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报道了甲酸/三乙胺体系中,(S,S) -TsDPEN-Ru络合物催化的不对称氧转移反应合成(S)-γ-胺基醇的方法.考察了不同底物的反应性能,β-单/二烷基胺基-2-噻吩酮在该还原体系中氧解得到1-(2-噻吩基)-1-丙酮;氮原子上吸电子基取代的底物以高收率、高立体选择性(>95%e.e.)得到还原产物.将这一反应用于... 相似文献
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A simple reversed-phase high-performance liquid chromatographic method employing C-18 column has been developed for simultaneous analysis of three intermediates in the synthesis of S-duloxetine, the antidepressant drug, viz., 2-acetyl thiophene (AT), N,N-dimethyl-3-keto-(2-thienyl)-propanamine (DKTP) and (S)-N,N-dimethyl-3-hydroxy-(2-thienyl)-propanamine (DHTP). Good separations were achieved by employing an isocratic system using acetonitrile and 0.05 M phosphate buffer (pH 7.0) containing 0.02% diethylamine. The detection was carried out at 241 nm. The method was validated for linearity, range, accuracy and precision. The developed method was applied for monitoring the progress of chemical synthesis of DKTP from AT followed by the biocatalytic reduction of DKTP to DHTP as the disappearance of the substrate and formation of the product can be monitored simultaneously by the present method. 相似文献
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Shan Zhen He Xue Ming Li Jia Dai Ming Yan 《中国化学快报》2008,19(1):23-25
Antidepressant duloxetine (1) was prepared via asymmetric transfer hydrogenation of 3-(dimethylamino)-1-(thiophen-2- yl)propan-1-one (3). The Ru(Ⅱ), Rh(Ⅲ) and Ir(Ⅲ) complexes of several chiral ligands were examined as the catalyst and (S,S)-N-tosyl-1,2-diphenyl ethylenediamine (TsDPEN)-Ru(Ⅱ) complex was found to provide good yield and excellent enantioselectivity. 2007 Ming Yan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 相似文献
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目的比较度洛西汀与文拉法辛治疗老年首发抑郁症伴疼痛的临床疗效和不良反应。方法将80例符合ICD-10中度抑郁发作诊断标准并伴躯体疼痛的老年首发抑郁症患者按随机数字表法分为度洛西汀组和文拉法辛组,分别给予度洛西汀与文拉法辛治疗,疗程8周。采用17项汉密尔顿抑郁量表(HAMD)、视觉模拟评分量表(VAS)评定疗效,采用不良反应量表(TESS)及实验室检查评定不良反应。结果度洛西汀组总有效率为72.5%,文拉法辛组总有效率为73.7%,差异无统计学意义(P>0.05)。度洛西汀组治疗第1周末HAMD、VAS分值低于文拉法辛组,差异有统计学意义(P<0.05)。两组患者不良反应发生率的差异无统计学意义(P>0.05),但度洛西汀组心血管不良事件发生率低于文拉法辛组(P<0.05)。结论度洛西汀和文拉法辛缓释剂治疗老年首发抑郁症伴疼痛的患者均有效,度洛西汀组心血管相关不良事件发生率较少,对老年患者安全有效,耐受性好。 相似文献
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Mauro Panunzio Emiliano Tamanini Elisa Bandini Eileen Campana Antonio D''Aurizio Paola Vicennati 《Tetrahedron》2006,62(52):12270-12280
The synthesis of 5-phenylthio-1,3-oxazinan-4-ones, through a hetero Diels–Alder strategy, is described. The cycloadducts thus prepared have been shown to be useful intermediates for the synthesis of 1,3-aminoalcohols, valuable intermediates in the preparation of biologically significant molecules, e.g., optically active Duloxetines and Fluoxetines. In the course of this elaboration a novel microwave assisted desulfurization reaction is reported. 相似文献
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目的 比较度洛西汀与帕罗西汀治疗首发抑郁症性功能的影响。方法 将72 例首发抑郁症患者随机分为度洛西汀组(36 例)和帕罗西汀组(36 例),观察8周。应用亚利桑那性经验量表(ASEX)评定性功能情况,同时用汉密顿抑郁量表(17 项)(HAMD17)观察疗效和副反应量表(TESS)评定不良反应。结果 治疗第2、4、8 周ASEX 评分度洛西汀组得分显著低于帕罗西汀组,自第2周末始,两组与基线时比较ASEX 得分均有显著下降。疗效观察发现,治疗8周末度洛西汀组有效率80.0%,痊愈率51.4%,帕罗西汀组有效率76.5%,痊愈率47.1%,两组比较差异无统计学意义。治疗第1周末,度洛西汀组HAMD17评分显著低于帕罗西汀组,而第2、4、8 周末两组评分比较差异无统计学意义。治疗第2、4、8 周ASEX 评分度洛西汀组得分显著低于帕罗西汀组(均P<0.05),自第2 周末始,两组与基线时比较ASEX 得分均有显著下降(均P<0.05)。度洛西汀组不良反应发生率42.9%,帕罗西汀组44.1%,两组比较差异无统计学意义。结论 度洛西汀对首次发作抑郁症的性功能的改善优于帕罗西汀,或引起性功能障碍少于帕罗西汀。两者
疗效相似,但第1周度洛西汀起效较帕罗西汀快。总体不良反应相似。 相似文献
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The direct enantioseparation of duloxetine and its R-enantiomer was achieved by HPLC using hydroxypropyl-β-cyclodextrin (HP-β-CD) as a chiral selector and a vancomycin chiral
stationary phase (Chirobiotic V). Operational parameters, such as the concentration of HP-β-CD, buffer pH, organic modifiers,
temperature and flow rate, were varied in order to achieve the desired retention time and resolution. These two enantioseparation
methods developed gave a baseline resolution of the enantiomers. Finally, the HPLC-CSP method was selected to determine the
enantiomeric purity of duloxetine drug substance due to its much shorter analysis time and better resolution. The limit of
detection of this method was 0.06 μg mL−1. 相似文献
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