Direct Enantioselective Organocatalytic Hydroxymethylation of Aldehydes Catalyzed by α,α-Diphenylprolinol Trimethylsilyl Ether
作者:Robert K. Boeckman、John R. Miller
DOI:10.1021/ol9017479
日期:2009.10.15
The directenantioselective hydroxymethylation of aldehydes utilizing α,α-diphenylprolinoltrimethylsilylether as an organocatalyst is described. The intermediate α-substituted β-hydroxyaldehydes were not isolated but converted to the more readily isolable derivatives. For example, the derived hydroxy acids were isolated in up to 94% yield with excellent enantioselectivity.
Synthesis of Enantiomerically Enriched 2-Hydroxymethylalkanoic Acids by Oxidative Desymmetrisation of Achiral 1,3-Diols Mediated by<i>Acetobacter aceti</i>
作者:Elisabetta Brenna、Flavia Cannavale、Michele Crotti、Valerio De Vitis、Francesco G. Gatti、Gaia Migliazza、Francesco Molinari、Fabio Parmeggiani、Diego Romano、Sara Santangelo
DOI:10.1002/cctc.201601051
日期:2016.12.19
achiral 2‐alkyl‐1,3‐diols is performed by oxidation of one of the two enantiotopic primary alcohol moieties by means of Acetobacter aceti MIM 2000/28 to afford the corresponding chiral 2‐hydroxymethyl alkanoicacids (up to 94 % ee). The procedure, carried out in aqueous medium under mild conditions of pH, temperature and pressure, contributes to enlarge the portfolio of enzymatic oxidations available
Disclosed are polynucleotides encoding polypeptides having Aureobasidin A synthetase activity and Aureobasidin A synthetase-like activity. The invention also provides methods for detecting AbA synthetase proteins and nucleic acids and AbA synthetase-like proteins and nucleic acids in cells, and method for producing AbA synthetase polypeptides.