申请人:Ono Pharmaceutical Co., Ltd.
公开号:US04935240A1
公开(公告)日:1990-06-19
A benzoylaminophenoxybutanoic acid derivative of general formula: ##STR1## [wherein A represents oxygen atom, sulfur atom or sulfinyl (SO) group, R.sup.1 represents hydrogen atom or methyl group, R.sup.2 represents a group of the general formula: ##STR2## wherein B represents oxygen atom, sulfur atom or a group of general formula: NR" (wherein R" represents hydrogen atom or alkyl group of from 1 to 4 carbon atoms(s)), R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 represent, independently, hydrogen atom, alkyl group of from 1 to 4 carbon atom(s), halogen atom or trifluoromethyl group, m represents 0 or 1, n represents an integer of from 1 to 4, and R.sup.9 and R.sup.10 represent, independently, hydrogen atom, alkyl group of from 1 to 5 carbon atom(s) or a group of general formula: ##STR3## (wherein R.sup.12, R.sup.13, R.sup.14 and R.sup.15 represent, independently, hydrogen atom, alkyl group of from 1 to 4 carbon atom(s), halogen atom or trifluoromethyl group, and 1 represents an integer of from 1 to 4.). With the proviso that R.sup.9 and R.sup.10 do not represent hydrogen atoms at the same time.}.] or non-toxic salts thereof possess an inhibitory activity on 5.alpha.-reductase, and therefore be useful for treating and/or preventing agent for alopecia, acnes or prostatic hypertrophy.
一种苯甲酰氨基苯氧基丁酸衍生物的通式:##STR1## [其中A代表氧原子、硫原子或亚砜(SO)基团,R.sup.1代表氢原子或甲基基团,R.sup.2代表通式的基团:##STR2## 其中B代表氧原子、硫原子或通式的基团:NR"(其中R"代表1至4个碳原子的氢原子或烷基基团),R.sup.3、R.sup.4、R.sup.5、R.sup.6、R.sup.7和R.sup.8独立地代表氢原子、1至4个碳原子的烷基基团、卤原子或三氟甲基基团,m代表0或1,n代表1至4的整数,R.sup.9和R.sup.10独立地代表氢原子、1至5个碳原子的烷基基团或通式的基团:##STR3## (其中R.sup.12、R.sup.13、R.sup.14和R.sup.15独立地代表氢原子、1至4个碳原子的烷基基团、卤原子或三氟甲基基团,1代表1至4的整数)。但是,R.sup.9和R.sup.10不能同时代表氢原子。】或其非毒性盐具有对5α-还原酶的抑制活性,因此可用于治疗和/或预防脱发、痤疮或前列腺肥大的药物。