Two novel bibenzyls from Dendrobium trigonopus

Two novel bibenzyl trigonopols A (1) and B (2), together with seven known compounds, gigantol (3), tristin (4), moscatin (5), hircinol (6), naringenin (7), 3-(4-hydroxy-3-methoxyphenyl)-2-propen-1-ol (8), and ( - )-syringaresinol (9), have been isolated from the stems of Dendrobium trigonopus, of which compounds 6, 8, and 9 were isolated for the first time from this species. The structures of two new compounds were elucidated as threo-22-(17-hydroxyl-9-(3-hydroxyl-4-methoxy-phenethyl)-13,16,18-trimethoxy-21H-benzo[c]chromen-21-yl)ethane-22, 23-diol (1) and 9-(4-hydroxyl-3-methoxy-phenethyl)-17-(21-hydroxyl-20-methoxy-phenyl)chroman-11, 16-diol (2) on the basis of spectroscopic methods. Trigonopol A was found to exhibit antiplatelet aggregation activity in vitro with 67.55% inhibitory ration at 1.4337 x 10(- 3) M.     

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.     

天女木兰叶中甾类化合物的分离与鉴定

目的对天女木兰叶的化学成分进行分离和结构鉴定。方法采用硅胶、凝胶柱色谱和重结晶等分离方法对天女木兰叶的体积分数为90%的乙醇溶液提取物进行成分分离;通过谱学分析方法结合化合物理化性质对分离得到的化合物进行结构鉴定。结果分离得到8个化合物,分别鉴定为豆甾-4-烯-3,6-二酮(stigmast-4-en-3,6-dione,1),豆甾-4-烯-3β,6β-二醇(stigmast-4-en-3β,6β-diol,2),5α,8α-过氧-(22E,24R)-麦角甾-6,22-二烯-3β-醇[5α,8α-epidioxy-(22E,24R)-ergosta-6,22-dien-3β-ol,3],豆甾-4-烯-6β-羟基-3-酮(stigmast-4-en-6β-ol-3-one,4),β-谷甾醇(β-sitosterol,5),(22E,24R)-麦角甾-7,22-二烯-3β,5α,6β-三醇[(22E,24R)-ergosta-7,22-dien-3β,5α,6β-triol,6],豆甾-5-烯-3β,7α-二醇(stigmast-5-en-3β,7α-diol,7),胡萝卜苷(daucosterol,8)。结论化合物2-4、6、7为首次从木兰属植物中分离得到,化合物1为首次从该植物中分离得到。     

Isolation and identification of chemical constituents from Taxus cuspidta Sibe et Zucc

Three compounds were isolated from the extract of Taxus cuspidta Sibe et Zucc with the column chromatography on silica gel and preparative HPLC methods. Their structures were identified according to the physicochemical properties and spectral analysis, and they were identified as (E)-1-methoxy-2-O-(p-coumaroyl)-myo-inositol (1), 2-deacetoxy-7beta, 9a, 10beta-trideacetyltaxinine J (2) and (3aS, 4aR, 6S, 8S, 8aS, 9R, 10R, 10aS)-benz[f]azulene-6, 8, 9, 10 (3H)-terol, 3a, 4, 4a, 5, 6, 7, 8, 8a, 9, 10-decahydro-10a-(1-hydroxyl-1-methylethyl)-1, 8a-dimethyl-5-methylene (3). Among them, compound 1 was a new compound, and compounds 2, 3 were two novel natural products.     

构树叶的化学成分

为研究构树叶(Broussonetia papyrifera)的化学成分，用Diaion HP-20，Toyopearl HW-40C，Sephadex LH-20，silica gel等柱色谱方法进行分离，根据其理化性质和波谱数据鉴定化合物结构。分离得到了19个化合物，分别鉴定为芹菜素(1)，芹菜素-7-O-β-D-吡喃葡糖苷(2)，柯伊利素-7-O-β-D-吡喃葡糖苷(3)，芹菜素-7-O-β-D-吡喃葡糖醛酸苷(4)，牡荆素-7-O-β-D-吡喃葡糖苷(5)，木犀草素(6)，5,7,4′-三羟基-6-C-［a-L-鼠李糖(1→2)］-β-D-葡糖黄酮碳苷(7)，5,7,4′-三羟基-8-C-［α-L-鼠李糖(1→2)］-β-D-葡糖黄酮碳苷(8)，异牡荆素(9)，牡荆素(10)，苯甲酸苯甲酯-2,6-二-O-β-D-吡喃葡糖苷(11)，(2R,3R,5R,6S,9R)-3-羟基-5,6-环氧-β-紫罗兰醇-2-O-β-D-葡糖苷(12)，(2R,3R,5R,6S,9R)-3-羟基-5,6-环氧-乙酰-β-紫罗兰醇-2-O-β-D-葡糖苷(13)，ficustriol (14)，(6S,9S)-玫瑰花苷(15)，3β-羟基-5α,6α-环氧-β-紫罗兰酮-2α-O-β-D-葡糖苷(16)，icariside B₁ (17)，sammangaoside A (18)，3-羟基-5α,6α-环氧-β-紫罗兰酮(19)。化合物11、12、13为新化合物，其余化合物为首次从该属植物中分离得到。     

Chemical constituents from Alpinia tonkinensis

Two new compounds, 2 alpha-(p-hydroxycinnamoyl) cineole (2) and (E)-15-nor-16-oxo-8(17),12-labdadiene (4), along with three known compounds, trans-cinnamyl methyl ester (1), 4(15)-cadinene-6,10-diol (3) and isorhamnetin-3-O-beta-D-galactosyl-(6-->1)-alpha-L-rhamnoside (5), have been isolated from Alpinia tonkinesis Gangep. Their structures have been elucidated by spectral analysis.     

Chemical constituents from Teucrium viscidum

A new monoterpenoid, 4,​5,​8-​trihydroxy-​6(7)-en-​decenoic acid γ-​lactone (1) and six known compounds, 3,7-dimethyloct-1-ene-3,6,7-triol (2), 2,8-bornanediol (3), 1-(4-hydroxyphenyl)ethane-1,2-diol (4),2-(3-methoxy-4-hydroxyphenyl)-propane-1,3-diol(5), indole-3-carboxylic acid (6), and 3-hydroxy-benzenemethanol (7) were isolated from the whole parts of Teucrium viscidum. Their structures were established by a combination of spectroscopic data analysis, besides comparison with literature data. Compounds 2–7 described above were isolated from this genus for the first time.     

穿心莲根的化学成分研究

为研究常用中药爵床科植物穿心莲(Andrographis paniculata)根的化学成分,运用各种色谱方法从安徽临泉产穿心莲根的80%乙醇提取物中分离并鉴定了28个化合物,其中20个黄酮:5,5'-二羟基-7,8,2'-三甲氧基黄酮(1)、5-羟基-7,8,2',6'-四甲氧基黄酮(2)、5,3'-dihydroxy-7,8,4',-trimethoxyflavone(3)、2'-羟基-5,7,8-三甲氧基黄酮(4)、5-羟基-7,8,2',3',4'-五甲氧基黄酮(6)、wightin(7)、5,2',6'-trihydroxy-7-methoxyflavone 2'-O-β-D-glucopyranoside(8)、5,7,8,2'-四甲氧基黄酮(10)、5-羟基-7,8-二甲氧基二氢黄酮(11)、5-羟基-7,8-二甲氧基黄酮(12)、5,2'-二羟基-7,8-二甲氧基黄酮(13)、5-羟基-7,8,2',5'-四甲氧基黄酮(14)、5-羟基-7,8,2',3'-四甲氧基黄酮(15)、5-羟基-7,8,2'-三甲氧基黄酮(16)、5,4'-二羟基-7,8,2',3'-四甲氧基黄酮(17)、二氢黄芩新...     

药用大黄中蒽醌和非蒽醌类成分的分离与鉴定

目的对药用大黄中蒽醌及非蒽醌类成分进行深入研究。方法药用大黄80%(φ)乙醇溶液提取物经硅胶柱、ODS柱、MCI gel CHP20、SephadexLH-20凝胶柱色谱及HPLC色谱分离,纯化,根据理化性质和波谱数据进行结构鉴定。结果分离得到6个蒽醌类和5个非蒽醌类成分,经波谱数据解析,分别鉴定为香兰基丙酮(vanillylacetone,1)、大黄素(emodin,2)、芦荟大黄素(aloeemodin,3)、大黄素甲醚-8-O-β-D-葡萄糖苷(physcion-8-O-β-D-glucopyranoside,4)、大黄酚-8-O-β-D-葡萄糖苷(chrysophanol-8-O-β-D-glucopyranoside,5)、1-甲基-8-羟基-9,10-蒽醌-3-O-β-D-(6'-O-桂皮酰基)吡喃葡萄糖苷(1-methyl-8-hydroxyl-9,10-anthraquinone-3-O-β-D-(6'-O-cinnamoyl)glucopyrano-side,6)、芦荟大黄素-3-(羟甲基)-O-β-D-葡萄糖苷(aloe emodin-3-(hydroxymethyl)-O-β-D-glucopy-ranoside,7)、(+)儿茶素(catechin,8)、表儿茶素没食子酸酯(epicatechin-3-O-gallate,9)、儿茶素-3-O-β-D-葡萄糖苷(catechin-3-O-β-D-glucopyranoside,10)、儿茶素-8-β-D-葡萄糖苷(catechin-8-β-D-glucopyranoside,11)。结论化合物1,6,9-11为首次从该植物中分离。     

蛇莓的化学成分

目的研究蔷薇科植物蛇莓(Duchesnea indica Focke)的化学成分。方法采用多种色谱技术对蛇莓的化学成分进行分离纯化,经理化数据和光谱数据分析鉴定其结构。结果从蛇莓中分离得到9个化合物,结构鉴定为短叶苏木酚酸(1)、短叶苏木酚酸甲酯(2)、短叶苏木酚(3)、山柰酚-3-O-α-L-鼠李糖基-(1→3)-α-L-鼠李糖基-(1→6)-β-D-半乳糖苷(4)、山柰酚-3-O-α-L-鼠李糖基-(1→6)-β-D-半乳糖苷(5)、乌苏酸(6)、齐墩果酸(7)、β-谷甾醇(8)、(24R)-6β-羟基-24-乙基-胆甾-4-烯-3-酮(9)。结论化合物1、2、4、5、7、9为首次从本属植物中分离得到。     

Inhibitory constituents of lipopolysaccharide-induced nitric oxide production in BV2 microglia isolated from Amomum tsao-ko

A methanolic extract of the fruits of AMOMUM TSAO-KO (Zingiberaceae) significantly attenuated nitric oxide production in lipopolysaccharide-simulated BV2 microglia. Two new bicyclic nonanes characterized as 6,7-dihydroxy-indan-4-carbaldehyde ( 1) and 6-hydroxy-indan-4-carbaldehyde ( 2) were isolated with the eleven known compounds 6,7-dihydroxy-3,7-dimethyloct-2-enoic acid ( 3), tsaokoin ( 4), isotsaokoin ( 5), 8-oxogeraniol ( 6), P-menth-1-ene-5,6-diol ( 7), 3alpha-hydroxycarvotagenone ( 8), tsaokoarylone ( 9), 1,7-bis(4-hydroxy-3-methoxyphenyl)-4,6-heptadien-3one ( 10), (+)-hannokinol ( 11), MESO-hannokinol ( 12) and hannokinin ( 13), from the fruits of A. TSAO-KO using bioactivity-guided fractionation. All thirteen compounds significantly inhibited lipopolysaccharide-induced nitric oxide production in BV2 microglial cells at concentrations ranging from 1 microM to 100 microM.     

Two new dammarane triterpene glycosides from the rhizomes of Panax notoginseng

Two new dammarane triterpene glycosides named notoginsenosides Rw 1 (1) and Rw 2 (2) were isolated from the rhizomes of Panax notoginseng, together with 20 known compounds including protopanaxadiol (3), protopanaxatriol (4), ginsenosides Rb1 (5), Rd (6), Re (7), Rg1 (8), Rg2 (9), 20-(S)-Rg3 (10), 20-(R)-Rg(3) (11), Rh1 (12), Rh4 (13), Rf (14), 20-O-glucopyranosyl Rf (15), notoginsenosides R1 (16), R2 (17), T5 (18), S (19), T (20), and Fa (21), and koryoginsenoside R1 (22). Based on FABMS, HRFABMS, IR, (1)H, 13C, and 2D-NMR (HSQC, HMBC, and COSY) spectral data, the structures of the new compounds were elucidated as 6-O-beta-d-xylopyranosyl-20-O-beta-d-xylopyranosyl-(1 --> 6)-beta-d-glucopyranosyldammar-24-ene-3beta,6alpha,12beta,20(S)tetraol (1) and 6-O-beta-d-xylopyranosyl-(1 --> 2)-beta-d-glucopyranosyldammar-22-ene-(trans)-3beta,6alpha,12beta,20(S), 25-pentaol (2). Compounds 3, 4, 13, and 22 were isolated from P. notoginseng for the first time.     

光果甘草三萜皂苷类化学成分研究

采用聚酰胺—大孔树脂柱色谱、ODS中压柱色谱以及半制备液相色谱分离技术,对光果甘草(Glycyrrhiza glabra L.)水提取物中三萜皂苷类成分进行分离纯化,共获得10个三萜皂苷类化合物,依据理化性质及NMR、MS波谱数据鉴定化合物结构,分别鉴定为3β-O-[β-D-glucuronpyranosyl-(1→2)-β-D-glucuronpyranosyl]-30β-O-β-Dglucuronpyranosyl-oleanane-11-oxo-12(13)-ene (1)、3β-O-[β-D-glucuronpyranosyl-(1→2)-β-D-glucuronpyranosyl]-30β-O-α-L-rhamnopyranosyl-oleanane-11-oxo-12(13)-en-22β,30-diol (2)、uralsaponin C (3)、licorice-saponin A3 (4)、licoricesaponin P2 (5)、22β-acetoxyl-glycyrrhizin (6)、macedonoside A (7)、29-hydroxyl-glycyr...     

Three new pimaren diterpenoids from marine mangrove plant, Bruguiera gymnorrhiza

Three new pimaren diterpenoids, ent-8(14)-pimarene-15R, 16-diol (1), ent-8(14)-pimarene-1alpha,15R,16-triol (2), and (5R, 9S, 10R, 13S, 15S)-ent-8(14)-pimarene-1-oxo-15R,16-diol (3), along with three known diterpenoids (4-6) have been isolated from the stem of mangrove plant Bruguiera gymnorrhiza. The structures of compounds 1-3 were determined by extensive spectroscopic (2D NMR, MS, IR, and CD) analysis, and 3 and 5 showed moderate cytotoxic activities against L-929 and K562, respectively.     

Minor compounds from the stem bark of Chinese mangrove associate Catunaregam spinosa

A new dihydroisocoumarin 3-(2-hydroxypropyl)-8-hydroxyl-3,4-dihydroisocoumarin (1) and a new iridoid 3-deoxyartselaenin C (5), together with six known compounds scopoletin (2), scoparone (3), morindolide (4), pinoresinol (6), medioresinol (7), and secoisolariciresinol (8) were isolated from the stem bark of Chinese mangrove associate Catunaregam spinosa Tirveng. The structures of 1 and 5 were determined by extensive spectroscopic analysis, including 1D and 2D NMR data. All compounds except 2 were obtained from C. spinosa for the first time. And it was also the first time lignans were obtained from Catunaregam sp.     

杏香兔耳风化学成分的分离与鉴定

目的研究杏香兔耳风(Ainsliaea fragransChamp.)的化学成分,为活性测试及制定质量标准提供依据。方法利用多种色谱方法进行分离纯化,并根据理化性质和波谱数据确定化合物结构。结果分离并鉴定了9个化合物,其中1个倍半萜:(-)-clovane-2β,9α-diol(1);2个三萜:降香萜醇乙酸酯(bauerenyl acetate,2)、熊果酸(ursolic acid,3);1个寡肽:橙黄胡椒酰胺乙酸酯(aurantiamideacetate,4);5个有机酸类化合物:丁香酸(syringic acid,5)、香草酸(vanillic acid,6)、琥珀酸(succin-ic acid,7)、辛二酸(octanedioic acid,8)、二十六酸(hexacosanic acid,9)。结论上述化合物均为首次从兔儿风属植物中分离得到。     

劲直刺桐化学成分研究

采用现代多种色谱技术对劲直刺桐Erythrina strica Roxb枝叶的乙酸乙酯萃取物进行化学成分分离纯化,得到15个化合物,化合物类型涉及倍半萜、三萜、甾体、木脂素等,利用波谱技术和文献对照鉴定它们的结构分别为:loliolide (1),phaseic acid (2),pinnatififidanoid A...     

滇桂艾纳香化学成分的分离与鉴定

目的分离鉴定中药滇桂艾纳香的化学成分。方法利用硅胶柱色谱、葡聚糖凝胶(SephadexLH-20)柱色谱及HPLC等方法进行分离纯化,根据理化性质和波谱数据进行结构鉴定。结果得到10个化合物,分别鉴定为:原儿茶醛(1)、原儿茶酸(2)、对羟基苯甲醛(3)、β-谷甾醇(4)、豆甾醇(5)、山柰酚(6)、3,5,3′-三羟基-7,4′-二甲氧基黄酮(7)、3,5,3′,4′-四羟基-7-甲氧基黄酮(8)、槲皮素(9)、5-羟基-3,7,3′,4′-四甲氧基黄酮(10)。结论化合物3~10为首次从该植物中分离得到。     

养殖喘水苔海绵Tedania anhelans化学成分及其生物活性研究

目的研究养殖喘水苔海绵Tedania anhelans化学成分及其生物活性,为药源海绵规模化养殖和开发提供依据。方法综合利用薄层色谱、硅胶色谱、ODS C18色谱、Sephadex LH-20凝胶柱色谱、半制备高效液相色谱(HPLC)等方法对化学成分进行了分离;通过质量光谱测定(MS)、核磁共振(NMR)等方法并结合相关文献,对化合物结构进行鉴定。结果从养殖喘水苔海绵Tedania anhelans中分离得到13个化合物,分别为胆固醇(1)、3β-羟基-24-亚甲基胆甾-5-烯-7-酮(2)、胆甾-5-烯-3β,7α-二醇(3)、胆甾-5-烯-3β,7β-二醇(4)、3β-羟基胆甾-5-烯-7-酮(5)、胸苷(6)、去甲基胸苷(7)、环(脯氨酸-缬氨酸)二肽(8)、piperazirum(9)、(E)-4-(1H-indol-3-yl)but-3-en-2-one(10)、3-吲哚乙酸甲酯(11)、3-吲哚甲醛(12)、毛脉五味子醇(13)。结论 13个化合物均为首次从该种海绵中分离得到,化合物8在50μmol·L-1浓度水平对HSV-2病毒抑制率为60.7%。     

Isolation and identification of novel impurities in spironolactone

Three known and five new steroidal compounds as impurities in spironolactone were isolated from the enriched mother liquor by using various chromatographic methods. Their structures were elucidated by spectrometric analysis. New compounds were characterized as 3-(3,3-dimethoxy-5,7-epidithio-17β-hydroxy-4-androstan-17-yl) propionic acid γ-lactone (6); 3-(3-oxo-7-acetylthio-6β,17β-dihydroxy-4-androsten-17-yl) propionic acid γ-lactone (7); 7-acetylthio-17β-20-isopropylidendioxy-21-nor-17-pregn-4-en-3-one (8); 7-acetylthio-3-oxo-pregna-4,17(20)i-dien-22-oic acid methyl ester (9) and 7-acetylthio-17-methyl-18-nor-androsta-4-en-3-one (10).