A two-step reaction sequence starting with the indium-mediatedallenylation of aldehydes with 4-bromo-2-butyn-1-ols and subsequent ozonolysis of the resulting allenylic product was developed to generate a variety of dihydroxyacetone derivatives. The regioselectivity of the indium-promoted C–C bond-forming reaction can be manipulated through hydroxy protecting groups on 4-bromo-2-butyn-1-ol, yielding
Synthesis and bioluminescence-inducing properties of autoinducer (S)-4,5-dihydroxypentane-2,3-dione and its enantiomer
作者:Manikandan Kadirvel、William T. Stimpson、Souad Moumene-Afifi、Biljana Arsic、Nicola Glynn、Nigel Halliday、Paul Williams、Peter Gilbert、Andrew J. McBain、Sally Freeman、John M. Gardiner
DOI:10.1016/j.bmcl.2010.02.064
日期:2010.4
The autoinducer (4S)-4,5-dihydroxypentane-2,3-dione ((S)-DPD, AI-2) facilitates chemical communication, termed 'quorum sensing', amongst a wide range of bacteria, The synthesis of (S)-DPD is challenging in part due to its instability. Herein we report a novel synthesis of (S)-DPD via (2S)-2,3-O-isopropylidene glyceraldehyde, through Wittig, dihydroxylation and oxidation reactions, with a complimentary asymmetric synthesis to a key precursor. Its enantiomer (R)-DPD, was prepared from D-mannitol via (2R)2,3-O-isopropylideneglyceraldehyde. The synthesized enantiomers of DPD have AI-2 bioluminescenceinducing properties in the Vibrio harveyi BB170 strain. (C) 2010 Elsevier Ltd. All rights reserved.