Formal Total Synthesis of Hybocarpone Enabled by Visible-Light-Promoted Benzannulation
作者:Wei Chen、Renyu Guo、Zhen Yang、Jianxian Gong
DOI:10.1021/acs.joc.8b02595
日期:2018.12.21
total synthesis of hybocarpone was achieved in eight steps from commercially available 1,2,4-trimethoxybenzene. Key transformations include a visible-light-promoted benzannulation to construct the key α-naphthol intermediate and a modified CAN-mediated dimerization/hydration cascade sequence to generate the vicinal all-carbon quaternary centers in a stereocontrolled manner. The total synthesis of boryquinone
[EN] TOTAL SYNTHESIS OF REDOX-ACTIVE 1.4-NAPHTHOQUINONES AND THEIR METABOLITES AND THEIR THERAPEUTIC USE AS ANTIMALARIAL AND SCHISTOMICIDAL AGENTS<br/>[FR] SYNTHÈSE TOTALE DE 1,4-NAPHTOQUINONES PRÉSENTANT UNE ACTIVITÉ D'OXYDO-RÉDUCTION ET DE LEURS MÉTABOLITES ET LEUR UTILISATION THÉRAPEUTIQUE COMME AGENTS ANTIPALUDIQUES ET SCHISTOMICIDES
申请人:CENTRE NAT RECH SCIENT
公开号:WO2012131010A1
公开(公告)日:2012-10-04
Naphthoquinones, azanaphthoquinones and benxanthones, their process of synthesis and their use as antimalarial or antischistosomal agents.
Herein, we report a safe and economical multigramsynthesis of 6-fluoromenadione, an intermediate in the synthesis of novel biologically active agents. The key to this six-step sequence process involves the condensation of the readily available starting 4′-fluoropropiophenone and glyoxylic acid, a bromination–elimination sequence from 7-fluoro-3-methyltetral-1-one allowing aromatization of the naphthol