Derivatives of PSAs are synthesised, in which a reducing and/or nonreducing end terminal sialic acid unit is transformed into a N - hydroxysuccinimide (NHS) group. The derivatives may be reacted with substrates, for instance substrates containing amine or hydrazine groups, to form non-cross-linked/crosslinked polysialylated compounds. The substrates may, for instance, be therapeutically useful drugs, peptides or proteins or drug delivery systems.
P
SAs 衍
生物的合成,是将还原性和/或非还原性末端
硅酸单元转化为 N-羟基琥珀
酰亚胺(NHS)基团。这些衍
生物可与底物(例如含有胺或
肼基团的底物)反应,形成非交联/交联多聚
氨酰化合物。例如,底物可以是具有治疗作用的药物、肽或蛋白质或给药系统。