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。
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。
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