In vitro: |
Heterocycles.2001 May; 55(5). | Inhibitors of Nitric Oxide Production and New Sesquiterpenes, 4-epi-Curcumenol, Neocurcumenol, Gajutsulactones A and B, and Zedoarolides A and B from Zedoariae Rhizoma.[Reference: WebLink] | METHODS AND RESULTS: Six new guaiane- or secoguaiane-type sesquiterpenes, 4-Epi-curcumenol, neocurcumenol, gajutsulactones A and B, and zedoarolides A and B, were isolated from aqueous acetone extract of Zedoariae Rhizoma (Zingiberaceae), together with 34 sesquiterpenes and two diarylheptanoids. The stereostructures of new sesquiterpenes were elucidated on the basis of chemical and physicochemical evidence, which included nuclear Overhauser effect (NOE) and circular dichroic (CD) spectroscopic analyses.
CONCLUSIONS:
Gajutsulactones A and B, and 14 sesquiterpenes, and two diarylheptanoids were found to inhibit nitric oxide (NO) production in lipopolysaccharide (LPS)-activated mouse peritoneal macrophages. |
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