Aqueous Titanium Trichloride Promoted Reductive Cyclization of
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‐Nitrostyrenes to Indoles: Development and Application to the Synthesis of Rizatriptan and Aspidospermidine
TiCl3 solution at room temperature afforded indoles through a formal reductive C(sp2)–H amination process. A range of functions such as halides (Cl, Br), carbonyl (ester, carbamate), cyano, hydroxy, and amino groups were tolerated. From β,β‐disubstituted o‐nitrostyrenes, 2,3‐disubstituted indoles were formed by a domino reduction/cyclization/migration process. Mild conditions, simple experimental procedure
TRICYCLIC COMPOUND, PREPARATION METHOD THEREFOR AND USE THEREOF
申请人:Shanghai Jemincare Pharmaceuticals Co., Ltd.
公开号:EP3998263A1
公开(公告)日:2022-05-18
A compound represented by formula (I), an optical isomer thereof and a pharmaceutically acceptable salt thereof, as well as an application of said compound as an FXIa inhibitor.