Provided herein are water-soluble prodrugs, compositions comprising such prodrugs, and related methods of making and administering the same. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are typically covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water-soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
Eight-arm polyethylene glycol derivative, production method therefor, and modified bio-related substance thereof
申请人:XIAMEN SINOPEG BIOTECH CO., LTD.
公开号:US10434182B2
公开(公告)日:2019-10-08
Disclosed are an eight-arm polyethylene glycol (PEG) derivative (formula I), production method therefor and modified bio-related substance thereby. Wherein, one tetravalent group U together with four trivalent groups Ec form a highly symmetrical octavalent group CORE0; Lc connects the octavalent group to eight PEG chains having polydispersity or monodispersity and having n1 to n8 as the degree of polymerization thereof; the terminal of one PEG chain is connected to at least one functional group F (k≥1); said PEG chain and F therebetween can be directly connected (g=0) or be indirectly connected via a linking group L0 to a terminal end-branching group G (g=1); the latter provides more reactive sites for binding more drug molecules and increases the drug loading. The eight-arm polyethylene glycol derivative has a centrosymmetric or approximately centrosymmetric structure, and leads to more precise control of the molecular weight in large-scale production and much narrower distribution of molecular weight for products. The modified bio-related substance thereby has a more uniform and controllable performance.
本发明公开了一种八臂聚乙二醇(PEG)衍生物(式 I)、其生产方法及其改性生物相关物质。其中,一个四价基团 U 与四个三价基团 Ec 形成一个高度对称的八价基团 CORE0;Lc 将八价基团连接到八条具有多分散性或单分散性且聚合度为 n1 至 n8 的 PEG 链上;一条 PEG 链的末端与至少一个官能团 F 连接(k≥1);所述 PEG 链和 F 之间可以直接连接(g=0),也可以通过连接基团 L0 与末端支化基团 G 间接连接(g=1);后者提供了更多的反应位点,可以结合更多的药物分子,增加药物负载量。八臂聚乙二醇衍生物具有中心对称或近似中心对称结构,因此在大规模生产中可以更精确地控制分子量,产品的分子量分布也更窄。因此,改性生物相关物质的性能更均匀、更可控。
[EN] BIO-RELATED SUBSTANCE MODIFIED BY MULTIFUNCTIONALIZED POLYETHYLENE GLYCOL DERIVATIVE<br/>[FR] SUBSTANCE D'ORIGINE BIOLOGIQUE MODIFIÉE PAR UN DÉRIVÉ DU POLYÉTHYLÈNEGLYCOL MULTIFONCTIONNALISÉ<br/>[ZH] 一种多官能化聚乙二醇衍生物修饰的生物相关物质
EIGHT-ARM POLYETHYLENE GLYCOL DERIVATIVE, PRODUCTION METHOD THEREFOR, AND MODIFIEDBIO-RELATEDSUBSTANCETHEREOF
申请人:XIAMEN SINOPEG BIOTECH CO., LTD
公开号:US20180214561A1
公开(公告)日:2018-08-02
Disclosed are an eight-arm polyethylene glycol (PEG) derivative (formula I), production method therefor and modified bio-related substance thereby. Wherein, one tetravalent group U together with four trivalent groups E
c
form a highly symmetrical octavalent group CORE
0
; L
c
connects the octavalent group to eight PEG chains having polydispersity or monodispersity and having n
1
to n
8
as the degree of polymerization thereof; the terminal of one PEG chain is connected to at least one functional group F (k≥1); said PEG chain and F therebetween can be directly connected (g=0) or be indirectly connected via a linking group L
0
to a terminal end-branching group G (g=1); the latter provides more reactive sites for binding more drug molecules and increases the drug loading. The eight-arm polyethylene glycol derivative has a centrosymmetric or approximately centrosymmetric structure, and leads to more precise control of the molecular weight in large-scale production and much narrower distribution of molecular weight for products. The modified bio-related substance thereby has a more uniform and controllable performance.