[EN] TECHNOLOGIES USEFUL FOR OLIGONUCLEOTIDE PREPARATION<br/>[FR] TECHNOLOGIES UTILES POUR LA PRÉPARATION D'OLIGONUCLÉOTIDES
申请人:WAVE LIFE SCIENCES LTD
公开号:WO2020191252A1
公开(公告)日:2020-09-24
Among other things, the present disclosure provides technologies for oligonucleotide preparation, particularly chirally controlled oligonucleotide preparation, which technologies provide greatly improved crude purity and yield, and significantly reduce manufacturing costs.
Diastereoselective Monofluorocyclopropanation Using Fluoromethylsulfonium Salts
作者:Renate Melngaile、Arturs Sperga、Kim K. Baldridge、Janis Veliks
DOI:10.1021/acs.orglett.9b02867
日期:2019.9.6
Diarylfluoromethylsulfoniumsalts, alternatives to freons or advanced fluorinated building blocks, are bench stable and easy-to-use sources of direct fluoromethylene (:CHF) transfer to alkenes. These salts enabled development of a trans-selective monofluorinated Johnson-Corey-Chaykovsky reaction with vinyl sulfones or vinyl sulfonamides to access synthetically challenging monofluorocyclopropane scaffolds
Compounds represented by the general formula (I); and drugs and medicinal compositions, containing the compounds: (I) wherein n is an integer of 1 to 20; Q is (II) or (III) A is cyano or the like; B is hydrogen, halogeno, or the like; X1 and X2 are each independently selected from between O and S; E is C1-4 alkyl; and R1, R2, R3 and R4 are each independently selected from between hydrogen and C1-6 alkyl.