A compound of the formula:
wherein R1 and R2 each is H or a hydrocarbon group which may be substituted, or R1 and R2 form a 3- to 8-membered carbo or heterocyclic ring which may be substituted; R3 is H, a lower alkyl which may be substituted or an aromatic group which may be substituted; R4 is (1) an aromatic group which may be substituted, (2) an aliphatic hydrocarbon group substituted by an aromatic group which may be substituted, which hydrocarbon group may be further substituted or (3) an acyl; X and Y each is oxygen or sulfur which may be oxidized; and ring A is a benzene ring which may be further substituted, or a salt thereof, is useful for an agent for suppressing neurodegeneration.
该化合物的
化学式为:其中R1和R2分别为H或可取代的烃基,或R1和R2形成3-8环的碳或杂环,可取代;R3为H,可取代的低烷基或可取代的芳香基;R4为(1)可取代的芳香基,(2)被可取代的芳香基取代的脂肪烃基,该烃基可以进一步取代或(3)酰基;X和Y分别为可氧化的氧或
硫;环A为苯环,可进一步取代,或其盐,可用于抑制神经退行性的药剂。