合成了杂多酸环戊二烯钒衍生物[Bu4N]4[(CpV)PW11O39](1),[Bu4N]4H[(CpV)SiW11O39](2)和[Bu4N]4[A-β-(η5-CpV)SiW9V3O40](3),并通过元素分析、IR、51 V和183 W NMR谱进行了结构表征。结果表明配合物(1)和(2)为结合型有机金属配合物,(3...合成了杂多酸环戊二烯钒衍生物[Bu4N]4[(CpV)PW11O39](1),[Bu4N]4H[(CpV)SiW11O39](2)和[Bu4N]4[A-β-(η5-CpV)SiW9V3O40](3),并通过元素分析、IR、51 V和183 W NMR谱进行了结构表征。结果表明配合物(1)和(2)为结合型有机金属配合物,(3)为支撑型杂多酸有机金属配合物。体外抗肿瘤活性研究表明化合物(1)对HL-60和B16均具有一定的抑制作用。展开更多
The interactions between the new organometallic complexes, ferrocenesubstituted dithioocarborane conjugates （denoted as FcSB1, FcSB2 and FcSBCO） and hemoglobin （Hb） are investigated by electrochemistry, fluorescen...The interactions between the new organometallic complexes, ferrocenesubstituted dithioocarborane conjugates （denoted as FcSB1, FcSB2 and FcSBCO） and hemoglobin （Hb） are investigated by electrochemistry, fluorescence and UVvis absorption spectroscopy. The results demonstrate that FcSB1, FcSB2 and FcSBCO can bind to the heme iron center through the replacement of the weakly bound H20/02 in the distal heme pocket of Hb by their sulfur donor atoms, inducing the allosteric change from the R state （oxygenated conformation, relax） to T state （deoxygenated conformation, tense）. The binding affinity is in the order of FcSBCO〉FeSB2〉FeSB1. Moreover, the fluorescence study illustrates that the three ferrocenecarborane conjugates differently affect the quarterly and tertiary structures as well as the polarity in the surrounding of the Trp and Tyr residues in Hb. Typically, FcSB2 mainly induces alterations of the microenvironment around the 1337Trp residue which is located on the cql32 interface of Hb. Such distinct influences are attributed to the structural features of FcSB1, FcSB2 and FcSBCO containing hydrophobic ferrocenyl and carboranyl units as well as C=O group. Screening the proteinbinding behavior can signify the potential bioactivity of such molecules and may be helpful in the future development of promising multifunctional metallodrugs.展开更多
基金佛山科学技术学院博士启动基金(CGG040947)国家自然科学基金(No.51702051,51702050)+6 种基金广东省自然科学基金–博士启动(No.2018A1660001,2017A030313307)the key Project of Department of Education of Guangdong Province(2016GCZX008)the key Research Platform Project of Department of Education of Guangdong Province(gg041002)the Project of Engineering Research Center of Foshan(20172010018)Foshan Functional Polymer Engineering Center(No.2016GA10162)广东省教育厅特色创新基金(2016KTSCX151,2017KTSCX188)广东省新能源和可再生能源研究开发与应用重点实验室开放基金(Y807s31001)for financial support。
文摘合成了杂多酸环戊二烯钒衍生物[Bu4N]4[(CpV)PW11O39](1),[Bu4N]4H[(CpV)SiW11O39](2)和[Bu4N]4[A-β-(η5-CpV)SiW9V3O40](3),并通过元素分析、IR、51 V和183 W NMR谱进行了结构表征。结果表明配合物(1)和(2)为结合型有机金属配合物,(3)为支撑型杂多酸有机金属配合物。体外抗肿瘤活性研究表明化合物(1)对HL-60和B16均具有一定的抑制作用。
基金supported by the National Natural Science Foundation of China(60778037,50772059,11004123)Foundation of National Excellent Doctoral Dissertation of China(200539)+2 种基金Natural Science Foundation of Shandong Province,China(ZR2009GQ007)China Postdoctoral Science Foundation(20100470040)Youth Scientist Fund of Shandong Province,China(BS2011CL025)~~
基金supported by the National Basic Research Program of China (2010CB732404, 2010CB923303)the National Natural Science Foundation of China (21175020, 90713023, 20925104)+4 种基金the Project of High Technology Research and Development Program of China (2007AA022007)Gongdong Province (2011B090400357)the Natural Science Foundation of Jiangsu Province (BK2008149, BK2010052)C. W. acknowledges the Fundamental Research Funds for the Central Universities (ZYGX2011J099)the support by the Open Research Fund of State Key Laboratory of Bioelectronics, Southeast University (2011E09)
文摘The interactions between the new organometallic complexes, ferrocenesubstituted dithioocarborane conjugates （denoted as FcSB1, FcSB2 and FcSBCO） and hemoglobin （Hb） are investigated by electrochemistry, fluorescence and UVvis absorption spectroscopy. The results demonstrate that FcSB1, FcSB2 and FcSBCO can bind to the heme iron center through the replacement of the weakly bound H20/02 in the distal heme pocket of Hb by their sulfur donor atoms, inducing the allosteric change from the R state （oxygenated conformation, relax） to T state （deoxygenated conformation, tense）. The binding affinity is in the order of FcSBCO〉FeSB2〉FeSB1. Moreover, the fluorescence study illustrates that the three ferrocenecarborane conjugates differently affect the quarterly and tertiary structures as well as the polarity in the surrounding of the Trp and Tyr residues in Hb. Typically, FcSB2 mainly induces alterations of the microenvironment around the 1337Trp residue which is located on the cql32 interface of Hb. Such distinct influences are attributed to the structural features of FcSB1, FcSB2 and FcSBCO containing hydrophobic ferrocenyl and carboranyl units as well as C=O group. Screening the proteinbinding behavior can signify the potential bioactivity of such molecules and may be helpful in the future development of promising multifunctional metallodrugs.
