heterocycle with wide reactivity and many useful applications. The reactive O-N bond is usually reduced using molecular hydrogen to obtain amidine derivatives. NH4CO2H-Pd/C is here demonstrated as a new system for the O-N reduction, allowing us to obtain differently substituted acylamidine, acylguanidine and diacylguanidine derivatives. The proposed system is also effective for the achievement of a
1,2,4-恶二唑是一种
杂环化合物,具有广泛的反应活性和许多有用的应用。通常使用分子氢还原反应性ON键以获得脒衍
生物。NH 4 CO 2 H-Pd/C在这里被证明是一种新的ON还原系统,使我们能够获得不同取代的酰基脒、酰基
胍和二酰基
胍衍
生物。该系统还可有效实现 5-(2'-
氨基苯基)-
1,2,4-恶二唑还原重排为 1-烷基
喹唑啉-4(1 H )-酮。
生物碱糖苷也用此方法获得。初步测试了所得化合物的细胞毒性、诱导氧化应激、α-
葡萄糖苷酶和
DPP4 抑制等
生物活性,显示出作为抗糖尿病药物的潜在应用。