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Drug conjugates and their use for treating cancer, an autoimmune disease or an infectious disease

  • US 20060074008A1
  • Filed: 07/31/2003
  • Published: 04/06/2006
  • Est. Priority Date: 07/31/2002
  • Status: Active Grant
First Claim
Patent Images

1. A compound of the Formula Ia:


  • Lprivate use character ParenopenstAa-Ww

    Yy-D)p



    Ia or a pharmaceutically acceptable salt or solvate thereof wherein, L- is a Ligand unit;

    -A- is a Stretcher unit;

    a is 0 or 1;

    each —

    W—

    is independently an Amino Acid unit;



    Y—

    is a Spacer unit;

    w is an integer ranging from 0 to 12;

    y is 0, 1 or 2;

    p ranges from 1 to about 20; and

    -D is a Drug unit of the formula embedded imagewherein, independently at each location;

    R2 is selected from —

    H and —

    C1-C8 alkyl;

    R3 is selected from —

    H, —

    C1-C8 alkyl, —

    C3-C8 carbocycle, —

    O—

    (C1-C8 alkyl), -aryl, —

    C1-C8 alkyl-aryl, —

    C1-C8 alkyl-(C3-C8 carbocycle), —

    C3-C8 heterocycle and —

    C1-C8 alkyl-(C3-C8 heterocycle);

    R4 is selected from —

    H, —

    C1-C8 alkyl, —

    C3-C8 carbocycle, —

    O—

    (C1-C8 alkyl), -aryl, —

    C1-C8 alkyl-aryl, —

    C1-C8 alkyl-(C3-C8 carbocycle), —

    C3-C8 heterocycle and —

    C1-C8 alkyl-(C3-C8 heterocycle) wherein R5 is selected from —

    H and -methyl;

    or R4 and R5 join, have the formula —

    (CRaRb)n

    wherein Ra and Rb are independently selected from —

    H, —

    C1-C8 alkyl and —

    C3-C8 carbocycle and n is selected from 2, 3, 4, 5 and 6, and form a ring with the carbon atom to which they are attached;

    R6 is selected from —

    H and —

    C1-C8 alkyl;

    R7 is selected from —

    H, —

    C1-C8 alkyl, —

    C3-C8 carbocycle, —

    O—

    (C1-C8 alkyl), -aryl, —

    C1-C8 alkyl-aryl, —

    C1-C8 alkyl-(C3-C8 carbocycle), —

    C3-C8 heterocycle and —

    C1-C8 alkyl-(C3-C8 heterocycle);

    each R8 is independently selected from —

    H, —

    OH, —

    C1-C8 alkyl, —

    C3-C8 carbocycle and —

    O—

    (C1-C8 alkyl);

    R9 is selected from —

    H and —

    C1-C8 alkyl;

    R10 is selected from embedded imageZ is —

    O—

    , —

    S—

    , —

    NH—

    or —

    N(R14)—

    ;

    R11 is selected from —

    H, —

    OH, —

    NH2, —

    NHR14, —

    R14)2, —

    C1-C8 carbocycle, —

    O—

    (C1-C8 alkyl), -aryl, —

    C1-C8 alkyl-aryl, —

    C1-C8 alkyl-(C3-C8 carbocycle), —

    C3-C8 heterocycle and —

    C1-C8 alkyl-(C3-C8 heterocycle);

    or R11 is an oxygen atom which forms a carbonyl unit (C═

    O) with the carbon atom to which it is attached and a hydrogen atom on this carbon atom is replaced by one of the bonds in the (C═

    O) double bond;

    each R12 is independently selected from -aryl and —

    C3-C8 heterocycle;

    R13 is selected from —

    H, —

    OH, —

    NH2, —

    NHR14, —

    N(R14)2, —

    C1-C8 alkyl, —

    C3-C8 carbocycle, —

    O—

    (C1-C8 alkyl), -aryl, —

    C1-C8 alkyl-aryl, —

    C1-C8 alkyl-(C3-C8 carbocycle), C3-C8 heterocycle and —

    C1-8 alkyl-(C3-C8 heterocycle); and

    Each R14 is independently —

    H or —

    C1-C8 alkyl.

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