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- It elaborates the definitions of epimer and epimerization, states the applications of epimerization in medicine and pesticide,and points out its expansive prospect . 阐述了差向异构体和差向异构化的定义。差向异构化技术在医药和农药中间体中应用广泛,前景广阔。
- Application of ion exchange technology in the purification,epimerization analysis and detection of sugar was introduced. 阐述了离子交换技术在糖的纯化、差向异构化及分析检测方面的应用。
- The effects of chloride and boric acid on the epimerization of D-arabinose to D-ribose in aqueous solution using ammonium paramolybdate as catalyst was studied. 研究了在仲钼酸铵催化D-阿拉伯糖差向异构化为D-核糖的水相体系中,氯化物和硼酸助催化剂对反应的影响。
- Its physicochemical characters and biosynthesis pathway were reviewed in this paper.In addition, the biosynthetic genes, resistance genes and genes encoding epimerization of sugar were introduced. 本文对其理化特征、合成机制做了综述,同时介绍了与卑霉素相关的合成基因、抗性基因和编码糖差向异构作用的基因。
- When N-(4-hydroxycyclohexyl) acetamide with the cis-trans ratio 66:34 as start material, it can make up 66 to 68 percent trans isomer of total cis and trans isomers in the equilibrium solution through epimerization. 当以顺反比66:34的4-乙酰氨基环己醇为原料时,平衡产物中,反式异构体可占总醇分率的66%25~68%25。
- RESULTS The chlortetracycline's epimer, tetracycline and its epimer, as impurities in chlortetracycline have been determined by the liquid chromatogram and its first order mass spectrum. 结果得到金霉素样品液相色谱图以及液相色谱峰对应的一级质谱图。对谱图进行分析归纳,推测金霉素样品中含有四环素、差向异构四环素和差向异构金霉素杂质组分。
- Study on the Epimerization of Cypermethrin 氯氰菊酯的差向异构化研究
- Epimerization of dl-menthol with sodium hydroxide as catalyst 氢氧化钠催化dl-薄荷醇异构化的研究
- Keywords cypermethrin;epimerization;side reaction;benzoin ester; 高效氯氰菊酯;差向异构化;副反应;苯偶因酯;
- Effect of catalyst promoter on epimerization of D-arabinose to D-ribose 助催化剂对D-阿拉伯糖差向异构化为D-核糖的影响
- Keywords Luminescent bacterium;Tetracycline;Epimer;Veterinary medicine; 发光菌;四环素;差向异构体;兽药;
- Keywords L-arabinose;L-ribose;Epimerization;Trioxidmolybdenum;Column Chromatogram; 阿拉伯糖;L-核糖;立体异构化;三氧化钼;柱色谱;
- Keywords L-ribose;synthesis;regioselective reaction;catalytic epimerization;microbial synthesis; 核糖;合成;立体选择性反应;催化立体异构化;微生物合成;
- Keywords sialic acid derivative;stereoselective synthesis;epimerization;reaction nechanism; 唾液酸衍生物;立体选择性合成;差向异构体;反应机理;
- The isolation and identification of two new epimer from the mother liquid of testosterone 睾丸素母液中两个新差向异构体的分离与结构鉴定
- Isolation and identification of two new epimer from the mother liquid of megestrol acetate 安宫黄体酮母液中两个新化合物的分离与结构鉴定
- Keywords Two-dimensional NMR;Chemical shift;Methyl gibbercllate;Epimer;Configuration .; 化学位移;赤霉酸甲酯;差向异构体;构型;
- Keywords Soyasterol;epimer;high performance liquid chromatography;gas chromatography-mass spectrometry; 大豆甾醇;差向异构体;高效液相色谱;气相色谱-质谱;
- ~1H-NMR characteristic spectra of Epimer UDCA CDCA and deterimination the Major composition in bear bile powder has been reported. 本文研究了差向异构体熊去氧胆酸和鹅去氧胆酸的~1H-NMR谱学特征。 利用其特征谱峰鉴别熊胆粉中的熊去氧胆酸和鹅去氧胆酸并测定其相对含量。
- Keywords Curcumol;Microbial-transformation;Metabolite;Epimer;Aspergillus niger;Penicillium janthinellum;and Cunninghamella blakesleana; 莪术醇;微生物转化;代谢产物;差向异构体;黑曲霉;微紫青霉;短刺小克银汉霉;