Aryl Radical Cyclizations of 1-(2‘-Bromobenzyl)isoquinolines with AIBN−Bu<sub>3</sub>SnH: Formation of Aporphines and Indolo[2,1-<i>a</i>]isoquinolines
text] Radical cyclization of alkoxy-substituted 1-(2'-bromobenzyl)-3,4-dihydroisoquinolines 1 with AIBN-Bu3SnH gave 6a,7-dehydroaporphines 2 preferentially. A steric repulsion between the respective alkoxy groups at the 7- and 3'-positions gave 5,6-dihydroindolo[2,1-a]isoquinolines 3 in a "disfavored" 5-endo cyclization mode. Radical cyclizations of the related substrates, such as 1-(2'-bromobenzoyl)isoquinolines
DERIVATIVES OF PAPAVERINE THAT ARE EFFECTIVE HYPOXIC TUMOR RADIOSENSITIZERS
申请人:Ohio State Innovation Foundation
公开号:US20210163453A1
公开(公告)日:2021-06-03
Disclosed herein are compounds, compositions, and methods for inhibiting mitochondrial oxygen consumption in a cancerous tissue. The compounds, compositions, and methods can be used to treat a subject with hypoxic cancerous tissue.
Photochemical C−H Hydroxyalkylation of Quinolines and Isoquinolines
We report herein a visible light-mediated C-H hydroxyalkylation of quinolines and isoquinolines that proceeds via a radical path. The process exploits the excited-state reactivity of 4-acyl-1,4-dihydropyridines, which can readily generate acyl radicals upon blue light absorption. By avoiding the need for external oxidants, this radical-generating strategy enables a departure from the classical, oxidative