Bioassay-guided isolation of aldose reductase inhibitors from Artemisia dracunculus

Four aldose reductase inhibitors were isolated from the ethanolic extract of the shoots of Artemisia dracunculus. These compounds were identified as 4,5-di-O-caffeoylquinic acid, davidigenin, 6-demethoxycapillarisin and 2′,4′-dihydroxy-4-methoxydihydrochalcone.