| 摘要 |
NEW MATERIAL:A compound of the formula [R<1> is beta-D-glucopyranosyl(1 6)-beta- D-glucopyranosyl, alpha-L-arabinopyranosyl(1 6)-beta,D-glucopyranosyl, alpha-L-arabinofuranosyl(1 6)-beta-D-glucopyranosyl or beta-D-glucopyranosyl]. EXAMPLE:3-O-[6-O-Malonyl-beta-D-glucopyranosyl ( 1 2 ) -beta-D-glucopyranosyl]-20-O- [beta-D-glucopyranosyl(1 6)-beta-D-glucopyranosyl]20-S-protopanaxadiol. USE:Effective for cell activators. PREPARATION:For example, the root part, etc. of a ginseng is directly extracted with water, a lower alcohol or hydrous lower alcohol or defatted and then extracted therewith, and the resultant extract is distributed and extracted with water and an aliphatic ether and/or aliphatic medium alcohol. The resultant portion transferred to the water is separated and purified. |
