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    • 2. 发明申请
    • PEPTIDE LINKAGE UNIT COMPRISING METHYLENE PHOSPHINIC ACID
    • 含有亚甲基磷酸的肽链接单元
    • WO1993014114A1
    • 1993-07-22
    • PCT/US1993000228
    • 1993-01-11
    • THE SCRIPPS RESEARCH INSTITUTEJANDA, Kim, D.WIRSCHING, PeterIKEDA, Shoji
    • THE SCRIPPS RESEARCH INSTITUTE
    • C07K05/02
    • C07K7/02A61K38/00B60W40/09C07F9/301C07F9/3241C07K5/021F16H2059/003F16H2312/02
    • A peptide linkage unit is employed for joining peptide and pseudopeptide sequences, including peptides and pseudopeptides that inhibit aspartic proteinase enzymes. The peptide linkage unit includes a phosphinate methylene ammonium linkage in place of a peptidyl carboxamide bond. If the peptide linkage unit is incorporated into a peptide sequence that would otherwise serve as an aspartic proteinase substrate and if it is positioned at a cleavage site within such peptide sequence, the phosphinate methylene ammonium linkage is resistant to cleavage and serves as an exploding transition state analog of such cleavage site. When so incorporated, the phosphinate methylene ammonium linkage can bind or interfere with the active site of aspartic proteinase enzymes and inhibit its activity. Preferred inhibitors contain a phosphinic acid methylene amine group joining the P1 and P1' residues and have a length of 3 to about 15 amino acid residues.
    • 肽连接单元用于连接肽和假肽序列,包括抑制天冬氨酸蛋白酶的肽和假肽。 肽连接单元包括次膦酸亚甲基铵键代替肽基羧酰胺键。 如果将肽连接单元并入到否则将用作天冬氨酸蛋白酶底物的肽序列中,并且如果其位于该肽序列内的切割位点,则次膦酸亚甲基铵键对切割具有抗性并且用作爆炸过渡态 类似物的这种切割位点。 当这样结合时,次膦酸亚甲基铵键可以结合或干扰天冬氨酸蛋白酶的活性位点并抑制其活性。 优选的抑制剂含有连接P1和P1'残基的次膦酸亚甲基基团,并且具有3至约15个氨基酸残基的长度。