Concise synthesis of yingzhaosu C and epi-yingzhaosu C by peroxyl radical cyclization. Assignment of relative configuration
摘要:
The antimalarial peroxide yingzhaosu C and its diastereoisomer (epi-yingzhaosu C) have been synthesized by means of tandem peroxyl radical cyclization-oxygen entrapment. The relative configuration of yingzhaosu C is assigned as cis (3) on account of NMR data for both diastereoisomers, (2) and (3), and their precursors (8) and (9).
Concise synthesis of yingzhaosu C and epi-yingzhaosu C by peroxyl radical cyclization. Assignment of relative configuration
作者:John Boukouvalas、Roxane Pouliot、Yvon Fréchette
DOI:10.1016/0040-4039(95)00714-n
日期:1995.6
The antimalarial peroxide yingzhaosu C and its diastereoisomer (epi-yingzhaosu C) have been synthesized by means of tandem peroxyl radical cyclization-oxygen entrapment. The relative configuration of yingzhaosu C is assigned as cis (3) on account of NMR data for both diastereoisomers, (2) and (3), and their precursors (8) and (9).
Phosphine-Catalyzed Reductions of Alkyl Silyl Peroxides by Titanium Hydride Reducing Agents: Development of the Method and Mechanistic Investigations
作者:Jason R. Harris、M. Taylor Haynes、Andrew M. Thomas、K. A. Woerpel
DOI:10.1021/jo1008367
日期:2010.8.6
A method that allows for the reduction of protected hydroperoxides by employing catalytic amounts of phosphine is presented. The combination of a titanium(IV) alkoxide and a siloxane allowed for the chemoselective reduction of phosphine oxides in the presence of alkyl silyl peroxides. Subsequent reduction of the peroxide moiety by phosphine provided the corresponding silylated alcohols in useful yields
Palladium(II)-Catalyzed Cyclization of Unsaturated Hydroperoxides for the Synthesis of 1,2-Dioxanes
作者:Jason R. Harris、Shelli R. Waetzig、K. A. Woerpel
DOI:10.1021/ol901046z
日期:2009.8.6
The cyclization of gamma,delta-unsaturated tertiary hydroperoxides in the presence of a palladium(II) catalyst afforded 1,2-dioxanes resembling biologically active natural products. A variety of substrates were screened, and synthetic manipulations were accomplished to construct compounds with structural similarity to antimalarial targets.