Phenyl sulfamate derivatives represented by the following formula or salts thereof have a powerful inhibitory effect on steroid sulfatase and are hence useful for the prophylaxis or treatment of diseases associated with steroids such as estrogens, such as breast cancer, corpus uteri cancer, endometrial hyperplasia, infertility, endometriosis, adenomyosis uteri, autoimmune disease, dementia or Alzheimer's disease.
 wherein R1 and R2 each independently represent a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom, a halogen atom, a lower alkyl group, -OSO2NR1R2, a lower alkanoylamino group, a nitro group or a cyano group; and A represents a substituted or unsubstituted phenyl group, a group of the formula -X-NR4R5, or the like.
                            下式所代表的
氨基磺酸苯酯衍
生物或其盐类对类
固醇硫酸酯酶有很强的抑制作用,因此可用于预防或治疗与类
固醇如
雌激素有关的疾病,如乳腺癌、子宫癌、子宫内膜增生症、不孕症、子宫内膜异位症、子宫腺肌症、自身免疫性疾病、痴呆症或阿尔茨海默病。
 其中 R1 和 R2 各自独立地代表氢原子或低级烷基;R3 代表氢原子、卤素原子、低级烷基、-OSO2NR1R2、低级烷酰胺基、硝基或
氰基;A 代表取代或未取代的苯基、式 -X-NR4R5 的基团或类似基团。