110386-56-6Relevant academic research and scientific papers
Oxidation of Aphidicolin and Its Conversion into 19-Noraphidicolan-16β-ol
Gordon, John F.,Hanson, James R.,Jarvis, Andrew G.,Ratcliffe, Arnold H.
, p. 3019 - 3022 (2007/10/02)
The preparation of the 3α,18-monoacetonide of aphidicolin and its selective oxidation at C-17, is described.Catalytic oxidation of aphidicolin affords 16β-hydroxy-3-oxo-19-noraphidicolan-17-oic acid.The conversion of this into 19-noraphidicolan-16β-ol and its biotransformation by the fungus, Cephalosporium aphidicola, to a 19-noraphidicolin, is reported.
Aphidicolin Synthetic Studies: A Stereocontrolled End Game
Rizzo, Carmelo J.,Smith, Amos B.
, p. 969 - 979 (2007/10/02)
A highly efficient, stereocontrolled synthesis of (+)-aphidicolin 1 from the well-known degradation product, acetonide 17-nor ketone 2a, has been achieved.Key steps included palladium(0)-catalysed carbonylation of the enol triflate derived from 2a and stereoselective epoxidation of the resultant α,β-unsaturated ester.Hydride reduction then furnished the C(16,17) vicinal diol moiety of 1.Similarly transformed to aphidicolin were the Corey 2,2-dimethylpropylidenedioxy synthetic intermediate 2b and the bis-tert-butyldimethylsilyl ether 2c.The latter further served as synthetic precursor to the naturally occurring derivative (+)-aphidicolin 17-acetate 26.The preparation and biological evaluation of the unnatural 16-methoxycarbonyl congeners 28 and 29 are also discussed.
