主权项 |
1. A compound of Formula Iwherein R1 is H, Cl, Br, N(CH3)2, or methoxy;
R2 is H or OH; each R3 is independently C1-6alkyl; X is CH2, C(O), or CH═CH; Q is C0-6alkyl; R4 is OH, SO3H, CO2H, PO3H2, CONR5R5, NR5R5; or NHC(O)CH2NR5R5; each R5 is independently H, OH, C1-6alkyl, C0-6alkylCO2H, C0-6 alkylSO3H, C0-6alkylPO3H2, C(O)C0-6alkylCO2H, C(O)C0-6alkylSO3H, C(O)C0-6alkylPO3H2, or CH(R7)C0-6alkyCO2H; and R7 is C0-6alkylCO2H, C0-6alkylOH, C0-6alkylSO3H, or C0-6alkylPO3H2. |