麻叶千里光抗菌化学成分的研究(Ⅰ)

目的研究麻叶千里光 (SeneciocannabifoliusLess .)抗菌活性成分。 方法以革兰氏阳性菌金黄色葡萄球菌 (Staphylococcusaureus)、枯草芽孢杆菌 (Bacillussubtilis)和阴性菌大肠杆菌 (Es cherichiacoli)为受试菌 ,采用体外抑菌圈法追踪抗菌活性部分 ,利用各种色谱技术进行分离纯化 ,根据理化性质和波谱学数据进行结构鉴定。结果麻叶千里光水提醇沉物的乙酸乙酯萃取部分显示最强的抑菌活性 ,从该部分分离得到 9个化合物 ,均为酚酸类化合物 ,分别鉴定为 :对 羟基苯乙酸 (p hydroxybenzeneaceticacid ,E 1)、对 二苯酚 (1,4 benzenediol,E 2 )、对 羟基苯乙酸甲酯 (methylp hydroxybenzeneacetate ,E 3)、2 ,5 二羟基苯甲酸 (2 ,5 dihydroxybenzoicacid ,E 4 )、2 ,5 二羟基苯乙酸 (2 ,5 dihydroxybenzeneaceticacid ,E 5 )、2 ,5 二羟基苯乙酸甲酯 (methyl 2 ,5 dihydroxybenze neacetate ,E 6 )、3 羟基 4 甲氧基苯甲酸 (3 hydroxy 4 methoxybenzoicacid ,E 7)、对 羟基苯甲酸 (p hydroxybenzoicacid ,E 8)、邻 羟基苯甲酸 (o hydroxybenzoicacid ,E 9)。结论麻叶千里光对金黄色葡萄球菌和枯草芽孢杆菌抑菌效果明显 ,对大肠杆菌作用较弱。其中E 3～E 9为该植物首次分离得到     

云南血竭中的酚性成分(1)(摘要)

目的 :研究以剑叶龙血树 (Dracaenacochinchinensis(Lour.)S.C .Chen)的树脂为原料的血竭的化学成分。方法 :使用SephadexLH -2 0 ,MCIgelCHP 2 0P及硅胶等材料进行柱层析分离 ,根据化合物的光谱数据 (IR ,UV ,FAB --MS ,1 3C-NMR ,1H -NMR和HMBCNMR)鉴定其结构。结果 :从云南产血竭中分离到 1 1个酚性化合物 ,分别鉴定为 :二对羟基苯基甲烷 ( 1 ) ,3,4 -二羟基烯丙基苯 ( 2 ) ,3,4 -二羟基烯丙基苯 3-O -β-D -葡萄吡喃糖苷 ( 3) ,3,5,4’ -三羟基二苯乙烯 ( 4) ,7,4’ -二羟基 -3’ -甲氧基黄烷 ( 5) ,7,4’ -二羟基二氢黄酮 ( 6) ,7-羟基 -3-(对 -羟基苯基 ) -色原烷( 7) ,刺五加甙B( 8) ,对羟基苯甲酸 ( 9) ,对羟基苯酚 ( 1 0 )和原儿茶醛 ( 1 1 )。结论 :化合物 1 -1 0是首次从该植物中分离得到。     

天葵子的化学成分研究

目的研究天葵子Semiaquilegia adoxoides的化学成分。方法采用多种色谱方法分离化学成分,依据理化性质、波谱数据分析进行结构鉴定。结果分离鉴定了9个化合物,分别为:邻苯二甲酸-二-2-乙基-己酯(1),对苯二甲酸-二丁酯(2),富马酸(3),3-羟基-4-羟基苯甲酸(4),阿魏酸(5),辛二酸(6),5-(2-羟乙基)-2-O-β-D-吡喃葡萄糖基苯酚(7),4-[β-D-芹糖-(1→6)-O-β-D-吡喃葡萄糖基]苯乙腈(8),芬氏唐松草定碱(9)。结论化合物1 -7和9为首次从天葵属中分离得到。     

寄生藤水溶性成分的分离与鉴定

目的研究寄生藤的水溶性成分。方法利用反相色谱的方法对寄生藤水溶性成分进行分离纯化,根据化合物的化学性质与波谱数据鉴定结构。结果从寄生藤的水提取物中分得9个化合物,确定其结构分别为thero-1-C-syringylglycerol(1)、erythro-1-C-syringylglycerol(2)、erythro-guaia-cylglycerol(3)、tachioside(methoxyhydroquinone-4-β-D-glucopyranoside,4)、isotachioside(methoxy-hydroquinone-1-β-D-glucopyranoside,5)、3,5-二甲氧基-4-羟基-苯酚-1-O-β-D-吡喃葡萄糖苷(3,5-di-methoxy-4-hydroxyphenol-1-O-β-D-glucopyranoside,6)、2,6-二甲氧基-4-羟基-苯酚-1-O-β-D-吡喃葡萄糖苷(2,6-dimethoxy-4-hydroxyphenol-1-O-β-D-glucopyranoside,7)、1,2,3-三羟基苯(benzene-1,2,3-triol,8)、异鸟嘌呤核苷(isoguanosine,9)。结论化合物1~9为首次从寄生藤属植物中分离得到。     

土壤真菌07-11号菌株中的酚酸性成分

以稻瘟霉 (Pyriculariaoryzae)分生孢子及菌丝形态变化为指标 ,对从云南土壤中分离得到0 7 1 1真菌的发酵产物中活性成分追踪分离 ,从其乙酸乙酯层浸膏中得到 3个酚酸性成分 ,经光谱数据分析和理化鉴别 ,分别鉴定为邻羟基苯甲酸 (Ⅰ )、4 ,6 二羟基 5 甲基异苯并呋喃酮 (Ⅱ )及 2 甲酰基 3 ,5 二羟基 4 甲基苯甲酸 (Ⅲ ) ,它们对稻瘟霉分生孢子及菌丝体都有一定抑制作用     

3,5-二叔丁基-4-羟基苯甲酸的合成

以2，6-二叔丁基-4-甲基苯酚为原料，在乙酸溶液中与溴反应形成3，5-二叔丁基-4-羟基苯甲醛，然后经Jones氧化得到3，5-二叔丁基-4-羟基苯甲酸，总收率63．7％。     

云南血竭中的酚性成分(2)(摘要)

目的 :进一步研究以剑叶龙血树 (Dracaenacochinchinensis)树脂为原料的血竭的酚类化学成分。方法 :用SephadexLH -2 0 ,MCIgelCHP 2 0P及硅胶等层析材料进行柱层析分离 ,纯化 ,根据化合物的光谱数据 (IR ,UV ,FAB --MS ,1 3C-NMR ,1H -NMR和HMBCNMR)鉴定结构。结果 :从云南产血竭中又分离到 1 1个酚性化合物 ,分别鉴定为 :2 ,4 ,4’ -三羟基 -二氢查耳酮 ( 1 ) ,2 -甲氧基 -4 ,4’ -二羟基二氢查耳酮 ( 2 ) ,2’ ,4 ,4’ -三羟基查耳酮 ( 3) ,2 -甲氧基 -4 ,4’ -二羟基查耳酮 ( 4) ,2’ -甲氧基 -4 ,4’ -二羟基查耳酮 ( 5) ,2 ,4 ,4’ -三羟基二氢查耳酮 4 -O -β -D -葡萄糖苷 ( 6) ,6-甲氧基 -2 ,4 ,4’ -三羟基二氢查耳酮 ( 7) ,2 ,4 ,2’ ,5’ -四羟基二氢查耳酮 ( 8) ,2 ,4’ -二羟基 -4 -甲氧基二氢查尔酮 -( 5-1 ) -1 -(对 -羟基苯基 ) -3-( 2 ,4 -二羟基苯基 ) -丙烷 ( 9) ,2’ -methoxysocotrin -5’ -ol( 1 0 ) ,socotrin -4’ -ol( 1 1 )。结论 :化合物 2、6、8和 9为新化合物 ,其余化合物均首次从该植物中分离得到。     

葫芦茶化学成分的研究

目的研究葫芦茶的化学成分。方法采用柱色谱技术对葫芦茶提取物进行分离纯化,采用波谱技术结合化学方法进行结构鉴定。结果与结论从葫芦茶中分离得到了8个化合物,分别鉴定为3,4-二氢-4-(4'-羟基苯基)-5,7-二羟基香豆素(1)、二氢槲皮素(2)、顺式对羟基肉桂酸(3)、反式对羟基肉桂酸(4)、原儿茶酸乙酯(5)、4-羟基-3,5-二甲氧基苯甲酸(6)、4-羟基-3-甲氧基苯甲酸(7)、对羟基苯甲酸(8)。结论化合物1~4均为首次从该植物中分离得到。     

徐长卿中酚类成分的分离与鉴定

目的研究徐长卿(Cynanchum paniculatum(Bge.)Kitag.)的酚类成分,为其药理活性的研究奠定物质基础。方法通过多种色谱方法进行分离纯化,根据理化性质和1H-NMR、13C-NMR波谱数据分析进行结构鉴定。结果从徐长卿中分离得到14个酚类化合物,分别鉴定为:苯甲酸(benzoic acid,1)、3-甲基苯酚(3-methylphenol,2)、对羟基苯乙酮(p-hydroxyacetophenone,3)、3-羟基苯乙酮(3-hydroxyacetophenone,4)、对甲氧基苯甲酸(p-methoxybenzoic acid,5)、肉桂酸(cinnamic acid,6)、2,4-二羟基苯乙酮(2,4-dihydroxyacetophenone,7)、2,5-二羟基苯乙酮(2,5-dihydroxyacetophenone,8)、罗布麻宁(apocynin,9)、2,5-二羟基-4-甲氧基苯乙酮(2,5-dihydroxy-4-methoxyacetophenone,10)、丁香醛(syringaldehyde,11)、3,5-二甲氧基-4-羟基苯乙酮(4-hydroxy-3,5-dimethoxyacetophenone,12)、3-吲哚甲醛(1H-indole-3-carboxaldehyde,13)和3-甲氧基-4,5-亚甲二氧基-苯乙酮(3-methoxy-4,5-methylenedioxy-acetophenone,14)。结论化合物2、5、12¹4为首次从鹅绒藤属植物中分离得到,化合物1、6、8、9、11为首次从该植物中分离得到。     

鹿根的化学成分

目的研究鹿根(Rhaponticum carthamoides(Willd.)Iljin.)中化学成分。方法采用反复硅胶柱色谱法、Sephadex LH-20柱色谱法、ODS柱色谱法和反复重结晶等进行分离纯化,并通过理化常数测定和波谱分析鉴定了其化学结构。结果从鹿根体积分数为70%的乙醇溶液提取物中分离得到9个化合物,并鉴定其结构为:肉桂酸(cinnamic acid,1)、对羟基苯甲酸(4-hydroxybenzoic acid,2)、3,4-二羟基苯甲酸(3,4-dihydroxybenzoic acid,3)、3-羟基-4-甲氧基苯甲酸(3-hydroxy-4-methoxylbenzoic acid,4)、2,4-二羟基苯甲酸(2,4-dihydroxybenzoic acid,5)、苯甲醇-O-β-D-吡喃葡萄糖苷(benzyl-O-β-D-glucopyranoside,6)、丁香苷(syringin,7)、β-谷甾醇(β-sitosterol,8)、胡萝卜苷(daucosterol,9)。结论化合物1、4、5、6均为首次从漏芦属植物中分离得到,化合物7为首次从本植物中分离得到。     

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。     

Six new triterpenoid saponins from the root and stem bark of Cephalanthus occidentalis

From the root and stem bark of Cephalanthus occidentalis L., a common American wetland species, six new triterpenoid saponins (1 - 6), together with 29 known compounds were isolated and identified. On the basis of spectroscopic analysis and chemical degradation, the structures of new compounds were elucidated as 3-O-beta-glucopyranosylcincholic acid (1), cincholic acid 28-O-beta-glucopyranosyl ester (2), 3-O-beta-glucopyranosyl-(1-->4)-beta-fucopyranosylcincholic acid (3), 3-O-beta-glucopyranosyl-(1-->4)-beta-fucopyranosylcincholic acid 28-O-beta-glucopyranosyl ester (4), 3-O-beta-glucopyranosylcincholic acid 28-O-alpha-arabinopyranosyl-(1-->2)-beta-glucopyranosyl ester (5), and 3-O-beta-glucopyranosylquinovic acid 28-O-alpha-arabinopyranosyl-(1-->2)-beta-glucopyranosyl ester (6).     

青钱柳地上部分的化学成分研究

从青钱柳Cyclocarya paliurus(Batal)ljinskaja.地上部分分离出14个化合物,通过NMR波谱方法和理化性质考察分别鉴定为山柰酚(1),山柰酚-3-O-α-L-吡喃鼠李糖苷(2),山柰酚-3-O-β-D-吡喃半乳糖苷(3),山柰酚-3-O-β-D-吡喃葡萄糖苷(4),山柰酚-3-O-α-L-(4′′-E-p-香豆酰基)吡喃鼠李糖苷(5),青钱柳酸B(6),阿江榄仁酸(7),2α,3β,23-三羟基-12-烯-28-乌苏酸(8),2α-羟基乌苏酸(9),齐墩果酸(10),槲皮素(11),异槲皮苷(12),β-谷甾醇(13),胡萝卜苷(14)。化合物2、3、5和8为首次从青钱柳属中分离得到。     

Four new triterpenoids from the leaves of Psidium guajava

Four new triterpenoids, psiguanins A-D (1-4), along with 13 known ones (5-17), were isolated from the leaves of Psidium guajava. The structures of new compounds were determined as 2α,3β-dihydroxy-taraxer-20-en-28-oic acid (1), 2α,3β,12α,13β-tetrahydroxy-urs-28-oic acid (2), 2α,3β,12β,13β-tetrahydroxy-urs-28-oic acid (3), and 2α,3β,12β,13α-tetrahydroxy-urs-28-oic acid (4), respectively, on the basis of comprehensive spectroscopic methods and molecular modeling calculation. Among them, compound 4 was characterized as an unusual ursane-type triterpenoid with cis-fused C/D ring system.     

Phthalide derivatives with antifungal activities against the plant pathogens isolated from the liquid culture of Pestalotiopsis photiniae

Three new phthalide derivatives (1-3) named 5-(3'-methyl-2'-butenyl)-2-hydroxy-3-methoxy-4-methylbenzoic acid (1), 5-(3'-carboxyl-3'-methyl-2E-allyloxy)-3-methoxy-4-methylphthalide (2) and 5-(3',3'-dimethylallyloxy)-2-methoxycarbonyl-3-methoxy-4-methylbenzoic acid (3) together with six known phthalide derivatives named 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalide (4), zinnimidine (5), 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalide (6), 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalic acid (7), zinniol anhydride (8) and porriolide (9) were isolated from the liquid culture of the plant endophytic fungus Pestalotiopsis photiniae isolated from the Chinese Podocarpaceae plant Podocarpus macrophyllus. Their structures were elucidated by extensive spectroscopic analysis. Compounds 1-9 displayed significant antifungal activities against three plant pathogens.     

A new ellagic acid derivative from the fruits of Eucalyptus globulus Labill

Four ellagic acid derivatives have been isolated from the fruits of Eucalyptus globulus Labill., one of which is new compound, identified as 3-O-methylellagic acid 4'-O-alpha-L-2"-O-acetyl-rhamnopyranoside (1), the known compounds were identified as 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside (2), ellagic acid (3) and 3-O-methylellagic acid (4), on the basis of the analysis of 1H NMR, 13C NMR, HSQC, HMBC, IR and MS spectral data. It is alsoassignment the 13C NMR signals of 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside for the first.     

滇藏荨麻根中化学成分的分离与鉴定

目的研究荨麻属植物滇藏荨麻的化学成分。方法运用硅胶柱色谱、薄层色谱、制备薄层色谱S、ephadex LH-20柱色谱等方法进行分离纯化,通过理化性质和1H-NMR1、3C-NMR、EI-MS等数据以及与对照品对照等方法进行结构鉴定。结果从滇藏荨麻根分离得到10个化合物,分别鉴定为:豆甾-4-烯-3-酮(1)、4-羟基反式桂皮酸(2)、4-羟基苯甲醛(3)、4-甲氧基苯甲酸(4)、4-羟基苯甲酸(5)、己二酸(6)、二十四烷酸甲酯(7)、2-羟基二十四烷酸甲酯(8)、胡萝卜苷(9)、β-谷甾醇(10)。结论化合物1~10均为首次从滇藏荨麻中分离得到,其中化合物4、6~8为首次从荨麻属植物中分离得到。     

Three new triterpenoid saponins from the seeds of Aesculus turbinata

Three new triterpenoid saponins, named isoescins VIIa (1), VIa (2), and VIIIa (3), were isolated from the seeds of Aesculus turbinata and identified by spectroscopic analysis and chemical hydrolysis. Their structures were established as 21beta-O-tigloyl-28-O-acetylprotoaescigenin 3beta-O-[beta-d-galactopyranosyl(1 --> 2)][beta-d-glucopyranosyl(1 --> 4)]-beta-d-glucopyranosiduronic acid (Isoescin VIIa, 1), 21beta-O-(2-methylbutyryl)-28-O-acetylprotoaescigenin 3beta-O-[beta-d-glucopyranosyl(1 --> 2)] [beta-d-glucopyranosyl(1 --> 4)]-beta-d-glucopyranosiduronic acid (Isoescin VIa, 2), and 21beta-O-angeloyl-28-O-acetylbarringtogenol C 3beta-O-[beta-d-glucopyranosyl(1 --> 2)] [beta-d-glucopyranosyl(1 --> 4)]-beta-d-glucopyranosiduronic acid (Isoescin VIIIa, 3).     

Water-soluble constituents from the leaves of Ilex oblonga

Four new water-soluble constituents, oblongaroside A (1), oblongar ester A (2), oblongaroside B (3), and oblongaroside C (4), were isolated along with four known compounds: 4-O-beta-D-glucopyranosyl-3-hydroxybenzalcohol (5), 7-methoxyl-4-O-beta-D-glucopyranosyl-3-hydroxybenzalcohol (6), 4-O-beta-D-glucopyranosyl-3-hydroxybenzoic acid (7), and 3,4-dihydroxybenzoic acid (8) from the leaves of Ilex oblonga. Identification of their structures was achieved by 1D and 2D NMR experiments, including (1)H-(1)H COSY, NOESY, HMQC, and HMBC methods and FAB mass spectral data.     

A norsesquiterpene lactone and a benzoic acid derivative from the leaves of Cyclocarya paliurus and their glucosidase and glycogen phosphorylase inhibiting activities

Two novel compounds, 3-methoxypterolactone ( 1) and 2-amino-3,4-dihydroxy-5-methoxybenzoic acid ( 2), were isolated from leaves of Cyclocarya paliurus (Batal.) Iljinsk, together with nine known compounds: pterolactone ( 3), gallic acid ( 4), 4-hydroxy-3-methoxybenzoic acid ( 5), oleanolic acid ( 6), beta-boswellic acid ( 7), alpha-boswellic acid ( 8), beta-amyrin ( 9), beta-amyrone ( 10) and 3beta-O-trans-caffeoyl-morolic acid ( 11). The structure elucidation was based on spectroscopic methods, including two-dimensional NMR experiments ( (1)H- (1)H COSY, HMQC and HMBC). All isolated compounds were evaluated for their glycosidase and glycogen phosphorylase inhibitory activities. 2-Amino-3,4-dihydroxy-5-methoxybenzoic acid and gallic acid showed significant alpha-glucosidase and glycogen phosphorylase inhibitory activities.