Objective:To explore the half-effective dose(ED_(50))of remazolam toluenesulfonate combined with subthreshold amounts of esketamine for inhibiting cardiovascular response to tracheal intubation in elderly patients.Met...Objective:To explore the half-effective dose(ED_(50))of remazolam toluenesulfonate combined with subthreshold amounts of esketamine for inhibiting cardiovascular response to tracheal intubation in elderly patients.Method:We included 42 patients,aged 65-75,who required general anesthesia and single-lumen endotracheal intubation for elective surgery.The first patient was administered remazolam toluenesulfonate at a dose of 0.20 mg/kg.Once the patient lost consciousness,their alertness/sedation score(OAA/S score)was≤1,and their BIS score was≤60,and a subthreshold dose(0.3 mg/kg)of esketamine was given.The subsequent doses were adjusted using a sequential approach based on the cardiovascular response to tracheal intubation observed in the previous patient.The dose was modified in increments or decrements of 0.01 mg/kg.The ED_(50)and 95%CI of remazolam toluenesulfonate were calculated using the Dixon and Massey sequential distribution test method.Result:The inhibition of endotracheal intubation response was positively correlated with the dose of remazolam toluenesulfonate,and the depth of sedation could not be achieved when the amount was≤0.22 mg/kg.The ED_(50)of remazolam toluenesulfonate combined with a subthreshold dose of esketamine in inhibiting cardiovascular response to tracheal intubation in elderly patients was 0.30(0.28,0.33)mg/kg.There was no statistically significant difference in blood pressure between the induction of anesthesia and before the operation.Conclusion:When compounded with 0.3 mg/kg esketamine,the ED_(50)of Remazolam toluenesulfonate in inhibiting cardiovascular response to endotracheal intubation in elderly patients was 0.30 mg/kg(95%CI0.28-0.33 mg/kg).展开更多
1,1,1,-Trifluoro-2- substituted- phenyl- 2- propanols- 3- 14C were prepared from addition of methyl- 14C magnesium iodide to appropriate trifluoroacetophenone. These alcohols were converted into tosylatcs by reaction ...1,1,1,-Trifluoro-2- substituted- phenyl- 2- propanols- 3- 14C were prepared from addition of methyl- 14C magnesium iodide to appropriate trifluoroacetophenone. These alcohols were converted into tosylatcs by reaction with n-butyllithium and then with p-toluenesulfonyl chloride. The yield, boiling point or melting point and pertinent spectral data of these compounds are reported.展开更多
A novel supramolecular mixed ligand complex of formula [Cu（PTS）2（Him）2（H2O）2] （C20H26CuN4O8S2,PTS=p-toluenesulfonate,Him=imidazole） has been synthesized in aqueous solution and characterized by elemental analy...A novel supramolecular mixed ligand complex of formula [Cu（PTS）2（Him）2（H2O）2] （C20H26CuN4O8S2,PTS=p-toluenesulfonate,Him=imidazole） has been synthesized in aqueous solution and characterized by elemental analysis,IR and single-crystal X-ray diffraction.The compound crystallizes in the monoclinic system,space group P21/n,Z=2,a=5.650（2）,b=14.671（3）,c=14.638（3）,β=100.10（3）°,V=1194.60（4）3,Dc=1.607 g/cm3,μ（MoKα）=1.143 mm-1,F（000）=598,R=0.0615 and wR=0.1503 for 1752 observed reflections with I 〉 2σ（I）.The copper（II） ion in the complex adopts a slightly distorted octahedral coordination geometry and is six-coordinated with N2O4 donor set consisting of two nitrogen atoms and four oxygen atoms provided by the ligands of two imidazole molecules,two water molecules and two p-toluenesulfonate ions.The sulfonate group of the PTS ligand remains weak-coordinated and forms a number of hydrogen bonds with water molecules and imidazole ligands.X-ray structural analysis reveals that the coordination molecules are connected to form a 3-D supramolecular framework by electrostatic interaction,weak van der Waals forces,hydrogen bonding and π-π interaction.The thermal behaviour of the title complex was investigated by using DSC and TG-DTG techniques.展开更多
目的:探讨甲苯磺酸瑞马唑仑联合依托咪酯在颅脑手术中应用价值。方法:依据配对原则回顾性选取2021年11月至2023年11月在我院接受颅脑手术治疗的患者112例,按麻醉方案不同分为对照组(n=56)、观察组(n=56)。其中采用依托咪酯麻醉的纳入对...目的:探讨甲苯磺酸瑞马唑仑联合依托咪酯在颅脑手术中应用价值。方法:依据配对原则回顾性选取2021年11月至2023年11月在我院接受颅脑手术治疗的患者112例,按麻醉方案不同分为对照组(n=56)、观察组(n=56)。其中采用依托咪酯麻醉的纳入对照组,采用甲苯磺酸瑞马唑仑联合依托咪酯麻醉的纳入观察组。比较两组不同时间点[术前(T_(0))、诱导后5 min(T_(1))、插管即刻时(T_(2))、术毕时(T_(3))]平均动脉压、心率水平,麻醉相关指标[意识消失时间、自主呼吸恢复时间、麻醉苏醒时间]。以T_(0)、术后1 d为时间节点,比较两组神经功能指标[神经元特异性烯醇化酶(Neuron-specific-enolase,NSE)、中枢神经特异蛋白(Central nervous system specific protein,S100β)、胶质纤维酸性蛋白(Glial fibrillary acidic protein,GFAP)]、血清炎症因子指标[超敏C反应蛋白(Hypersensitive C-reactive protein,hs-CRP)、白细胞介素-1β(Interleukin-1β,IL-1β)]水平及不良反应总发生率。结果:观察组T_(1)~T_(3)时心率、平均动脉压水平波动幅度小于对照组(P<0.05);观察组意识消失时间、自主呼吸恢复时间、麻醉苏醒时间短于对照组(P<0.05);观察组术后1 d S100β、GFAP、NSE水平、hs-CRP、IL-1β水平低于对照组(P<0.05);观察组不良反应总发生率(8.93%)与对照组(7.14%)比较,差异无统计学意义(P>0.05)。结论:甲苯磺酸瑞马唑仑、依托咪酯复合麻醉能有效维持颅脑手术患者循环稳定,减轻炎症反应,减少神经功能损伤,且易唤醒,麻醉安全性有保障。展开更多
Lipophilic antioxidants are used in edible oils and oleaginous foods. Therefore, development of novel lipophilic antioxidant is very important. p-toluenesulfonic acid(PTSA) catalyzed esterification of dihydrocaffeic a...Lipophilic antioxidants are used in edible oils and oleaginous foods. Therefore, development of novel lipophilic antioxidant is very important. p-toluenesulfonic acid(PTSA) catalyzed esterification of dihydrocaffeic acid(DHCA) with hexanol was selected as model reaction to investigate the synthesis of lipophilic antioxidant. The highest yield of hexyl dihydrocaffeate was achieved under the following optimum conditions: 1 mol% PTSA, 1:30 molar ratio of dihydrocaffeic acid to hexanol without molecular sieves at 80 ℃ in 2 h. The relationship between temperature and the forward rate constant gave the activation energy of 22.6 k J/mol, which indicated that PTSA possessed high catalytic activity in the synthesis of hexyl dihydrocaffeate. In addition, the activity of PTSA was not inhibited by the water produced during esterification process. Importantly, this esterification could even proceed smoothly when initial water content was below 5%. In addition, the esterification of a set of phenolic acids could take place efficiently under the same conditions affording the corresponding esters in good to excellent yields. This established method will provide an efficient method for produce lipophilic antioxidants from various natural phenolic acids.展开更多
文摘Objective:To explore the half-effective dose(ED_(50))of remazolam toluenesulfonate combined with subthreshold amounts of esketamine for inhibiting cardiovascular response to tracheal intubation in elderly patients.Method:We included 42 patients,aged 65-75,who required general anesthesia and single-lumen endotracheal intubation for elective surgery.The first patient was administered remazolam toluenesulfonate at a dose of 0.20 mg/kg.Once the patient lost consciousness,their alertness/sedation score(OAA/S score)was≤1,and their BIS score was≤60,and a subthreshold dose(0.3 mg/kg)of esketamine was given.The subsequent doses were adjusted using a sequential approach based on the cardiovascular response to tracheal intubation observed in the previous patient.The dose was modified in increments or decrements of 0.01 mg/kg.The ED_(50)and 95%CI of remazolam toluenesulfonate were calculated using the Dixon and Massey sequential distribution test method.Result:The inhibition of endotracheal intubation response was positively correlated with the dose of remazolam toluenesulfonate,and the depth of sedation could not be achieved when the amount was≤0.22 mg/kg.The ED_(50)of remazolam toluenesulfonate combined with a subthreshold dose of esketamine in inhibiting cardiovascular response to tracheal intubation in elderly patients was 0.30(0.28,0.33)mg/kg.There was no statistically significant difference in blood pressure between the induction of anesthesia and before the operation.Conclusion:When compounded with 0.3 mg/kg esketamine,the ED_(50)of Remazolam toluenesulfonate in inhibiting cardiovascular response to endotracheal intubation in elderly patients was 0.30 mg/kg(95%CI0.28-0.33 mg/kg).
基金The Project Supported by the National Science Foundation of U.S.A.
文摘1,1,1,-Trifluoro-2- substituted- phenyl- 2- propanols- 3- 14C were prepared from addition of methyl- 14C magnesium iodide to appropriate trifluoroacetophenone. These alcohols were converted into tosylatcs by reaction with n-butyllithium and then with p-toluenesulfonyl chloride. The yield, boiling point or melting point and pertinent spectral data of these compounds are reported.
基金Supported by the Foundation of Key Laboratory for Green Chemical Process of Ministry of Education,Wuhan Institute of Technology (No. RGCT200904)
文摘A novel supramolecular mixed ligand complex of formula [Cu（PTS）2（Him）2（H2O）2] （C20H26CuN4O8S2,PTS=p-toluenesulfonate,Him=imidazole） has been synthesized in aqueous solution and characterized by elemental analysis,IR and single-crystal X-ray diffraction.The compound crystallizes in the monoclinic system,space group P21/n,Z=2,a=5.650（2）,b=14.671（3）,c=14.638（3）,β=100.10（3）°,V=1194.60（4）3,Dc=1.607 g/cm3,μ（MoKα）=1.143 mm-1,F（000）=598,R=0.0615 and wR=0.1503 for 1752 observed reflections with I 〉 2σ（I）.The copper（II） ion in the complex adopts a slightly distorted octahedral coordination geometry and is six-coordinated with N2O4 donor set consisting of two nitrogen atoms and four oxygen atoms provided by the ligands of two imidazole molecules,two water molecules and two p-toluenesulfonate ions.The sulfonate group of the PTS ligand remains weak-coordinated and forms a number of hydrogen bonds with water molecules and imidazole ligands.X-ray structural analysis reveals that the coordination molecules are connected to form a 3-D supramolecular framework by electrostatic interaction,weak van der Waals forces,hydrogen bonding and π-π interaction.The thermal behaviour of the title complex was investigated by using DSC and TG-DTG techniques.
文摘目的:探讨甲苯磺酸瑞马唑仑联合依托咪酯在颅脑手术中应用价值。方法:依据配对原则回顾性选取2021年11月至2023年11月在我院接受颅脑手术治疗的患者112例,按麻醉方案不同分为对照组(n=56)、观察组(n=56)。其中采用依托咪酯麻醉的纳入对照组,采用甲苯磺酸瑞马唑仑联合依托咪酯麻醉的纳入观察组。比较两组不同时间点[术前(T_(0))、诱导后5 min(T_(1))、插管即刻时(T_(2))、术毕时(T_(3))]平均动脉压、心率水平,麻醉相关指标[意识消失时间、自主呼吸恢复时间、麻醉苏醒时间]。以T_(0)、术后1 d为时间节点,比较两组神经功能指标[神经元特异性烯醇化酶(Neuron-specific-enolase,NSE)、中枢神经特异蛋白(Central nervous system specific protein,S100β)、胶质纤维酸性蛋白(Glial fibrillary acidic protein,GFAP)]、血清炎症因子指标[超敏C反应蛋白(Hypersensitive C-reactive protein,hs-CRP)、白细胞介素-1β(Interleukin-1β,IL-1β)]水平及不良反应总发生率。结果:观察组T_(1)~T_(3)时心率、平均动脉压水平波动幅度小于对照组(P<0.05);观察组意识消失时间、自主呼吸恢复时间、麻醉苏醒时间短于对照组(P<0.05);观察组术后1 d S100β、GFAP、NSE水平、hs-CRP、IL-1β水平低于对照组(P<0.05);观察组不良反应总发生率(8.93%)与对照组(7.14%)比较,差异无统计学意义(P>0.05)。结论:甲苯磺酸瑞马唑仑、依托咪酯复合麻醉能有效维持颅脑手术患者循环稳定,减轻炎症反应,减少神经功能损伤,且易唤醒,麻醉安全性有保障。
基金Supported by Scientific and Technological Project of Henan Province(No.182102110024)Basic Research Funds of Henan University of Technology(No.2015RCJH01)
文摘Lipophilic antioxidants are used in edible oils and oleaginous foods. Therefore, development of novel lipophilic antioxidant is very important. p-toluenesulfonic acid(PTSA) catalyzed esterification of dihydrocaffeic acid(DHCA) with hexanol was selected as model reaction to investigate the synthesis of lipophilic antioxidant. The highest yield of hexyl dihydrocaffeate was achieved under the following optimum conditions: 1 mol% PTSA, 1:30 molar ratio of dihydrocaffeic acid to hexanol without molecular sieves at 80 ℃ in 2 h. The relationship between temperature and the forward rate constant gave the activation energy of 22.6 k J/mol, which indicated that PTSA possessed high catalytic activity in the synthesis of hexyl dihydrocaffeate. In addition, the activity of PTSA was not inhibited by the water produced during esterification process. Importantly, this esterification could even proceed smoothly when initial water content was below 5%. In addition, the esterification of a set of phenolic acids could take place efficiently under the same conditions affording the corresponding esters in good to excellent yields. This established method will provide an efficient method for produce lipophilic antioxidants from various natural phenolic acids.
