DRUG CONJUGATES

摘要

A compound having the formula Y-A-Z, wherein: A is a 5, 6, or 7 member ring that is monocyclic or is fused to 1 to 3 additional 4 to 8 member rings; wherein ring A and, independently, the fused additional rings are carbocyclic or heterocyclic, and saturated or unsaturated, wherein unsaturated rings are aromatic or non-aromatic; wherein Y and Z are substituents at adjacent positions on ring A; Y represents: Z represents: X and E represent O, S, or NR^a or NR^b; each of a, b, c, d, e and f independently represents 0 or 1; a+c equals 0, 1, or 2; b+d equals 0, 1, or 2; a+b+c+d+e+f equals 1, 2, or 3; provided that when f is 1, then d is 1, and when d is 0, then f is 0; and when both e and b are 0, then neither R¹ nor R² is chloro or bromo; v represents 0 or 1, provided that when v is 0, then J is hydrogen, a metal ion, or a quaternary ammonium ion, and X is O and G is H; either G is hydrogen, a metal ion, a quaternary ammonium ion, lower alkyl, or comprised of a pharmaceutically active chemical compound or the precursor thereof; or X-G represents a carbonyl-activating group; J is lower alkyl, aryl, heteroaryl, omega-hydroxycarbonyl-(lower alkyl), omega-(lower alkoxy)carbonyl-(lower alkyl), omega-(X-G)-carbonyl-(lower alkyl) group, or comprised of a specific binding agent; and R^a, R^b, R¹, R², R³, R⁴ are as defined in the specification.