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白花丹化学成分的研究 总被引:10,自引:0,他引:10
目的:研究白花丹Plumbago zeylanicaLinn.地上部分的化学成分。方法:对白花丹95%乙醇提取物的乙酸乙酯部分进行色谱分离,通过理化性质和波谱分析鉴定化合物的结构。结果:从白花丹中分离得到9个化合物,分别鉴定为白花丹醌(Ⅰ),isoshinanolone(Ⅱ),白花丹酸(Ⅲ),β-谷甾醇(Ⅳ),对羟基苯甲醛(Ⅴ),反式桂皮酸(Ⅵ),香兰子酸(Ⅶ),2,5-二甲基-7-羟基-色原酮(Ⅷ),3-吲哚甲醛(Ⅸ)。结论:化合物Ⅴ,Ⅶ,Ⅷ和Ⅸ为首次从白花丹属植物中分离得到。 相似文献
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目的:研究藏药白花铃子香(Chelonopsis albiflora)地上部分的化学成分.方法:利用多种色谱手段进行分离纯化,根据化合物理化性质和波谱分析鉴定化合物的结构.结果:从藏药白花铃子香的氯仿部分分离得到7个化合物,分别鉴定为:1β-羟基羽扇豆醇(1)、羽扇豆醇(2)、β-谷甾醇(3)、13-羟基半日花-8(17),14-二烯-19-醛(4)、19-乙酰氧基-13-羟基半日花-8(17),14-二烯(5)、对甲基反式肉桂酸(6)、香草酸(7).结论:化合物1~7均为首次从该属植物中分离得到. 相似文献
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白花前胡化学成分研究Ⅱ 总被引:7,自引:1,他引:7
目的:分离鉴定河南产白花前胡的化学成分。方法:用乙醇提取,经大孔树脂、硅胶和反相硅胶ODS柱色谱分离化合物,利用质谱、核磁共振等现代波谱技术鉴定结构。结果:分离鉴定了8个化合物,分别为(-)sclerodin(1),棕榈酸(palmitic acid,2),白花前胡E素[(+)-praeruptorin E,3],佛手柑内酯(bergapten,4),欧前胡素(imperatorin,5),2,6-二甲基喹啉(2,6-dimethyl quinoline,6),二十四烷酸(tetracosanoic acid,7),胡萝卜苷(daucosterol,8)。结论:化合物1,6为首次从伞形科植物中分离得到;5,7为首次从该植物中分离得到。 相似文献
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目的:研究菊科地胆草属植物白花地胆草的化学成分。方法:采用大孔吸附树脂、十八烷基硅烷键合硅胶(ODS)、葡聚糖凝胶Sephadex LH-20和硅胶柱层析等多种色谱技术分离纯化,通过理化性质和波谱数据鉴定所得化合物的化学结构。结果:从白花地胆草中分离得到9个化合物,分别鉴定为:2β-deethoxy-2-hydroxyphantomolin(1)、2β-methoxy-2-deethoxyphantomolin(2)、2β-methoxy-2-deethoxy-8-O-deacylphantomolin-8-O-tiglinate(3)、柔毛地胆宁(4)、白桦酸(5)、厚朴酚(6)、和厚朴酚(7)、邻苯二甲酸二丁酯(8)、苜蓿素(9)。结论:其中,化合物5~9为首次从该植物中分离得到。 相似文献
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目的对白花败酱草Patrinia villosa的化学成分进行研究。方法通过大孔吸附树脂、Sephadex LH-20、反相HPLC等多种色谱方法分离纯化,根据理化性质和波谱数据鉴定化合物结构。结果从白花败酱草干燥全草的70%乙醇提取物中分离得到了14个化合物,分别鉴定为异地芰普内酯(1)、citroside A(2)、grasshopper ketone(3)、(E)-4-hydroxy-3,3,5-trimethy1-4-(3-oxobut-1-en-1-yl)-cyclohexan-1-one(4)、bluemenol A(5)、pubinernoid A(6)、刺槐素(7)、葛根素(8)、5-(1′-hydroxyethyl)-methyl nicotinate(9)、2-[4-(3-hydroxypropyl)-2-methoxyphenoxy]-propane-1,3-diol(10)、1-O-(β-Dglucosyl)-2-[2-methoxy-4-(3-hydroxypropyl)-phenoxy]-propan-3-ol(11)、二氢芥子醇(12)、3,5-dimethoxyl-4-hydroxylphenylpropanol-9-O-β-D-glucopyranoside(13)、2-phenylethyl-α-L-arabinopyranosyl-(1″→6′)-β-D-glucopyranoside(14)。结论所有化合物均为首次从败酱属植物中分离得到。 相似文献
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目的研究红葱Eleutherine americana的化学成分。方法采用硅胶柱色谱、Sephadex LH-20柱色谱及重结晶等方法,分离纯化红葱的化学成分,通过MS、NMR等波谱技术确定化合物结构。结果确定了7个化合物的结构,分别为9-hydroxy-8-methoxy-1-methyl-1,3-dihydronaphtho[2,3-c]furan-4-O-β-D-glucopyranoside(1)、eleutherinoside A(2)、豆甾醇-3-O-β-D-葡萄糖苷(3)、kadsuric acid(4)、豆甾醇(5)、1,2-二羟基-8-甲氧基-3-甲基蒽醌(6)、9-methoxy-1,3-dimethyl-1H-naphtho[2,3-c]pyran-5,10-dione(7)。结论化合物1为新化合物,命名为红葱新苷。化合物3~5为首次从该植物中分离得到,化合物6和7为首次获得的新天然产物。 相似文献
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Phelligridins C-F: cytotoxic pyrano[4,3-c][2]benzopyran-1,6-dione and furo[3,2-c]pyran-4-one derivatives from the fungus Phellinus igniarius 总被引:2,自引:0,他引:2
Three unique pyrano[4,3-c][2]benzopyran-1,6-dione derivatives and a new furo[3,2-c]pyran-4-one, named phelligridins C-F (2-5), together with hispolon (8), (E)-4-(3,4-dihydroxyphenyl)but-3-en-2-one (9), 4-hydroxybenzaldehyde, protocatechualdehyde, syringic acid, protocatechuic acid, caffeic acid, isoergosterone, and octadecyl ferulate were isolated and identified from the ethanolic extract of Phellinus igniarius. Their structures were determined by spectroscopic methods including IR, MS, and 1D and 2D NMR experiments. The structures of the new compounds were characterized as 3-(4-hydroxystyryl)-8,9-dihydroxypyrano[4,3-c]isochromene-4-one (2), 3-(3,4-hydroxystyryl)-8,9-dihydroxypyrano[4,3-c]isochromene-4-one (3), 8,9-dihydroxy-3-[5',6'-dihydroxy-5' '-methyl-3' '-oxo-spiro[fural-2' '(3' 'H),1'-indene]-2'-yl]-1H,6H-pyrano[4,3-c][2]benzopyran-1,6-dione (4), and (3Z)-3-(3,4-dihydroxybenzylidene)-6-(3,4-dihydroxystyryl)-2,3-dihydro-2-methoxy-2-(2-oxo-propyl)furo[3,2-c]pyran-4-one (5), respectively. Some compounds including 2 and 3 showed in vitro selective cytotoxicity against a human lung cancer cell line (A549) and a liver cancer cell line (Bel7402). Possible biogenetic sequences to the formation of 1-9 are postulated. 相似文献
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喜树中两个DNA拓扑异构酶Ⅰ抑制剂 总被引:1,自引:0,他引:1
目的:以生物活性为向导在喜树中寻找天然的DNA拓扑异构酶Ⅰ抑制剂。方法:用各种层析方法和波谱方法从喜树中分离并鉴定了14个化合物。结果:其结构分别鉴定为喜树碱(1),肌醇(2),喜果苷(3),3’甲基3,4O,O-亚甲基鞣花酸-4’-D-β-D-吡喃葡萄糖苷(4),2-氧-1,2-二氢.喹啉4酸(5),马钱子酸(6),4-甲基-1,2-环己烷二甲醇(7),strictosamide(8),獐芽菜苷(9),乙酰胺(10),氯原酸(11),strictosidinic acid(12),1-咖啡酰基奎宁酸(13)和10-羟基喜树碱(14)。结论:化合物4-13为首次从该植物中分得,化合物4的核磁数据在文献中有误,本文对其进行了重新归属。经体外活性测试,化合物1对DNA拓扑异构酶Ⅰ有中等程度的抑制作用,化合物4,14对DNA拓扑异构酶Ⅰ有强的抑制作用。 相似文献
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Bioassay-guided fractionation of a phytotoxic extract of Prionosciadium watsoni led to the isolation of three new pyranocoumarins and two pyranochromones. The new compounds were characterized as propionic acid (9R,10R)-9-acetoxy-8,8-dimethyl-9,10-dihydro-2H,8H-benzo[1,2-b:3,4-b']dipyran-2-one-10-yl ester (1), isobutyric acid (9R,10R)-9-hydroxy-8,8-dimethyl-9,10-dihydro-2H,8H-benzo[1,2-b:3,4-b']dipyran-2-one-10-yl ester (2), isobutyric acid (9R)-8,8-dimethyl-9,10-dihydro-2H,8H-benzo[1,2-b:3,4-b']dipyran-2-one-9-yl ester (10), 2-methylbut-(2Z)-enoic acid (3R)-5-methoxy-3,4-dihydro-2,2,8-trimethyl-6-oxo-2H,6H-benzo[1,2-b:5,4-b']dipyran-3-yl ester (11), and isobutyric acid (3R)- 5-methoxy-3,4-dihydro-2,2,8-trimethyl-6-oxo-2H,6H-benzo[1,2-b:5,4-b']dipyran-3-yl ester (12) by spectroscopic and chemical methods. The stereochemistry at the stereogenic centers was established by applying the Mosher ester methodology. The structures of 1 and 2 were corroborated by single-crystal X-ray diffraction studies. The phytotoxic activity of the isolated compounds was assessed on Amaranthus hypochondriacus, Echinochloa crus-galli, and Lemna pausicostata. The phytotoxins also modified the electrophoretic mobility of calmodulin from both bovine-brain and spinach. 相似文献
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毛萼獐牙菜化学成分的研究 总被引:1,自引:0,他引:1
目的:对龙胆科Gentianaceae獐牙菜属植物毛萼獐牙菜Swertia hispidicalyx Burk.的干燥全草进行化学成分研究.方法:采用各种柱色谱进行分离纯化,通过波谱数据分析( MS,1H-,13C-NMR)进行结构鉴定.结果:从乙酸乙酯萃取部分分离鉴定了11个化合物,其中2个口山酮,2个裂环烯醚萜,2个三萜,2个甾体,以及3个其他类化合物,它们分别鉴定为1,3,5,8-四羟基口山酮(1,3,5,8-tetrahydroxyxanthone,1),1,5,8-三羟基-3-甲氧基口山酮(1,5,8-trihydroxy-3-methoxyxanthone,2),龙胆内酯( gentiolactone,3),獐牙菜苦苷(swertiamarin,4),3,4-dihydro-1H,6H,8H-naphtho[1,2-c:4,5-c',d']dipyrano-1,8-dione(5),(+)-丁香脂素[(+)-syringaresinol,6)],松柏醛(trans-coniferyl aldehyde,7),山楂酸(maslinic acid,8),齐墩果酸(oleanolic acid,9),胡萝卜苷(daucosterol,10),β-谷甾醇(β-sitosterol,11).结论:化合物1~11均为首次从毛萼獐牙菜中分离得到. 相似文献
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Three new bromophenols C-N coupled with nucleoside base derivatives (1-3) and three new brominated 1,2,3,4-tetrahydroisoquinolines (5-7), together with a new brominated tyrosine derivative (4), have been isolated from polar fractions of an ethanolic extract of the red alga Rhodomela confervoides. By spectroscopic and chemical methods including HRMS and 2D NMR data, their structures were determined as 7-[3-bromo-2-(2,3-dibromo-4,5-dihydroxybenzyl)-4,5-dihydroxybenzyl]-3,7-dihydro-1H-purine-2,6-dione (1), 7-(2,3-dibromo-4,5-dihydroxybenzyl)-3,7-dihydro-1H-purine-2,6-dione (2), 9-[3-bromo-2-(2,3-dibromo-4,5-dihydroxybenzyl)-4,5-dihydroxybenzyl]adenine (3), (-)-8S-(3-bromo-5-hydroxy-4-methoxy)phenylalanine (4), (-)-3S-8-bromo-6-hydroxy-7-methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (5), methyl (-)-3S-8-bromo-6-hydroxy-7-methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (6), and methyl (-)-3S-6-bromo-8-hydroxy-7-methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (7). Compounds 5-7 were semisynthesized by using 4 as the starting material. 相似文献
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对穆库没药化学成分进行系统研究。方法:采用硅胶柱色谱,ODS柱色谱及制备HPLC等方法分离纯化,运用现代光谱学方法鉴定化合物结构。结果:从穆库没药中分离得到4个化合物,分别鉴定为Epi—magnolin(1)、1,7,8,10,11,12,13,14,15,17-decahydro-17-decahydro-17-(S)-1-hydroxyethyl-10,13-dimethyl-2H-cyclopenta[α]phenanthrene-3,16(16H,9H)-dione(2)、1,7,8,10,11, 相似文献
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W Vilegas A L Dokkeddal S Piacente L Rastrelli C Pizza 《Journal of natural products》1999,62(5):746-749
Three new compounds-3, 4-dihydro-10-hydroxy-7-methoxy-3-(R)-methyl-1H-3,4-dihydronaphtho- ]2, 3c]-pyran-1-one-9-O-beta-D-glucopyranoside (1), 3, 4-dihydro-10-hydroxy-7-methoxy-3-(R)-methyl-1H-3,4-dihydronaphtho- [2, 3c]-pyran-1-one-9-O-beta-D-glucopyranosyl-(1-->6)-glucopyranoside (2), and 3,4-dihydro-10-dihydroxy-7-methoxy-3-(R)-methyl-1H-3, 4-dihydronaphtho-[2,3c]-pyran-1-one-9-O-beta-D-allopyranosyl (1-->6)glucopyranoside (3)-were isolated from the leaves of Paepalanthus vellozioides and Paepalanthus latipes and characterized by spectrometric methods, mainly electrospray mass spectrometry and 1D and 2D NMR experiments. These unusual glycosylated dihydronaphthopyranones may serve as taxonomic markers of the genus Paepalanthus, since these compounds were not detected in other genera belonging to the Eriocaulaceae family. 相似文献
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目的 研究虎尾轮根Urariacrinita(L.) Desv.exDC的化学成分及其体外抗肾间质纤维化活性.方法 虎尾轮根乙醇提取物采用硅胶、SephadexLH-20进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构.采用MTT法进行体外抗肾间质纤维化活性筛选.结果 从中分离得到16个化合物,分别鉴定为div... 相似文献