195315-76-5Relevant academic research and scientific papers
Stereocontrol by intrinsic antiparallel double repulsion on diacetone-D-glucose template. Diastereoselective synthesis of 3(S)-isothiocyanato-3-deoxy-3-C-vinyl glucose via (3,3)-sigmatropic rearrangement of allylic thiocyanates
Gonda, Jozef,Bednarikova, Miroslava
, p. 5569 - 5572 (1997)
A stereoselective synthesis of the branched-chain sugar 3(S)-isothiocyanato-3-deoxy-3-C-vinyl glucose via (3,3)-sigmatropic rearrangement of allylic thiocyanates prepared from D-glucose is presented. The side chain at C-4 of the substrates 4-Z, 4-E and and 8-E is not a decisive factor for stereocontrol in the (3,3)-sigmatropic rearrangement of allylic thiocyanates, and the 1,2-O-isopropylidene group in each isomer profoundly affects the direction of the rearrangement.
Creation of quarternary stereocentres via [3,3]-sigmatropic rearrangement of allylic thiocyanates. A synthetic approach to (+)-myriocin
Gonda, Jozef,Martinkova, Miroslava,Raschmanova, Jana,Balentova, Eva
, p. 1875 - 1882 (2007/10/03)
A stereoselective approach to the advanced precursor of (+)-myriocin, 3-deoxy-1,2:5,6-di-O-isopropylidene-3-methoxycarbonylamino-α-d-glucofuranose 3-C-carboxylic acid, via the [3,3]-sigmatropic rearrangement of allylic thiocyanates prepared from d-glucose is presented. From the observed results, supported by DFT calculations, we can conclude that the [3,3]-sigmatropic rearrangement of the thiocyanato group in allylic hexofuranosides is strongly influenced by the steric interaction of the 1,2-O-isopropylidene group in the transition states.
