作者:Mitat Aydin、Norbert Lucht、Wilfried A. König、Rudolf Lupp、Günther Jung、Günther Winkelmann
DOI:10.1002/jlac.198519851117
日期:1985.11.12
The structures of the amphiphilic peptide antibiotics herbicolin A and B were determined by application of physical methods, chemical degradation, and partial syntheses. Herbicolin B is a lipodepsinonapeptide with the sequence DH-Abu-L-Thr-D-aThr-D-Leu-Gly-D-Gln-Gly-N-Me-L-aThr-L-Arg (DH-Abu = 2,3-dehydro-α-aminobutyric acid). The C-terminal Arg residue forms a lactone ring with the hydroxy group of
通过应用物理方法,化学降解和部分合成,确定了两亲性肽类抗生素草本植物A和B的结构。Herbicolin B是一种具有序列DH-Abu-L-Thr-D-aThr-D-Leu-Gly-D-Gln-Gly- N -Me-L-aThr-L-Arg(DH-Abu = 2, 3-脱氢-α-氨基丁酸)。C末端的Arg残基与L-Thr的羟基形成内酯环,而N末端被(R)-3-羟基十四烷酸残基酰化。草本植物素A的主要成分与草本植物素B的不同之处在于,其他的D-葡萄糖部分以1-α-糖苷键与3-羟基十四烷酸残基连接。因此,草药草素A构成了迄今已知的第一种糖脂去氧核糖肽抗生素。