Enantiomeric Discorhabdin Alkaloids and Establishment of Their Absolute Configurations Using Theoretical Calculations of Electronic Circular Dichroism Spectra
作者:Tanja Grkovic、Yuanqing Ding、Xing-Cong Li、Victoria L. Webb、Daneel Ferreira、Brent R. Copp
DOI:10.1021/jo801622n
日期:2008.11.21
pyrroloiminoquinone marine alkaloids discorhabdins B (2), G*/I (3), L (4), and W (5) have been isolated from Latrunculia species sponges collected at different locations around the coast of New Zealand. The absolute configuration of all compounds was secured by comparison of observed data with the results of time-dependent density functional theory (TDDFT) calculations of electronic circulardichroism (ECD) spectra
A novel alkaloid, prianosin A (1), with potent antineoplastic activity has been isolated from the Okinawanmarinesponge Prianos melanos. Its absolute stereostructure was determined by single crystal x-ray diffraction analysis.