Constituents of Crinoidea. 5. Isolation and structure of a new glycosyl inositolphosphoceramide-type ganglioside from the feather star Comanthina schlegeli |
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Authors: | Inagaki Masanori Shiizaki Masahide Hiwatashi Takashi Miyamoto Tomofumi Higuchi Ryuichi |
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Institution: | Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan. |
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Abstract: | A new glycosyl inositolphosphoceramide-type ganglioside, CSP2, was obtained from the polar lipid fraction of the chloroform/methanol extract of the feather star Comanthina schlegeli together with a known same type of ganglioside CJP2. The structure of this ganglioside has been determined on the basis of chemical and spectroscopic evidence to be 9-O-methyl-(N-acetyl-alpha-D-neuraminosyl)-(2-->3)-inositolphosphoceramide, which contains C(16)-sphingosine and C(22:0)-, C(24:0)-fatty acid as major component. This is the first report on the isolation and structural elucidation of a glycosyl inositolphosphoceramide-type ganglioside possessing N-acetyl-neuraminic acid (NeuAc) residue. |
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