This invention provides cyclicamino-phenyl sulfamate derivatives represented by a formula
wherein each of R
1
and R
2
stands for hydrogen or lower alkyl; each of R
3
and R
4
stands for hydrogen, halogen, cyano or the like; A stands for nitrogen or CH; B stands for CH
2
, SO
2
, CO, optionally substituted phenyl or the like; and R
5
stands for alkyl, phenyl, amino or the like, or salts thereof which exhibit excellent steroid sulfatase inhibitory activity and are useful for prevention or treatment of diseases associated with steroids such as estrogen, androgen and the like.
Novel pyrimidinyl pyrazole derivatives were synthesized and examined for cytotoxic and antitumor activity. Mannich reaction was employed to construct this scaffold. Among the compounds synthesized, a series of propene derivatives exhibited a potent cytotoxic activity against some tumor cell lines including multidrug resistant cell lines due to the overexpression of P-glycoprotein. The vinyl bond moiety in the scaffold was believed to be required for the cytotoxic activity. Among them, compound 14g, when administered intraperitoneally, showed potent antitumor activity against the malignant ascites caused by intraperitoneal inoculation of P388 cells in mice. This compound also showed high activity against a solid tumor Meth A mouse fibrosarcoma when administered both intraperitoneally and orally.