Electrochemical Carboxylation of α,α-Difluorotoluene Derivatives and Its Application to the Synthesis of α-Fluorinated Nonsteroidal Anti-Inflammatory Drugs
Pd-Catalyzed Indole Synthesis via C–H Activation and Bisamination Sequence with Diaziridinone
作者:Jianjun Wang、Xiaofeng Sun、Daguo Hu、Yian Shi
DOI:10.1021/acs.orglett.1c02757
日期:2021.10.1
This work describes an efficient Pd-catalyzed indole synthesis. A wide variety of indoles can be obtained in good yields from readily available vinyl bromides. The reaction likely proceeds through a sequential aryl C–Hactivation and bisamination of a resulting pallada(II)cycle with diaziridinone.
这项工作描述了一种有效的 Pd 催化吲哚合成。可以从容易获得的乙烯基溴以良好的收率获得多种吲哚。该反应可能通过连续的芳基 C-H 活化和所得的钯 (II) 环与二氮丙啶酮的双胺化进行。
Starting from a previously reported ROR gamma inhibitor (1), successive efforts to improve in vivo potency were continued. Introduction of metabolically beneficial motifs in conjunction with scaffold hopping was examined, resulting in discovery of the second generation ROR gamma inhibitor composed of a 4-(isoxazol-3-yl)butanoic acid scaffold (24). Compound 24 achieved a 10-fold improvement in in vivo potency in a mouse CD3 challenge model along with significant anti-inflammatory effects in a mouse dermatitis model.