Jaspis stellifera

Kobayashi, J. Yuasa, K. Kobayashi, T. Tsuda, M. Sasaki, T. (1996A) Jaspifo ls A-G, new cytotoxic isomalabaricane-type nortriterpenoids from Okinawan marine sponge Jaspis stellifera. Tetrahedron, 52, 5745-50. 

Constit. of a crinoid (Comutala sp.), the sponges Jaspis stellifera, Phaeodactylum tricornutum and Chlorella ellipsoides. Cryst. (MeOH or Me2CO). Mp 147-148 . 

Seven new triterpenes belonging to the rare malabaricane class from the sponge Jaspis stellifera were identified by Ravi et al. (139) by a combination of spectral evidence and chemical degradation as (13Z, 15 , 17E,22E,24Z)-3, 2-dioxomalabarica-l 3,15,17,22,24-pentaen-26-oic acid (215), (13Z,15E,17E,22Z,24Z)-3,12-dioxomalabarica-... 

Ravi, B.N., R.J. Wells, and K.D. Croft Malabaricane Triterpenes from a Fijian Collection of the Sponge Jaspis stellifera. J. Org. Chem. 46, 1998 (1981). 

Many chemical data relate to the species Jaspis stellifera which is now regarded as the species Rhabdastrella globostellata (see Systema Porifera, Hooper and Van Soest, 2002a). 

Ravi, B.N. and Wells, R.J. (1982) Malabaricane triterpenes from a Great Barrier reef collection of the sponge Jaspis stellifera. Aust. J. Chem., 35, 39-50. 

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