Preparation of azlactones represented by the formula
wherein R is a substituted or unsubstituted alkyl, aryl or nitrogen containing heterocyclic group, and R1 is an N-blocked amino acid residue or peptide chain, and stereoisomers thereof,
by oxidizing the corresponding saturated azlactone with a benzoquinone oxidizing agent in the presence of a base. The unsaturated azlactones, some of which are novel, can be converted to dehydropeptides, which are useful as intermediates for preparing novel biologically active compounds, or themselves have biological activity.
式所代表的氮内酯的制备
其中 R 是取代或未取代的烷基、芳基或含氮杂环基团,R1 是 N-受阻
氨基酸残基或肽链,以及它们的立体异构体、
在碱存在下,用苯醌氧化剂氧化相应的饱和氮内酯。不饱和氮内酯(其中一些是新型的)可转化为脱
水肽,这些脱
水肽可作为制备新型
生物活性化合物的中间体,或本身具有
生物活性。