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或可被取代的碳氢基团,或者R1和R2形成一个3至8个成员的碳氢或杂环环,该环可能被取代;R3为H,一个可被取代的低碳基或一个可被取代的芳香基;R4为(1)一个可被取代的芳香基,(2)一个被可被取代的芳香基取代的脂肪烃基,该烃基可能被进一步取代,或者(3)一个酰基;X和Y分别为氧或
硫,可能被氧化;环A为一个苯环,可能被进一步取代,或者其盐,可用作抑制神经退化的药物。