Dl-天门冬氨酸 反应生成D-天门冬氨酸 参考文献:Optical Resolution Of Aspartic Acid By Using Copper Complexes Of Optically Active Amino Acids 标题:Optical Resolution Of Aspartic Acid By Using Copper Complexes Of Optically Active Amino Acids 摘要:在具有光学活性的氨基酸铜复合物存在下,Dl-天门冬氨酸得到了高光学纯度的解析.结晶的竞争性抑制解释了光学解析的机理. Doi:10.1246/bcsj.56.653
专利号:US-6350595-B1 优先权日:1997-10-28 标题:Synthesis of polynucleotides having random sequences 发明人:NEUNER PHILIPPE 权利人:ISTITUTO DI RICERCHE DI MOLECO 摘要:Subject of this invention is a process for the chemical synthesis of polynucleotides having totally or partially random sequences, based on the utilization, as synthesis monomer units for the random sequence part, or presynthesized mononucleotides and dinucleotides. Said synthesis is carried out on separate supports, so that on each of those supports is alternated at least one reaction cycle wherein a mixture of said dinucleotides is bound, with at least one reaction cycle wherein a mononucleotide is bound, and that in a preferred embodiment at the end of the n cycles required for a codon synthesis, the supports are mixed and then redivided into one or more reaction containers. The resulting polynucleotides are such that, for the random sequence part, each trinucleotide unit is fit to match only a limited number of codons, predefined for each unity in number and sequence, and the genetic code degeneracy effects can thus be eliminated. FIG. 1 shows the chemical structure of the dinucleotides utilized as monomer units for the synthesis of codons forming the final sequence.
专利号:US-2008287649-A1 优先权日:2006-12-29 标 题 :Methods for the synthesis of cyclic peptides 发明人:CHEN LIN; HAN YEUN-KWEI; ROBERTS CHRISTOPHER R 权利人:CHEN LIN; HAN YEUN-KWEI; ROBERTS CHRISTOPHER R 摘要:Methods for the synthesis of cyclic peptides are provided, as well as novel dipeptide compounds. The methods include the solid phase synthesis of a dipeptide, which is the coupled to a second peptide in a solid phase reaction. The peptide is then cyclized following the coupling reaction. The methods and dipeptides are particularly useful for the synthesis of MC-4 receptor agonist peptides.
专利号:WO-9312076-A1 优先权日:1991-12-13 标题:Reagents for automated synthesis of peptide analogs 发明人:WEBB THOMAS ROY 权利人:CORVAS INT INC 摘要:Reagents suitable for synthesis of peptide analogs using automated peptide synthesis and procedures for synthesis of peptide analogs are provided.
专利号:US-2024035023-A1 优先权日:2022-06-24 标题 :Computer implemented method for engineering fluorinase enzymes for synthesis of fluorophenyl compounds 发明人:R PRAVIN KUMAR; G GLADSTONE SIGAMANI; L ROOPA; B K NAVEEN; SHETTY ANUJ J; M LIKITH 权利人:KCAT ENZYMATIC PRIVATE LTD 摘要:The present invention discloses a computer-implemented method for engineering fluorinase enzymes towards the synthesis of fluorophenyl compounds. Limited or no mechanistic details of fluorinase enzymes have hindered progress in understanding their catalytic mechanisms for synthesizing synthetic organofluorine compounds. Through a comprehensive computational screening process, specific methionine-sulfonium phenyl substrates, including [(3S)-3-amino-3-carboxypropyl][2,5-difluoro-4-(4-methoxy-2,4-dioxobutyl)phenyl]methylsulfonium, were designed and optimized using quantum chemical optimization techniques. This methodology uncovers crucial information on F— ion attack conformation and the catalytic mechanism of the substrate, leading to the formation of Methyl 3-oxo-4-(2,4,5-trifluorophenyl)butanoate. Furthermore, a protein sequence and 3D modeling-based enzyme screening process was employed to identify the most suitable enzyme for this substrate. The identified enzyme was then engineered using the mechanistic insights gained from the studies, resulting in improved substrate scope, stability and catalytic efficiency. This computer-based approach offers an efficient and precise alternative to traditional trial-and-error methods, advancing the field towards the successful synthesis fluorophenyl compounds.
专利号:US-5283293-A 优先权日:1990-12-14 标 题:Reagents for automated synthesis of peptide analogs 发明人:WEBB THOMAS R 权利人:CORVAS INC 摘要:Reagents suitable for synthesis of peptide analogs using automated peptide synthesis and procedures for synthesis of peptide analogs are provided.
专利号:US-2010279334-A1 优先权日:2007-10-31 标题 :Cyclodipeptide synthases (cdss) and their use in the synthesis of linear dipeptides 发明人:SAUGUET LUDOVIC; THAI ROBERT; BELIN PASCAL; LECOQ ALAIN; GENET ROGER; PERNODET JEAN-LUC; GONDRY MURIEL 权利人:KYOWA HAKKO BIO CO LTD; CENTRE NAT RECH SCIENT; UNIV PARIS SUD 11; COMMISSARIAT ENERGIE ATOMIQUE 摘要:Use of CDSs in the synthesis of linear dipeptides, and applications thereof for the in vivo and in vitro synthesis of linear dipeptides, in particular Phe-Leu, Leu-Phe, Phe-Phe, Phe-Tyr, Tyr-Phe, Leu-Leu, Leu-Tyr, Tyr-Leu, Phe-Met, Met-Phe, Leu-Met, Met-Leu, Tyr-Met, Met-Tyr, Met-Met, Tyr-Tyr, Ile-Met, Met-Ile, Leu-Ile, Ile-Leu using the corresponding polynucleotides.
参考标题:Structure-Guided Engineering OfPseudomonas DacunhaeL-Aspartate β-Decarboxylase ForL-Homophenylalanine Synthesis 作者:Min Zhang,Pengfei Hu,Yu-Cong Zheng,Bu-Bing Zeng,Qi Chen,Zhi-Jun Zhang,Jian-He Xu 摘要:Structure-Guided Engineering Of Pseudomonas Dacunhae L-Aspartate β-Decarboxylase (Aspbdc) Resulted In A Double Mutant (R37A/t382G) With Remarkable 15,400-Fold Improvement In Specific Activity Reaching 216 Mu/mg, Towards The Target Substrate 3(R)-Benzyl-L-Aspartate. A Novel Strategy For Enzymatic Synthesis Of L-Homophenylalanine Was Developed By Using The Variant As Biocatalyst Affording 75% Product
合成参考文献
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