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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 . 闡述了差向異構體和差向異構化的定義。差向異構化技術(shù)在醫藥和農藥中間體中應用廣泛,前景廣闊。
- Application of ion exchange technology in the purification,epimerization analysis and detection of sugar was introduced. 闡述了離子交換技術(shù)在糖的純化、差向異構化及分析檢測方面的應用。
- 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. 研究了在仲鉬酸銨催化D-阿拉伯糖差向異構化為D-核糖的水相體系中,氯化物和硼酸助催化劑對反應的影響。
- 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. 本文對其理化特征、合成機制做了綜述，同時(shí)介紹了與卑霉素相關(guān)的合成基因、抗性基因和編碼糖差向異構作用的基因。
- 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. 當以順?lè )幢?6:34的4-乙酰氨基環(huán)己醇為原料時(shí),平衡產(chǎn)物中,反式異構體可占總醇分率的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. 結果得到金霉素樣品液相色譜圖以及液相色譜峰對應的一級質(zhì)譜圖。對譜圖進(jìn)行分析歸納,推測金霉素樣品中含有四環(huán)素、差向異構四環(huán)素和差向異構金霉素雜質(zhì)組分。
- Study on the Epimerization of Cypermethrin 氯氰菊酯的差向異構化研究
- Epimerization of dl-menthol with sodium hydroxide as catalyst 氫氧化鈉催化dl-薄荷醇異構化的研究
- Keywords cypermethrin;epimerization;side reaction;benzoin ester; 高效氯氰菊酯;差向異構化;副反應;苯偶因酯;
- Effect of catalyst promoter on epimerization of D-arabinose to D-ribose 助催化劑對D-阿拉伯糖差向異構化為D-核糖的影響
- Keywords Luminescent bacterium;Tetracycline;Epimer;Veterinary medicine; 發(fā)光菌;四環(huán)素;差向異構體;獸藥;
- Keywords L-arabinose;L-ribose;Epimerization;Trioxidmolybdenum;Column Chromatogram; 阿拉伯糖;L-核糖;立體異構化;三氧化鉬;柱色譜;
- Keywords L-ribose;synthesis;regioselective reaction;catalytic epimerization;microbial synthesis; 核糖;合成;立體選擇性反應;催化立體異構化;微生物合成;
- Keywords sialic acid derivative;stereoselective synthesis;epimerization;reaction nechanism; 唾液酸衍生物;立體選擇性合成;差向異構體;反應機理;
- The isolation and identification of two new epimer from the mother liquid of testosterone 睪丸素母液中兩個(gè)新差向異構體的分離與結構鑒定
- Isolation and identification of two new epimer from the mother liquid of megestrol acetate 安宮黃體酮母液中兩個(gè)新化合物的分離與結構鑒定
- Keywords Two-dimensional NMR;Chemical shift;Methyl gibbercllate;Epimer;Configuration .; 化學(xué)位移;赤霉酸甲酯;差向異構體;構型;
- Keywords Soyasterol;epimer;high performance liquid chromatography;gas chromatography-mass spectrometry; 大豆甾醇;差向異構體;高效液相色譜;氣相色譜-質(zhì)譜;
- ~1H-NMR characteristic spectra of Epimer UDCA CDCA and deterimination the Major composition in bear bile powder has been reported. 本文研究了差向異構體熊去氧膽酸和鵝去氧膽酸的~1H-NMR譜學(xué)特征。 利用其特征譜峰鑒別熊膽粉中的熊去氧膽酸和鵝去氧膽酸并測定其相對含量。
- Keywords Curcumol;Microbial-transformation;Metabolite;Epimer;Aspergillus niger;Penicillium janthinellum;and Cunninghamella blakesleana; 莪術(shù)醇;微生物轉化;代謝產(chǎn)物;差向異構體;黑曲霉;微紫青霉;短刺小克銀漢霉;
