The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1992
Filed:
Jul. 31, 1990
Jacques Defaye, Saint Dismier, FR;
Andree Gadelle, Saint Dismier, FR;
Christian Pedersen, Virum, DK;
Beghin-Say, SA, Thumeries, FR;
Abstract
A process for preparing alkykl-1-thio-.alpha.,.beta.-glycosides and alkyl glycosides is described. The glycosides are prepared from a saccharide selected from monosaccharides and reducible di- and oligo-saccharides. The saccharide is reacted with either a thiol to produce an alkyl-1-thio-.alpha.,.beta.-glycoside or an alcohol to produce an alkyl glycoside in the presence of the solvent and reagent poly-(hydrogen fluoride)-pyridinium. Novel alkyl-1-thio-.alpha.,.beta.-glycosides prepared by the process of the invention are characterized in that they are in the form of a mixture of .alpha. and .beta. anomers. The alkyl-1-thio-.alpha.,.beta.-glycosides having a long alkyl chain are useful as nonionic detergents, in particular in the extraction of membrane proteins.