3-Halogenoalkoxytributyltin compounds prepared from 1,3-halogenohydrins and tributyltin ethoxyde decompose at 200° leading to the corresponding oxetanes. This reaction is a very convenient method of preparation of this kind of heterocycles.
[EN] DEUTERATED NUCLEOSIDE/TIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE NUCLÉOSIDES/NUCLÉOTIDES DEUTÉRÉS
申请人:ENANTA PHARM INC
公开号:WO2016073756A1
公开(公告)日:2016-05-12
The present invention provides nucleoside phosphoramidate compounds of Formula (I), where R1, R2a, R2b, R4, R5a, R5b, Rb5, Rb6 and D are as defined herein. The invention further includes pharmaceutical compositions comprising a compound of Formula (I), methods of use of these compounds for treating a viral infection, and methods of producing these compounds.
A responsive microgel is provided which responds volumetrically and reversibly to a change in one or more aqueous conditions selected from the group consisting of (temperature, pH, and ionic conditions) comprised of an ionizable network of covalently cross-linked homopolymeric ionizable monomers wherein the ionizable network is covalently attached to an amphiphilic copolymer to form a plurality of ‘dangling chains’ and wherein the ‘dangling chains’ of amphiphilic copolymer form immobile micelle-like aggregates in aqueous solution. A responsive microgel is further provided that comprises at least one therapeutic entity and delivers a substantially linear and sustained release of the therapeutic entity under physiological conditions.