Sterically hindered poly (ethyleneglycol) alkanoic acids and derivatives thereof
    51.
    发明申请
    Sterically hindered poly (ethyleneglycol) alkanoic acids and derivatives thereof 有权
    受阻的聚(乙二醇)链烷酸及其衍生物

    公开(公告)号:US20080262166A1

    公开(公告)日:2008-10-23

    申请号:US12215086

    申请日:2008-06-25

    IPC分类号: C08G63/91

    摘要: The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).

    摘要翻译: 本发明提供一种空间位阻聚合物,其包含具有至少一个与链烷酸或链烷酸衍生物共价结合的末端的水溶性和非肽性聚合物主链,其中与酸或酸衍生物基团的羰基相邻的碳 具有其上的烷基或芳基。 烷基或芳基的空间效应允许更好地控制聚合物衍生物的水解稳定性。 聚合物主链可以是聚(乙二醇)。

    Multi-arm polymer prodrugs
    52.
    发明申请
    Multi-arm polymer prodrugs 审中-公开
    多臂聚合物前药

    公开(公告)号:US20080194612A1

    公开(公告)日:2008-08-14

    申请号:US12069727

    申请日:2008-02-11

    IPC分类号: A61K47/48 A61K31/436

    摘要: 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.

    摘要翻译: 本文提供水溶性前药。 本发明的前药包含具有三个或更多个臂的水溶性聚合物,其中至少三个共价连接到活性剂例如小分子上。 由于本发明的共轭物具有三种或更多种可释放地连接到多臂水溶性聚合物上的活性剂,本发明的共轭物提供聚合物尺寸和结构的最佳平衡以实现改善的药物负载。 与未修饰的母体药物相比,本发明的前药在治疗上是有效的,并且在体内表现出改善的性质。

    Polyethylene (glycol) derivatives with proximal reactive groups
    53.
    发明授权
    Polyethylene (glycol) derivatives with proximal reactive groups 有权
    具有近端反应性基团的聚乙烯(二醇)衍生物

    公开(公告)号:US07223803B2

    公开(公告)日:2007-05-29

    申请号:US11314912

    申请日:2005-12-21

    摘要: An activated, substantially water soluble poly(ethylene glycol) is provided having of a linear or branched poly(ethylene glycol) backbone and at least one terminus linked to the backbone through a hydrolytically stable linkage, wherein the terminus is branched and has proximal reactive groups. The free reactive groups are capable of reacting with active moieties in a biologically active agent such as a protein or peptide thus forming conjugates between the activated poly(ethylene glycol) and the biologically active agent.

    摘要翻译: 提供活化的基本上水溶性的聚(乙二醇),其具有直链或支链的聚(乙二醇)主链和至少一个通过水解稳定键连接至主链的末端,其中末端是支链的且具有近端反应性基团 。 自由活性基团能够与生物活性剂如蛋白质或肽中的活性部分反应,从而在活化的聚(乙二醇)与生物活性剂之间形成共轭物。

    Hydrolytically degradable alkylene oxide based polymers
    54.
    发明申请
    Hydrolytically degradable alkylene oxide based polymers 审中-公开
    水解可降解的烯化氧基聚合物

    公开(公告)号:US20060239961A1

    公开(公告)日:2006-10-26

    申请号:US10371996

    申请日:2003-02-14

    IPC分类号: A61K31/785 C08G8/28

    摘要: The present invention provides a water soluble, nonpeptidic polymer comprising two or more alkylene oxide-based oligomers linked together by hydrolytically degradable linkages such as carbonates. Typically, the oligomer portion of the polymer is an amphiphilic triblock copolymer having a central propylene oxide block or butylene oxide block positioned between two ethylene oxide blocks. The polymer can be hydrolytically degraded into oligomers under physiological conditions. In aqueous media, the polymer preferably forms thermally reversible, hydrolytically degradable hydrogels that can be used, for example, for drug delivery and related biomedical applications.

    摘要翻译: 本发明提供了一种水溶性非肽性聚合物,其包含通过可降解水解的键如碳酸酯连接在一起的两个或多个环氧烷基低聚物。 通常,聚合物的低聚物部分是具有位于两个环氧乙烷嵌段之间的中心环氧丙烷嵌段或环氧丁烷嵌段的两亲性三嵌段共聚物。 聚合物可以在生理条件下水解降解成低聚物。 在水性介质中,聚合物优选形成热可逆的水解可降解的水凝胶,其可用于例如药物递送和相关的生物医学应用。

    Hydrolytically degradable carbamate derivatives of poly(ethylene glycol)
    55.
    发明授权
    Hydrolytically degradable carbamate derivatives of poly(ethylene glycol) 有权
    聚乙二醇的水解降解氨基甲酸酯衍生物

    公开(公告)号:US07060259B2

    公开(公告)日:2006-06-13

    申请号:US11033547

    申请日:2005-01-10

    IPC分类号: A61K31/74 C08B37/02

    摘要: Poly(ethylene glycol) carbamate derivatives useful as water-soluble prodrugs are disclosed. These degradable poly(ethylene glycol) carbamate derivatives also have potential applications in controlled hydrolytic degradation of hydrogels. In such degradable hydrogels, drugs may be trapped in the gel and released by diffusion as the gel degrades, or they may be covalently bound through hydrolyzable carbamate linkages. Hydrolysis of these carbamate linkages releases the drug at a controllable rate as the gel degrades.

    摘要翻译: 公开了可用作水溶性前药的聚(乙二醇)氨基甲酸酯衍生物。 这些可降解的聚(乙二醇)氨基甲酸酯衍生物在水凝胶的可控水解降解中也具有潜在的应用。 在这种可降解的水凝胶中,药物可以被捕获在凝胶中并随着凝胶降解而被扩散释放,或者它们可以通过可水解的氨基甲酸酯键共价结合。 当凝胶降解时,这些氨基甲酸酯键的水解以可控的速率释放药物。

    Isolatable, water soluble, and hydrolytically stable active sulfones of poly(ethylene glycol) and related polymers for modification of surfaces and molecules
    56.
    发明申请
    Isolatable, water soluble, and hydrolytically stable active sulfones of poly(ethylene glycol) and related polymers for modification of surfaces and molecules 失效
    用于改性表面和分子的聚(乙二醇)和相关聚合物的可分离,水溶性和水解稳定的活性砜

    公开(公告)号:US20050209416A1

    公开(公告)日:2005-09-22

    申请号:US11112118

    申请日:2005-04-22

    申请人: J. Harris

    发明人: J. Harris

    摘要: A poly(ethylene glycol) derivative is disclosed that is activated with a sulfone moiety for selective attachment to thiol moieties on molecules and surfaces. The activated PEG is water soluble, hydrolytically stable for extended periods, and forms hydrolytically stable linkages with thiol moieties. The linkages generally are not reversible in reducing environments. The PEG derivative is useful for modifying the characteristics of substances including modifying biologically active molecules and surfaces for biocompatibility. Methods for synthesizing the active PEG and for preparing conjugates of the active PEG and other substances, including biologically active substances, are also disclosed.

    摘要翻译: 公开了用砜部分活化的聚(乙二醇)衍生物,用于选择性地连接到分子和表面上的硫醇部分。 活化的PEG水溶性,长时间水解稳定,与硫醇部分形成水解稳定的键。 联系通常在减少环境中是不可逆的。 PEG衍生物可用于改变包括改变生物活性分子和表面的物质的生物相容性的特征。 还公开了用于合成活性PEG和用于制备活性PEG和其它物质(包括生物活性物质)的缀合物的方法。

    Soluble, degradable poly(ethylene glycol) derivatives for conrollable release of bound molecules into solution
    57.
    发明申请
    Soluble, degradable poly(ethylene glycol) derivatives for conrollable release of bound molecules into solution 有权
    用于将结合分子可释放释放到溶液中的可溶性,可降解的聚(乙二醇)衍生物

    公开(公告)号:US20050171328A1

    公开(公告)日:2005-08-04

    申请号:US11051728

    申请日:2005-02-04

    申请人: J. Harris

    发明人: J. Harris

    摘要: PEG and related polymer derivatives having weak, hydrolytically unstable linkages near the reactive end of the polymer are provided for conjugation to drugs, including proteins, enzymes, small molecules, and others. These derivatives provide a sufficient circulation period for a drug-PEG conjugate, followed by hydrolytic breakdown of the conjugate and release of the bound molecule. In some cases, drugs that demonstrate reduced activity when permanently coupled to PEG maintain a therapeutically suitable activity when coupled to a degradable PEG in accordance with the invention. The PEG derivatives of the invention can be used to impart improved water solubility, increased size, a slower rate of kidney clearance, and reduced immunogenicity to a conjugate formed by attachment thereto. Controlled hydrolytic release of the bound molecule into an aqueous environment can then enhance the drug's delivery profile by providing a delivery system which employs such polymers and utilizes the teachings provided herein.

    摘要翻译: 提供在聚合物的反应性末端附近具有弱的水解不稳定键的PEG和相关的聚合物衍生物用于与药物(包括蛋白质,酶,小分子等)共轭。 这些衍生物为药物-PEG缀合物提供足够的循环周期,随后结合物的水解分解和结合分子的释放。 在一些情况下,当与PEG永久偶联时表现出降低的活性的药物在与根据本发明的可降解的PEG偶联时,保持治疗上合适的活性。 本发明的PEG衍生物可用于赋予改善的水溶性,增加的尺寸,较慢的肾清除速率,以及降低对通过其附着形成的缀合物的免疫原性。 然后通过提供使用这种聚合物并利用本文提供的教导的递送系统,将结合的分子控制的水解释放到水性环境中可以增强药物的递送分布。

    Thioester polymer derivatives and method of modifying the N-terminus of a polypeptide therewith
    58.
    发明授权
    Thioester polymer derivatives and method of modifying the N-terminus of a polypeptide therewith 有权
    硫酯聚合物衍生物和用其修饰多肽的N末端的方法

    公开(公告)号:US06908963B2

    公开(公告)日:2005-06-21

    申请号:US09973318

    申请日:2001-10-09

    CPC分类号: C07K1/13 A61K47/60

    摘要: The invention provides reagents and methods for conjugating polymers specifically to the α-amine of polypeptides in high yield. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a thioester moiety capable of specifically conjugating to the α-amine of a polypeptide having a cysteine or histidine at the N-terminus. The invention provides active thioester derivatives of PEG that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG and polypeptide. Use of these active esters to prepare PEG-proteins and PEG-peptides is described.

    摘要翻译: 本发明提供了以高产率将聚合物特异性结合多肽的α-胺的试剂和方法。 本发明提供了具有能够在N末端具有半胱氨酸或组氨酸的多肽的α-胺特异性结合的硫酯部分的单功能,双官能和多功能的PEG和相关聚合物。 本发明提供了PEG的活性硫酯衍生物,其具有与多肽的N-末端半胱氨酸或组氨酸残基的合适的反应性,以在PEG和多肽之间产生酰胺键。 描述了使用这些活性酯制备PEG-蛋白质和PEG-肽。

    DEGRADABLE HETEROBIFUNCTIONAL POLY(ETHYLENE GLYCOL) ACRYLATES AND GELS AND CONJUGATES DERIVED THEREFROM
    60.
    发明申请
    DEGRADABLE HETEROBIFUNCTIONAL POLY(ETHYLENE GLYCOL) ACRYLATES AND GELS AND CONJUGATES DERIVED THEREFROM 有权
    可降解的异戊二烯(乙二醇)丙烯酸酯和凝胶以及其衍生物

    公开(公告)号:US20120195846A1

    公开(公告)日:2012-08-02

    申请号:US13446652

    申请日:2012-04-13

    IPC分类号: A61K31/785

    摘要: A heterobifunctional poly(ethylene glycol) is provided having a hydrolytically degradable linkage, a first terminus comprising an acrylate group, and a second terminus comprising a target such as a protein or pharmaceutical agent or a reactive moiety capable of coupling to a target. Hydrogels can be prepared. The hydrogels can be used as a carrier for a protein or a pharmaceutical agent that can be readily released in a controlled fashion.

    摘要翻译: 提供具有水解可降解键的异双功能聚(乙二醇),包含丙烯酸酯基的第一末端,和包含诸如蛋白质或药物的靶的第二末端或能够与靶偶合的反应性部分。 水凝胶可以制备。 水凝胶可用作可以以受控方式容易地释放的蛋白质或药剂的载体。