There are disclosed amino acid derivatives represented by the following general formula (I): ##STR1## wherein L.sup.1 and L.sup.2 represent an amino acid residue etc., A.sup.1 and A.sup.3 represent C.dbd.O, A.sup.2 represents an alkylene group etc., m and n represent an integer of 1 to 5, V represents --NHC(.dbd.NH)NH.sub.2 etc., W represents --COOH etc., R.sup.1 and R.sup.2 represent hydrogen atom, alkyl group etc., R.sup.3 and R.sup.4 represent hydrogen etc. and X and Y represent --NH-- or --O-- and pharmaceutically acceptable salts thereof and agents for inhibiting tumor matastasis containing the compounds, and the amino acid derivatives exhibit high activity for inhibiting tumor metastasis and weak platelet aggregation inhibition activity and weak anticoagulation activity.
以下是一般公式(I)所代表的
氨基酸衍
生物:##STR1## 其中 L.sup.1 和 L.sup.2 代表
氨基酸残基等,A.sup.1 和 A.sup.3 代表 C.dbd.O,A.sup.2 代表烷基等,m 和 n 代表 1 到 5 的整数,V 代表 --NHC(.dbd.NH)NH.sub.2 等,W 代表 --COOH 等,R.sup.1 和 R.sup.2 代表氢原子,烷基等,R.sup.3 和 R.sup.4 代表氢等,X 和 Y 代表 --NH-- 或 --O--,以及其药学上可接受的盐和抑制肿瘤转移的药物,该
氨基酸衍
生物表现出高抑制肿瘤转移活性和弱血小板聚集抑制活性和弱抗凝活性。