Efficient electrophilic fluorination of β-dicarbonyl compounds with the selectfluor reagent F-TEDA-BF4{1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)}
Efficient electrophilic fluorination of β-dicarbonyl compounds with the selectfluor reagent F-TEDA-BF4{1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)}
申请人:NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITY
公开号:US20160060235A1
公开(公告)日:2016-03-03
An object of the present invention is to provide a novel therapeutic agent for a patient with type 2 diabetes, a cause of which is the abnormal synthesis of insulin attributed to the abnormal modification of tRNA
Lys
(UUU) in pancreatic β cells having Cdkal1 gene mutation. The present inventors have used (1) a screening system using
E. coli
in which correct translation into luciferase requires frameshift resulting from mistranslation during protein translation, (2) a screening system using the pancreatic islet of Langerhans isolated from a pancreatic β cell-specific Cdkal1-deficient mouse, and (3) a screening system using a pancreatic β cell-specific Cdkal1-deficient mouse, and found that a compound represented by any of the following formulas (I) to (III) can serve as a therapeutic agent for a patient with type 2 diabetes with Cdkal1 gene mutation resulting in the reduced ability to secrete insulin.
Efficient electrophilic fluorination of β-dicarbonyl compounds with the selectfluor reagent F-TEDA-BF<sub>4</sub>{1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)}
作者:R. Eric Banks、Nicholas J. Lawrence、Allan L. Popplewell
DOI:10.1039/c39940000343
日期:——
1,3-Dicarbonyl compounds (acyclic and cyclic 1,3-diketones, β-ketoesters, β-ketoamides) are converted efficiently to 2-monofluoro derivatives, and thence to 2,2-difluoro derivatives, with 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate).
Microwave-assisted rapid electrophilic fluorination of 1,3-dicarbonyl derivatives with Selectfluor®
作者:Ji-Chang Xiao、Jean’ne M. Shreeve
DOI:10.1016/j.jfluchem.2004.10.043
日期:2005.4
A microwave-assisted fluorination method for 1,3-dicarbonyl compounds using Selectfluor® has been developed. 2-Monofluorinated products can be obtained in high yield in neutral reaction conditions with addition of 1 eq. of Selectfluor®. Treatment of 1,3-dicarbonyls with 3 eq. of Selectfluor® in the presence of tetrabutylammonium hydroxide (TBAH) as the base results in the formation of 2,2-difluorinated