摘要:
CuCN-catalyzed reaction ofthe (1R)-isomer of 4-cyclopentene-1,3-diol monoacetate with TBDPSO(CH2)(6)MgCl produced an S(N)2-type product regioselectively in high yield. Mitsunobu inversion of the product and subsequent Claisen rearrangement furnished aldehyde with the two side chains, from which the title compounds were synthesized efficiently. (c) 2006 Elsevier Ltd. All rights reserved.