The Chemical Structure of an Antitumor Polysaccharide in Fruit Bodies of Grifola frondosa (Maitake)
A polysaccharide was extracted from fruit bodies of Grifola frondosa (maitake), and the chemical structure and antitumor activity were studied. The extracted polysaccharide could be hydrolyzed by ?A-glucanase into glucose, indicating it to be a β-glucan. The sample gave methyl 2, 3, 4, 6- tetra-Ο-,...
Saved in:
Published in | Chemical & pharmaceutical bulletin Vol. 35; no. 3; pp. 1162 - 1168 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Japan
The Pharmaceutical Society of Japan
1987
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A polysaccharide was extracted from fruit bodies of Grifola frondosa (maitake), and the chemical structure and antitumor activity were studied. The extracted polysaccharide could be hydrolyzed by ?A-glucanase into glucose, indicating it to be a β-glucan. The sample gave methyl 2, 3, 4, 6- tetra-Ο-, methyl 2, 4, 646-Ο-, methyl 2, 3, 4-tri -Ο- and methyl 2, 4-di-Ο-methylglucoside in the molar ratio of 4 : 2 : 1 : 4 on methylation. In the carbon-13 nuclear magnetic resonance spectrum, the signals of C-6' (related to (1-6) bonding) and C-3' (related to (1-3) bonding) were observed in addition to those of free C-6 and C-3. These results indicate that the major chain is made up of β-1, 6-linked glucose residues with branches of β-1, 3-linked glucose. This glucan inhibited the growth of Sarcoma 180 tumor in ICR mice. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0009-2363 1347-5223 |
DOI: | 10.1248/cpb.35.1162 |