(diethylamino)sulphur trifluoride (DAST) with 3,19-dioxoandrost-4-en-17β-yl benzoate (5). A novel rearrangement product (7) was also produced in this reaction. Compound (2) and its 4-hydroxy derivative (3; R = H) inhibited human placental aromatase in vitro, but were not as potent as 4-hydroxyandrost-4-ene-3,17- dione (1).
已设计出一条新的19,19-difluoroandrost-4-ene-3,17-dione(2)路线,其中关键步骤是(
二乙基氨基)三
氟化
硫(
DAST)与3,19-dioxoandrost- 4-en-17β-
苯甲酸酯(5)。在该反应中还产生了新的重排产物(7)。化合物(2)及其
4-羟基衍
生物(3 ; R = H)在体外抑制人胎盘芳香酶,但不如
4-羟基雄烷-4-烯-3,17-二酮(1)强。