Carbocyclic Ribosylamines: Synthesis of 5-Substituted Carbocyclic β-Ribofuranosylamines
作者:James T. Slama、Nimish Mehta、Ewa Skrzypczak-Jankun
DOI:10.1021/jo060920l
日期:2006.9.1
exo-face of the olefin, yielding hydroxylation products that can be converted into analogues of carbocyclic ribosides. Conversely, a sterically small protecting group permits OsO4 approach from the endo-face, yielding hydroxylation products analogous to carbocyclic lyxosides. A key intermediate for carbocyclic sugar production, (1S,2S,3R, 4R,5S)-1-(tert-butyloxycarbonyl)amino-5-bromo-2,3-(dimethylmeth
Cu- and Rh-catalyzed coupling reactions of 2-azabicyclo[2.2.1]hept-5-en-3-ones (1) with arylboronicacids were successful carried out under microwave irradiation conditions and yielded N-aryl and C-aryl derivatives of 1, respectively.
A New Class of Conformationally Rigid Analogues of 4-Amino-5-halopentanoic Acids, Potent Inactivators of γ-Aminobutyric Acid Aminotransferase
作者:Jian Qiu、Richard B. Silverman
DOI:10.1021/jm9904755
日期:2000.2.1
Inactivation leads to covalent attachment of 2 equiv of inactivator after gel filtration; upon ureadenaturation, 1 equiv of radioactivity remains bound to the enzyme. This suggests that, unlike the open-chain anlogue, the conformationally rigid analogue becomes, at least partially, attached to an active-site residue. It appears that the conformational constraint has a larger effect on inactivators that