A compound that has the structure ** Formula ** in which n is 3-10； X is C-R11 or N, where R11 is H, OH, SH, F, Cl, SO2R7, NO2, trifluoromethyl, methoxy or CO-R7, wherein R7 is C3-C8 alkyl, alkenyl, alkynyl, cycloalkyl or aryl； Z is R2 is H or NR3R4, wherein R3 and R4 are each independently H, C1-C6 alkyl or C3-C8 cycloalkyl； R5 is OH or SH； R6 is H, OH, F, Cl, SO2R15, NO2, trifluoromethyl, methoxy or CO-R15, wherein R15 is alkyl, alkenyl, alkynyl, C3-C8 cycloalkyl or aryl； R12 is H, OH, SH, F, Cl, SO2R15, NO2, trifluoromethyl, methoxy or CO-R15, wherein R15 is alkyl, alkenyl, alkynyl, C3-C8 cycloalkyl or aryl； and R13 and R14 are each independently H, SH, F, Cl, SO2R15, NO2, trifluoromethyl, methoxy or CO-R15, wherein R15 is alkyl, alkenyl, alkynyl, C3-C8 cycloalkyl or aryl, or a salt of the compound.Un compuesto que tiene la estructura**Fórmula** en la que n es 3-10； X es C-R11 o N, en la que R11 es H, OH, SH, F, Cl, SO2R7, NO2, trifluorometilo, metoxi o CO-R7, en la que R7 es alquilo, alquenilo, alquinilo, cicloalquilo C3-C8 o arilo； Z es R2 es H o NR3R4, en la que R3 y R4 son cada uno independientemente H, alquilo C1-C6 o cicloalquilo C3-C8； R5 es OH o SH； R6 es H, OH, F, Cl, SO2R15, NO2, trifluorometilo, metoxi o CO-R15, en la que R15 es alquilo, alquenilo, alquinilo, cicloalquilo C3-C8 o arilo； R12 es H, OH, SH, F, Cl, SO2R15, NO2, trifluorometilo, metoxi o CO-R15, en la que R15 es alquilo, alquenilo, alquinilo, cicloalquilo C3-C8 o arilo； y R13 y R14 son cada uno independientemente H, SH, F, Cl, SO2R15, NO2, trifluorometilo, metoxi o CO-R15, en la que R15 es alquilo, alquenilo, alquinilo, cicloalquilo C3-C8 o arilo, o una sal del compuesto.
