Nj. Church et Dw. Young, SYNTHESIS OF STEREOSPECIFICALLY LABELED D-PROP-2-YNYLGLYCINE AND INVESTIGATION OF THE ACTION OF D-AMINO-ACID OXIDASE, Journal of the Chemical Society, Chemical Communications, (8), 1994, pp. 943-944
Stereospecifically deuteriated samples of D-prop-2-ynylglycine 1 are s
ynthesised by reaction of the labelled aziridines 13 with a carbon nuc
leophile followed by deprotection; incubation of these samples with D-
amino acid oxidase indicates that, in formation of the lactone 5, depr
otonation at C-3 is non-stereospecific, strongly supporting non-enzyma
tic deprotonation as a key step in the formation of this compound.