The crystal structure of the title compound（C19H15F3N2O2,Mr = 360.33） was determined by single-crystal X-ray diffraction.The crystal belongs to triclinic,space group P1,with a = 6.5604（7）,b = 13.9614（16）,c = 18....The crystal structure of the title compound（C19H15F3N2O2,Mr = 360.33） was determined by single-crystal X-ray diffraction.The crystal belongs to triclinic,space group P1,with a = 6.5604（7）,b = 13.9614（16）,c = 18.1790（18） ,α = 102.749（7）,β = 97.542（6）,γ = 94.355（4）°,V = 1600.5（3） 3,Z = 4,Dc = 1.495 g/cm3,λ（MoKα） = 0.71070,F（000） = 744,μ（MoKα） = 0.122 mm-1,R = 0.0434 and wR = 0.1051.A total of 7590 unique reflections were collected,of which 5429 with ｜F｜2 ≥ 2σ｜F｜2 were observed.The two cyclohexene rings in the molecule adopt boat-boat conformations with the deviations of ring atoms C（9） and C10 from the C（5）/C（6）/C（7）/C（8） plane（Ⅰ） by 1.1204（0.0023） and 1.1132（0.0023） ,respectively,whereas from the C（2）/C（3）/C（5）/C（8） plane（Ⅱ） by 1.1627（0.0022） and 1.1818（0.0021） ,respectively.In the cyclopropane and lactam rings,atoms C（11） and N（1） point towards the double bond of C（9）-C（10） and the dihedral angle between the ring plane（Ⅲ） containing C（1）,C（2）,C（3） and C（4） and plane（IV） consisting of C（6）,C（7） and C（11） is 55.76（0.07）°.The dihedral angles between planes Ⅳ and Ⅰ and Ⅱ and Ⅲare 63.58（0.07）° and 58.10（0.06）°,respectively.The dihedral angle between the benzene ring C（13）～ C（18） and plane Ⅳ is 42.41（0.06）°.展开更多
目的:通过观察地黄饮子对PSD大鼠5-羟色胺1A受体(5-HT1AR)与5-羟色胺2A受体(5-HT2 AR)mRNA水平表达的影响,进一步探讨地黄饮子治疗脑卒中后抑郁的可能作用机理。方法:在脑卒中后抑郁大鼠模型上,采用实时荧光定量RT-PCR方法,对PSD大鼠5-H...目的:通过观察地黄饮子对PSD大鼠5-羟色胺1A受体(5-HT1AR)与5-羟色胺2A受体(5-HT2 AR)mRNA水平表达的影响,进一步探讨地黄饮子治疗脑卒中后抑郁的可能作用机理。方法:在脑卒中后抑郁大鼠模型上,采用实时荧光定量RT-PCR方法,对PSD大鼠5-HT1AR与5-HT2 AR mRNA水平进行观察。结果:地黄饮子高、中剂量和百优解均能明显提高PSD大鼠海马5-HT1AR mRNA表达水平、降低5-HT2 AR mRNA表达水平(P<0.05);地黄饮子高、中剂量与百优解无显著差异(P>0.05);地黄饮子低剂量作用不明显。结论:地黄饮子可能是通过上调5-HT1AR mRNA、下调5-HT2 ARmRNA在海马区的表达,达到治疗PSD的目的。展开更多
Lignans derived from Eucommia ulmoides Oliver(Eucommia lignans)inhibit the progression of inflammatory diseases,while their effect on the progression of diabetic nephropathy(DN)remained unclear.This work was designed ...Lignans derived from Eucommia ulmoides Oliver(Eucommia lignans)inhibit the progression of inflammatory diseases,while their effect on the progression of diabetic nephropathy(DN)remained unclear.This work was designed to assess the function of Eucommia lignans in DN.The major constituents of Eucommia lignans were analyzed by UPLC-Q-TOF-MS/MS.The binding between Eucommia lignans and aldose reductase(AR)was predicted by molecular docking.Eucommia lignans(200,100,and 50 mg·kg^(-1))were used in model animals to evaluate their renal function changes.Rat glomerular mesangial cells(HBZY-1)were transfected with sh-AR,sh-AMPK,and oe-AR in the presence of high glucose(HG)or HG combined with Eucommia lignans to evaluate whether Eucommia lignans affected HG-induced cell injury and mitochondrial dysfunction through the AR/Nrf2/HO-1/AMPK axis.Eucommia lignans significantly attenuated the progression of DN in vivo.Eucommia lignans notably reversed HG-induced upregulation of inflammatory cytokines and mitochondrial injury,while downregulating the levels of Cyto c,caspase 9,AR,and NOX4 in HBZY-1 cells.In contrast,HG-induced downregulation of Nrf2,HO-1 and p-AMPKαlevels were abolished by Eucommia lignans.Meanwhile,knockdown of AR exerted similar therapeutic effect of Eucommia lignans on DN progression,and AR overexpression reversed the effect of Eucommia lignans.Eucommia lignans alleviated renal injury through the AR/Nrf2/HO-1/AMPK axis.Thus,these findings might provide evidence for the use of Eucommia lignans in treating DN.展开更多
Based on the weekly closing price of Shenzhen Integrated Index, this article studies the volatility of Shenzhen Stock Market using three different models： Logistic, AR（1） and AR（2）. The time-variable parameters o...Based on the weekly closing price of Shenzhen Integrated Index, this article studies the volatility of Shenzhen Stock Market using three different models： Logistic, AR（1） and AR（2）. The time-variable parameters of Logistic regression model is estimated by using both the index smoothing method and the time-variable parameter estimation method. And both the AR（1） model and the AR（2） model of zero-mean series of the weekly dosing price and its zero-mean series of volatility rate are established based on the analysis results of zero-mean series of the weekly closing price, Six common statistical methods for error prediction are used to test the predicting results. These methods are： mean error （ME）, mean absolute error （MAE）, root mean squared error （RMSE）, mean absolute percentage error （MAPE）, Akaike＇s information criterion （AIC）, and Bayesian information criterion （BIC）. The investigation shows that AR（1） model exhibits the best predicting result, whereas AR（2） model exhibits predicting results that is intermediate between AR（1） model and the Logistic regression model.展开更多
The chemiluminescent spectra from the reaction of Ba+N2O in Ar and N2 were obtained from the HPOR experiment. The rotational perturbation of A1∑, V′=1 was observed. The vibrational relaxation rate of BaO* A1∑ V′=1...The chemiluminescent spectra from the reaction of Ba+N2O in Ar and N2 were obtained from the HPOR experiment. The rotational perturbation of A1∑, V′=1 was observed. The vibrational relaxation rate of BaO* A1∑ V′=1 and the electronic quenching rate of BaO* A1∑, V′=0 in Ar have been obtained as 2.8×10-11cm3·展开更多
文摘The crystal structure of the title compound（C19H15F3N2O2,Mr = 360.33） was determined by single-crystal X-ray diffraction.The crystal belongs to triclinic,space group P1,with a = 6.5604（7）,b = 13.9614（16）,c = 18.1790（18） ,α = 102.749（7）,β = 97.542（6）,γ = 94.355（4）°,V = 1600.5（3） 3,Z = 4,Dc = 1.495 g/cm3,λ（MoKα） = 0.71070,F（000） = 744,μ（MoKα） = 0.122 mm-1,R = 0.0434 and wR = 0.1051.A total of 7590 unique reflections were collected,of which 5429 with ｜F｜2 ≥ 2σ｜F｜2 were observed.The two cyclohexene rings in the molecule adopt boat-boat conformations with the deviations of ring atoms C（9） and C10 from the C（5）/C（6）/C（7）/C（8） plane（Ⅰ） by 1.1204（0.0023） and 1.1132（0.0023） ,respectively,whereas from the C（2）/C（3）/C（5）/C（8） plane（Ⅱ） by 1.1627（0.0022） and 1.1818（0.0021） ,respectively.In the cyclopropane and lactam rings,atoms C（11） and N（1） point towards the double bond of C（9）-C（10） and the dihedral angle between the ring plane（Ⅲ） containing C（1）,C（2）,C（3） and C（4） and plane（IV） consisting of C（6）,C（7） and C（11） is 55.76（0.07）°.The dihedral angles between planes Ⅳ and Ⅰ and Ⅱ and Ⅲare 63.58（0.07）° and 58.10（0.06）°,respectively.The dihedral angle between the benzene ring C（13）～ C（18） and plane Ⅳ is 42.41（0.06）°.
文摘目的:通过观察地黄饮子对PSD大鼠5-羟色胺1A受体(5-HT1AR)与5-羟色胺2A受体(5-HT2 AR)mRNA水平表达的影响,进一步探讨地黄饮子治疗脑卒中后抑郁的可能作用机理。方法:在脑卒中后抑郁大鼠模型上,采用实时荧光定量RT-PCR方法,对PSD大鼠5-HT1AR与5-HT2 AR mRNA水平进行观察。结果:地黄饮子高、中剂量和百优解均能明显提高PSD大鼠海马5-HT1AR mRNA表达水平、降低5-HT2 AR mRNA表达水平(P<0.05);地黄饮子高、中剂量与百优解无显著差异(P>0.05);地黄饮子低剂量作用不明显。结论:地黄饮子可能是通过上调5-HT1AR mRNA、下调5-HT2 ARmRNA在海马区的表达,达到治疗PSD的目的。
基金supported by the National Development of Key Novel Drugs for Special Projects of China(No.2017ZX09304014)the National Natural Science Foundation of China(No.82003929)+1 种基金Hunan Provincial Natural Science Foundation of China(No.2021JJ40993)Hunan Key Laboratory for Bioanalysis of Complex Matrix Samples(No.2017TP1037).
文摘Lignans derived from Eucommia ulmoides Oliver(Eucommia lignans)inhibit the progression of inflammatory diseases,while their effect on the progression of diabetic nephropathy(DN)remained unclear.This work was designed to assess the function of Eucommia lignans in DN.The major constituents of Eucommia lignans were analyzed by UPLC-Q-TOF-MS/MS.The binding between Eucommia lignans and aldose reductase(AR)was predicted by molecular docking.Eucommia lignans(200,100,and 50 mg·kg^(-1))were used in model animals to evaluate their renal function changes.Rat glomerular mesangial cells(HBZY-1)were transfected with sh-AR,sh-AMPK,and oe-AR in the presence of high glucose(HG)or HG combined with Eucommia lignans to evaluate whether Eucommia lignans affected HG-induced cell injury and mitochondrial dysfunction through the AR/Nrf2/HO-1/AMPK axis.Eucommia lignans significantly attenuated the progression of DN in vivo.Eucommia lignans notably reversed HG-induced upregulation of inflammatory cytokines and mitochondrial injury,while downregulating the levels of Cyto c,caspase 9,AR,and NOX4 in HBZY-1 cells.In contrast,HG-induced downregulation of Nrf2,HO-1 and p-AMPKαlevels were abolished by Eucommia lignans.Meanwhile,knockdown of AR exerted similar therapeutic effect of Eucommia lignans on DN progression,and AR overexpression reversed the effect of Eucommia lignans.Eucommia lignans alleviated renal injury through the AR/Nrf2/HO-1/AMPK axis.Thus,these findings might provide evidence for the use of Eucommia lignans in treating DN.
基金The research is supported by the National Natural Science Foundation of China (60574069)the Soft Science Foundation of Guangdong Province (2005B70101044)
文摘Based on the weekly closing price of Shenzhen Integrated Index, this article studies the volatility of Shenzhen Stock Market using three different models： Logistic, AR（1） and AR（2）. The time-variable parameters of Logistic regression model is estimated by using both the index smoothing method and the time-variable parameter estimation method. And both the AR（1） model and the AR（2） model of zero-mean series of the weekly dosing price and its zero-mean series of volatility rate are established based on the analysis results of zero-mean series of the weekly closing price, Six common statistical methods for error prediction are used to test the predicting results. These methods are： mean error （ME）, mean absolute error （MAE）, root mean squared error （RMSE）, mean absolute percentage error （MAPE）, Akaike＇s information criterion （AIC）, and Bayesian information criterion （BIC）. The investigation shows that AR（1） model exhibits the best predicting result, whereas AR（2） model exhibits predicting results that is intermediate between AR（1） model and the Logistic regression model.
文摘The chemiluminescent spectra from the reaction of Ba+N2O in Ar and N2 were obtained from the HPOR experiment. The rotational perturbation of A1∑, V′=1 was observed. The vibrational relaxation rate of BaO* A1∑ V′=1 and the electronic quenching rate of BaO* A1∑, V′=0 in Ar have been obtained as 2.8×10-11cm3·
