A highly diastereoselective oxa-Pictet-Spengler approach to (+)-astropaquinone B and (+)-astropaquinone C and the formation of astropaquinone B dimer
作者:Rodney A. Fernandes、Sandip V. Mulay
DOI:10.1016/j.tetasy.2013.09.001
日期:2013.10
A concise and highly diastereoselective synthesis of (+)-astropaquinone B and (+)-astropaquinone C is reported. The synthetic strategy is based on an efficient combination of Dotz benzannulation using a chiral alkyne to construct the naphthalene unit and a highly diastereoselective oxa-Pictet-Spengler reaction to install the trans-configured pyran ring as the key steps. (C) 2013 Elsevier Ltd. All rights reserved.