ES268422A1 - Procedure for the preparation of new glucosamine derivatives (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of new glucosamine derivatives (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
JR Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JR Geigy AGfiledCriticalJR Geigy AG
Publication of ES268422A1publicationCriticalpatent/ES268422A1/en
Procedure for the preparation of new glucosamine derivatives, corresponding to the general formula ** (See formula) ** in which R1 means a halogen atom, an alkyl or lower alkoxy radical, a trifluoromethyl radical or a nitro group, R2 and R3 signify, independently of one another, hydrogen, halogen atoms or lower alkyl or alkoxy groups, and X means oxygen or sulfur, characterized in that it is actuated on alpha- or beta-1,3,4,6-tetraacetyl-D-pyranoglucosamine compound of the general formula ** (See formula) ** and the reaction product, of the general formula, is transformed ** (See formula) ** by treatment with ammonia in a solvent, preferably lower alkanol, in a compound of the general formula I. (Machine-translation by Google Translate, not legally binding)
ES0268422A1961-06-211961-06-20Procedure for the preparation of new glucosamine derivatives (Machine-translation by Google Translate, not legally binding)
ExpiredES268422A1
(en)
A process for the preparation of 4,4'-bifenilil-bis-glioxal and its compounds of addition of the type dihydrate and dialcoholate (Machine-translation by Google Translate, not legally binding)