Several derivatives of hadacidin have been developed and evaluated for activity against adenylosuccinate synthetase. (C) 2010 Elsevier Ltd. All rights reserved.
A series of N-hydroxyamino acids and their esters (9a, b, d-k) coupled with N-hydroxyglycinamide (9c) were synthesized through facile preparations of N-furfurylidenealkoxy (and hydroxy) carbonylalkylamine N-oxides (7a, b, d-g) and N-furfurylidenecarbamoylmethylamine N-oxide (7c) followed by hydrolysis. The method was applied to the syntheses of emimycin (1) and hadacidin monosodium salt (2b).
A new synthetic route to α,β-unsaturated N-acyl-α-amino acidesters (N-acyl-α-dehydroamino acidesters) is described. The dehydroamino acidesters were prepared by the dehydration of α-(N-acylhydro...