188200-11-5Relevant articles and documents
Proline-catalyzed α-aminooxylation of β-amino aldehydes: Access to enantiomerically pure syn - And anti -3-Amino-3-aryl-1,2-alkanediols
Venkataramasubramanian,Kiran, I. N. Chaithanya,Sudalai, Arumugam
, p. 355 - 358 (2015/03/05)
A new synthetic method for enantioselective synthesis of syn or anti-3-amino-3-aryl-1,2-alkanediols via proline catalyzed α-aminooxylation of β-amino aldehydes are described. This methodology is successfully applied to a concise and protecting group-free asymmetric synthesis of (-)-cytoxazone, (+)-epi-cytoxazone and formal synthesis of N-thiolated 2-oxazolidinone.
A highly efficient and practical method for catalytic Asymmetric Vinylogous Mannich (AVM) reactions
Carswell, Emma L.,Snapper, Marc L.,Hoveyda, Amir H.
, p. 7230 - 7233 (2007/10/03)
(Chemical Equation Presented) Very selective but very easy: These are two of the attributes of the asymmetric vinylogous Mannich reactions presented herein. These reactions can be run on a gram scale and in undistilled THF and air (see scheme; TMS = SiMe3). All that is needed is commercially available AgOAc, a readily available amino acid derived phosphine, and a commercially available or easily prepared (one step) siloxyfuran.
Nucleophilic additions of Grignard reagents to N-benzyl-2,3-O- isopropylidene-D-glyceraldehyde nitrone (BIGN). Synthesis of (2S,3R) and (2S,3S)-3-phenylisoserine
Merino, Pedro,Castillo, Elena,Franco, Santiago,Merchan, Francisco L.,Tejero, Tomas
, p. 12301 - 12322 (2007/10/03)
A remarkable Lewis acid tuning has been observed in the nucleophilic addition of Grignard reagent to BIGN, the N-benzyl nitrone derived from 1,2- O-isopropylidene-D-glyceraldehyde. The obtained α,β-dialkoxy hydroxylamines can serve as starting points for the synthesis of both aminodiols and α- hydroxy-β-amino acids. This synthetic approach is illustrated by the synthesis of the antipode of the C-13 side chain of Taxotere as well as its C-3 epimer.