522644-08-2Relevant academic research and scientific papers
Efficient enzymatic routes for the synthesis of new eight-membered cyclic β-amino acid and β-lactam enantiomers
Forró, Eniko,Kiss, Loránd,árva, Judit,Fül?p, Ferenc
, (2017)
Efficient enzymatic resolutions are reported for the preparation of new eight-membered ring-fused enantiomeric β-amino acids [(1R, 2S)-9 and (1S, 2R)-9] and β-lactams [(1S, 8R)-3, (1R, 8S)-3 (1S, 8R)-4 and (1R, 8S)-7], through asymmetric acylation of (±)-4 (E > 100) or enantioselective hydrolysis (E > 200) of the corresponding inactivated (±)-3 or activated (±)-4 β-lactams, catalyzed by PSIM or CAL-B in an organic solvent. CAL-B-catalyzed ring cleavage of (±)-6 (E > 200) resulted in the unreacted (1S, 8R)-6, potential intermediate for the synthesis of enantiomeric anatoxin-a. The best strategies, in view of E, reaction rate and product yields, which underline the importance of substrate engineering, are highlighted.
Synthesis of alicyclic trans-β-amino acids from cis-β- hydroxycycloalkane-carboxylates
Kiss, Lorand,Forro, Eniko,Bernath, Gabor,Fueloep, Ferenc
, p. 1265 - 1268 (2007/10/03)
A simple and efficient method is described for the preparation of both racemic and enantiopure trans-β-amino acids with a cycloheptane or cyclooctane skeleton, starting from racemic and enantiopure ethyl cis-2-hydroxycarboxylates. Georg Thieme Verlag Stut
Lipase-catalyzed enantioselective ring opening of unactivated alicyclic-fused beta-lactams in an organic solvent.
Forro, Eniko,Fueloep, Ferenc
, p. 1209 - 1212 (2007/10/03)
[reaction: see text] A highly efficient and very simple method was developed for the synthesis of enantiopure beta-amino acids (e.g. cispentacin) and beta-lactams through the enzyme-catalyzed enantioselective ring opening of unactivated alicyclic beta-lac
