4-(1-oxo-2-(2,3,4,6-tetra-O-acetyl-D-mannopyranosyl)ethylamino)-2,2,6,6-tetramethylpiperidin-1-oxyl 、
B-cyclohexylcatecholborane 在
N,N-二甲基丙烯基脲 作用下,
以
二氯甲烷 为溶剂,
以126 mg的产率得到(2R,3R,4S,5S,6S)-2-acetoxymethyl-6-(2-((1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)amino)-2-oxoethoxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate