Methyl-7,9-di-O-acetyl-5-acetylamino-4-O-(tert-butyldimethylsilyl)-3,5-didesoxy-D-glycero-β-D-galacto-2-nonulopyranosidonsaeure-methylester 在
三(2-氯乙基)胺 、
三苯基膦 、
偶氮二甲酸二乙酯 作用下,
以21%的产率得到Methyl-7,9-di-O-acetyl-5-acetylamino-8-azido-4-O-(tert-butyldimethylsilyl)-3,5,8-tridesoxy-L-glycero-β-D-galakto-2-nonulopyranosidonsaeure-methylester