A method of diversification of human milk oligosaccharides (HMOs) or precursors thereof, compounds obtainable by the method, and uses and compositions involving such compounds. The method comprises the steps of
a) providing at least one compound or a mixture of the compounds selected from the group consisting of:
- optionally sialylated and/or fucosylated lactose derivatives of general formula 2 and salts thereof:
wherein
R is a group removable by hydrogenolysis,
R1 independently of each other is fucosyl or H
R4 independently of each other is sialyl or H,
provided that the compound of general formula 2 is not R-glycoside of lactose, if provided alone;
- optionally sialylated and/or fucosylated lactose derivatives of general formula 4 and salts thereof:
wherein
R1 independently of each other is fucosyl or H
R4 independently of each other is sialyl or H,
provided that the compound of general formula 4 is not lactose, if provided alone;
- lacto-N-tetraose (LNT):
- lacto-N-tetraose (LNT) derivatives of the following formula:
wherein R is a group removable by hydrogenolysis;
- lacto-N-neotetraose (LNnT):
- lacto-N-neotetraose (LNnT) derivatives of the following formula:
wherein R is a group removable by hydrogenolysis;
b) adding at least one enzyme comprising a transglycosidase activity to the at least one compound or a mixture of compounds provided according to step a); and
c) incubating the mixture obtained according to step b).
一种人乳低聚糖(HMO)或其前体的多样化方法,通过该方法可获得的化合物,以及涉及此类化合物的用途和组合物。该方法包括以下步骤
a) 提供至少一种选自以下组别的化合物或化合物混合物:
- 通式 2 的任选
硅烷基化和/或岩藻糖基化的
乳糖衍
生物及其盐:
其中
R 是可通过氢解去除的基团、
各自独立的 R1 是岩藻糖基或 H
R4各自独立地为
硅戊基或H、
如果单独提供,通式 2 的化合物不是
乳糖的 R-糖苷;
- 通式 4 的任选
硅烷基化和/或岩藻糖基化
乳糖衍
生物及其盐:
其中
R1 独立地互为岩藻糖基或 H
R4 独立地互为
硅戊基或 H、
如果单独提供,通式 4 的化合物不是
乳糖;
- 乳-N-四糖(LNT):
- 下式的乳-N-四糖(LNT)衍
生物:
其中 R 是可通过氢解去除的基团;
-
乳-N-新四糖(LNNT):
- 下式的
乳-N-新四糖(LNNT)衍
生物:
其中 R 是可通过氢解去除的基团;
b) 向根据步骤 a) 提供的至少一种化合物或化合物混合物中添加至少一种包含转糖苷酶活性的酶;以及
c) 培养根据步骤 b) 得到的混合物。