| 摘要 |
1323383 A 13-ethyl-#<SP>4,9</SP> steroid ROUSSELUCLAF 19 April 1971 [3 March 1970] 22970/71 Addition to 1127749 Heading C2U The invention comprises 13#-ethyl-17α- methyl - 18,19 - dinorpregna - 4,9 - diene - 3,20- dione and its preparation by oxidation of the corresponding 20α- or 20#-hydroxy compound or a mixture of these two isomers. The inventive compound is stated to possess antigonadotrophic, antiestrogenic, antiandrogenic and progestomimetic activities, and may be made up with carriers into pharmaceutical compositions for oral, parenteral, topical and rectal administration. |
