Ti(III)-Promoted Radical Cyclization of Epoxy Enones. Total Synthesis of (+)-Paeonisuffrone
摘要:
The total synthesis of (+)-paeonisuffrone starting from (+)-10-hydroxycarvone is described. The key step of our synthetic strategy is a titanium-catalyzed stereoselective cyclization initiated by epoxide opening through electron transfer. This reaction stereoselectively affords the highly oxygenated pinane skeleton present in the target molecule and opens a new and effective approach to the synthesis of the complex, biologically active terpenoids isolated from the roots of the Chinese paeony (Paeonia albiflora Pallas and Paeonia suffruticosa Andrews).
Ti(III)-Promoted Radical Cyclization of Epoxy Enones. Total Synthesis of (+)-Paeonisuffrone
摘要:
The total synthesis of (+)-paeonisuffrone starting from (+)-10-hydroxycarvone is described. The key step of our synthetic strategy is a titanium-catalyzed stereoselective cyclization initiated by epoxide opening through electron transfer. This reaction stereoselectively affords the highly oxygenated pinane skeleton present in the target molecule and opens a new and effective approach to the synthesis of the complex, biologically active terpenoids isolated from the roots of the Chinese paeony (Paeonia albiflora Pallas and Paeonia suffruticosa Andrews).
Ti(III)-Promoted Radical Cyclization of Epoxy Enones. Total Synthesis of (+)-Paeonisuffrone
作者:María Martín-Rodríguez、Raquel Galán-Fernández、Andrés Marcos-Escribano、Francisco A. Bermejo
DOI:10.1021/jo8026033
日期:2009.2.20
The total synthesis of (+)-paeonisuffrone starting from (+)-10-hydroxycarvone is described. The key step of our synthetic strategy is a titanium-catalyzed stereoselective cyclization initiated by epoxide opening through electron transfer. This reaction stereoselectively affords the highly oxygenated pinane skeleton present in the target molecule and opens a new and effective approach to the synthesis of the complex, biologically active terpenoids isolated from the roots of the Chinese paeony (Paeonia albiflora Pallas and Paeonia suffruticosa Andrews).