Ianthella basta

Bastaxanthins B, C, D, E, and F (630-634) are novel carotenoid sulfates from the marine sponge Ianthella basta from the Great Barrier Reef, Australia [499]. The stereostructure of bastaxanthin C (631) was determined on the basis of infrared (IR), H and 13C NMR, and CD spectra, and by chemical transformations [500]. Bastaxanthins were also isolated from /. flabelliformis from the Great Barrier Reef including bastaxanthin C (631) (major), B (630), D (632), and F (634) and bastaxanthin G (635) [501]. Bastaxanthin G (635) was not fully characterised but was the most polar of the carotenoids isolated and was tentatively described as a disulfate [501]. 

Fig. 3.30 Ianthella basta, a sponge rich in the bastadins 2053-2061 (Photo F. J. Schmitz)...

A Guam specimen of Ianthella basta has afforded the novel 34-O-sulfatobasta-din-9 (2127) (1855), and the sponge Dendrilla cactos from India has yielded bastadins-22 (2128) and -23 (2129) (1899). 

Pettit GR, Butler MS, Bass CG, DoubekDL, Williams MD, Schmidt JM, Pettit RK, Hooper JNA, Tackett LP, Filiatrault MJ (1995) Antineoplastic Agents, 326. The Stereochemistry of Bastadins 8, 10, and 12 from the Bismark Archipelago Marine Sponge Ianthella basta. J Nat Prod 58 680... 

Franklin MA, Penn SG, Lebrilla CB, Lam TH, Pessah IN, Molinski TF (1996) Bastadin 20 and Bastadin O-Sulfate Esters from Ianthella basta Novel Modulators of the RyiR FKBP12 Receptor Complex. J Nat Prod 59 1121... 

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