Structural requirements for the enzymic deamination of cytosine nucleosides was written by Kreis, W.; Watanabe, K. A.; Fox, J. J.. And the article was included in Helvetica Chimica Acta on April 19,1978.SDS of cas: 56632-83-8 The following contents are mentioned in the article:
Thirty-three 1-β-D-pentofuranosylcytosine nucleosides were examined as substrates of crude cytidine deaminase from mouse kidney. Modification of the aglycone moiety by substitution of a F atom at C(5) resulted in a several-fold increase in the deamination velocity relative to cytidine, whereas insertion of a Me group at C(5) decreased the deamination velocity. This decrease was even more pronounced when a Me group was substituted at C(6). Though xylosylcytosine and 3′-deoxy-3′-fluoroxylocytosine were not substrates for this deaminase, those xylofuranosylcytosines bearing good leaving groups (e.g., bromo, mesyloxy, or tosyloxy) at C(3′) were deaminated with substantial deamination velocities. This is probably due to a prior chem. reaction leading to arabino nucleosides bearing a free 3′-OH in a down configuration. A different situation was obtained with arabino nucleosides. Though 1-β-D-arabinofuranosylcytosine and 2′-deoxy-2′-fluoro-1-β-D-arabinofuranosylcytosine were substrates for this deaminase, substitution of bulky groups (e.g., chloro, bromo, or mesyloxy) at C(2′) substantially decreased the susceptibility to deamination. A hypothesis is offered to explain these differences between xylo- and arabino-cytosines. The presence of a free OH group at the 5′-position is not essential for enzymic deamination. This study involved multiple reactions and reactants, such as 4-Amino-1-((2R,3S,4R,5R)-3-fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidin-2(1H)-one (cas: 56632-83-8SDS of cas: 56632-83-8).
4-Amino-1-((2R,3S,4R,5R)-3-fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidin-2(1H)-one (cas: 56632-83-8) belongs to pyrimidine derivatives. Pyrimidines are isomeric with two other forms of diazines: pyridazine, with the nitrogen atoms in the 1 and 2 positions; and pyrazine, with the nitrogen atoms in the 1 and 4 positions. Drugs having the pyrimidine motif have manifested to exhibit gratifying biological activity like anticancer, antiviral, anti-inflammatory, antibacterial, and antihypertensive activities.SDS of cas: 56632-83-8
56632-83-8;4-Amino-1-((2R,3S,4R,5R)-3-fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidin-2(1H)-one;The future of 56632-83-8;New trend of C9H12FN3O4;function of 56632-83-8