-B (4a) were isolated from the Okinawanmarinespongesp. along with known compounds, furospinulosin-1 (1) and ilimaquinone (2). The structures of dictyoceratin-A (3a) and -B (4a) were determined on the basis of spectral data and their absolute configurations were deduced to be antipodal to that of ilimaquinone (2) by comparing an ozonolysia product(5) with that (6) derived from ilimaquinone (2).
New Sesquiterpene Hydroquinones from a Taiwanese Marine Sponge <i>Polyfibrospongia australis</i>
作者:Ya-Ching Shen、Pei-Wen Hsieh
DOI:10.1021/np9605302
日期:1997.2.1
Two newsesquiterpene hydroquinones, polyfibrospongols A (1) and B (2), were isolated from the Taiwanesemarinesponge Polyfibrospongia australis Lendenfeld (Spongiidae) in addition to the known metabolites, dictyoceratin A (3), ilimaquinone (4), and 5-epi-ilimaquinone (9). The structures of these compounds have been determined mainly on the basis of spectral and chemical methods. Biological testing