They are comprised of a series of derivatives of carbohydrates of a family of biologically active opiated agents, which present in their structure at least one residue of carbohydrate per opiate molecule, linked directly to a hydroxyl group of the opiate or through a C-glycoside bond formed between two functions situated at each of the two constitutive parts of the glycoconjugate. Said derivatives contain more than one carbohydrate residue and/or more than one opiate molecule per carbohydrate residue. The acid salts and the compounds of said opiated glycoconjugates are also included in the disclosed compounds of said invention.
Novel d-glucans obtained by dimethyl sulfoxide extraction of the lichens Letharia vulpina, Actinogyra muehlenbergii, and an Usnea SP
作者:Marcello Iacomini、Philip A.J. Gorin、Madalena Baron、Alexander P. Tulloch、Mytosk Mazurek
DOI:10.1016/0008-6215(88)84063-1
日期:1988.5
Abstract Extraction of certain lichens with cold dimethylsulfoxide provided a β- d -glucan virtually free of contaminating α- d -glucan and galactomannan. Applied to Lethariavulpina , the method gave β- d -glucan, and extraction of the residue with hot water followed by cooling gave α- d -glucan. From Usneasp. a β- d -glucan was isolated, but little α- d -glucan was present. Extraction of Actinogyra
have studied the acyl migration in different monosaccharides using five different acylgroups by a combination of experimental, kinetic and theoretical tools. The results show that the anomeric configuration in the monosaccharide has a major influence on the migration rate, together with the relative configurations of the other hydroxylgroups and the nature of the migrating acylgroup. Full mechanistic
Neue Proteinkonjugate und Verfahren zu deren Herstellung
申请人:Aventis Research & Technologies GmbH & Co. KG
公开号:EP1104677A2
公开(公告)日:2001-06-06
Die Erfindung betrifft neue Proteinkonjugate der Formeln (la-c). Die Erfindung betrifft ferner ein Verfahren zur Herstellung der Proteinkonjugate durch Umsetzung von Proteinen mit drei niedermolekularen Komponenten in einem einzigen Reaktionsschritt, wobei simultan bis zu vier Reportergruppen oder Liganden in definierter Stöchimetrie und molekularem Abstand eingeführt werden, sowie Anwendungen der neuen Proteinkonjugate.