A methodology for synthesizing amino-acid derivatives of pyranocoumarins in three steps using pyranocoumarin oximes as starting compounds was developed. A series of pyranocoumarins containing the amino acids glycine, alanine, phenylalanine, methionine, leucine, and β-alanine in their structures could be prepared using the activated ester method.

中文翻译：

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吡喃香豆素的氨基酸衍生物

开发了一种以吡喃香豆素肟为起始化合物分三步合成吡喃香豆素氨基酸衍生物的方法。使用活化酯法可以制备在其结构中含有氨基酸甘氨酸、丙氨酸、苯丙氨酸、甲硫氨酸、亮氨酸和β-丙氨酸的一系列吡喃香豆素。