Abstract：
:Two new steroids, crellasterones A (1) and B (2), together with the previously reported compound chalinasterol (3) and several nucleosides (4-7), were isolated from the sponge Crella incrustans, collected in New Caledonia. The structures of the new compounds were established by extensive NMR and mass spectroscopic analysis and revealed unprecedented marine natural products with a ring-contracted A-norsterone nucleus and 2-hydroxycyclopentenone chromophore. The absolute configurations were derived from electronic circular dichroism (ECD) measurements in conjunction with high-level density functional theory (DFT) calculations.
journal_name
Mar Drugsjournal_title
Marine drugsauthors
Ragini K,Piggott AM,Karuso Pdoi
10.3390/md15060177subject
Has Abstractpub_date
2017-06-15 00:00:00issue
6issn
1660-3397pii
md15060177journal_volume
15pub_type
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