Réaction #709247

ord-79b1917a9c6a4120a5e74642eee839ec

Équation de réaction

OCC(O)CO
glycerol
OC[C@@H](O)[C@@H](O)CO
erythritol
→
O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO
D-glucose

Réactifs

—
polyol
OCC(O)CO
glycerol
OC[C@@H](O)[C@@H](O)CO
erythritol

Réactifs

Aucun

Solvants

O=S(=O)(O)O
sulfuric acid

Conditions de réaction

Conditions détaillées
See reaction.notes.procedure_details.

Traitement

  1. 1
    Autreto obtain
  2. 2
    AutreHydrolysis of the insoluble substance

Mode opératoire

Separately, the polyol-type ganoderan was kept at 90°-100° C. for 1-2 hours in 0.05-0.1M sulfuric acid to obtain, as well as glycerol and erythritol, an insoluble substance. Hydrolysis of the insoluble substance gave D-glucose as sole product, while hydrolysis of a methylated polyol-type ganoderan gave a substantial amount of 2,4,6-tri-O-methyl-D-glucose. By exposure to the action of exo-beta-1,3 glucanase, only D-glucose was obtained. These facts confirm that the backbone of ganoderan consists of beta-1,3-linked D-glucopyranose residues.

Source

DOI: 10.6084/m9.figshare.5104873.v1Brevet: US04769363uspto-grants-1988_09