these derivatives showed certain pregnancy terminating activity in aminal tests. among them, 2-biphenylyl group compounds exhibited more potent activity than the others.
药理试验表明:上述化合物均有不同程度的口服抗早孕活性,其中以2-联苯基取代物活性较高。
preliminary pharmacological studies in vitro showed that most of these compounds exhibited vasodilative activities. compound f11 showed the strongest effect.