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Abstract
A new spiro-sesquiterpene, spirofragilin (1), along with a known related sesquiterpene, dehydroherbadysidolide (2), have been isolated from the marine sponge Dysidea fragilis collected in the South China Sea. The structure of 1 was elucidated on the basis of detailed spectroscopic analysis.
Acknowledgements
This research was financially supported by “National Marine 863 Project (2001AA620 40 3 and 2003AA624030)”, “National Natural Science Foundation for Outstanding Chinese Youths” (No.30125044) and partially funded by CNR(Italy)/CAS(China) Joint Projects 2001/2004.