Amino acid derivatives for peptide synthesis
    25.
    发明授权
    Amino acid derivatives for peptide synthesis 失效
    用于肽合成的氨基酸衍生物

    公开(公告)号:US5455363A

    公开(公告)日:1995-10-03

    申请号:US957677

    申请日:1992-10-07

    摘要: Compounds of formula I are described, ##STR1## wherein n is equal to one or two, R.sub.1 stands for hydrogen or an amino protecting group, R.sub.2 represents hydrogen or a carboxyl protecting group and R.sub.3 4-methyltriphenylmethyl, 4,4'-dimethyltriphenylmethyl, 4,4',4"-trimethyltriphenylmethyl. Furthermore described are compounds of formula I which are reactive and suitable for coupling reactions and are derived from I with R.sub.2 =H by activation of the carboxyl group.The compounds mentioned above can be used as starting materials for the synthesis of peptides. They are more suitable than analogous compounds of formula I, wherein R.sub.3 represents hydrogen or a carbamoyl protecting group used hitherto.

    摘要翻译: 描述式I化合物,其中n等于1或2,R1代表氢或氨基保护基,R2代表氢或羧基保护基,R3,4-甲基三苯基甲基,4,4'-二甲基三苯基甲基 ,4,4',4“ - 三甲基三苯基甲基。 此外还描述了反应性和适用于偶联反应的式I化合物,并且通过活化羧基得到R 2 = H的I化合物。 上述化合物可以用作合成肽的起始原料。 它们比类似式I化合物更合适,其中R 3表示氢或迄今使用的氨基甲酰基保护基。

    Protected amino acids and process for the preparation thereof
    29.
    发明授权
    Protected amino acids and process for the preparation thereof 失效
    受保护的氨基酸及其制备方法

    公开(公告)号:US5324833A

    公开(公告)日:1994-06-28

    申请号:US509102

    申请日:1990-04-13

    摘要: Compounds of the formula I, ##STR1## in which 'R.sub.1 is an amino protective group, and n stands for 1 or 2, R.sub.1 denotes hydrogen or an amino protective group, R.sub.2 denotes hydrogen or a carboxyl protective group and R.sub.3 denotes triphenylmethyl, 4-monomethoxy-trityl or 4,4'-dimethoxy-trityl, and reactive carboxylic acid derivatives of such compounds of the formula I in which R.sub.2 stands for hydrogen, are described.These compounds can be used as starting materials for the preparation of peptides. They are more suitable for this than are analogous compounds of the formula I in which R.sub.3 denotes hydrogen or one of the carbamoyl protective groups hitherto customary.

    摘要翻译: 式Ⅰ化合物,其中R1为氨基保护基,n为1或2,R1为氢或氨基保护基,R2为氢或羧基保护基,R3为 三苯基甲基,4-单甲氧基 - 三苯甲基或4,4'-二甲氧基三苯甲基,以及其中R2代表氢的式Ⅰ化合物的反应性羧酸衍生物。 这些化合物可以用作制备肽的起始材料。 它们比类似的式I化合物更适合于其中,R3表示氢或迄今为止常用的氨基甲酰基保护基之一。