Efficient and stereoselective process for large scale synthesis of (3R)-3-(2,3-dihydrobenzofuran-5-yl)-1,2,3,4-tetrahydropyrrolo[3,4-b]quinolin-9-one derivatives
申请人:Li Xun
公开号:US20070015798A1
公开(公告)日:2007-01-18
This invention relates to an efficient process for large scale stereoselective production of (3R)-3-(2,3-dihydrobenzofuran-5-yl)-1,2,3,4-tetrahydropyrrolo[3,4-b]quinolin-9-ones and key intermediates used for the preparation of benzofuranyl pyrroloquinolones as potent and selective PDE5 inhibitors for the treatment of erectile dysfunction, as well as pharmaceutical compositions and methods of treatment utilizing these compounds.
Copper‐Catalyzed Tunable Oxygenative Rearrangement of Tetrahydrocarbazoles
作者:Hai Ren、Bing‐Qing Yang、Jun Shi、Wei Wu、Biaobiao Jiang、Qin Chi
DOI:10.1002/chem.202401293
日期:2024.8.6
A copper-catalyzed tunable oxygenative rearrangement reaction of tetrahydrocarbazoles by using H2O and O2 as oxygen source has been developed. Accordingly, highly important yet synthetically difficult cyclopentyl-bearing spiroindolin-2-one and spiroindolin-3-one products were obtained with excellent chemoselectivity and regioselectivity. Inspired from the unique pathway of 1, 2-migration rearrangement