| abstract |
1,1,2-Triaryl-1-butene derivatives represented by general formula (I), [wherein R1 and R2 each represents a lower alkyl group, and one of R3 and R4 represents a lower alkyl group and the other represents a group represented by (II), (wherein R5 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom or -OPO(OH)2)], pharmacologically acceptable salts thereof, process for their preparation, and drugs for mammary cancer and anovulatory sterility containing them as effective ingredients. |