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1	Author	Ivayh Elenkov3, Simeon Popov3, StoitzeA. Ndreevb	Requires cookie*
	Title	Sterol Composition of the Black Sea Sponges Hymeniacidon sanguinea (Grant) and Halichondria panicea (Pallas)
	Abstract	The sterol composition of H ym eniacidon sanguinea and H alichondria panicea from the Black Sea was investigated. Both sponges contain similar mixtures o f stan d s and o f dietary A5-sterols. Main sterols appeared to be C27-sterols, which could be connected with a common diet for the both sponges. Saturated short side chain sterols have been found in H ym eniaci don sanguinea. Three of them were novel for sponges. A possibility for the transformation of som e dietary sterols into stands is discussed.
	Reference	Z. Naturforsch. 54c, 972—9 (1999); received March 22/June 15 1999
	Published	1999
	Keywords	Chemotaxonomy, Halichondria panicea, H ym eniacidon sanguinea, Sponges, Sterols
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	TEI-XML for	default:Reihe_C/54/ZNC-1999-54c-0972.pdf
	Identifier	ZNC-1999-54c-0972
	Volume	54

2	Author	Thomas Fendert3, VictorW. Rayb, RobW M Van Soestc, Peter Proksch3	Requires cookie*
	Title	Bromoisoxazoline Alkaloids from the Caribbean Sponge Aplysina insularis
	Abstract	An investigation of a specimen of the Caribbean sponge A plysina insularis resulted in the isolation of fourteen bromoisoxazoline alkaloids (1 -1 4), of which 14-oxo-aerophobin-2 (1)* is a novel derivative. Structure elucidation of the compounds have been established from spectral studies and data for 1 are reported. Constituents 2 to 6 and 11 to 14 have not been identified sofar in A plysina insularis species. The presence of the known compounds 7 to 9 in A plysina insularis indicates that their use for chem otaxonom ical purposes is questionable.
	Reference	Z. Naturforsch. 54c, 246 (1999); received D ecem ber 23 1998/January 22 1999
	Published	1999
	Keywords	Sponges, A plysina insularis, Bromoisoxazoline Alkaloids, Chemotaxonomy, Structure Elucidation
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	TEI-XML for	default:Reihe_C/54/ZNC-1999-54c-0246.pdf
	Identifier	ZNC-1999-54c-0246
	Volume	54