'-hydroxyphenyl)-(2R)-lactic acid,16)、3-(3',4'-二羟基苯基)-(2R)-乳酸(3-(3',4'-dihydroxyphenyl)-(2R)-lactic acid,17)、3-(3',4'-二羟基苯基)-(2R)-乳酸甲酯(3-(3',4'-di-hydroxyphenyl)-(2R)-lactic acid methyl ester,18);4个木脂素类化合物,分别为异落叶松树脂素-9-O-β-D-吡喃葡萄糖苷(isolarisiresinol-9-O-β-D-glucopyranoside,19)、(+)-松脂醇-4,4'-O-β-D-吡喃葡萄糖苷((+)-pinoresinol-4,4'-O-β-D-diglucopyranoside,20)、7S,8R,8'R-(+)-落叶松脂素-4,4'-O-β-D-吡喃葡萄糖苷(7S,8R,8'R-(+)-larisiresnol-4,4'-O-β-D-diglucopyranoside,21)、7S,8R,8'R-(+)-落叶松脂素-4-O-β-D-吡喃葡萄糖苷(7S,8R,8'R-(+)-larisiresinol-4-O-β-D-glucopyranoside,22)。结论化合物15、16、18-22为首次从黄连植物中分离得到,化合物16、18、19首次从黄连属植物中分离得到。     

海洋真菌Nigrospora sphaerica的化学成分(Ⅱ)

目的对海洋真菌Nigrospora sphaerica中的化学成分进行研究。方法采用硅胶柱色谱、凝胶以及HPLC等方法进行分离纯化,根据理化性质和光谱数据进行结构鉴定。结果分离得到了8个化合物,分别鉴定为柄曲霉素(sterigmatocystin,1)、4-苄基-3-苯基-5氢呋喃酮(4-benzyl-3-phenyl-5H-furan-2-one,2)、异黄光素[7,8-dimethyl,benzo(g)pteridine-2,4(1H,3H)-dione,3]、5,8二羟基-7甲氧基黄酮(5,8-dihydroxy-7-methoxy-2-phenyl,4H-1-benzopyran-4-one,4)、1(2H)-3,4-二氢-4,8二羟基萘[3,4-dihydro-4,8-dihydroxy,1(2H)-naphthalenone,5]、3,5双去氧-5-苯基戊糖酸γ内酯(3,5-dideoxy-5-phenyl-,γ-lactone,pentonic acid,6)、4-羟基苯乙醇乙酯(4-hydroxyphe-nylethyl acetate,7)、1,4-二氧-2,5-二酮-3,6-二苯甲基聚酯[3,6-bis(phenylmethyl)-1,4-dioxane-2,5-dione,8]。结论真菌Nigrospora sphaerica为首次从海洋中分离得到,化合物1-8为首次从该菌中分离得到。