Synthetische und NMR-spektroskopische Untersuchungen der Benzylaminaddition an N-Maleyl-aminos�urederivate
摘要:
During the addition of amines to maleylamino acids in general beta-amino derivatives are formed. In order to change the reactivity within the vinylogous maleyl system we introduced the beta-benzylester group into the starting compound N-(cis-beta-carboxyacryloyl)-phenylalanine methylester 1. The obtained benzylester 2 is adding benzylamine in alpha-position yielding N-benzyl-alpha-aspartyl(beta-benzyl)-phenylalanine methylester 4. The addition reaction was investigated by H-1-NMR-spectroscopy. The structures of the compounds have been confirmed by elemental analysis, IR, H-1-NMR and C-13-NMR spectroscopy.