SYNTHETIC INTERMEDIATE OF 1-(2-DEOXY-2-FLUORO-4-THIO-SS-D-ARABINOFURANOSYL)CYTOSINE
申请人:Fujifilm Corporation
公开号:EP3184112A1
公开(公告)日:2017-06-28
Synthetic intermediate of 1-(2-deoxy-2-fluoro-4-thio-β-D-arabinofuranosyl)cytosine
A compound represented by the formula [1F]:
wherein R1 represents a hydrogen atom or a hydroxyl protecting group; R2 represents a hydrogen atom or a hydroxyl-protecting group; R3C represents a hydrogen atom, a halogen atom, an optionally substituted alkyl group or -OR3a corresponding to a hydroxyl-protecting group; R3D represents a hydrogen atom, a halogen atom, an optionally substituted alkyl group or -OR3a corresponding to a hydroxyl-protecting group; R4 represents a halogen atom, a hydroxyl group, an optionally substituted alkylsulfonyloxy group or an optionally substituted arylsulfonyloxy group; R5 and R6 together represent =O or =NOR7 wherein R7 represents a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group, an optionally substituted heterocyclic group or an optionally substituted silyl group; or R4 and R5 together represent a sulfur atom; and R6 represents a hydroxyl group. The compound is useful as an intermediate for producing a thionucleoside.
[EN] LASER ENGRAVING LIQUID CRYSTAL MOLECULAR COMPOSITION AND PREPARATION METHOD THEREFOR<br/>[FR] COMPOSITION MOLÉCULAIRE DE CRISTAUX LIQUIDES POUR GRAVURE LASER ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ<br/>[ZH] 激光雕刻液晶分子组合物及其制备方法
METHODS FOR PRODUCING CROSSLINKABLE SILYL GROUP-CONTAINING POLYOXYALKYLENE POLYMERS
申请人:Zhang Ling
公开号:US20130060000A1
公开(公告)日:2013-03-07
Embodiments of the invention provide for a method of producing a silylated polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule. The method comprises providing a polyoxyalkylene polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, wherein the polyoxyalkylene polymer includes an impurity double metal cyanide complex mixed therein, and wherein the polyoxyalkylene polymer has not been treated with a metal-coordinating compound; and adding to the polyoxyalkylene polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction, wherein the hydrosilyation reaction is performed in an absence of a metal-coordinating compound.