Convenient and Efficient Synthesis of 1-Oxo-1,2,3,4-tetrahydrocarbazoles via Fischer Indole Synthesis
作者:Rong Sheng、Li Shen、You-Qin Chen、Yong-Zhou Hu
DOI:10.1080/00397910802499567
日期:2009.2.25
Abstract A convenient synthesis of 1-oxo-1,2,3,4-tetra-hydrocarbazoles has been developed by reaction of 2-aminocyclohexanone hydrochlorides with various phenylhydrazine hydrochlorides viaFischerindolesynthesis under mild conditions. The method is more satisfactory in terms of the easy availability of starting materials and the simple one-pot operation.
An initial structure-activity relationship study of the novel necroptosis inhibitor Nec-21 was described. Any changes of the tetracyclic scaffold were detrimental for the activity. Introduction of a substituent to 7 or 8 position (e.g., cyano or methoxy group, respectively), would increase the activity. The 7 and 8-position disubstituted compound 17b was 35-fold as potent as the lead, while EC50 reached 14 nM. (C) 2013 Elsevier Ltd. All rights reserved.