Two novel glucosylceramides from gonads and body walls of the patagonian starfish <i>Allostichaster inaequalis</i>
M. Enriqueta Díaz de VivarFacultad de Ciencias Naturales (Sede Puerto Madryn) Universidad Nacional de la Patagonia “San Juan Bosco” Chubut 9120 ArgentinaAlicia M. SeldesDepartamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Pabellón 2, Ciudad Universitaria Buenos Aires 1428 ArgentinaMarta S. MaierDepartamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Pabellón 2, Ciudad Universitaria Buenos Aires 1428 Argentina
2002en
ABI
Аннотация
From the water-insoluble lipid fraction of the chloroform/methanol/water extract of the gonads and body walls of the Patagonian starfish Allostichaster inaequalis, two new glucosylceramides (4 and 7) were isolated together with the known phalluside-1 (1) and two glucosylceramides (2 and 3) previously isolated from the starfish Cosmasterias lurida. The new compounds were characterized as (2S,3R,4E,8E,10E)-1-(beta-D-glucopyranosyloxy)-3-hydroxy-2-[(R)-2-hydroxy-15-tetracosenoyl] amino-4,8,10-octadecatriene (4) and (2S,3R,4E,15Z)-1-(beta-D-glucopyranosyloxy)-3-hydroxy-2-[(R)-2-hydroxyhexadecanoyl] amino-4,15-docosadiene (7) by means of spectroscopic and chemical methods.
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