All
the 'H and 13C NMR signals were assigned by the
concerted use of the 1HJH COSY, HOHAHA and
HMQC spectra, suggesting that 2 contained a terminal
xylopyranosyl unit, a terminal rhamnopyranosyl
unit and a disubstituted xylopyranosyl unit.
In the HMBC spectrum, the anomeric proton signals
at 6 6.36 (rhamnose), 4.86 (terminal xylose) and 4.69
(substituted xylose) exhibited correlations with the
carbon signals at 6 75.9 (C-2 of substituted xylose),
88.8 (C-3 of substituted xylose) and 80.9 (C-1 of agly
Allthe 'H and 13C NMR signals were assigned by theconcerted use of the 1HJH COSY, HOHAHA andHMQC spectra, suggesting that 2 contained a terminalxylopyranosyl unit, a terminal rhamnopyranosylunit and a disubstituted xylopyranosyl unit.In the HMBC spectrum, the anomeric proton signalsat 6 6.36 (rhamnose), 4.86 (terminal xylose) and 4.69(substituted xylose) exhibited correlations with thecarbon signals at 6 75.9 (C-2 of substituted xylose),88.8 (C-3 of substituted xylose) and 80.9 (C-1 of agly
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