Î2-OPC-8:0 (6), designed as a β-oxidation-insensitive analogue, was synthesized starting with 4-cyclopentene-1,3-diol monoacetate (5) in a stereocontrolled manner. The C(3)-C(8) moiety was first attached to the cyclopentene ring by using the Cu-catalyzed SN2-type reaction with TBDPSO(CH2)6MgCl and was later converted into the full side chain by Wittig reaction. In addition, OPC-6:0 (3) was synthesized.
作者:Kaori Yagi、Hisato Nonaka、Hukum P. Acharya、Kazushi Furukawa、Takayuki Ainai、Yuichi Kobayashi
DOI:10.1016/j.tet.2006.03.001
日期:2006.5
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.