898232-17-2Relevant academic research and scientific papers
Enantiodivergent synthesis of D- and L-erythro-sphingosines through Mannich-type reactions of N-benzyl-2,3-O-isopropylidene-D-glyceraldehyde nitrone
Merino, Pedro,Jimenez, Pablo,Tejero, Tomas
, p. 4685 - 4688 (2007/10/03)
The addition of a 2-silyloxy silylketene acetal to N-benzyl-2,3-O- isopropylidene-D-glyceraldehyde nitrone (Mannich-type reaction) can be stereocontrolled to give 2S,3S,4S and 2R,3R,4S adducts as major compounds, depending on whether the reaction is activated with zinc(II) triflate or tin-(IV) chloride, respectively. The corresponding major adducts were used for preparing diastereomeric polyhydroxy-β-aminoesters that were further converted into suitable orthogonally protected enantiomeric D- and L-erythro-sphingosines.
