水热法合成了一个无机-有机杂化的NH_(4)[Cu_(3)^(I)(C_(10)H_(8)N_(2))_(3)Mo_(8)O_(26)]化合物,通过元素分析和单晶X-射线衍射进行了表征。化合物为三斜晶系,P1空间群,晶胞参数a=1.08763(9)nm,b=1.12674(10)nm,c=1.13067(10)nm,α=68....水热法合成了一个无机-有机杂化的NH_(4)[Cu_(3)^(I)(C_(10)H_(8)N_(2))_(3)Mo_(8)O_(26)]化合物,通过元素分析和单晶X-射线衍射进行了表征。化合物为三斜晶系,P1空间群,晶胞参数a=1.08763(9)nm,b=1.12674(10)nm,c=1.13067(10)nm,α=68.4820(10)°,β=83.523(2)°,γ=64.4180(10)°,V=1.16095(2)nm^(3),Z=1,Dc=2.661 g/cm^(3),Mr=1860.73,μ(MoKα)=35.22 cm^(-1),F(000)=888,R=0.0478,wR=0.099。化合物的结构包含2个结晶学上独立的铜原子、不连续的多氧阴离子β-[Mo_(8)O_(2)6]4-和无限扩展的[Cu I(C_(10)H_(8)N_(2))]链。每一个铜原子为类似的{CuN_(2)}配位模式,被4,4’-联吡啶连接成一维沿a轴方向的[Cu(C 10 H 8 N 2)]+链。分子结构中存在氢键和π…π作用。对化合物的热稳定性、荧光性质也进行了研究。展开更多
The reaction mechanism of o-aminophenol, acetic acid and phosphorus oxytrichloride in one-pot to form 2-methyl benzoxazole was studied by density functional theory. The geometries of the reactants, transition states, ...The reaction mechanism of o-aminophenol, acetic acid and phosphorus oxytrichloride in one-pot to form 2-methyl benzoxazole was studied by density functional theory. The geometries of the reactants, transition states, intermediates and products were optimized at the GGA/PW91/DNP level. Vibration analysis was carried out to confirm the transition state structure. Two possible reaction pathways were investigated in this study. The result indicates that the reaction Re→TS1→IM1→TSA2→IMA2→TSA3→IMA3→TSA4→IMA4→TSA5→P2 is the main pathway, the activation energy of which is the lowest. Re→TS1→IM1 is the rate-limiting step, with the activation energy being 221.54 kJ·mol^(-1) and the reaction heat being 10.06 kJ·mol^(-1). The dominant product predicted theoretically is in agreement with the experiment results.展开更多
The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol (2-TMAP) has been accomplished by using air O_2,H_2O_2 and NaOCl oxidants in an aqueous alkaline medium between...The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol (2-TMAP) has been accomplished by using air O_2,H_2O_2 and NaOCl oxidants in an aqueous alkaline medium between 20℃and 90℃.The structures of the monomer and oligomer were confirmed by FT-IR,UV-Vis,~1H-NMR and ^(13)C-NMR and elemental analysis.TGA-DTA,size exclusion chromatography(SEC) techniques and solubility tests were applied for characterization.The ~1H-NMR and ^(13)C-NMR data show that the polymeriz...展开更多
The practical use of non-conducting poly(o-aminophenol) (POAP) films in the field of the bioelectrochemistry is discussed in this paper. Particular emphasis is given to the effects of applied potential, solution pH an...The practical use of non-conducting poly(o-aminophenol) (POAP) films in the field of the bioelectrochemistry is discussed in this paper. Particular emphasis is given to the effects of applied potential, solution pH and interferents on the response current of biosensors based on POAP.展开更多
目的探究布托啡诺(BUT)调节叉头框蛋白O3(FOXO3)-叉头框蛋白M1(FOXM1)信号轴对骨肉瘤细胞生物活性和化疗药物耐药性的影响。方法将2.0μmol/L顺铂(CDDP)处理的CDDP耐药MG-63细胞(MG-63/CDDP)分为对照组(MG-63/CDDP细胞用含0.05g/dl DMS...目的探究布托啡诺(BUT)调节叉头框蛋白O3(FOXO3)-叉头框蛋白M1(FOXM1)信号轴对骨肉瘤细胞生物活性和化疗药物耐药性的影响。方法将2.0μmol/L顺铂(CDDP)处理的CDDP耐药MG-63细胞(MG-63/CDDP)分为对照组(MG-63/CDDP细胞用含0.05g/dl DMSO培养液处理)、BUT组(40μg/ml BUT处理MG-63/CDDP细胞)、JY-2组(用100μmol/L FOXO3-FOXM1抑制剂JY-2处理MG-63/CDDP细胞)和BUT+JY-2组(用40μg/ml BUT以及100μmol/L JY-2处理MG-63/CDDP细胞)。CCK8法检测MG-63/CDDP细胞活性;流式细胞术检测MG-63/CDDP细胞凋亡情况;Transwell法检测MG-63/CDDP细胞迁移、侵袭情况;Western blot检测自噬蛋白以及FOXO3-FOXM1信号通路相关蛋白表达。结果与MG-63细胞相比,MG-63/CDDP细胞IC50增加(20.56±2.52μmol/L vs 0.97±0.10μmol/L),差异具有统计学意义(q=19.017,P<0.05),筛选出较适浓度1μmol/L CDDP用于后续实验。与对照组相比,BUT组MG-63/CDDP细胞A值(0.43±0.05 vs 0.68±0.06),细胞迁移数量(63.63±7.58个vs114.56±10.57个)以及侵袭数量(43.38±4.58个vs 79.56±8.48个)、自噬相关蛋白Beclin1(0.31±0.05 vs 0.62±0.07)和微管相关蛋白轻链3(LC3)-II/I蛋白(0.51±0.08 vs 0.98±0.11)水平均下降(q=6.763~9.591,均P<0.05),凋亡率(28.57%±3.14%vs 8.67%±1.46%),FOXO3(0.72±0.08 vs 0.33±0.04),FOXM1(1.22±0.15 vs 0.70±0.08)蛋白水平均上升(q=14.077,10.681,7.493,均P<0.05),而JY-2组MG-63/CDDP细胞A值(0.99±0.13 vs0.68±0.06),细胞迁移数量(147.59±15.37个vs 114.56±10.57个)以及侵袭数量(111.83±12.58个vs 79.56±8.48个),Beclin1(0.94±0.11 vs 0.62±0.07),LC3-II/I蛋白(1.27±0.13 vs 0.98±0.11)水平均升高(q=4.171~6.012,均P<0.05),凋亡率(4.56%±0.86%vs 8.67%±1.46%),FOXO3(0.17±0.01 vs 0.33±0.04),FOXM1(0.46±0.03 vs 0.70±0.08)蛋白水平降低(q=5.941,9.505,6.881,均P<0.05),差异具有统计学意义。JY-2逆转了BUT对MG-63/CDDP细胞活性和化疗耐药性的有利影响。结论BUT可能通过激活FOXO3-FOXM1信号通路调节骨肉瘤细胞的细胞活性和CDDP耐药性。展开更多
文摘水热法合成了一个无机-有机杂化的NH_(4)[Cu_(3)^(I)(C_(10)H_(8)N_(2))_(3)Mo_(8)O_(26)]化合物,通过元素分析和单晶X-射线衍射进行了表征。化合物为三斜晶系,P1空间群,晶胞参数a=1.08763(9)nm,b=1.12674(10)nm,c=1.13067(10)nm,α=68.4820(10)°,β=83.523(2)°,γ=64.4180(10)°,V=1.16095(2)nm^(3),Z=1,Dc=2.661 g/cm^(3),Mr=1860.73,μ(MoKα)=35.22 cm^(-1),F(000)=888,R=0.0478,wR=0.099。化合物的结构包含2个结晶学上独立的铜原子、不连续的多氧阴离子β-[Mo_(8)O_(2)6]4-和无限扩展的[Cu I(C_(10)H_(8)N_(2))]链。每一个铜原子为类似的{CuN_(2)}配位模式,被4,4’-联吡啶连接成一维沿a轴方向的[Cu(C 10 H 8 N 2)]+链。分子结构中存在氢键和π…π作用。对化合物的热稳定性、荧光性质也进行了研究。
基金Supported by the Scientific and Technological Research Program of Chongqing Municipal Education Commission(KJ1601215)the Ministry of Education "Chunhui Plan"(Z2016177)
文摘The reaction mechanism of o-aminophenol, acetic acid and phosphorus oxytrichloride in one-pot to form 2-methyl benzoxazole was studied by density functional theory. The geometries of the reactants, transition states, intermediates and products were optimized at the GGA/PW91/DNP level. Vibration analysis was carried out to confirm the transition state structure. Two possible reaction pathways were investigated in this study. The result indicates that the reaction Re→TS1→IM1→TSA2→IMA2→TSA3→IMA3→TSA4→IMA4→TSA5→P2 is the main pathway, the activation energy of which is the lowest. Re→TS1→IM1 is the rate-limiting step, with the activation energy being 221.54 kJ·mol^(-1) and the reaction heat being 10.06 kJ·mol^(-1). The dominant product predicted theoretically is in agreement with the experiment results.
基金supported by the Government Planning Organization(GPO2002K120170-7)TUBITAK GrantsCommission for a research grant(No.TBAG-105T428).
文摘The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol (2-TMAP) has been accomplished by using air O_2,H_2O_2 and NaOCl oxidants in an aqueous alkaline medium between 20℃and 90℃.The structures of the monomer and oligomer were confirmed by FT-IR,UV-Vis,~1H-NMR and ^(13)C-NMR and elemental analysis.TGA-DTA,size exclusion chromatography(SEC) techniques and solubility tests were applied for characterization.The ~1H-NMR and ^(13)C-NMR data show that the polymeriz...
文摘The practical use of non-conducting poly(o-aminophenol) (POAP) films in the field of the bioelectrochemistry is discussed in this paper. Particular emphasis is given to the effects of applied potential, solution pH and interferents on the response current of biosensors based on POAP.
文摘目的探究布托啡诺(BUT)调节叉头框蛋白O3(FOXO3)-叉头框蛋白M1(FOXM1)信号轴对骨肉瘤细胞生物活性和化疗药物耐药性的影响。方法将2.0μmol/L顺铂(CDDP)处理的CDDP耐药MG-63细胞(MG-63/CDDP)分为对照组(MG-63/CDDP细胞用含0.05g/dl DMSO培养液处理)、BUT组(40μg/ml BUT处理MG-63/CDDP细胞)、JY-2组(用100μmol/L FOXO3-FOXM1抑制剂JY-2处理MG-63/CDDP细胞)和BUT+JY-2组(用40μg/ml BUT以及100μmol/L JY-2处理MG-63/CDDP细胞)。CCK8法检测MG-63/CDDP细胞活性;流式细胞术检测MG-63/CDDP细胞凋亡情况;Transwell法检测MG-63/CDDP细胞迁移、侵袭情况;Western blot检测自噬蛋白以及FOXO3-FOXM1信号通路相关蛋白表达。结果与MG-63细胞相比,MG-63/CDDP细胞IC50增加(20.56±2.52μmol/L vs 0.97±0.10μmol/L),差异具有统计学意义(q=19.017,P<0.05),筛选出较适浓度1μmol/L CDDP用于后续实验。与对照组相比,BUT组MG-63/CDDP细胞A值(0.43±0.05 vs 0.68±0.06),细胞迁移数量(63.63±7.58个vs114.56±10.57个)以及侵袭数量(43.38±4.58个vs 79.56±8.48个)、自噬相关蛋白Beclin1(0.31±0.05 vs 0.62±0.07)和微管相关蛋白轻链3(LC3)-II/I蛋白(0.51±0.08 vs 0.98±0.11)水平均下降(q=6.763~9.591,均P<0.05),凋亡率(28.57%±3.14%vs 8.67%±1.46%),FOXO3(0.72±0.08 vs 0.33±0.04),FOXM1(1.22±0.15 vs 0.70±0.08)蛋白水平均上升(q=14.077,10.681,7.493,均P<0.05),而JY-2组MG-63/CDDP细胞A值(0.99±0.13 vs0.68±0.06),细胞迁移数量(147.59±15.37个vs 114.56±10.57个)以及侵袭数量(111.83±12.58个vs 79.56±8.48个),Beclin1(0.94±0.11 vs 0.62±0.07),LC3-II/I蛋白(1.27±0.13 vs 0.98±0.11)水平均升高(q=4.171~6.012,均P<0.05),凋亡率(4.56%±0.86%vs 8.67%±1.46%),FOXO3(0.17±0.01 vs 0.33±0.04),FOXM1(0.46±0.03 vs 0.70±0.08)蛋白水平降低(q=5.941,9.505,6.881,均P<0.05),差异具有统计学意义。JY-2逆转了BUT对MG-63/CDDP细胞活性和化疗耐药性的有利影响。结论BUT可能通过激活FOXO3-FOXM1信号通路调节骨肉瘤细胞的细胞活性和CDDP耐药性。
