Facile synthesis of 4-acetyl-coumarins, -thiocoumarin and -quinolin-2(1H)-one via very high α-regioselective Heck coupling on tosylates
作者:Sergio Valente、Gilbert Kirsch
DOI:10.1016/j.tetlet.2011.04.033
日期:2011.7
An efficient synthesis of a series of methyl ketones at the C4 position of coumarins, coumarin-containing heterocycles and analogous scaffolds is reported via very high α-regioselective Heck coupling using tosylates and in very high yields. Although α-regioselectivity in Heck coupling can be obtained with triflates as substrates, tosylates are less toxic, less expensive and, importantly, more stable
申请人:Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
公开号:EP3848367A1
公开(公告)日:2021-07-14
The present invention discloses a series of tricyclic compounds and use thereof in preparing a medicament for treating a disease related to CRBN protein. Specifically, the present invention discloses a derivative compound of formula (1) or a pharmaceutically acceptable salt thereof.