Diastereoselective Photoredox-Catalyzed [3 + 2] Cycloadditions of <i>N</i>-Sulfonyl Cyclopropylamines with Electron-Deficient Olefins
作者:Dawn H. White、Adam Noble、Kevin I. Booker-Milburn、Varinder K. Aggarwal
DOI:10.1021/acs.orglett.1c00711
日期:2021.4.16
A highly diastereoselective, visible-light-induced [3 + 2] cycloaddition between N-sulfonyl cyclopropylamines and electron-deficient olefins is reported. The reactions proceed via the oxidation of a sulfonamide aza-anion by an organic photocatalyst to generate a nitrogen-centered radical. Strain-induced ring opening and intermolecular addition to the olefin generate an intermediate carbon-centered
Disclosed are compounds, pharmaceutical compositions containing the compounds, methods for using the compounds and processes for making the compounds. More specifically, the disclosure relates to alpha-(N-benzenesulfonamido)cycloalkyl compounds that may inhibit one or both of: (i) the functioning of a γ-secretase enzyme; or (ii) the production of β-amyloid. Such compounds may be beneficial in the treatment of Alzheimer's disease and other conditions. Representative compounds have the following formula I:
wherein: A, R
1
, and R
2
are described herein.
Disclosed are compounds, pharmaceutical compositions containing the compounds, methods for using the compounds and processes for making the compounds. More specifically, the disclosure relates to alpha-(N-benzenesulfonamido)cycloalkyl compounds that may inhibit one or both of: (i) the functioning of a γ-secretase enzyme; or (ii) the production of -amyloid. Such compounds may be beneficial in the treatment of Alzheimer's disease and other conditions. Representative compounds have the following formula (I) wherein: A, R1, and R2 are described herein.