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Five New Diterpenoids from an Okinawan Soft Coral, Cespitularia sp.
Department of Chemistry, Biology and Marine Science, University of the Ryukyus, Nishihara-cho, Okinawa 903-2013, Japan
Biological Resources Section, Research Support Division, Okinawa Institute of Science and Technology, Okinawa 904-0495, Japan
Department of Bioresource Technology, Okinawa National College of Technology, Nago-shi, Okinawa 905-2192, Japan
* Author to whom correspondence should be addressed.
Received: 24 October 2012; in revised form: 23 November 2012 / Accepted: 26 November 2012 / Published: 30 November 2012
Abstract: Five new diterpenoids 1–5 were isolated from an Okinawan soft coral, Cespitularia sp., together with the known diterpenoid, alcyonolide (6). New diterpenoid structures were elucidated by spectroscopic methods and by comparison of their NMR data with those of related compounds. Alcyonolide (6) was cytotoxic against HCT 116 cells (IC50 5.85 μM), while these new diterpenoids 1–5 were much less active (IC50 28.2–91.4 μM).
Keywords: Cespitularia; cytotoxicity; diterpenoid; HCT 116 cells; alcyonolide
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MDPI and ACS Style
Roy, P.K.; Maarisit, W.; Roy, M.C.; Taira, J.; Ueda, K. Five New Diterpenoids from an Okinawan Soft Coral, Cespitularia sp.. Mar. Drugs 2012, 10, 2741-2748.
Roy PK, Maarisit W, Roy MC, Taira J, Ueda K. Five New Diterpenoids from an Okinawan Soft Coral, Cespitularia sp.. Marine Drugs. 2012; 10(12):2741-2748.
Roy, Prodip K.; Maarisit, Wilmar; Roy, Michael C.; Taira, Junsei; Ueda, Katsuhiro. 2012. "Five New Diterpenoids from an Okinawan Soft Coral, Cespitularia sp.." Mar. Drugs 10, no. 12: 2741-2748.