(S)-1-[(R)-6-((4S,6S)-6-Benzyloxymethyl-2,2-dimethyl-[1,3]dioxan-4-yl)-4-methyl-2,3-dioxo-hexanoyl]-piperidine-2-carboxylic acid methyl ester 在
盐酸 作用下,
以
甲醇 为溶剂,
以70%的产率得到(S)-1-{2-[(2R,3R,6S)-6-((S)-3-Benzyloxy-2-hydroxy-propyl)-2-hydroxy-3-methyl-tetrahydro-pyran-2-yl]-2-oxo-acetyl}-piperidine-2-carboxylic acid methyl ester