Cn. Farthing et al., SYNTHESES OF (S)-BETA-PYRAZOLYLALANINE AND (S)-QUISQUALIC ACID FROM ASERINE-DERIVED AZIRIDINE, Tetrahedron letters, 37(29), 1996, pp. 5225-5226
The naturally occurring amino acids (S)-beta-pyrazolylalanine and (S)-
quisqualic acid are synthesised via the nucleophilic ring-openings of
an optically active aziridine by pyrazole and 1,2,4-oxadiazolidine-3,5
-dione, respectively. Copyright (C) 1996 Published by Elsevier Science
Ltd