Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: (S)-3-Methoxypyrrolidine, is researched, Molecular C5H11NO, CAS is 120099-61-8, about Development of peptide epoxyketones as selective immunoproteasome inhibitors.Synthetic Route of C5H11NO.
A series of epoxyketone analogs with varying N-caps and P3-configurations were designed, synthesized and evaluated. We found that D-Ala in P3 was crucial for β5i selectivity over β5c. Notably, compounds (I) (R1 = II) (β5i IC50 = 26.0 nM, 25-fold selectivity) and I (r1 = III) (β5i IC50 = 25.1 nM, 24-fold selectivity) with the D-configuration at P3 were the most selective inhibitors. Although I (R1 = II and III) showed only moderate anti-proliferative activity against RPMI-8226 and MM.1S cell lines, based on our experiments, it indicates that the inhibition of β5i alone is not sufficient to exert anticancer effects and may rely on the complementary inhibition of β1i, β5c and β5i. These data further increase our understanding of immunoproteasome inhibitors in hematol. malignancies.
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Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia