M. Kohri et al. / Carbohydrate Research 346 (2011) 2965–2969
2969
(m, 1H, H3), 5.04 (m, 1H, H4), 4.94 (m, 1H, H2), 4.20 (m, 1H, H6),
Supplementary data
4.06 (m, 1H, H6’), 3.65 (ddd, 1H, H1), 3.57 (m, 1H, H5), 2.91 (m,
2H, –CH2–), 2.03 (12H, 4 Â COCH3); 13C NMR (125 MHz, CDCl3): d
170.5, 170.4, 169.7, 169.5 (C@O acetate), 147.0, 144.7, 130.5 Â 2,
123.4 Â 2, (Ar), 77.6 (C1), 75.7 (C5), 74.2 (C3), 71.8 (C2), 68.5
(C4), 62.1 (C6), 37.5 (–CH2–), 20.7 20.6 (4 Â COCH3); ESI calcd for
Supplementary data (1H and 13C NMR spectra for 1 and 1c)
associated with this article can be found, in the online version, at
C
21H25O11NNa ([M+Na+]) 490.1320, found 490.1314.
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We thank Dr. Masato Noguchi and Dr. Masaki Ishihara of
Tohoku University for their discussions and valuable comments
on the manuscript.