Diarylheptanoids from Curcuma kwangsiensis and their inhibitory activity on nitric oxide production in lipopolysaccharide-activated macrophages

Eleven diarylheptanoids (1-11) were isolated from the rhizomes of Curcuma kwangsiensis, together with seven known compounds. All isolated compounds were evaluated for inhibitory activities against LPS-induced NO production in RAW 264.7 macrophages.