申请人:Takara Shuzo Co., Ltd.
公开号:US05633345A1
公开(公告)日:1997-05-27
To provide a process for the total synthesis of a cyclic peptide, which is useful as antifungal drug, and novel compounds prepared by the synthesis method. A process for synthesizing a cyclic peptide represented by the following formula (I): ##STR1## wherein X1, X2, X4 and X7 are independently N-methyl-.alpha.-amino acid or .alpha.-hydroxy acid, provided that at least one of X1, X2, X4 and X7 is a .alpha.-hydroxy acid; X3, X6 and X8 are independently .alpha.-amino acid; X5 is a cyclic amino acid; X9 is a N-methyl-.alpha.-amino acid or .alpha.-hydroxy acid substituted by a hydroxy group; and the dotted lines represent intramolecular hydrogen bonds; which process comprises cyclizing a corresponding linear peptide between X5 and X6 via a peptide bond, and a novel compound represented by the formula (I).
提供一种合成环肽的方法,该环肽可用作抗真菌药物,并提供通过该合成方法制备的新化合物。所述合成环肽的方法如下式(I)所示:##STR1## 其中,X1、X2、X4和X7分别独立地为N-甲基-α-氨基酸或α-羟基酸,但至少其中一个为α-羟基酸;X3、X6和X8分别独立地为α-氨基酸;X5为环状氨基酸;X9为被羟基取代的N-甲基-α-氨基酸或α-羟基酸;虚线表示分子内氢键。该方法包括通过肽键在X5和X6之间环化相应的线性肽,并提供一种由式(I)表示的新化合物。