4S)-statine ((3S,4S)-4-amino-3-hydroxy-6-methylheptanoic acid) (1) and (3S,4S)-AHPPA (3S,4S)-4-amino-3-hydroxy-5-phenylpentanoic acid) (2), were synthesized starting from D-glucosamine (3) as a chiral pool. Two routes for the transformation of D-glucosamine to key intermediates, which are applicable to the synthesis of threo-β-hydroxy-γ-amino acids, were investigated. The successful route involved
生物学上重要的苏-β-羟基-γ-
氨基酸,(3S,4S)-statine ((3S,4S)-4-amino-3-hydroxy-6-methylheptanoic acid) (1) 和 (3S,4S)- A
HPPA (3S,4S)-4-amino-3-hydroxy-5-phenylpentanoic acid) (2) 从
D-葡糖胺 (3) 开始合成为手性池。研究了将 D-
氨基葡萄糖转化为关键
中间体的两条路线,适用于合成苏式-β-羟基-γ-
氨基酸。成功的路线包括 C(6)-
碳降解和
D-葡糖胺的 C(4)-羟基的消除,分 8 步,总产率为 30%,以提供 (4R,5S)-2-oxo-5-vinyloxazolidine- 4-
甲醛二
甲基乙缩醛 (17),已被用作合成目标化合物的通用
中间体。