The regioselective iodination of quinolines, quinolones, pyridones, pyridines and uracil
作者:Uttam Dutta、Arghya Deb、David W. Lupton、Debabrata Maiti
DOI:10.1039/c5cc07799k
日期:——
A radical based direct C-H iodination protocol for quinolines, quinolones, pyridones, pyridines, and uracil has been developed. The iodination occurs in a C3 selective manner for quinolines and quinolones. Pyridones...
Compounds for inhibition of alpha 4 beta 7 integrin
申请人:Gilead Sciences, Inc.
公开号:US11224600B2
公开(公告)日:2022-01-18
The present disclosure provides a compound of Formula (I):
or a pharmaceutically acceptable salt thereof as described herein. The present disclosure also provides pharmaceutical compositions comprising a compound of Formula (I), processes for preparing compounds of Formula (I), and therapeutic methods for treating inflammatory disease.
A general protocol for functionalization of glycosyl thiols has been reported. This protocol is based on a single-electron Ni/photoredox dual-catalyzed cross coupling between 1-thiosugars and a broad range of aryl bromides and iodides as well as alkenyl and alkynyl halides. This base-free method gives access to a series of functionalized thioglycosides in moderate to excellent yields with a perfect control of the anomeric configuration. Moreover, it has been shown that this methodology may be transposed successfully to the continuous-flow photoredox chemistry.
Meng, Ji-Ben; Shen, Mei-Qen; Wang, Xiao-Hong, Journal of Heterocyclic Chemistry, 1991, vol. 28, # 6, p. 1481 - 1484