Preussianone, a New Flavanone-Chromone Biflavonoid from <em>Garcinia preussii</em> Engl.

Abstract

A new flavanone-chromone biflavonoid, preussianone (<strong>1</strong>), has been isolated from the leaves of <em>Garcinia preussii</em>, along with four known biflavonoids. The absolute stereostructures were elucidated by chemical, spectroscopic, and chiroptical methods. The biological properties of the new biflavonoid against several bacterial strains were evaluated.

Keywords

• &lt;em&gt;Garcinia&lt;/em&gt; biflavonoids
• absolute configuration
• high-temperature NMR
• antibacterial activity