This invention relates to a chemo-enzymatic synthesis of oligosaccharidesof formula 1 wherein R is selected from -OH, -N3 and -OR6 wherein R6 is selected from allyl optionally substituted by one or more methyl, propargyl optionally substituted by one or more methyl, 2-trimethylsilyl-ethyl, -(CH2)n -NH2 and -(CH2)n -N3 wherein integer n is to 10, preferably 2 or 3, R1 is selected from sialyl moiety, -SO3H and -CH(R5)-COOH wherein R5 is selected from H, alkyl and benzyl, R2 is selected from H and fucosyl, R3 is selected from H and sialyl, R4 is selected from H and fucosyl, provided that one but only one of R3 and R4 is H, and A is selected from a bond and a divalent carbohydrate linker, having important biological activities and significant commercial value for the pharmaceutical and food industry.
本发明涉及一种
化学酶合成公式1的
寡糖的方法,其中R从-OH,-N3和-OR6中选择,其中R6从烯丙基选项中选择,烯丙基可以被一个或多个甲基取代,
丙炔基可以被一个或多个甲基取代,2-三甲基
硅乙基,-(
CH2)n -NH2和-( )n -N3,其中整数n为10,优选为2或3,R1从
唾液酸基团,-SO3H和-CH(R5)-COOH中选择,其中R5从H,烷基和苄基中选择,R2从H和岩藻糖基中选择,R3从H和
唾液酸基中选择,R4从H和岩藻糖基中选择,前提是R3和R4中仅有一个是H,A从一个
化学键和双价
碳水化合物连接物中选择,具有重要的
生物活性和在制药和食品工业中有重要的商业价值。