New peptides and a process for their preparation
    41.
    发明授权
    New peptides and a process for their preparation 失效
    新肽及其制备方法

    公开(公告)号:US4420424A

    公开(公告)日:1983-12-13

    申请号:US319267

    申请日:1981-11-09

    摘要: What are disclosed are pentapeptides, useful for influencing the maturing of T-lymphocytes, of the formulaG--K--Q--X--MwhereinG is arginine, lysine, ornithine, or homoarginine, or is an unsubstituted or substituted .omega.-aminoalkanoyl, .omega.-guanidinoalkanoyl, or .omega.-dimethylaminoalkanoyl;K is a basic amino acid such as lysine, arginine, homoarginine, or ornithine;Q is L- or D-glutamic acid, d-aspartic acid, or D-.alpha.-aminoadipic acid;X is L-valine or L-isoleucine; andM is an L- or D-aminoacid having a hydrophobic side chain, or an ester or amide of such an acid.

    摘要翻译: 所公开的是可用于影响T淋巴细胞成熟的五肽,式+ TI,GKQXM,其中G是精氨酸,赖氨酸,鸟氨酸或高精氨酸,或是未取代或取代的ω-氨基烷酰基,ω-胍基烷酰基或 ω-二甲基氨基烷酰基; K是碱性氨基酸,如赖氨酸,精氨酸,高精氨酸或鸟氨酸; Q是L-或D-谷氨酸,d-天冬氨酸或D-α-氨基己二酸; X是L-缬氨酸或L-异亮氨酸; 并且M是具有疏水侧链的L-或D-氨基酸,或这种酸的酯或酰胺。

    Process for the manufacture of LH-RH and LH-RH analogs using
Glu-His(DnP)-OH
    42.
    发明授权
    Process for the manufacture of LH-RH and LH-RH analogs using Glu-His(DnP)-OH 失效
    使用Glu-His(DnP)-OH制备LH-RH和LH-RH类似物的方法

    公开(公告)号:US4275001A

    公开(公告)日:1981-06-23

    申请号:US120924

    申请日:1980-02-12

    摘要: What is disclosed is a method for the manufacture of LH-RH and LH-RH analogs, which comprises reacting Glu-His(DnP)-OH with the corresponding peptide having a free amino group and protected carboxy groups in a solvent as used in peptide chemistry and with the addition of 3-hydroxy-4-oxo-3,4-dihydro-1,2,3-benzotriazine (HOObt) and a carbodiimide and then splitting off the Dnp-(2,4-dinitrophenyl) group. The new method greatly reduces the degree of histidine racemization. The invention also provides a new dipeptide, i.e. Glu-His(Dnp)-OH.

    摘要翻译: 所公开的是用于制备LH-RH和LH-RH类似物的方法,其包括使Glu-His(DnP)-OH与相应的肽具有游离氨基和保护的羧基在溶剂中用于肽 并加入3-羟基-4-氧代-3,4-二氢-1,2,3-苯并三嗪(HOObt)和碳二亚胺,然后分离Dnp-(2,4-二硝基苯基)基团。 新方法大大降低了组氨酸外消旋化的程度。 本发明还提供了一种新的二肽,即Glu-His(Dnp)-OH。