Forming Spirocyclohexadienone-Oxocarbenium Cation Species in the Biomimetic Synthesis of Amomols
作者:Mariam Traoré、Marjorie Maynadier、Florence Souard、Luc Choisnard、Henri Vial、Yung-Sing Wong
DOI:10.1021/jo102414s
日期:2011.3.4
The oxidation of appropriate 2-(4-hydroxyphenyl)ethyl ketones gives direct access to amomols by means of the formation of a transient spirocyclohexadienone-oxocarbenium ion that is intermolecularly intercepted by an alcohol. Furthermore, homochiral amomols and other new analogues were synthesized for the first time and were biologically evaluated on Plasmodium falciparum.
PIDA-Promoted/HFIP-Controlled Dearomative Spirocyclization of Phenolic Ketones via a Spirocyclohexadienone-Oxocarbenium Cation Species
作者:Shiyong Peng、Jieyin He、Liangliang Yang、Hong Zhang、Hongguang Li、Ming Lang、Chao Chen、Jian Wang
DOI:10.1021/acs.joc.2c00482
日期:2022.5.6
conditions. Control experiments unravel that the reaction proceeds through a spirocyclohexadienone-oxocarbenium cation species. In addition, an in situ-generated hypervalent iodine(III)-catalyzed version, as well as the late-stage transformation of products via conjugateadditions, was also realized.