A highly diastereoselective oxa-Pictet-Spengler approach to (+)-astropaquinone B and (+)-astropaquinone C and the formation of astropaquinone B dimer
摘要:
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.
A highly diastereoselective oxa-Pictet-Spengler approach to (+)-astropaquinone B and (+)-astropaquinone C and the formation of astropaquinone B dimer
摘要:
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.