Efficient and Regioselective Synthesis of 2-Alkyl-2H-indazoles
摘要:
An efficient and regioselective synthesis of 2-methyl-2H-indazoles and 2-ethyl-2H-indazoles using trimethyloxonium tetrafluoroborate or triethyloxonium hexafluorophosphate is reported.
[EN] TRIAZOLO PYRIDINES AS MODULATORS OF GAMMA-SECRETASE<br/>[FR] TRIAZOLO PYRIDINES UTILISÉES EN TANT QUE MODULATEURS DE GAMMA-SÉCRÉTASE
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2019121596A1
公开(公告)日:2019-06-27
The present invention relates to triazolo pyridines of formula (II) and their use as modulators of -secretase. In particular, the present invention relates to compounds which interfere with -secretase and/or its substrate and therefore modulate the formation of Aβ peptides. Accordingly these compounds can be used for the treatment of Aβ-related pathologies, e.g. Alzheimer's disease.
The identification and optimization of a novelseries of centrally efficacious gamma secretase modulators (GSMs) offering an alternative to the privileged aryl imidazole motif is described. Chiral bicyclic tetrahydroindazolyl amine substituted triazolopyridines were identified as structurally distinct novelseries of GSMs. Representative compound BI-1408 ((R)-42) was demonstrated to be centrally efficacious
Selective N2-Alkylation of 1H-Indazoles and 1H-Azaindazoles
作者:Allyn T. Londregan、Jennifer Clemens、Emily L. Bell
DOI:10.1055/s-0040-1719917
日期:2022.7
A general and selective procedure for the N2-alkylation of 1H-indazoles and 1H-azaindazoles is presented. Promoted by either trifluoromethanesulfonic acid or copper(II) triflate, diverse 1H-indazoles/azaindazoles are selectively alkylated with varied primary, secondary, and tertiary alkyl 2,2,2-trichloroacetimidates at the N2-nitrogen to afford the corresponding 2-alkyl-2H-indazoles/azaindazoles. Forty-one
Triazolo pyridines as modulators of gamma-secretase
申请人:Boehringer Ingelheim International GmbH
公开号:US11339161B2
公开(公告)日:2022-05-24
The present invention relates to triazolo pyridines of formula (II) and their use as modulators of #-secretase. In particular, the present invention relates to compounds which interfere with #-secretase and/or its substrate and therefore modulate the formation of Aβ peptides. Accordingly these compounds can be used for the treatment of Aβ-related pathologies, e.g. Alzheimer's disease.