Strategies towards potent trypanocidal drugs: Application of Rh-catalyzed [2 + 2 + 2] cycloadditions, sulfonyl phthalide annulation and nitroalkene reactions for the synthesis of substituted quinones and their evaluation against Trypanosoma cruzi
作者:James M. Wood、Nishikant S. Satam、Renata G. Almeida、Vinicius S. Cristani、Dênis P. de Lima、Luiza Dantas-Pereira、Kelly Salomão、Rubem F.S. Menna-Barreto、Irishi N.N. Namboothiri、John F. Bower、Eufrânio N. da Silva Júnior
DOI:10.1016/j.bmc.2020.115565
日期:2020.8
Rhodium-catalyzed [2 + 2 + 2] cycloadditions, sulfonyl phthalideannulations and nitroalkene reactions have been employed for the synthesis of 56 quinone-based compounds. These were evaluated against Trypanosoma cruzi, the parasite that causes Chagas disease. The reactions described here are part of a program that aims to utilize modern, versatile and efficient synthetic methods for the one or two
Photoinduced EDA Complexes Enabled Radical Tandem Cyclization/Arylation of Unactivated Alkene with 2-Amino-1,4-naphthoquinones
作者:Bin Sun、Xiayue Shi、Xiaohui Zhuang、Panyi Huang、Rongcheng Shi、Rui Zhu、Can Jin
DOI:10.1021/acs.orglett.1c00268
日期:2021.3.5
A visible-light-induced radicaltandemcyclization/arylation between 2-amino-1, 4-naphthoquinone and N-allyl-2-bromo-2,2-difluoroacetamides has been developed without an external photocatalyst. The transformation could be carried out at room temperature and gave a variety of C-3-functionalized 2-amino-1,4-naphthoquinone derivatives in moderate to excellent yields. Moreover, mechanistic studies revealed
Manganese(III) Acetate Initiated Oxidative Free Radical Reaction between 2-Anilino-1,4-naphthoquinones and Diethyl Malonate
作者:Che-Ping Chuang、Sheow-Fong Wang
DOI:10.1002/jccs.199700042
日期:1997.6
AbstractA free radical reaction between 2‐anilino‐1,4‐naphthoquinones and diethyl malonate initiated by manganese (III) acetate is described. This reaction provides a novel method for the synthesis of 5,6,11,12‐tetra‐hydro‐6,11‐dioxo‐benzo[b]acridines. With a meta substituent on the anilino group, this reaction shows poor to high regioselectivity depending on the steric effect of the substituents on the anilino group and malonate.