Cyclooxygenase-2 inhibitory 1,4-naphthoquinones from Impatiens balsamina L.
Significant selective cyclooxygenase-2 ( COX-2) inhibitory activities were observed for two new 1,4-naphthoquinone sodium salts, sodium 3-hydroxide-2[[sodium 3-hydroxide-1,4-dioxo(2-naphthyl)]ethyl]naphthalene-1,4-dione (impatienolate) (1) and sodium 2-hydroxide-3-(2-hydroxyethyl)naphthalene-1,4-dione (balsaminolate) (2), which were isolated from the corolla of Impatiens balsamina L. (Balsaminaceae). Their structures were elucidated by spectral techniques. Our results offer evidence supporting the use of I. balsamina L. to treat articular rheumatism, pain, and swelling.[1]References
- Cyclooxygenase-2 inhibitory 1,4-naphthoquinones from Impatiens balsamina L. Oku, H., Ishiguro, K. Biol. Pharm. Bull. (2002) [Pubmed]
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