Full Title

Preparation of compounds containing saccharide radicals (ketoaldonic acids C12P7/58) > Preparation of O-glycosides, e.g. glucosides > having an oxygen of the saccharide radical directly bound to a non-saccharide heterocyclic ring or a condensed ring system containing a non-saccharide heterocyclic ring, e.g. coumermycin, novobiocin > the hetero ring having eight or more ring members and only oxygen as ring hetero atoms, e.g. erythromycin, spiramycin, nystatin