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    • 7. 发明授权
    • Therapeutically active polypeptides or acid addition salts and a process
for producing such compounds
    • 治疗活性多肽或酸加成盐及其制备方法
    • US4356119A
    • 1982-10-26
    • US78424
    • 1979-09-24
    • Hans Kofod
    • Hans Kofod
    • C07K7/06A61K38/00A61K38/04A61P3/08A61P3/10C07C231/00C07K1/113C07K5/093C07K5/097C07K5/103C07K5/113C07K7/14C07K14/645C07K14/66C07C103/52A61K37/00
    • C07K5/0825C07K14/645C07K14/66C07K5/0819C07K5/1005C07K5/1021C07K7/14A61K38/00Y02P20/55
    • Polypeptide derivatives of the formula:a--x--b--y--cwherein x represents an acidic amino acid, preferably glu or asp,y represents a basic amino acid, preferably arg, lys or his,z represents hydrogen or a small protective group for the .alpha.-amino group in x,b represents a bond, a single amino acid or a peptide having up to 10 amino acids in the chain, andc represents --NR.sup.1 R.sup.2, wherein R.sup.1 and R.sup.2 are selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 alkyl and C.sub.3 -C.sub.8 cycloalkyl, or R.sup.1 and R.sup.2 together with the attached nitrogen atom form a heterocyclic group optionally containing an additional hetero atom, orc represents --OR.sup.3, wherein R.sup.3 is selected from the group consisting of C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.8 cycloalkyl, benzyl, phenacyl, phthalimidomethyl, .beta.-methylthioethyl, 4-picolyl or substituted benzyl, orc is a single amino acid, except leu, or an amino acid derivative --z--d with the proviso that --z cannot be leu, and d may be --NR.sup.1 R.sup.2 or OR.sup.3, wherein R.sup.1, R.sup.2, and R.sup.3 are as defined above,or acid addition salts of such peptides, may be produced by peptide synthesis methods known per se.The polypeptides inhibit the glucose stimulated secretion of insulin from Langerhans's islets without affecting the secretion of glucagon, and potentiate the effect of insulin on the metabolism of glucose in isolated fat cells and in vivo potentiate the metabolism of glucose.
    • 下式的多肽衍生物:axbyc其中x表示酸性氨基酸,优选glu或asp,y表示碱性氨基酸,优选arg,lys或his,z表示氢或x中的α-氨基的小保护基 ,b表示键,单个氨基酸或链中具有至多10个氨基酸的肽,c表示-NR1R2,其中R1和R2选自氢,C1-C6烷基和C3-C8 环烷基或R 1和R 2与连接的氮原子一起形成任选地含有另外的杂原子的杂环基,或c表示-OR 3,其中R 3选自C 1 -C 6烷基,C 3 -C 8环烷基,苄基, 苯甲酰甲基,邻苯二甲酰亚氨基甲基,β-甲硫基乙基,4-吡啶甲基或取代的苄基,或c是除leu之外的单个氨基酸,或氨基酸衍生物,其条件是-z不能为leu,d可为-NR1R2或 OR3,其中R1,R2和R3如上定义,o 这种肽的R酸加成盐可以通过本身已知的肽合成方法产生。 多肽抑制葡萄糖刺激的胰岛素从朗格汉斯岛分泌而不影响胰高血糖素的分泌,并且增强胰岛素对分离的脂肪细胞中葡萄糖代谢的作用并且体内增强葡萄糖的代谢。