Unprotected Amino Acids as Stable Radical Precursors for Heterocycle C–H Functionalization
作者:Duy N. Mai、Ryan D. Baxter
DOI:10.1021/acs.orglett.6b01754
日期:2016.8.5
of heteroarenes using unprotected amino acids as stable alkyl radical precursors is reported. This one-pot procedure is performed open to air under aqueous conditions and is effective for several natural and unnatural amino acids. Heterocycles of varying structure are suitably functionalized, and reactivity trends reflect the nucleophiliccharacter of the radical species generated.
Polar effects in free-radical reactions. A novel homolytic acylation of heteroaromatic bases by aerobic oxidation of aldehydes, catalysed by<i>N</i>-hydroxyphthalimide and Co salts
A new process for the homolytic acylation of protonated heteroaromatic bases is described; an N-oxyl radical (PINO) generated from N-hydroxyphthalimide by air oxygen and Co(II) abstracts a hydrogen atom from an aldehyde. The resulting nucleophilicacylradical adds to a heteroaromatic base, which is then rearo-matised in a chain process. Quinazoline has an anomalous behaviour, giving 3H-quinazolin-4-one
A class of pyrazole derivatives is described for use in treating p38 kinase medicated disorders. Compounds of particular interest are defined by Formula IA
wherein R
1
, R
2
, R
3
and R
4
are as described in the specification.
Inhibitors of cysteine proteases and methods of use thereof
申请人:Pardes Biosciences, Inc.
公开号:US11524940B1
公开(公告)日:2022-12-13
The disclosure provides compounds with warheads and their use in treating medical diseases or disorders, such as viral infections. Pharmaceutical compositions and methods of making various compounds with warheads are provided. The compounds are contemplated to inhibit proteases, such as the 3C, CL- or 3CL-like protease.