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      圓葉大黃的化學(xué)成分及細(xì)胞毒活性初步研究

      2015-04-03 20:51:28付深振戴聞韜彭江南閆興麗高增平
      世界中醫(yī)藥 2015年1期
      關(guān)鍵詞:圓葉細(xì)胞毒藏藥

      付深振 戴聞韜, 費(fèi) 燁 彭江南 閆興麗 高增平

      (1 北京中醫(yī)藥大學(xué),北京,100102; 2 University of Texas Health Science Center at San Antonio,Texas 78229,USA)

      圓葉大黃的化學(xué)成分及細(xì)胞毒活性初步研究

      付深振1戴聞韜1,2費(fèi) 燁1彭江南2閆興麗1高增平1

      (1 北京中醫(yī)藥大學(xué),北京,100102; 2 University of Texas Health Science Center at San Antonio,Texas 78229,USA)

      目的:研究圓葉大黃(RheumTataricumL.F.)的化學(xué)成分及主要成分的細(xì)胞毒活性。方法:采用silica gel、Sephadex LH-20、HPLC等色譜法對圓葉大黃80﹪乙醇提取物進(jìn)行分離純化,通過LC/MS,1H-NMR,13C-NMR,2D-NMR和薄層色譜檢識(shí)等技術(shù),結(jié)合相關(guān)文獻(xiàn)確定化合物的結(jié)構(gòu);運(yùn)用SRB法對分離得到的主要成分進(jìn)行Hela細(xì)胞的細(xì)胞毒活性篩選。結(jié)果:從圓葉大黃中分離鑒定出11個(gè)化合物,分別為大黃酚(1),大黃素(2),大黃素甲醚(3),蘆薈大黃素(4),Rheosmin(5),1,3,8-trihydroxyanthraquinone(6),β-谷甾醇(7),胡蘿卜苷(8),大黃素-1-O-β(6'-O-acety)glucopyranoside(9),大黃素甲醚-8-O-β(6'-O-acety)glucopyranoside(10),大黃酚-1-O-β(6'-O-acety)glucopyranoside(11);對化合物4、5、6、9、10、11進(jìn)行了細(xì)胞毒活性篩選,其中化合物4、6、9、10、11均對Hela細(xì)胞具有細(xì)胞毒活性,化合物5對Hela細(xì)胞無細(xì)胞毒活性。結(jié)論:8個(gè)化合物(化合物4-11)均為首次從該植物中分離得到,5個(gè)化合物對Hela細(xì)胞有細(xì)胞毒活性,且化合物5,6,9,10,11均為首次對Hela細(xì)胞進(jìn)行細(xì)胞毒活性篩選。

      圓葉大黃;化學(xué)成分;細(xì)胞毒活性

      圓葉大黃(RheumTataricumL.F.)為蓼科(Polygonaceae)大黃屬多年生中型草本植物,別名韃靼大黃,在我國主要分布于新疆西部地區(qū),另在阿富汗、俄羅斯、哈薩克斯坦也有分布[1],在俄羅斯當(dāng)?shù)乜勺鍪卟耸秤肹2],在我國尚未有食用和藥用價(jià)值的相關(guān)報(bào)道。但是在西藏市場上發(fā)現(xiàn)其作為藏藥塔黃有銷售。塔黃為蓼科大黃屬高山大黃[3-5](RheumnobileHook.f.et Thoms)的根和根莖,產(chǎn)于西藏喜馬拉雅山麓及云南西北部,在藏醫(yī)中用于治療黃水[3,6]、惡性腹水、腎水腫、“培根”病[7-8]等,在印度、錫金等國也被廣泛作為藥用[9]。對于究竟圓葉大黃能否代替塔黃入藥尚未見相關(guān)研究報(bào)道,因此本課題組在研究藏藥塔黃的基礎(chǔ)上初步探索了圓葉大黃的化學(xué)成分和其主成分的細(xì)胞毒活性,為全面對比藏藥塔黃與圓葉大黃的化學(xué)成分和藥理活性,確保藏藥塔黃的用藥安全和有效奠定基礎(chǔ)。

      1 藥材、儀器及試藥

      藥材:購自西藏拉薩,經(jīng)北京中醫(yī)藥大學(xué)魏勝利副教授鑒定為蓼科大黃屬圓葉大黃RheumTataricumL.F.的根莖。儀器:Bruker-Avance VNS-600和Bruker AVANCE-III-500 mHz型核磁共振儀,Waters高效液相色譜儀,薄層色譜硅膠及柱色譜硅膠均為青島海洋化工廠生產(chǎn),AB-8型大孔樹脂為天津南開大學(xué)化工廠生產(chǎn),Sanyo CO2Incubator,Molecular Devices Spectra max。試劑:所用試劑均為分析純。Hela細(xì)胞購自于American Type Culture collection,Basal Medium eagle,trypsin購自于Sigma Life Science。

      2 提取和分離

      藥材粗粉10 kg,80%乙醇回流提取三次,2 h/次。減壓回收溶劑得到浸膏,加水分散,依次用石油醚、氯仿、乙酸乙酯、正丁醇萃取,分別得到五個(gè)部位。石油醚部位,經(jīng)反復(fù)硅膠柱色譜分離及重結(jié)晶,得到化合物1(891.4 mg),化合物2(16.5 mg),化合物3(86.6 mg),化合物4(41 mg),化合物5(5 mg)。乙酸乙酯部位,經(jīng)反復(fù)硅膠柱色譜,HPLC以及重結(jié)晶,得到化合物6(25 mg),化合物7(10 mg),化合物8(84.4 mg),化合物9(30 mg),化合物10(20 mg),化合物11(5 mg)。

      3 結(jié)構(gòu)鑒定

      化合物1,化合物2,化合物3,化合物7,化合物8經(jīng)與對照品進(jìn)行TLC對比(三個(gè)溶劑展開系統(tǒng)),分別為大黃酚,大黃素,大黃素甲醚,β-谷甾醇和胡蘿卜苷,化合物5經(jīng)1H-NMR(600 mHz,DMSO)確定其結(jié)構(gòu)為Rheosmin?;衔?:黃色結(jié)晶。1H-NMR(600 MHz,DMSO)δ:7.261(1H,s,H-2),7.651(1H,s,H-4),7.684(1H,d,J=7.2 Hz,H-5),7.778(1H,t,J=7.8Hz,H-6),7.345(1H,d,J=8.4 Hz,H-7)。13C-NMR(600 MHz,DMSO)δ:161(C-1),120.5(C-2),153.7(C-3),117.1(C-4),119.2(C-5),137.4(C-6),123.7(C-7),161(C-8),191.4(C-9),181(C-10),114.5(C-11),135.1(C-12),114.4(C-13),136.5(C-14)。以上數(shù)據(jù)與蘆薈大黃素文獻(xiàn)報(bào)道的數(shù)據(jù)一致[10-11],故鑒定該化合物為蘆薈大黃素?;衔?:黃色粉末。1H-NMR(600 MHz,DMSO)δ:7.748(1H,s,H-2),8.134(1H,s,H-4),7.737(1H,d,J=6.6 Hz,H-5),7.827(1H,t,J=6.6 Hz,H-6),7.411(1H,d,J=7.2 Hz,H-7)。13C-NMR(600 MHz,DMSO)δ:161.6(C-1),124.4(C-2),166.2(C-3),119.4(C-4),119.9(C-5),138.1(C-6),125.2(C-7),161.8(C-8),191.9(C-9),181.8(C-10),111.8(C-11),133.8(C-12),119.1(C-13),139.7(C-14)。以上數(shù)據(jù)與1,3,8-trihydroxyanthraquinone的文獻(xiàn)報(bào)道一致[12],故鑒定該化合物為1,3,8-trihydroxyanthraquinone?;衔?:黃色粉末。ESI-MS:m/z 474[M]+,497[M+Na]+;1H-NMR(600 MHz,DMSO)δ:6.949(1H,s,H-2),7.289(1H,s,H-4),7.445(1H,s,H-5),7.147(1H,s,H-7),5.218(1H,d,H-1'),3.450(1H,dd,J=5.4,7.2Hz,H-2'),3.29-3.376(H-3',H-4' overlapped with H2O),3.686(1H,J=1.2,7.2,10.2 Hz,H-5'),4.100(1H,J=6.0,10.2Hz,H-6'),4.309(1H,J=7.2,10.2Hz,H-6')。以上數(shù)據(jù)與emodin-8-O-β(6'-O-acety)glucopyranoside的文獻(xiàn)報(bào)道一致[13],故鑒定該化合物為emodin-8-O-β(6'-O-acety)glucopyranoside。化合物10:黃色粉末。ESI-MS:m/z 488[M]+,511[M+Na]+;1H-NMR(600 MHz,DMSO)δ:7.151(1H,s,H-2),7.392(1H,s,H-4),7.463(1H,s,H-5),7.126(1H,s,H-7),5.219(1H,d,J=6.6 Hz,H-1'),3.482(1H,dd,J=4.3,6.6 Hz,H-2'),3.300(1H,t,J=4.3 Hz,H-3'),3.243(H-4',overlapped with water),3.752(1H,ddd,J=2.6,6.2,9.3 Hz,H-5'),4.056(1H,dd,J=6.2,9.3 Hz,H-6'),4.348(1H,dd,J=2.6,9.3 Hz,H-6')。以上數(shù)據(jù)與physcion-1-O-β(6'-O-acety)glucopyranoside的文獻(xiàn)報(bào)道一致[14],故鑒定該化合物為physcion-1-O-β(6'-O-acety)glucopyranoside ?;衔?1:黃色粉末。ESI-MS:m/z 458[M]+,481[M+Na]+;1H-NMR(600 MHz,DMSO)δ:2.007(3H,s,-OAc),2.48(3H,s,Me),7.497(1H,s,H-2),7.725(1H,s,H-4),7.633(1H,d,J=0.6 Hz,H-5),7.725(1H,br.s,H-6),7.317(1H,d,J=6.0 Hz,H-7),5.219(1H,d,J=6.6 Hz,H-1'),3.489(1H,dd,J=4.2,6.6 Hz,H-2'),3.357(1H,t,J=4.2 Hz,H-3'),3.250(H-4',overlapped with H2O),3.723(1H,ddd,J=2.4,6.0,9.0 Hz,H-5'),4.050(1H,dd,J=6.0,9.0Hz,H-6'),4.362(1H,dd,J=2.4,9.0 Hz,H-6'),12.940(s,OH-8)。以上數(shù)據(jù)與,chrysophanol-1-O-β(6'-O-acety)glucopyranoside的文獻(xiàn)報(bào)道一致[13],故鑒定該化合物為chrysophanol-1-O-β(6'-O-acety)glucopyranoside。

      4 細(xì)胞毒活性篩選

      4.1 試驗(yàn)方法 Hela細(xì)胞BME(Basal Medium Eagle)培養(yǎng)基,置于37 ℃細(xì)胞培養(yǎng)箱中24 h后,分別加入濃度為20 μg/mL的化合物4,化合物5,化合物6,化合物9,化合物10,化合物11,DMSO為對照。給藥后置于37 ℃細(xì)胞培養(yǎng)箱中48 h,然后采用SRB法[15-16]進(jìn)行細(xì)胞毒活性篩選及分析。

      4.2 實(shí)驗(yàn)結(jié)果 經(jīng)SRB法分析,結(jié)果化合物5對Hela細(xì)胞沒有細(xì)胞毒活性,另外5個(gè)化合物對Hela細(xì)胞有不同程度的細(xì)胞毒活性。其中活性最強(qiáng)的是化合物4,細(xì)胞數(shù)為對照(DMSO)的20.6%,活性最弱的為化合物9,細(xì)胞數(shù)為對照的90.1%,化合物6,10和11的細(xì)胞數(shù)分別為對照的35.5%,52.57%和53.0%。

      5 總結(jié)與討論

      通過對圓葉大黃的化學(xué)成分進(jìn)行初步研究,共得到11個(gè)化合物,其中8個(gè)化合物(化合物4-11)為首次從該植物中分離得到,進(jìn)而為圓葉大黃與塔黃的化學(xué)成分對比提供了部分依據(jù);對其中的六個(gè)化合物進(jìn)行針對Hela細(xì)胞的細(xì)胞毒活性的初步篩選,SRB分析結(jié)果為其中化合物4、6、9、10、11對Hela細(xì)胞有不同程度的細(xì)胞毒活性,化合物5對Hela細(xì)胞無細(xì)胞毒活性,這為圓葉大黃與塔黃的藥理活性對比提供依據(jù);五個(gè)對Hela細(xì)胞有細(xì)胞毒活性的化合物均為蒽醌或其苷類,這將為進(jìn)一步的研究蒽醌及其苷類化合物的細(xì)胞毒活性奠定基礎(chǔ)。總之,通過對圓葉大黃化學(xué)成分及部分成分的細(xì)胞毒活性研究,為其進(jìn)一步的與塔黃進(jìn)行比較研究奠定基礎(chǔ),從而確定圓葉大黃是否可以代替藏藥塔黃使用,以確保藏藥塔黃的市場規(guī)范和用藥安全。

      [1]中國植物志編輯委員會(huì).中國植物志[M].北京:科學(xué)出版社,1998:199.

      [2]Chumbalov,T.K.Results of studying the chemical composition of Kazakhstan vegetable raw material[J].Khimiyai Khimicheskaya Tekhnologiya,1970,71(1):150.

      [3]國家中醫(yī)藥管理局編委會(huì).中華本草·藏藥卷[M].上海:科學(xué)技術(shù)出版社,1999:260.

      [4]Bo Song,Zhang Zhi-qing,Jürg St?cklin,et al.Multifunctional bracts enhance plant fitness during flowering and seed development in Rheum nobile(Polygonaceae),a giant herb endemic to the high Himalayas[J].Oecologia,2013(172):359-370.

      [5]Ichiro Terashima,Takehiro Masuzawa,Hideaki Ohba.Photosynthetic characteristics of a giant alpine plant,Rheum nobile Hook.f.et Thoms and of some other alpine species measured at 4300 m,in the Eastern Himalaya,Nepal[J].Oecologia,1993,95(2):194-201.

      [6]阿召.淺論藏醫(yī)“黃水證”[J].西部中醫(yī)藥,2011,24(8):63-64.

      [7]宇妥·云丹貢布.四部醫(yī)典[M].上海:上??茖W(xué)技術(shù)出版社,1987:77.

      [8]才項(xiàng)仁增.淺談藏醫(yī)三因?qū)W之培根及培根病[J].西部中醫(yī)藥,2011,24(7):58-60.

      [9]P.Prasad,L.K.Rai,H.Birkumar Singh.Folk Medicinal Plants in the Sikkim Himalayas of India[J].Asian Folklore Studies,2002(61):295-310.

      [10]Danielsen,Knut;Aksnes,Dagfinn W.NMR study of some anthraquinones from Rhubarb.Magnetic Resonance in Chemistry,1992,30(4):359-360.

      [11]魏玉輝,張承忠,李沖,等.光莖大黃化學(xué)成分研究(Ⅰ)[J].中草藥,2004,35(7):732-734.

      [12]Anslow,W.K.B,reen,J,Raistrick,H.1,3,8-trihydroxyanthraquinone[J].Journal of the chemical society,1940:427-428.

      [13]Ya Qinshi,Toshio Fukai et al.Cytotoxic and DNA damage-inducing actives of low molecular weight phenols from Rhubarb.Anticaner research,2001,21(4a):2847.

      [14]Qi Huan.Three new anthraquinones from Polygonum cillinerve .Chinese chemical letters,2005,16(8):1050.

      [15]Philip Skehan,Ritsa Storeng et al.New colorimetric cytotoxicity assay for anticancer-drug screening[J].Journal of the National Cancer Institute,1990,82(13):1107-1112.

      [16]Vichai V,Kirtikara K.Sulforhodamine B colorimetric assay forcytotoxicity screening[J].Nature Protocol,2006,1(3):1112-1116.

      (2014-03-09收稿 責(zé)任編輯:徐穎)

      Primary Study on Chemical Constituents of Rheum Tataricum L.F.and Their Cytotoxic Activity

      Fu Shenzhen1,Dai Wentao1,2,F(xiàn)ei Ye1,Peng Jiangnan2,Yan Xingli1,Gao Zengping1

      (1BeijingUniversityofChineseMedicine,Beijing100102,China; 2UniversityofTexasHealthScienceCenteratSanAntonio,Texas78229,USA)

      Objective: To investigate the chemical constituents of the Rheum Tataricum and evaluate some of the compounds for cytotoxic activity against Hela cell.Methods:Silica gel,Sephadex LH-20 column,chromatography High Performance Liquid Chromatography methods were used to do isolation.The structures of isolates were confirmed by spectral (LC/MS,1H-NMR,13C-NMR,2DNMR,thin-layer chromatograph) analysis and by comparison with the literature reports; Cytotoxic activities were determined by the SRB method.Results:Eleven compounds were gained and they were chrysophanol (1),emodin(2),Physcion (3),Aloe-emodin (4),Rheosmin (5),1,3,8-trihydroxyanthraquinone (6), Sitosterol (7), Daucosterol (8),emodin8-O-β(6'-O-acety)glucopyranoside (9),physcion1-O-β(6'-O-acety)glucopyranoside (10),chrysophanol1-O-β(6'-O-acety)glucopyranoside (11); six compounds were evaluated for cytotoxic activities,five of them showed cytotoxic activity against Hela cell,and they were Aloe-emodin,1,3,8-trihydroxyanthraquinone,emodin8-O-β(6'-O-acety)glucopyranoside,physcion1-O-β(6'-O-acety)glucopyranoside,chrysophanol1-O-β(6'-O-acety)glucopyranoside,rheosmin has no activity.Conclusion:Eight (compound 4-11)of them are isolated from Rheum nobile for the first time; five of the compounds show cytotoxic activities,compound5,6,9,10,11are evaluated for cytotoxic activities against Hela cell for the first time.

      Rheum Tataricum; Chemical consitutents; Cytotoxic activity

      R28

      A

      10.3969/j.issn.1673-7202.2015.01.029

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