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Carbohydr Polym. 2013 Feb 15;92(2):2135-40. doi: 10.1016/j.carbpol.2012.11.010. Epub 2012 Nov 29.

Structure of a novel α-glucan substitute with the rare 6-deoxy-D-altrose from Lactarius lividatus (mushroom).

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1
Department of Subtropical Bioscience and Biotechnology, University of the Ryukyus, Nishiara, Okinawa 903-0213, Japan. tako@agr.u-ryukyu.ac.jp

Abstract

A novel α-glucan substituted rare 6-deoxy-D-altropyranose was isolated from edible fruiting bodies of a mushroom (Lactarius lividatus) grown in Okinawa, Japan. The polysaccharide consists of D-glucose, D-galactose and 6-deoxy-D-altrose in a molar ratio of 3.0:1.0:1.0. The specific rotation [α](589) was estimated as +64.3° (0.2% in water) at 25 °C. Based on results of IR, NMR ((1)H, (13)C, 2D-COSY, 2D-HMQC, 2D-ROESY and 2D-HMBC), and methylation analyses, the structure of the polysaccharide was determined as [formula, see text] This work is the first demonstration of rare 6-deoxy-D-altropyranose moiety on polysaccharides.

PMID:
23399268
DOI:
10.1016/j.carbpol.2012.11.010
[Indexed for MEDLINE]
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