Antifungal dipeptides incorporating an inhibitor of homoserine dehydrogenase
作者:Andrzej S. Skwarecki、Marta Schielmann、Dorota Martynow、Marcin Kawczyński、Aleksandra Wiśniewska、Maria J. Milewska、Sławomir Milewski
DOI:10.1002/psc.3060
日期:2018.1
The antifungal activity of 5‐hydroxy‐4‐oxo‐l‐norvaline (HONV), exhibited under conditions mimicking human serum, may be improved upon incorporation of this amino acid into a dipeptide structure. Several HONV‐containing dipeptides inhibited growth of human pathogenic yeasts of the Candida genus in the RPMI‐1640 medium, with minimal inhibitory concentration values in the 32 to 64 μg mL−1 range. This
The stereoselective syntheses of the antibiotics (-)-HON (5-hydroxy-4-oxo-L-norvaline, RI-331) and (+)-negamycin starting from (S)-4-[(Z)-2-(benzyloxycarbonylamino)-2-(tert-butoxycarbonyl)vinyl]-2, 2-dimethyl-1,3-dioxolane and (R)-3-benzyloxycarbonyl-5-[(Z)-2-(tert-butoxycarbonylamino)-2-(methoxycarbonyl) vinyl] -2, 2-dimethyl-1,3-oxazolidine, respectively, are described.
Synthesis of γ-oxo α-amino acids from L-aspartic acid
作者:Alexander S. Golubev、Norbert Sewald、Klaus Burger
DOI:10.1016/0040-4020(96)00942-8
日期:1996.11
of different γ-oxo α-amino acids from hexafluoroacetone protected L-aspartic acid chloride 1 via Stille cross coupling reaction is described. Stille reaction of 1 with vinyltributyltin followed by Lewis acid catalyzed intramolecular Michael addition provides access to 4-substituted pipecolicacidderivatives. An efficient synthesis of 5-hydroxy-4-oxo-L-norvaline 7 and a new approach to the 4-oxo-L-ornithine
Stereoselective synthesis of S-norvaline and related amino acids through a common intermediate
作者:José C. Espinoza-Hicks、David Chavez-Flores、Gerardo Zaragoza-Galan、Alejandro A. Camacho-Davila
DOI:10.1007/s00726-023-03289-y
日期:2023.7
and ɣ-oxonorvaline. These were synthesized in good yields (45–75%) from the common starting material (S)-allylglycine obtained by asymmetric transfer allylation of glycine Schiff base using the Corey catalyst derived from cinchonidine in more than 97% enantiomericexcess.