An objective of the present invention is to provide low-molecular-weight compounds that can inhibit Src family kinases. The present invention relates to compounds represented by general formula (I) or pharmacologically acceptable salts thereof. In the formula, Ar1 is optionally substituted C6-10 arylene or 5- to 10-membered heteroarylene, and Ar2 is optionally substituted C6-10 aryl or 5- to 10-membered heteroaryl. R1 and R2 are defined as described in the specification.
Three new bromoindoles, 6-bromo-5-hydroxyindole (1), 6-bromo-4,5-dihydroxyindole (2), and 6-bromo-4,7-dihydroxyindole (3), were isolated from the midintestinal gland of the muricid gastropod Drupella fragum. The structures of 2 and 3 were elucidated mainly by NMR spectroscopic analyses of their acetyl derivatives, whereas the structure of 1 was established by spectroscopic methods and total synthesis. Antioxidative activity for compounds 1-3 was evaluated by the POV method, and compound 1 was found to have as strong an antioxidative potency as BHT.
1H-INDOLE-3-CARBOXYLIC ACID DERIVATIVES AND THEIR USE AS PPAR AGONISTS