Method for producing dipeptide derivative containing disubstituted amino acid residue
申请人:NAGASE & CO., LTD.
公开号:US09605020B2
公开(公告)日:2017-03-28
A method for producing a dipeptide that has a protected N-terminal and is represented by formula (1) or a salt of the dipeptide, said method comprising condensing an α-monosubstituted amino acid that has a protected N-terminal and is represented by formula (2) or glycine or a salt thereof with a disubstituted amino acid that is represented by formula (3) or a salt thereof in the presence of a condensing agent [in each of the formulae, substituents are as defined in the description or the like].
A rapid and sensitive method for chiroptical sensing of α-amino acids <i>via</i> click-like labeling with <i>o</i>-phthalaldehyde and <i>p</i>-toluenethiol
作者:Bo Li、Jie Zhang、Li Li、Gong Chen
DOI:10.1039/d0sc05749e
日期:——
practical method for comprehensive chiroptical sensing of free αamino acids with streamlined operation and high sensitivity via dual CD/UV measurements is developed. The assay takes advantage of an efficient and selective three-component labeling reaction of primary amines with o-phthalaldehyde and p-toluenethiol reagents to derivatize the NH2 group of analytes into an isoindole. The covalent labeling generates
[EN] PEPTIDE INHIBITORS OF FOCAL ADHESION KINASE ACTIVITY AND USES THEREOF<br/>[FR] INHIBITEURS PEPTIDIQUES DE L'ACTIVITÉ DE KINASE D'ADHÉRENCE FOCALE ET UTILISATION ASSOCIÉES
申请人:UNIV ARIZONA
公开号:WO2021042064A1
公开(公告)日:2021-03-04
This disclosure provides peptides which have an affinity for the focal adhesion targeting (FAT) domain of focal adhesion kinase (FAK). In particular, the peptides are modified and derived from the sequence of the LD2 alpha helical domain of paxillin (e.g., LD2 peptides), the LD4 domain of paxillin (e.g., LD4 peptides), and CD8 peptides. These peptides are capable of blocking an interaction between paxillin and FAK, thereby inhibiting FAK activity related to FAK-paxillin interaction. The invention further provides uses for such peptides as therapeutics for the treatment of cancer and other diseases characterized with FAK activity and/or expression (e.g., fibrosis).
Improved synthesis of unnatural amino acids for peptide stapling
作者:Bo Li、Jie Zhang、Yongjuan Xu、Xiaoxiao Yang、Li Li
DOI:10.1016/j.tetlet.2017.05.007
日期:2017.6
more nucleophilic enolate salt, thereby can significantly enhance yield under room temperature. Final Fmoc protection was also dramatically facilitated in one-pot sequential manner by adding EDTA-2Na as the nickel chelator. Synthesis of α-bisalkenyl aminoacid was also accomplished by achiral complex approach with high yield and efficacy. Accordingly, five most commonly used N-Fmoc protected α-alkenyl
[EN] ANTICANCER PEPTIDES<br/>[FR] PEPTIDES À ACTIVITÉ ANTICANCÉREUSE
申请人:IDP DISCOVERY PHARMA S L
公开号:WO2019025432A1
公开(公告)日:2019-02-07
The present invention provides a peptide of formula (I) or a pharmaceutical salt thereof wherein "m", "n", "p", and "q" represent integers and are selected from 0 and 1; and "r" is comprised from 1 to 10; a linker birradical of formula (II), which is connecting an alpha carbon atom of an amino acid located at position "i" in the peptide sequence of formula (I) with an alpha carbon atom of an amino acid located at position "i+4" or "i+7"in the peptide sequence of formula (I); a C-terminal end corresponding to –C(O)R4; and a N-terminal end corresponding to –NHR5. Alternatively, the present invention provides a peptide or a pharmaceutical salt thereof which has an amino acid sequence with an identity from 85% to 95% with respect to sequence SEQ ID NO: 9: The peptides of the invention show anticancer activity. (I)
本发明提供了公式(I)的肽或其药物盐,其中“m”、“n”、“p”和“q”代表整数,可选择为0和1;“r”由1到10组成;公式(II)的连接双基团,它将公式(I)中位于位置“i”的氨基酸的α-碳原子与公式(I)中位于位置“i+4”或“i+7”的氨基酸的α-碳原子连接起来;一个对应于–C(O)R4的C-末端;以及一个对应于–NHR5的N-末端。或者,本发明提供了一种具有与序列SEQ ID NO: 9的同源性在85%到95%之间的氨基酸序列的肽或其药物盐。本发明的肽显示出抗癌活性。(I)