[EN] A METHOD FOR OBTAINING CRYSTALLINE LACTO-N-TETRAOSE AND LACTO-N-NEOTETRAOSE PRECURSORS AND MIXTURES THEREOF<br/>[FR] PROCÉDÉ POUR OBTENIR DES PRÉCURSEURS DE LACTO-N-TÉTRAOSE ET DE LACTO-N-NEOTÉTRAOSE CRISTALLIN ET DES MÉLANGES DE CEUX-CI
申请人:GLYCOM AS
公开号:WO2013091660A1
公开(公告)日:2013-06-27
A mixture of, preferably a mixture consisting essentially of, an lacto-N-tetraose (LNT) precursor (1) and an lacto-N-neotetraose (LNnT) precursor (2), (formula 1, 2), where R is a group removable by hydrogenolysis and R3 is either a group removable by hydrogenolysis or H, a method of crystallizing 1 and/or 2 from said mixture, and the use of said mixture for making a mixture consisting essentially of LNnT and LNT for use as a pharmaceutically or nutritionally active ingredient. The precursors can be made by reacting an acceptor of formula 5, (formula 5), wherein R is a group removable by hydrogenolysis, R1 is acyl, Ri is acyl or H, R3 is selected from a group removable by hydrogenolysis, acyl, silyl and an acetal type group and Y is selected from alkanoylamido, haloalkanoylamido, -NAc2, benzamido, alkoxycarbonylamino, haloalkoxycarbonylamino, benzyloxycarbonylamino, azido, phthalimido, tetrachlorophthalimido, 2,3- diphenylmaleimido and 2,3-dimethylmaleimido, with a donor of formula 6, (formula 6), wherein R4 is acyl and Xi is selected from halogen, -OC(=NH)CCl3, -OAc, -OBz or -SR5, wherein R5 is selected from alkyl, substituted phenyl and unsubstituted phenyl, followed by one or more deprotection steps.
一种混合物,优选基本上由
乳糖-N-四糖(L
NT)前体(1)和
乳糖-N-新四糖(LN
NT)前体(2)(式1,2)组成,其中R是通过
氢解可移除的基团,R3是可通过
氢解移除的基团或H,从该混合物中结晶1和/或2的方法,以及该混合物用于制备基本上由LN
NT和L
NT组成的混合物,作为药用或营养活性成分的用途。这些前体可以通过反应一个受体式5(式5),其中R是通过
氢解可移除的基团,R1是酰基,Ri是酰基或H,R3是从可通过
氢解移除的基团、酰基、
硅基和
缩醛型基团中选择的,Y是从烷
酰胺基、卤代烷
酰胺基、-NAc2、
苯甲
酰胺基、烷
氧羰基
氨基、卤代烷
氧羰基
氨基、苄
氧羰基
氨基、
叠氮基、邻
苯二甲
酰亚胺基、四
氯邻
苯二甲
酰亚胺基、2,3-二
苯基马来
酰亚胺基和2,3-二
甲基马来
酰亚胺基中选择的,与一个供体式6(式6)反应,其中R4是酰基,Xi是从卤素、-OC(=NH)
CCl3、-
OAc、-OBz或-SR5中选择的,其中R5是从烷基、取代的
苯基和未取代的
苯基中选择的,随后进行一个或多个
脱保护步骤来制备。