Synthesis and biological activity of novel ester derivatives of N3-(4-metoxyfumaroyl)-(S)-2,3-diaminopropanoic acid containing amide and keto function as inhibitors of glucosamine-6-phosphate synthase
N3-4-metoxyfumaroyl-(S)-2,3-diaminopropanoicacid (FMDP) containing amide or keto functions have been designed and synthesized. Their antifungal activity and inhibitory properties toward fungal glucosamine-6-phosphate synthase has also been evaluated. The obtained compounds 11–13 and 15–17 demonstrated good antifungal activity against Candida albicans. Compounds 11–13 displayed also potent inhibitory activity against
Several optically active 4-oxazolidinones were obtained from amides or N-methylamides of corresponding α-hydroxyacids. The influence of solvent and substituent on their CD was studied. The predominance of the envelope conformation was established for these compounds, the degree of puckering being enhanced by polar solvents. The folded form with the aromatic ring facing the oxazolidinone ring was observed
作者:Klaus Totschnig、Ernst P. Ellmerer-Müller、Paul Peringer
DOI:10.1080/10426509608046388
日期:1996.6.1
phenyldi-chlorophosphine with the N-methylamides of α-hydroxy isobutyric acid and the two chiral carboxylic acids (S) lactic acid and (R,S) mandelic acid, which leads to diastereomeric products. Reaction control by means of 31P n.m.r. demonstrates two surprising findings: the preferred generation of the thermody-namically less stable cis-isomer and an epimerization of the phosphorus chirality centre at room