Synthesis and biocatalytic ene-reduction of Knoevenagel condensation compounds by the marine-derived fungus Penicillium citrinum CBMAI 1186
作者:David E.Q. Jimenez、Irlon M. Ferreira、Willian G. Birolli、Luis P. Fonseca、André L.M. Porto
DOI:10.1016/j.tet.2016.02.014
日期:2016.11
The chemoselective bioreduction of α,β-unsaturatedcompounds is an important synthetic tool that can have applications in the synthesis of many fine chemicals and pharmaceutical molecules. The synthesis of aromatic malononitrile derivatives through Knoevenagel condensation by microwave radiation under green chemistry conditions using methanol like solvent, free base and free catalyst is here reported
Enantioselective ene‐reduction of
<i>E</i>
‐2‐cyano‐3‐(furan‐2‐yl) acrylamide by marine and terrestrial fungi and absolute configuration of (
<i>R</i>
)‐2‐cyano‐3‐(furan‐2‐yl) propanamide determined by calculations of electronic circular dichroism (ECD) spectra
作者:David E.Q. Jimenez、Juliana C. Barreiro、Fernando M. Santos、Suzan P. Vasconcellos、André L.M. Porto、João M. Batista
DOI:10.1002/chir.23078
日期:2019.7
terrestrial fungi Aspergillus sp. FPZSP 146 and Aspergillus sp. FPZSP 152. A compound with an uncommon CN‐bearing stereogenic center at the α‐C position was obtained by enantioselective reactions mediated in the presence of the microorganisms yielding the (R)‐2‐cyano‐3‐(furan‐2‐yl) propanamide 3a. Its isolated yield and e.e. ranged from 86% to 98% and 39% to 99%, respectively. The absoluteconfiguration of