申请人:Institute Organicheskogo Sinteza
公开号:US04434095A1
公开(公告)日:1984-02-28
A novel substance, that is a cyclic analogue of a naturally-occurring phagocytosis-stimulant peptide - threonyl-cyclo-[-N.sup..epsilon. -lysyl-prolyl-arginyl-] of the formula: ##STR1## A method for preparing threonyl-cyclo-[-N.sup..epsilon. -lysyl-prolyl-arginyl-] by way of a step-wise building-up of the peptide chain from the C-terminal by means of activated ethers of benzyloxycarbonyl-proline, tert.butyloxycarbonyl- -N.sup..epsilon. -benzyl-oxycarbonyl-lysine and tert.butyloxycarbonyl-threonine, followed by cyclization of the resulting partly blocked tetrapeptide using Woodward reagent in an excess of dimethylformamide and isolation of the desired product.
一种新的物质,是一种天然存在的吞噬刺激肽的环状类似物 - 赖氨酰-环-[-N.sup..epsilon. -赖氨酰-脯氨酰-精氨酰-]的公式为:##STR1##
一种通过从C-末端逐步建立肽链的方法制备赖氨酰-环-[-N.sup..epsilon. -赖氨酰-脯氨酰-精氨酰-],该方法使用苯甲氧羰基脯氨酰、tert.butyloxycarbonyl- -N.sup..epsilon. -苄基氧羰基赖氨酸和tert.butyloxycarbonyl-苏氨酸的活性醚,然后使用过量的二甲基甲酰胺中的伍德沃德试剂将所得到的部分阻滞的四肽环化,并分离所需的产物。