32425-83-5Relevant articles and documents
A new short synthetic approach to cyclopentaphenanthrenones
Gacs-Baitz, Eszter,Minuti, Lucio,Taticchi, Aldo
, p. 10359 - 10366 (2007/10/02)
The Diels-Alder reactions of 4-acetoxy-2-cyclopenten-1-one and 2-bromo-4- acetoxy-2-cyclopenten-1-one with vinylarenes are discussed. The aromatization of the reaction products opens a new two-step route for the synthesis of cyclopentaphenanthrenones. Structure analysis of reaction products by 1H and 13C-NMR spectroscopy is reported.
New Synthetic Approaches to Cyclopentaphenanthrenes and Their Carcinogenic Derivatives
Lee, Hongmee,Harvey, Ronald G.
, p. 4253 - 4256 (2007/10/02)
A new general synthetic approach to cyclopentaphenanthrenes including their carcinogenic 11-methyl (1b) and 17-keto (2d and 2b) derivatives is reported.The simplest example entails alkylation of the bromomagnesium salt of an enamine derivative of cyclo