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- The preparation and analysis of new sweetener L aspartyl D alanine isopropyl ester were reported. L Asp D Ala OiPr was obtained from L aspartic acid and D alamine. 采用新工艺新方法制备新型甜味剂天－丙二肽，以L－天冬氨酸为中间体，与D－丙氨酸异丙酯缩合，一步反应得产物，产率高、成本低。
- Synthesis technology of aspartame from L aspartic acid and L phenylalanine was studied in this paper.At first,each step of the synthesis was investigated separately. 探讨了以天冬氨酸和苯丙氨酸为原料制备甜味剂阿斯巴甜的合成工艺。
- Keywords synthesis;chiral lipophilic macrocyclic oxo polyamines;L glutamic acid;L aspartic acid; 合成;手性脂质性大环多胺;L-谷氨酸;L-天门冬氨酸;
- 4.The preparation and analysis of new sweetener L aspartyl D alanine isopropyl ester were reported.L Asp D Ala OiPr was obtained from L aspartic acid and D alamine. 采用新工艺新方法制备新型甜味剂天-丙二肽，以L-天冬氨酸为中间体，与D-丙氨酸异丙酯缩合，一步反应得产物，产率高、成本低。
- 3.The preparation and analysis of new sweetener L aspartyl D alanine isopropyl ester were reported.L Asp D Ala OiPr was obtained from L aspartic acid and D alamine. 采用新工艺新方法制备新型甜味剂天-丙二肽，以L-天冬氨酸为中间体，与D-丙氨酸异丙酯缩合，一步反应得产物，产率高、成本低。
- A salt or ester of aspartic acid. 天门冬胺酸盐，天门冬胺酸酯一种天门冬胺酸盐或脂
- Aspartic acid can be broken down in the KREBS CYCLE. 在三羧酸循环中天冬氨酸可以被分解。
- Asparagines An AMINO ACID formed by the addition of ammonia to aspartic acid. 天冬酰胺：天冬氨酸加上氨基后形成的一种氨基酸。
- Synthetic organic compound (a dipeptide) of phenylalanine and aspartic acid. 由苯丙氨酸（phenylalanine）和天门冬氨酸合成的有机化合物（二）。
- Aspartic acid An AMINO ACID formed by transamination, in which the amino group of dlutamic acid is transferred to oxaloacetic acid. 天冬氨酸：由转氨基作用形成的一种氨基酸，谷氨酸的氨基基团被转移到草酰乙酸中。
- Aspartame: Synthetic organic compound (a dipeptide) of phenylalanine and aspartic acid. 天门冬氨醯苯丙氨酸甲酯:由苯丙氨酸和天门冬氨酸合成的有机化合物。
- DL aspartic acid was produced by ammonolysis of maleic anhydride in a titanium autoclave. 在一钛材高压釜中,对顺丁烯二酸酐(马来酸酐)进行氨化反应合成了DL天冬氨酸。
- L - aspartic acid -β - methyl ester L-天冬氨酸-β-甲酯
- MAIN OUTCOME MEASURES:The contents of N Acetyl aspartic acid (NAA), phosphocreatine and creatine(Pcr+cr),choline compound(Cho) and lactic acid(Lac). 主要观察指标:N-乙酰门冬氨酸(NAA)、磷酸肌酸和肌酸(Pcr+cr)、胆碱类复合物(Cho)和乳酸(Lac)的含量。
- PASP-PEG block structure copolymer,comb shaped PASP-PEG block structure copolymer,aspartic acid and glycine,glutamic acid or propalanine copolymer are prepared. 还可以对聚天冬氨酸的侧链进行改性,引入烷基或烯烃基、反应活性高的氨基酸酯、磺酸基等功能性基团,使其得到更广泛的应用。
- Effect of N methyl D,L aspartate(NMA) on fat deposition and approach of the mechanism were studied in finishing swine. 研究了不同剂量 N-甲基 -D,L-天门冬氨酸 ( NMA)对肥育猪脂肪代谢的影响。
- OBJECTIVE To synthesize the presumable bone-targeting nonsteroidal anti-inflammatory agents.METHODS L-Asp6 was prepared by aspartic acid which was protected. 目的合成可能具有骨靶向性的非甾体抗炎药。
- L-Asparagine is a non-essential, neutrall, genetically coded amino acid. It is a crystalline amino acid, found in many plants, that is easily hydrolyzed to aspartic acid. 天冬酰胺是一种非必需的中性晶体氨基酸，许多植物里都有，易于水解为天门冬氨酸。
- Four amino-acid ligands(glycine, serine, aspartic acid, phenylalanine) was selected to coordinate with vanadyl cation to form amino-acid vanadyl complexes. 选择甘氨酸、丝氨酸、天冬氨酸和苯丙氨酸四种氨基酸与氧钒离子配位形成氨基酸氧钒配合物。
- The polyaspartic acid is synthesized by means of pyrocondensation polymerization ,using aspartic acid as a monomer.The effect of temperature and time on yield is studied. 以天门冬氨酸为单体,采用加热缩聚法,合成了聚天冬氨酸,研究了温度、时间对收率的关系。
