Synthesis of pyridazine acetic acid derivatives possessing aldose reductase inhibitory activity and antioxidant properties
摘要:
N-Acetic acid derivatives of 4-carboxy-6-arylpyridazin-3-ones were synthesized for the dual purpose of inhibiting aldose reductase and exhibiting antioxidant properties. All the prepared compounds showed a significant in vitro aldose reductase inhibitory effect (10(-5) M less than or equal to IC50 less than or equal to 10(-4) M). The spatial configuration of the most active derivative 4f (4-i-PrC6H4 at C-6, IC50 = 0 95 x 10(-5) M) was compared with pharmacophore requirements of the aldose reductase inhibitor site using a molecular modeling system. The antioxidant action of 4a-f was also studied in vitro. Compound 4c (4-ClC6H4 at C-6, IC50 = 1.56 x 10(-3) M) was the most effective at scavenging the superoxide anion whereas compound 4a (C6H5 at C-6, IC50 = 1.28 x 10(-3) M) was the most active at inhibiting lipid peroxidation. In addition, biological activities (log 1/IC50) for most of the data sets could be correlated directly to lipophilic, electronic and steric parameters.
Synthesis of pyridazine acetic acid derivatives possessing aldose reductase inhibitory activity and antioxidant properties
摘要:
N-Acetic acid derivatives of 4-carboxy-6-arylpyridazin-3-ones were synthesized for the dual purpose of inhibiting aldose reductase and exhibiting antioxidant properties. All the prepared compounds showed a significant in vitro aldose reductase inhibitory effect (10(-5) M less than or equal to IC50 less than or equal to 10(-4) M). The spatial configuration of the most active derivative 4f (4-i-PrC6H4 at C-6, IC50 = 0 95 x 10(-5) M) was compared with pharmacophore requirements of the aldose reductase inhibitor site using a molecular modeling system. The antioxidant action of 4a-f was also studied in vitro. Compound 4c (4-ClC6H4 at C-6, IC50 = 1.56 x 10(-3) M) was the most effective at scavenging the superoxide anion whereas compound 4a (C6H5 at C-6, IC50 = 1.28 x 10(-3) M) was the most active at inhibiting lipid peroxidation. In addition, biological activities (log 1/IC50) for most of the data sets could be correlated directly to lipophilic, electronic and steric parameters.
N-Acetic acid derivatives of 4-carboxy-6-arylpyridazin-3-ones were synthesized for the dual purpose of inhibiting aldose reductase and exhibiting antioxidant properties. All the prepared compounds showed a significant in vitro aldose reductase inhibitory effect (10(-5) M less than or equal to IC50 less than or equal to 10(-4) M). The spatial configuration of the most active derivative 4f (4-i-PrC6H4 at C-6, IC50 = 0 95 x 10(-5) M) was compared with pharmacophore requirements of the aldose reductase inhibitor site using a molecular modeling system. The antioxidant action of 4a-f was also studied in vitro. Compound 4c (4-ClC6H4 at C-6, IC50 = 1.56 x 10(-3) M) was the most effective at scavenging the superoxide anion whereas compound 4a (C6H5 at C-6, IC50 = 1.28 x 10(-3) M) was the most active at inhibiting lipid peroxidation. In addition, biological activities (log 1/IC50) for most of the data sets could be correlated directly to lipophilic, electronic and steric parameters.