作者:Susanne M. Wickel、Christian A. Citron、Jeroen S. Dickschat
DOI:10.1002/ejoc.201300049
日期:2013.5
Volatiles emitted by the soil fungi Trichoderma viride 272 and Trichoderma asperellum 328 were collected by using the closed loop stripping analysis (CLSA) headspace technique, and the obtained extracts were analysed by GC/MS. Several alkyl- and alkenyl-2H-pyran-2-ones, including known compounds 6-pentyl-2H-pyran-2-one and (E)-6-(pent-1-en-1-yl)-2H-pyran-2-one, and the new derivatives (E)-6-(pent-
Synthesis of 6-Substituted 2-Pyrones Starting from Renewable Resources: Total Synthesis of Sibirinone, (<i>E</i>)-6-(Pent-1-en-1-yl)-2<i>H</i>-pyran-2-one, and (<i>E</i>)-6-(Hept-1-en-1-yl)-2<i>H</i>-pyran-2-one
作者:Daniel Dobler、Oliver Reiser
DOI:10.1021/acs.joc.6b01339
日期:2016.11.4
An atom-economic reaction sequence to 6-substituted 2-pyrones was developed startingfrom furfuryl alcohol, a renewable resource made from bran or bagasse, and aldehydes, utilizing a thermal rearrangement of cyclopentadienone epoxides as key step. Derivatives bearing a hydroxyalkyl side chain could be enzymatically resolved, providing access to enantiomerically pure 2-pyrones, or converted to alkenyl-substituted