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    • 2. 发明申请
    • REDOX-STABLE, NON-PHOSPHORYLATED CYCLIC PEPTIDE INHIBITORS OF SH2 DOMAIN BINDING TO TARGET PROTEIN, CONJUGATES THEREOF, COMPOSITIONS AND METHODS OF SYNTHESIS AND USE
    • SH2结合到目标蛋白上的REDOX-STABLE,非磷酸化循环肽抑制剂,其结合物,组合物和合成和使用方法
    • WO0073326A3
    • 2001-05-25
    • PCT/US0015201
    • 2000-06-02
    • US GOV HEALTH & HUMAN SERVROLLER PETER PLONG YA QUILUNG FENG DI TKING C RICHTERYANG DAJUN
    • ROLLER PETER PLONG YA-QUILUNG FENG-DI TKING C RICHTERYANG DAJUN
    • A61K38/00C07K7/06C07K7/56C07K14/47
    • C07K7/56A61K38/00A61K47/64C07K7/06
    • The present invention provides a compound of formula (I) in which L is sulfur, sulfoxide, oxygen or methylene, and in which, optionally, one or more of Tyr , Glu , Val , Met and Tyr is modified. Also provided is a compound of formula (II) in which (i)aa is Adi and aa is Glu or (ii) each of aa and is Adi, L is sulfur, sulfoxide, oxygen or methylene, and in which, optionally, one or more of Tyr , Val , Met and Tyr is modified. The above compounds (and their conjugates) bind to an SH2 domain in a protein comprising an SH2 domain, are non-phosphorylated, are redox-stable in vivo , and are characterized by an IC50 in vivo of less than about 4.0 mu M with respect to the SH2 domain in Grb2. Upon binding to the SH2 domain of Grb2, a compound as described above has a turn conformation. Optionally, there is a conservative or neutral amino acid substitution at either one or both of Leu and Gly . Also provided by the present invention is a conjugate comprising a compound as described above and a carrier agent, a composition comprising (i) a compound or a conjugate as described above and (ii) a carrier, a method of inhibiting binding of an SH2 domain in a protein comprising an SH2 domain to a target protein in an animal, wherein the SH2 domain is contacted with a target protein-binding inhibiting effective amount of a compound or a conjugate as described above, and a method of synthesizing such conjugates.
    • 本发明提供式(I)化合物,其中L是硫,亚砜,氧或亚甲基,并且其中任选地,一个或多个Tyr 3,Glu 4,Val 6, 8>和Tyr <9>被修饰。 还提供了式(II)化合物,其中(i)aa 1是Adi,aa 4是Glu或(ii)a a 1各自为Ad 1,L为硫,亚砜,氧或 亚甲基,并且其中任选地,Tyr 3,Val 6,Met 8和Tyr 9中的一个或多个被修饰。 上述化合物(及其缀合物)与包含SH2结构域的蛋白质中的SH2结构域结合,未被磷酸化,在体内是氧化还原稳定的,其特征在于IC 50 相对于Grb2中的SH2结构域,体积小于约4.0μM。 当结合到Grb2的SH2结构域时,如上所述的化合物具有转向构象。 任选地,在Leu 2和Gly 7中的任一个或两个上存在保守或中性氨基酸取代。 本发明还提供了包含上述化合物和载体剂的组合物,包含(i)如上所述的化合物或缀合物和(ii)载体的组合物,抑制SH2结构域结合的方法 在包含SH2结构域的蛋白质中与动物中的靶蛋白质相结合,其中SH2结构域与靶蛋白结合抑制有效量的上述化合物或结合物接触,以及合成这种缀合物的方法。