Sequential Baylis–Hillman reaction and radical cyclization of furanose derivatives: expeditious approach to enantiopure benzo-fused nine-membered oxacycles
摘要:
A regioselective 9-endo-trig aryl radical cyclization of D-glucose derived diastereomeric Baylis-Hillman reaction products with Bu3SnH led to highly functionalized tricyclic benzannulated ethers incorporating cis- and trans-9,5 bicyclic systems in good yields. Degradation of one of the products afforded an enantiopure multifunctionalized benzoxonine derivative. (c) 2006 Elsevier Ltd. All rights reserved.
Sequential Baylis–Hillman reaction and radical cyclization of furanose derivatives: expeditious approach to enantiopure benzo-fused nine-membered oxacycles
摘要:
A regioselective 9-endo-trig aryl radical cyclization of D-glucose derived diastereomeric Baylis-Hillman reaction products with Bu3SnH led to highly functionalized tricyclic benzannulated ethers incorporating cis- and trans-9,5 bicyclic systems in good yields. Degradation of one of the products afforded an enantiopure multifunctionalized benzoxonine derivative. (c) 2006 Elsevier Ltd. All rights reserved.