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Complete 1H and 13C Resonance Assignments of Glycosidic Conjugates of Hyodeoxycholic Acid by Two-Dimensional NMR Techniques

✍ Scribed by Toshiaki Momose; Takashi Iida; Kumiko Mushiake; Junichi Goto; Toshio Nambara

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
617 KB
Volume
34
Category
Article
ISSN
0749-1581

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✦ Synopsis

H and 13C NMR signals were completely assigned for six 3a-and 6a-O-/?-~-glycosidic conjugates (glucosides, glucuronides and N-acetylglucosaminides) of hyodeoxycholic (3a,6a-dihydroxy-5/3-cholanoic) acid as their methyl ester-acetate derivatives (three being 3-glycosides and three corresponding 6-analogues). The signal assignments were performed using conventional 1D NMR and several homonuclear and heteronuclear shift-correlated 2D NMR techniques ('H-'H COSY, 'H-'H NOESY, 'H-'H HOHAHA, 'H-13C HETCOR, long-range 'H-I3C HETCOR). The 'H and 13C signals serving to characterize each of the bile acid glycosides were identified and used in the structural elucidation of these types of biologically important compounds.

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