A Simple Approach to Amino Acids with a Diazo Function in the Side Chain Starting from Aspartic Acid [2,2-Bis(trifluoromethyl)-5-oxo-1,3-oxazolidin-4-yl]acetic acid chloride (2) and diazoalkanes react to give the amino acid derivatives 2,2-bis(trifluoromethyl)-4-(3-diazo-2-oxopropyl)-1,3-oxazolidin-5-ones 3. Compounds 3 are useful intermediates for the synthesis of various natural and nonnatural α-amino acids and their derivatives. The synthetic potential is demonstrated i.a. by syntheses of 2-amino-5-hydroxy-4-oxopentanoic acid and 2-amino-4-oxohexanoic acid derivatives.
从
天冬氨酸[
2,2-双(三
氟甲基)-5-
氧代-1,3-
恶唑啉-4-基]
乙酸氯化物 (2) 和重
氮烷烃反应生成
2,2-双(三
氟甲基)-4-(3-重
氮-2-
氧代丙基)-1,3-
恶唑啉-5-
酮 3 的
氨基酸衍
生物的简单方法。化合物 3 是合成各种
天然和非
天然δ-
氨基酸及其衍生物的有用
中间体。2-amino-5-hydroxy-4-oxopentanoic acid 和 2-amino-4-oxohexanoic acid 衍
生物的合成证明了其合成潜力。