简介:
简介:合成了一种未见报道的标题化合物((C5N2H6)3(C5N2H7)3[(PO4)Mo12O36]·2H2O,Mr=2403.00)并得到单晶,晶体衍射实验发现其属于单斜晶系,P2(1)/n空间群,晶体学参数:a=13.316(3),b=22.414(5),c=20.063(4),α=90.00(4)°,β=100.743(3)°,γ=90.00°,V=5883(2)3,Z=4,Dc=2.713Mg/m3,μ(MoKα)=2.608mm-1,F000=4604,最终R=0.0596,wR=0.1345,GoF=1.042.配体由由簇阴离子[(PO4)Mo12O36]3-之间通过端基氧与2-氨基吡啶形成氢键而相互连接,中间填充了一些水分子及2-氨基吡啶.
简介:利用水热法首次合成了具有两种配位环境Cd原子的新型杂多蓝化合物[NH3(CH2)2NH3]5[Cd(H2O)][CdMo12^vO30(HPO4)6(H2PO4)2]·5H2O.通过元素分析、ICP、TG和X射线单晶衍射确定了其组成,使用IR和EPR进行了结构表征.通过N2吸附脱附测定了比表面积和孔径,为催化研究提供了基础数据.结果表明:该晶体为三斜晶系,P-1,空间群;晶胞参数a=1.2002(2)nm,b=1.4651(3)nm,c=2.1192(4)nm,V=3.5642(12)nm^3,p=83.01(3)°,Z=2,F(000)=2932,R1=0.0300,wR2=0.0716.
简介:摘要目的观察蓝萼甲素预处理对H2O2诱导H9c2心肌细胞损伤模型的保护作用,并采用网络药理学方法预测蓝萼甲素抗H9c2心肌细胞凋亡的作用机制。方法将H9c2心肌细胞按随机数字表法分为空白对照组、模型组及蓝萼甲素低、中、高剂量组。空白对照组使用无血清培养液处理。模型组采用无血清培养4 h后,加入250 μmol/L H2O2干预6 h。蓝萼甲素低、中、高剂量组分别给予蓝萼甲素0.125、0.250、0.500 μg/ml预处理4 h后,加入浓度为250 μmol/L H2O2干预6 h。采用MTT法检测心肌细胞活力,观察细胞形态,采用Annexin Ⅴ-FITC/PI荧光双染及Hoechst 33258荧光染色检测细胞凋亡情况。通过Pubchem数据库获得蓝萼甲素的化学结构式,使用Swiss Target Prediction和Pharmmapper平台预测蓝萼甲素潜在靶点,利用GeneCards数据库筛选蓝萼甲素抗H9c2心肌细胞凋亡的作用靶点。采用Cytoscape软件构建蓝萼甲素作用的靶点网络,通过String数据库和Cytoscape软件绘制蛋白相互作用网络,并用Metascape数据库对靶点进行GO及KEGG通路富集分析。结果与模型组比较,蓝萼甲素低、中、高剂量组H9c2心肌细胞活力[(66.56±6.51)%、(79.21±6.89)%、(94.06±5.19)%比(51.75±4.14)%]升高(P<0.01),细胞凋亡率[(24.12±4.71)%、(17.42±4.39)%、(7.65±1.56)%比(36.73±5.65)%]降低(P<0.01)。网络药理学分析结果提示,蓝萼甲素有22个与抗H9c2心肌细胞凋亡相关的靶点,主要调节氧化应激、细胞迁移、激酶结合活性等,可调节MAPK1、VEGFA、MMP9、NOS3、MMP2、MAPK14等靶点通路,发挥抗H9c2心肌细胞凋亡作用。结论蓝萼甲素预处理对H2O2诱导H9c2心肌细胞损伤有保护作用,其机制可能通过多靶点-多途径发挥抗氧化应激和减少细胞凋亡的作用。
简介:利用水热方法制备了一个新的过渡金属镉配合物[Cd(1,3-BDC)(L)(H2O)2]·H2O(1,3-H2BDC=间苯二甲酸,L=2-(3-吡啶基)-1H-苯并咪唑),并通过元素分析、红外光谱和X-射线单晶衍射方法确定了该配合物的晶体结构.结构分析表明该配合物属于单斜晶系,P21/c空间群,晶胞参数a=1.01641(6)nm,b=2.08842(12)nm,C=1.00l38(6)nm,β=106.3360(10)°,V=2.0398(2)nm3,Z=4,R1=0.0207,wR2=0.494.配合物中CdⅡ“离子与L配体的1个吡啶N原子、1,3-BDC的4个氧原子和2个配位水的O原子配位,形成七配位的扭曲十面体结构.配体1,3-BDC的桥连相邻的CdⅡ离子形成一维聚合物链,相邻链间通过氢键和π…π作用形成三维超分子网络,并对该配合物的热稳定性和荧光性质进行了研究.
简介:[Co3(1,2-S2C6H4)3(PPh3)3][CoBr3(DMF)].sol(1,sol=CHCl3,O(C2H5)2,H2O)wasobtainedfromthereactionofCoBr(PPh3)3withNa2(S2C6H4)inchloroform.TheCo3coreinthecationof1exhibitsametal-metalbondedisoscelestriangle,inwhichthetwolongerCo-CobondsarebothbridgedbyS2C6H4ligandsontwosidesofthetriangleplanerespectively,whilethebottomshortCo-CobondisbridgedbythethirdbidentateS2C6H4ligand.Aseriesofpolynu-clearcobaltclustercompoundswithphosphine,thiolateand/orsulphurligandswerepreparedbylowoxidationstateCo+withthiolatesinorganicsolvents.Thesetri-,tetra-,hexa-,heptanuclearclustercompounds1-8withvarioustypesofcrystalstructurescanbeviewedasthecondensedpolynuclearcobaltcomplexesthatthecobaltatomframeworkswithsulphurbridgedwerebuiltthroughthesmalltriangularunitsof[Co3S3nL3](n=1,2)withorwithout[CoL](L=PR3,Br,Cl,5-C5H5)fragments.
简介:Aseriesofnovel(S,S)-2,8-diazabicyclo[4.3.0]nonanecontainingbenzimidazolemoietywassynthesizedandtheirstructuresweredeterminedby1HNMRandHRMS.ThebiologicalactivityresultsshowedthatthesecompoundspossessedmoderateantifungalactivitytosomeplantpathogenousfungiandmoderateinsecticidalactivityagainstMythimnaseparataWalkerandCulexpipienspallens.Compounds6eand6fexhibitedgoodantibacterialactivityagainstSclerotiniasclerotiorum,PhytophthorainfestansandFusariumgraminearum.Thelethalityratesofcompounds6eand6kagainstMythimnaseparataWalkerwere100%at200mg/Landthelethalityratesofcompounds6hand6kagainstC.pippienspallenswere75%at2mg/L.
简介:Achiralrutheniumcomplex[(1S,2S)-DPEN]-RuCl_2(PPh_3)_2(DPEN=1,2-diphenylethylenediamine,PPh_3=triphenylphosphine)wasencapsulatedinthechannelofAl-MCM-41byelectrostaticadsorptionand1,1-dichlorosilacyclobutanemodification.Thepreparedheterogeneouscatalystshowedthesamecatalyticactivityandenantioselectivityasthecorrespondinghomogeneouscatalystintheasymmetrichydrogenationofacetophenone,andcouldbereusedatleastseventimeswithoutsignificantlossofcatalyticactivityandenantioselectivity.
简介:the Japanese manufacturers chose to focus on making products that Western manufacturersignored. Thus,weather and terrain become less important. The same logic applies to many other situations. For example,日本产品现在已经能和西方最强的对手一较高低
简介:HistoricaldataregardingZhangHeng'sseismoscopeisnotsingularproof.Actually,thefourearliesthistoricaldocuments,i.e.,ContinuationofHistoriographyofHanDynasty,HistoriographyoftheLaterHan,BookoftheLaterHanandDingRecordallhaverelevantrecordsofitsstructure,size,principle,responsetoearthquakeandactualapplications.Thesefiveaspectsaresupportedbyarchaeologicalresearch,unearthedculturalrelics,historicalearthquakesandmodernseismologicalstudy.Thesehistoricalmaterialscontainagreatdealofspecificinformationaboutthisancientseismoscope.Inconclusion,theauthenticityandreliabilityofZhangHeng'sseismoscopeareverified.
简介:the Japanese manufacturers chose to focus on making products that Western manufacturersignored. Thus,weather and terrain become less important. The same logic applies to many other situations. For example,日本产品现在已经能和西方最强的对手一较高低