Evaluation of asymmetric Diels–Alder approaches for the synthesis of the cyclohexene subunit of CP-225,917 and CP-263,114
作者:Alan Armstrong、Nicholas G.M. Davies、Nathaniel G. Martin、Alistair P. Rutherford
DOI:10.1016/s0040-4039(03)00835-9
日期:2003.5
Asymmetric synthesis of a functionalised cyclohexenone required for total synthesis of CP-225,917 and CP-263,114 is reported, using a Lewis acid-promoted Diels–Alder reaction between a 2-silyloxy-1,3-diene and a dienophile bearing an oxazolidinone auxiliary. A novel method for appendage of the exocyclic malonate unit, via cyclopropane ring opening, is also described.
据报道,通过路易斯酸促进的Diels-Alder反应在2-甲硅烷氧基-1,3-二烯与带有恶唑烷酮助剂的亲二烯体之间进行路易斯酸促进的Diels-Alder反应,CP-225,917和CP-263,114的总合成所需的官能化环己烯酮的不对称合成。还描述了通过环丙烷开环连接环外丙二酸酯单元的新方法。