Molecular structure of fagopyritol Al (O-alpha-D-galactopyranosyl-(1 -> 3)-D-chiro-inositol) by NMR

Authors
Obendorf, RL Steadman, KJ Fuller, DJ Horbowicz, M Lewis, BA
Citation
Rl. Obendorf et al., Molecular structure of fagopyritol Al (O-alpha-D-galactopyranosyl-(1 -> 3)-D-chiro-inositol) by NMR, CARBOHY RES, 328(4), 2000, pp. 623-627
Citations number
12
Categorie Soggetti
Agricultural Chemistry","Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
CARBOHYDRATE RESEARCH
ISSN journal
00086215 → ACNP
Volume
328
Issue
4
Year of publication
2000
Pages
623 - 627
Database
ISI
SICI code
0008-6215(20001006)328:4<623:MSOFA(>2.0.ZU;2-K
Abstract
The molecular structure of fagopyritol A1, a novel galactopyranosyl cyclito l from buckwheat seeds, was determined to be O-alpha-D-galactopyranosyl-(1- ->2)-D-chiro-inositol by H-1 and C-13 NMR. Fagopyritol Al is a positional i somer of fagopyritol B1 (O-alpha-D-galactopyranosyl-(1-->2)-D-chiro-inosito l), representing a different series of fagopyritol oligomers. Trimethylsily l derivatives of both compounds have similar mass spectra, but each may be identified by different abundance ratios of fragments with m/z 305/318 and 318/319. (C) 2000 Elsevier Science Ltd. All rights reserved.