The present invention relates to compounds of formula (I)
1
wherein R
1
, R
2
, and X are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with DPP IV, such as diabetes, particularly non-insulin dependent diabetes mellitus, and impaired glucose tolerance.
Visible‐Light‐Enabled Enantioconvergent Synthesis of α‐Amino Acid Derivatives via Synergistic Brønsted Acid/Photoredox Catalysis
作者:Chao Che、Yi‐Nan Li、Xiang Cheng、Yi‐Nan Lu、Chun‐Jiang Wang
DOI:10.1002/anie.202012909
日期:2021.2.23
An unprecedented radical cross‐coupling reaction was achieved between glycine esters and racemic α‐bromoketones catalyzed by synergistic Brønsted acid/photoredox catalysis, thus serving as an efficient platform for the synthesis of highly valuable enantioenriched unnatural α‐aminoacid derivatives. This dual catalysis provides a powerful capability to control the reactive radical intermediate and iminium
The present invention relates to compounds of formula (I)
wherein R
1
, R
2
, and X are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with DPP IV, such as diabetes, particularly non-insulin dependent diabetes mellitus, and impaired glucose tolerance.