A new pregnane analogue from Hainan soft coral Scleronephthya gracillimum Kukenthal

摘要

The soft coral Scleronephthya gracillimum (Ku¨ kenthal, 1906) was collected from Linchang Reef in the South China Sea in April 2006 and identified by Prof. Ren-Lin Zou, South China Sea Institute of Oceanology, Chinese Academy of Sciences. A voucher specimenwas deposited at the Key Laboratory of Marine Drugs, Ministry of Education, the School of Medicine and Pharmacy, Ocean University of China with the access code of HN-LCJ-20060008. To the best of our knowledge, there have been no reports on chemical constituents of S. gracillimum. The previous studies on the chemistry of Scleronephthya include the isolation of two pregnanes from Scleronephthya pallida (Kittakoop et al., 1999), and five other pregnanes together with two norpregnane glycosides from Scleronephthya sp. (Yan et al., 2004).