| shagenes a and b, new tricyclic sesquiterpenes produced by an undescribed antarctic octocoral. | the isolation and characterization of two new tricyclic sesquiterpenoids, shagenes a (1) and b (2) are presented. these compounds were isolated from an undescribed soft coral collected from the scotia arc in the southern ocean. one- and two-dimensional nmr spectroscopy and mass spectrometry provided the data necessary to characterize the compounds and their relative stereochemical configurations. exploration of the bioactivity of shagenes a and b found 1 active against the visceral leishmaniasis ... | 2014 | 24779517 |