Two novel glucosylceramides from gonads and body walls of the Patagonian starfish Allostichaster inaequalis.
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.
Díaz de Vivar
María E
ME
Facultad de Ciencias Naturales (Sede Puerto Madryn), Universidad Nacional de la Patagonia San Juan Bosco, Chubut, Argentina.
Seldes
Alicia M
AM
Maier
Marta S
MS
D000818:Animals; D002851:Chromatography, High Pressure Liquid; D005963:Glucosylceramides / Q000737:chemistry / Q000302:isolation & purification*; D006066:Gonads / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet; D013215:Starfish
D005963:Glucosylceramides