[EN] NOVEL SEMI-SYNTHETIC GLYCOPEPTIDES AS ANTIBACTERIAL AGENTS<br/>[FR] NOUVEAUX GLYCOPEPTIDES SEMI-SYNTHÉTIQUES COMME AGENTS ANTIBACTÉRIENS
申请人:LEAD THERAPEUTICS INC
公开号:WO2009085562A1
公开(公告)日:2009-07-09
Semi-synthetic glycopeptides having antibacterial activity are described, in particular, the semi-synthetic glycopeptides described herein are made by chemical modification of a glycopeptide (Compound A, Compound B, Compound H or Compound C) or monosaccharide made by hydrolyzing the disaccharide moiety of the amino acid-4 of the parent glycopeptide in acidic medium to give the amino acid-4 monosaccharide; conversion of the monosaccharide to the amino-sugar derivative; acylation of the amino substituent on the amino acid-4 amino-substituted sugar moiety on these scaffolds with certain acyl groups; and conversion of the acid moiety on the macrocyclic ring of these scaffolds to certain substituted amides. Key reaction is the treatment of properly protected intermediate compound with isocyanate or carrying a Hofmann degradation of the primary amide of the 3rd amino acid asparagines with phenyl-bis-trifluoroacetate to give the primary amine. Also provided are methods for the synthesis of the compounds, pharmaceutical compositions containing the compounds, and methods of use of the compounds for the treatment and/or prophylaxis of diseases, especially bacterial infections.
本文描述了具有抗菌活性的半合成糖肽,特别是在此处描述的半合成糖肽是通过对一种糖肽(化合物A、化合物B、化合物H或化合物C)或通过在酸性介质中水解母体糖肽的氨基酸-4的二糖基团以获得氨基酸-4单糖;将单糖转化为氨基糖衍生物;酰化这些支架上氨基酸-4氨基取代糖基团上的氨基取代基团;以及将这些支架的大环环上的酸基团转化为某些取代酰胺。关键反应是将适当保护的中间化合物与异氰酸酯处理,或者将第3个氨基酸天冬氨酸的主要酰胺通过苯基-双三氟乙酸酯进行霍夫曼降解以获得主要胺基。还提供了合成这些化合物的方法,含有这些化合物的药物组合物,以及用于治疗和/或预防疾病,特别是细菌感染的化合物的使用方法。