(2S,3R)-3-tert-Butoxy-2-[(2-nitro-benzenesulfonyl)-((3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yl)-amino]-butyric acid tert-butyl ester 在
三氟乙酸 作用下,
以85%的产率得到(2S,3R)-3-Hydroxy-2-[(2-nitro-benzenesulfonyl)-((2R,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yl)-amino]-butyric acid