Two racemic isomeric dihydronaphthalenes 1 and 2 were prepared from commercially available 5-hydroxytetralone in five linear steps. A key palladium-catalyzed double bond migration led to the synthesis of both isomers from the same starting material. Preparative chiral HPLC separation provided the enantiomerically pure materials. An asymmetric synthesis employing CBS reduction to furnish 1 was also developed. (C) 2004 Elsevier Ltd. All rights reserved.
Dihydronaphthalene compounds, compositions, uses thereof, and methods for synthesis
申请人:Amgen Inc.
公开号:US07361789B1
公开(公告)日:2008-04-22
The present invention relates to novel dihydronaphthalene compounds, compositions, methods for using the same, and processes for preparing the same. The present invention also relates to novel total synthesis approaches for preparing these compounds. In addition, the present invention relates to methods of producing quantities of isomers of these compounds and separating and purifying them using chiral separation techniques. The present invention also relates to methods of producing quantities of a single isometric compound without the need for chiral separation techniques.
作者:Xin Wang、Ying Chen、Richard Crockett、Jorge Briones、Tony Yan、Carlos Orihuela、Benxin Zhi、John Ng
DOI:10.1016/j.tetlet.2004.09.063
日期:2004.11
Two racemic isomeric dihydronaphthalenes 1 and 2 were prepared from commercially available 5-hydroxytetralone in five linear steps. A key palladium-catalyzed double bond migration led to the synthesis of both isomers from the same starting material. Preparative chiral HPLC separation provided the enantiomerically pure materials. An asymmetric synthesis employing CBS reduction to furnish 1 was also developed. (C) 2004 Elsevier Ltd. All rights reserved.