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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）。
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。
Keywords Seryl histidine dipeptide;DNA;Cleavage;Hydrolysis mechanism; 丝组二肽;DNA;切割;水解机理;
Results This dipeptide was confirmed good in quality by physico-chem ical determination. 结果合成的双肽经理化检测，质量高。
Objective To explore the method of chemical synth esis of L-alanyl-L-glutamine dipeptide. 目的探讨L-丙氨酰-L-谷氨酰胺双肽的化学合成方法。
Conclusion Dipeptide synthetized by this me thod is simple, convenient and with good guality. 结论采用本法合成谷氨酰胺双肽具有简便、快速、质量高等优点。
The rest of desired dipeptide aldehydes were prepared by oxidation of their dipeptide alcohols. 然后在Parikh-Doering条件下氧化二肽醇，所得产物通过LC/MS制备分离得到二肽醛。
The conformations of serine and threonine dipeptide in gas are explored using ABEEM/MM fluctuating model. 相对其他极化力场模型,该模型具有计算量较小的特点。
Methods: Diester,diimide and dipeptide mimic compounds were synthesized by conjugated the amino groups and acid groups with diols or diacids links. 方法:通过酯化、酰胺反应由不同的二醇或二酸连接加巴喷丁和普瑞巴林合成二酯、酰胺、拟肽类等化合物。
Methods L-alanyl-L -glutamine dipeptide was prepared by condensation and ammoniation reaction of L -glutamine and 2-D-chloropropionyl chloride. 方法以L-谷氨酰胺和2-D-氯丙酰氯为原料，通过缩合、胺化等反应，合成L-丙氨酰-L-谷氨酰胺双肽；
The Boc protected phenylalanine (Boc-Phe-OH) reacted with phenylalanine amide to give the first dipeptide Boc-Phe-Phe-NH_2 in 86% yield. 以叔丁氧羰酰基(Boc)作为苯丙氨酸的氨基保护基，先制备苯丙氨酸酰胺三氟乙酸盐，再用叔丁氧羰酰基(Boc)保护的苯丙氨酸与其缩合得二肽片段Boc-Phe-Phe-NH_2，产率86%25。
Gly-Asp(OBzl) 2 dipeptide was synthesized by DCC method,then Boc-Arg(NO 2 )-Gly-Asp(OBzl) 2 was synthesized by the method of mixed anhydrides. 采用二环己基碳二亚胺法(DCC)合成了二肽Gly Asp(OBzl) 2 ,然后利用混合酸酐法得到全保护RGD三肽:Boc Arg(NO2 ) Gly Asp(OBzl) 2 三肽;
Carnosine is a kind of dipeptide in muscle.We pay much more attention on carnosine because of its high effect and low toxicity. 摘要肌肽是主要存在动物肌肉中的二肽，作为一种新型高效低毒的天然抗氧化剂日益受到关注。
In this study, a novel chemical method was used to prepare the precursor dipeptide Gly-Asp diamide of RGD at large scale with low cost. 因此本文根据 RGD 的化学结构特点,采用化学- 酶法相结合的RGD 合成策略:先用新颖的化学法得到产量较高的前体GD 二肽酰胺,这一步反应操作简单，而且成本低廉；
Moreover,the stabilization of the complexes,especially the influence of the optical activity of dipeptide on the stabilization has been discussed. 对配合物的稳定性进行了讨论,着重介绍了二肽的光学异构对配合物稳定性的影响。
The interaction of leucine dipeptide with calf thymus DNA was studied by UV-visible spectroscopy,circulating voltammetry and viscosity measurement. 利用紫外-可见光谱法、循环伏安法和黏度法研究了亮氨酸二肽与小牛胸腺DNA的相互作用。
The interaction between phenylalanine dipeptide (Phe-Phe) and calf thymus DNA (ct-DNA) was studied by using UV spectra and fluorescence spectra. 利用紫外吸收光谱、荧光光谱研究了苯丙氨酸二肽与小牛胸腺DNA之间的相互作用。
Complete digestion of the peptide with pepsin followed by chromatography yielded a dipeptide containing Phe and Leu, plus a tripeptide containing Tyr and Gly in a 1:2 ratio. 用胃蛋白酶完全水解后经层析得到含Phe和Leu的二肽，还有一个Tyr:Gly为1:2的三肽。
The Boc and Bzl protected tyrosine (Boc-Tyr(Bzl)-OH) was allowed to react with proline methyl ester hydrochloride to form the second dipeptide Boc-Tyr(Bzl)-Pro-OMe in 42% yield. 选择叔丁氧羰酰基(Boc)和苄基(Bzl)作为酪氨酸的氨基和侧链保护基，与脯氨酸甲酯盐酸盐缩合得二肽片段Boc-Tyr(Bzl)-Pro-OMe，产率42%25。
Abstract A modified dipeptide has been isolated from Veratrum nigrum var.ussuriense for the first time and confirmed to be aurantiamide acetate by spectroscopic analysis. 摘要由乌苏里藜芦中首次分离出1种变型的二肽类化合物，经光谱分析，鉴定为橙黄胡椒酰胺。