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Biologically Active Glycosides from Asteroidea, 36. Re-examination of the Structure of Acanthaganglioside C, and the Identification of Three Minor Acanthagangliosides F, G and H

✍ Scribed by Miyamoto, Tomofumi ;Inagaki, Masanori ;Isobe, Ryuichi ;Tanaka, Yoshitsugu ;Higuchi, Ryuichi ;Iha, Masahiko ;Teruya, Kiichi

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
521 KB
Volume
1997
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

The structure of acanthaganglioside C (1) has been re‐examined using MQ‐COSY, TOCSY, NOESY, HSQC, HMBC and HSQC‐TOCSY experiments. As a result, it is clarified that N‐acetyl neuraminic acid (NeuAc) is linked to the C‐3 position, and not the C‐4 position, of the β‐galactopyranose. In addition, three minor acanthagangliosides, F (2), G (3) and H (4), have also been isolated from the ganglioside molecular species AG‐2. Their structures have been determined on the basis of chemical and spectroscopic evidence.

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