λ3-Iodane-mediated arenol dearomatization. Synthesis of five-membered ring-containing analogues of the aquayamycin ABC tricyclic unit and novel access to the apoptosis inducer menadione
作者:Nathalie Lebrasseur、Gao-Jun Fan、Mayalen Oxoby、Matthew A. Looney、Stéphane Quideau
DOI:10.1016/j.tet.2004.11.072
日期:2005.2
rapid access to highly functionalized naphthoid cyclohexa-2,4-dienones. These synthons can serve as valuable intermediates in the construction of the angularly-oxygenated benz[a]naphthalene ABC ring system of aquayamycin- and SS-228Y-type antibiotic angucyclinones, and analogues thereof. This methodology led to the elaboration of five-membered A ring-containing analogues of this ABC tricyclic unit. In
的λ 3 -iodane [双(三氟乙酰氧基)]碘苯(BTI) -介导的氧化的2- alkoxyarenols与外部软碳系亲核试剂脱芳构化构成对高度功能化naphthoid环己-2,4-二烯酮一个快速访问。这些合成子可以用作水霉素和SS-228Y型抗生素环环素酮的角加氧苯并[ a ]萘ABC环体系及其类似物的构建中的有价值的中间体。这种方法学导致了该ABC三环单元的五元含A环类似物的阐述。此外,可以利用BTI介导的2-甲基萘酚的氧化活化来制备甲萘醌(即维生素K 3),已知可诱导细胞凋亡和自动分裂,这是一种新型的癌细胞死亡。