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1.
赵韵宇  孙伟  彭崇胜  李志勇 《生物磁学》2012,(26):5001-5004
目的:对来自海洋软珊瑚的链霉菌6-1(Streptomyces variabilisstrain6-1)进行次级代谢产物的分离和鉴定,寻找具有生物活性的化合物,为人类健康服务。方法:采用液体培养基对分自海洋软珊瑚Scleronephthya sp中的链霉菌6.1(Streptomyces vafiabilisstrain6-1)进行发酵培养,用乙酸乙酯对发酵液进行萃取;采用半制备高效液相色谱(semi-preparative HPLC)分离方法对乙酸乙酯萃取物进行分离纯化,得到单体化合物;运用电喷雾质谱(ESI—MS)、核磁共氢振(1HNMR)、核磁共振碳谱(13C NMR)和物理性质对所得单体化合物进行结构鉴定。结果:从海洋链霉菌6-1(strain6-1)发酵液的乙酸乙酯萃取物中分离得到3个单体化合物,分别鉴定为:7,4’-二羟基异黄酮(1)、5,7,4’-三羟基异黄酮(2)和丁烯酸内酯-I(3)。结论:丁烯酸内酯.I是从链霉菌属首次分离得到,化合物1和2均是从Streptomyces variabilis中首次分离得到;变异链霉菌6-1(Stmptomyces variabilis strain6-1)可以作为活性化合物3(丁烯酸内酯-I)的重要来源。  相似文献   

2.
采用正相硅胶色谱柱、Sephadex LH-20以及制备HPLC等色谱方法对羊耳菊进行分离纯化,并通过理化常数和波谱数据鉴定其化学结构。深入研究羊耳菊干燥全草的咖啡酰基奎宁酸类化学成分。从羊耳菊中分离得到8个咖啡酰基奎宁酸类化合物,分别为1,5-O-二咖啡酰基奎宁酸(1)、1,3,5-O-三咖啡酰基奎宁酸(2)、3,5-O-二咖啡酰基奎宁酸甲酯(3)、3,4-O-二咖啡酰基奎宁酸甲酯(4)、3,4-O-二咖啡酰基奎宁酸乙酯(5)、4,5-O-二咖啡酰基奎宁酸乙酯(6)、3,5-O-二咖啡酰基奎宁酸(7)、3,4-O-二咖啡酰基奎宁酸(8)。化合物1-3为从该植物中首次分离得到,4-6从该属植物中首次分离得到。  相似文献   

3.
亚麻根化学成分的研究   总被引:4,自引:0,他引:4  
采用硅胶柱色谱法从亚麻根中分得5个化合物,通过波谱分析和甲醇酸水解鉴定了它们的结构,分别为Linum cerebrosideA(1),1-O-β-D-glueopyranosyl-(2S,3R,4E,8Z)-2[(2(R)-hydroxyhexadecanoyl)amido]-4,8-octadecadiene-1,3-diol(2),胡萝卜苷(4),花生酸(5)和ent-kaurane-3-oxo-16α-17-diol(6)。其中化合物1为新化合物,化合物2、5、6均为首次从该植物中分离鉴定。  相似文献   

4.
合欢花化学成分的研究(Ⅱ)   总被引:13,自引:0,他引:13  
从合欢花甲醇提取物的石油醚和乙酸乙酯部分分离得到7个化合物,经化学方法和波谱法鉴定为:二十四烷酸(1)、二十八烷醇(2)、α-菠甾醇(3)、山奈酚(4)、槲皮素(5)、α-菠甾醇-3-O-β-D葡萄糖苷(6)、山奈酚-3-O-α-L鼠李糖苷(7).除二十四烷酸以外,以上化合物均为首次从该植物中获得.  相似文献   

5.
吕敏  周媛媛  马向华  沈捷 《生物磁学》2009,(16):3075-3077,3080
目的:研究大黄酸对白细胞介素-6(IL-6)刺激的血管平滑肌细胞(VSMCs)增殖效应的影响。方法:(1)采用原代细胞培养方法建立大鼠VSMCs细胞模型,形态学倒置相差显微镜和透射电镜观察的方法进行细胞鉴定;(2)以四甲基偶氮唑盐(MTT)比色法观察不同浓度和不同时间的IL-6对VSMCs增殖能力的影响,以及不同浓度的大黄酸作用12小时对IL-6效应的干预作用。结果:IL-6能显著促进VSMCs增殖,促增殖效应在48h末达峰值且IL-6浓度在0~50.0ng/ml之间呈剂量依赖关系,差异具有统计学意义(P〈0.05);而大黄酸可抑制IL-6诱导的VSMCs的增殖效应(P〈0.01)。结论:IL-6可刺激VSMCs增殖,而大黄酸能够抑制IL-6的促增殖作用,有望用于干预动脉粥样硬化的发生发展,其机制可能与线粒体依赖的凋亡机制有关。  相似文献   

6.
利用制备型高效液相、凝胶层析、制备型薄层色谱等方法对无孢灵芝龙芝2号的固体发酵菌丝体进行分离纯化,通过波谱分析,化合物分别鉴定为灵芝酸P(1),灵芝酸T1(2),灵芝酸Mk(3),灵芝酸S(4),灵芝酸T(5),ganodermanondiol(6),灵芝酸Me(7),5α, 8α-epidioxyergosta-6, 22-dien-3β-ol(8),灵芝酸R(9),lanosta-7, 9(11), 24-trien-3α-hydroxy-26-oic acid(10),ganodermenonol(11)。其中灵芝酸T1为首次发现的天然产物。体外细胞实验证实,11种化合物对肿瘤细胞L1210的增殖均有很强的抑制作用,其增殖抑制的IC50值均在39.69μmol/L以下。  相似文献   

7.
从元谋栽培印楝Azadirachta indica的枝叶中分离得到15个化合物,结构类型有三萜、倍半萜、甾体等。经波谱解析鉴定为nimbin(1),6-deacetylnimbin(2),6-deacetylnimbinene(3),nimbinene(4),azadiradi-one(5),7-acetoxy-elema-1,3-dien-8-ol(6),1-naphthalenone(7),acarusnol(8),colvane-2β,9α-diol(9),乌苏酸(10),马斯里酸(11),2α-羟基乌苏酸(12),猕猴桃酸B(13),2α,3α,4β-trihydroxypregnan-16-one(14),2β,3β,4β-trihydroxypregnan-16-one(15)。化合物6~15为首次从该植物中分离得到。  相似文献   

8.
通过使用乙酸乙酯溶剂对沉水植物苦草(Vallisneria natans)全草进行超声连续提取,采用硅胶柱色谱法和光谱分析法分离和鉴定化学成分。从苦草中分离到6个化合物:6,10,14-三甲基-2-十五酮(1)、棕榈酸(2)、4,22-二烯-3β-豆甾酮(3)、5α,豆甾烷-3,6-二酮(4)、硬脂酸(5)、棕榈酸乙酯(6)。化合物1—6为首次从该植物中发现。  相似文献   

9.
山木通的化学成分研究   总被引:1,自引:0,他引:1  
目的:对毛茛科铁线莲属植物山木通的化学成分进行提取、分离和鉴定。方法:用不同浓度乙醇提取,利用硅胶、SephadexLH-20、ODS柱色谱法对山木通的化学成分进行分离,根据理化性质和MS、NMR光谱数据进行结构鉴定。结果:经鉴定得到7个化合物,分别为β-谷甾醇(Ⅰ);正二十二烷(Ⅱ);3-羰基齐墩果烷(Ⅲ);正十六烷酸(Ⅳ);正二十六烷酸(Ⅴ);丁香酸(Ⅵ);5-羟基4-氧代戊酸(Ⅶ)。结论:所得化合物均为首次从该种植物中得到。  相似文献   

10.
诺丽青果化学成分研究   总被引:1,自引:0,他引:1  
干燥诺丽青果粉末95%乙醇提取物的正丁醇萃取部分经硅胶、Sephadex LH-20和LiChmprep RP-18等材料分离,波谱学方法鉴定了8个化合物,分别为乌苏酸(1)、6,7-二羟基香豆素(2)、胡萝卜甙(3)、车叶革甙(4)、Borreriagenin(5)、去乙酰车叶草甙(6)、O-β-D-glucopyranoside scopolln(7)、车叶草酸(8)。其中化合物7为首次从该种中分到。  相似文献   

11.
采用Diaion HP-20、Toyopearl HW-40、Sephadex LH-20和硅胶等多种柱色谱对蔓生卷柏的化学成分进行分离纯化,结合现代波谱技术分离鉴定了5个化合物,分别为邻羟基苯丙酸(1)、邻羟基肉桂酸(2)、5-羟基香豆素(3)、阿曼托双黄酮(4)和(4E,6Z)-2,7-二甲基-8-羟基-辛二烯酸(5)。这些成分均为首次从该植物中分离得到。  相似文献   

12.
Two new iridoid glucosides, namely, 2'-O-[(2E,4E)-5-phenylpenta-2,4-dienoyl]mussaenosidic acid (1; mussaenosidic acid = [1S-(1alpha,4aalpha,7alpha,7aalpha)]-1-(beta-D-glucopyranosyloxy)-1,4a,5,6,7,7a-hexahydro-7-hydroxy-7-methylcyclopenta[c]pyran-4-carboxylic acid) and 2'-O-(4-methoxycinnamoyl)mussaenosidic acid (2), were isolated from the aerial parts of the mangrove plant Avicennia marina. Beside that, one known iridoid glucoside, 2'-O-coumaroylmussaenosidic acid (3) and four known flavones (flavone = 2-phenyl-4H-1-benzopyran-4-one) including 4',5-dihydroxy-3',7-dimethoxyflavone (4), 4',5-dihydroxy-3',5',7-trimethoxyflavone (5), 4',5,7-trihydroxyflavone (6), and 3',4',5-trihydroxy-7-methoxyflavone (7) were also isolated and identified. The structures of these compounds were elucidated by NMR spectroscopy and by low- and high-resolution mass spectrometry. The chemotaxonomic significance of these findings was discussed. In addition, each isolated compound was evaluated for the ability of alpha,alpha-diphenyl-beta-picrylhydrazyl (DPPH) radical-scavenging activity.  相似文献   

13.
通过药理实验确定了鹊肾树树皮的乙酸乙酯萃取物为抗炎活性部位,并利用色谱技术从该部位中分离得到了7个化合物,通过UV、IR、NMR、MS等现代谱学方法鉴定化合物的结构分别为:丁二酸(1)、6-乙基-5-羟基-2,7-二甲氧基-1,4-萘醌(2)、3β,20-二羟基-5β-孕甾烷(3)、5-羟基麦芽酚(4)、双[5-甲酰基...  相似文献   

14.
Seven acylated cyanidin 3-sambubioside-5-glucosides were isolated from the flowers of three garden plants in the Cruciferae. Specifically, four pigments were isolated from Lobularia maritima (L.) Desv., together with a known pigment, as well as, three pigments from Lunaria annua L., and two known pigments from Cheiranthus cheiri L. These pigments were determined to be cyanidin 3-O-[2-O-((acyl-II)-(beta-d-xylopyranosyl))-6-O-(acyl-I)-beta-d-glucopyranoside]-5-O-[6-O-(acyl-III)-beta-d-glucopyranoside], in which the acyl-I group is represented by glucosyl-p-coumaric acid, p-coumaric acid and ferulic acid, acyl-II by caffeic acid and ferulic acid, and acyl-III by malonic acid, respectively. The distribution and biosynthesis of acylated cyanidin 3-sambubioside-5-glucosides are discussed according to the variations of acylation and glucosylation at their 3-sambubiose residues.  相似文献   

15.
肾蕨的化学成分研究   总被引:2,自引:0,他引:2  
从肾蕨乙醇提取物中分离得到6个化合物,根据理化和光谱分析,鉴定为β-谷甾醇(1)、羊齿-9(11)-烯(2)、齐墩果酸(3)、肉豆蔻酸十八烷基酯(4)、正三十一烷酸(5)和正三十烷醇(6),化合物3~6为首次从该植物中分离得到。  相似文献   

16.
Fourteen compounds were isolated from the leaves of Pseudotaxus chienii (Cheng) Cheng which is uniquely indigenous to China, and their structures were identified mainly by spectrum analyses. Among them, 13 known compounds were determined as: 2-guaiacylpropane-1, 3-diol (1), vanillic acid (2), 3-methoxy-4-hydroxy cinnamic acid (3). 3. 5-dimethoxy-phenol (4), taxicatin (5), 5-oxymaltol (6), quercetin-3-rhamnoside (7), (±)-catechin (8), ecdysterone (9), β-sitosterol (10), D-glucose (11), (±)-10-nonacosanol (12) and octacosanoic acid (13). All these compounds butβ-sitosterol were isolated from this plant for the first time. Compounds 1 and 6 have never been reported in plant kingdom. Another compound was tentatively established as a new compound, named pseudotaxlactone (14).  相似文献   

17.
Three new flavonoids: 5-hydroxy-7-(3-methyl-2,3-epoxybutoxy)flavanone,5-hydroxy-3,8-dimethoxy 7-(3-methyl-2,3-epoxybutoxy)flavone and 4′-hydroxy-5-methoxy-7-(3-methyl-2,3-epoxybutoxy)flavone were isolated and identified from the aerial parts of Achyrocline flaccida. Tamarixetin, gnaphaliin, isognaphaliin, 5,7,8-trihydroxy-3-methoxyflavone, chrysoeriol, galangin 3-methyl ether, naringenin 5-methyl ether, caffeic acid, chlorogenic acid and isochlorogenic acid were also isolated.  相似文献   

18.
综合使用硅胶柱色谱、HP20大孔树脂柱色谱、ODS反相柱色谱及Sephadex LH-20凝胶柱色谱等色谱技术对木荷(Schima superba)茎皮进行分离纯化,并根据化合物理化性质以及应用MS、NMR技术对分离得到的化合物进行结构鉴定。从木荷中分离得到9个化合物,分别鉴定为三十烷酸(1)、棕榈酸(2)、Dodecanoic acid(3)、松脂素(4)、槲皮素(5)、山柰酚(6)、Americanin A(7)、槲皮素-3-O-β-D-葡萄糖苷(8)及槲皮素-3-O-α-L-鼠李糖苷(9)。化合物1~4 为首次从木荷中分离得到,化合物5、7、9 为首次从木荷属植物中分离得到。  相似文献   

19.
Ten triterpenoids were isolated from the ethanol extract of the roots of Tripteryglum regeli collected from Jilin Province, north-eastern China. They were identified as wilforlide A(1), wilforlide B(2), regelide (3) 3β-hydroxy-olean-ll,13(18)-diene (4), orthosphenic acid (5), salaspermic acid (6), 3-epikatonic acid(7), maytenfolic acid (8), 3β-acetyl-oleanolic acid (9), and celastrol (19), by spectroscopic analyses and chemical correlations. Compound 3—10 were isolated from T. regeli for the first time, among them regelide 3 was a new comound and its structure was elucidated to be 3-keto-22α-hydroxy-olean-ll,13(18)-dien-29-oic acid(29, 22α)-lactone. 3-epikatonic acid(7)showed obvious spermicidal effect, while cealstrol (10)revealed significant immunosuppressive activity.  相似文献   

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