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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
In Session 11, venoconstrictor dose-response curves to six doses (0.1-33.33 ng min-1) of ( - )noradrenaline acid tartrate were established at congestion pressures 30 and 45 mmHg.
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An x-ray diffraction structural study of the acid tartrate of 3-(1-methyl-2-octahydroindolyl)-1-propanol gave the absolute configuration and conformational and structural features of the cation and tartrate anion.
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The absolute configuration was determined for 3-[N-methyl-2-cyclopenta(b)pyrrolidinyl]-1-propanol acid tartrate dihydrate and the conformational aspects of its cation and tartrate anion were studied.
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The molecular structure of N-(Β-hydroxyethyl)cis-syn-cis-dicyclopenta[b,e]piperidinium acid tartrate was investigated by x-ray diffraction analysis, and the absolute configuration of its chiral centers was determined.
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| | Basic data useful for the resolution of DL-threo-1-p-nitrophenyl-2-amino-1, 3-propanediol with tartaric acid were studied. Pure samples of D- and L-threo-1-p-nitrophenyl-2-amino-1, 3-propanediol, their bitartrates and normal tartrates were prepared and their physical constants determined (Table 1). Mixed melting point curve of D- and L-threo-1-p-nitro-phenyl-2-amino-1, 3-propanediol (Fig. 1) indicated the presence of a racemic compound as evidenced by a shortening of the melting range at 1:1 composition. I... | | 研究了应用酒石酸来分拆DL-threo-1-对-硝基苯-2-氨基-1,3-丙-二醇为旋光体的基本数据。首先制备了D-和L-threo-1-对硝基苯-2-氨基-1,3-丙二醇,它們底酸性酒石酸盐和正酒石酸鹽,测定了物理常數(表1)。D-和L-threo-1-对-硝基苯-2-氨基-1,3-丙二醇的混合熔点曲線提示了混旋化合物的存在(圖1)。事实上,DL-化合物和其各別旋光体在水中的溶解度也不同(圖2). 酸性酒石酸盐和正酒石酸鹽在甲醇中,以及前者在水中的溶解度曲線,均經分別测定(圖3—5)。据此,我們建議了通过酸性酒石酸鹽,以甲醇或水为溶剂来提取的,旋光体分拆方法。 | | 文摘来源 | |   |
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