Terpenoids from the octocorals Menella sp. (plexauridae) and Lobophytum crassum (alcyonacea)

Abstract

A new germacrane-type sesquiterpenoid, menelloide E (1), and a new cembrane-type diterpenoid, lobocrassin F (2), were isolated from the octocorals Menella sp. and Lobophytum crassum, respectively. The structures of terpenoids 1 and 2 were determined by spectroscopic and chemical methods and compound 2 was found to display a significant inhibitory effect on the release of elastase by human neutrophils. © 2012 by the authors; licensee MDPI.