Stereoselective Construction of a β-Isopropenyl Alcohol Moiety at the C(2) and (3) of Kallolide A and Pinnatin A Using a [2,3] Wittig Rearrangement of Cyclic Furfuryl Ethers
作者:Masayoshi Tsubuki、Kazunori Takahashi、Toshio Honda
DOI:10.1021/jo035244r
日期:2003.12.1
anti- and syn-beta-isopropenyl alcohol moieties at the C(2)-C(3) positions of kallolide A and pinnatin A was accomplished employing the [2,3] Wittig rearrangement of (E)-and (Z)-cyclic furfuryl ethers 8. Enantioselective Wittig rearrangement of (E)- and (Z)-furfuryl ethers 8 using butyllithium and a chiral bis(oxazoline) was also examined to provide (2R,3R)-homoallylic alcohol anti-9 in up to 61% ee and
使用(E)-和([ Z)-环状糠基醚8。还研究了使用丁基锂和手性双(恶唑啉)对(E)-和(Z)-糠基醚8进行对映选择性Wittig重排,从而提供了(2R,3R)-均烯丙基醇抗9 ee高达93%的ee高达(61%ee)和(2R,3S)-syn-9高达。