Two New Cembrane-Based Diterpenoids from the Marine Soft Coral <em>Sinularia crassa</em>

Abstract

Two new cembrane diterpenes, sicrassarines A and B (compounds <strong>1</strong> and <strong>2</strong>), were isolated from the Taiwanese soft coral <em>Sinularia crassa</em>. The structures of the new metabolites were determined on the basis of extensive spectroscopic analysis, particularly mass spectroscopy and 2D NMR (¹H–¹H COSY, HMQC, HMBC, and NOESY) spectroscopy.

Keywords

• diterpenes
• soft coral
• &lt;em&gt;Sinularia crassa&lt;/em&gt;