“…Glucosylceramide 1 was identified as phalluside-1, previously isolated from the ascidian Phallusia fumigata (14), whereas 2 and 3 are also known compounds previously isolated from C. lurida (20). Fraction 5 (Scheme 3) is a mixture of glucosylceramide 5a, previously isolated from Ophidiaster ophidiamus (ophidiacerebroside C) (8) and C. lurida (19) and the new 5b {(2S,3R,4E,8E,10E)-1-(β-D-glucopyranosyloxy)-3-hydroxy-2-[(R)-2-hydroxy-15-tetracosenoyl]amino-9-methyl-4,8,10-octadecatriene}. Fraction 6 (Scheme 3) is a mixture of the known glucosylceramides ophidiacerebroside C (5a) and 6a, previously isolated from O. ophidiamus (8), and the new glucosylceramides 5b and 6b (2S,3R,4E,8E,10E)-1-(β-D-glucopyranosyloxy)-3-hydroxy-2-[(R)-2-hydroxypentacosanoyl]amino-9-methyl-4,8,10-octadecatriene.…”