申请人:NOF CORPORATION
公开号:US20210147624A1
公开(公告)日:2021-05-20
The invention provides a high-molecular-weight polyethylene glycol derivative that does not cause vacuolation of cells. The degradable polyethylene glycol derivative is represented by the following formula (1):
wherein m is 1-7, n1 and n2 are each independently 45-682, p is 1-4, R is an alkyl group having 1-4 carbon atoms, Z is an oligopeptide with 2-8 residues composed of neutral amino acids excluding cysteine, Q is a residue of a compound having 2-5 active hydrogens, X is a functional group capable of reacting with a bio-related substance, and L
1
, L
2
, L
3
, L
4
and L
5
are each independently a single bond or a divalent spacer.
该发明提供了一种高分子量聚乙二醇衍生物,不会导致细胞发生空泡变性。可降解的聚乙二醇衍生物由以下式(1)表示:其中m为1-7,n1和n2分别独立为45-682,p为1-4,R为含有1-4个碳原子的烷基,Z为由2-8个中性氨基酸组成的寡肽,不包括半胱氨酸,Q为具有2-5个活性氢的化合物残基,X为能够与生物相关物质发生反应的功能基团,L1、L2、L3、L4和L5分别独立为单键或二价空间基团。