Compounds of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 have any of the values defined in the specification, and their pharmaceutically acceptable salts, are inhibitors of aromatase, and are useful for treating diseases such as breast cancer, in mammals. Also disclosed are pharmaceutical compositions, processes for preparing compounds of formula (I) and intermediates useful for preparing compounds of formula I.
6β-Propynyl-Substituted Steroids: Mechanism-Based Enzyme-Activated Irreversible Inhibitors of Aromatase
作者:Abraham Akkani、Germana Paterlini、William B. Gleason、William H. Ojala、Yusuf J. Abul-Hajj
DOI:10.1021/jm970325z
日期:1997.9.1
corresponding 6 alpha-propargyl isomers 3 and 4. Inhibitoryactivity of the synthesized compounds was assessed using a human placental microsomal preparation as the enzyme source and [1 beta-3H]-4-androstenedione as substrate. Under initial velocity assay condition of low product formation, the inhibitors demonstrated potent inhibition of aromatase, with apparent KiS ranging from 10 to 66 nM, with