This invention provides a progesterone receptor antagonist of formula 1 having the structure wherein, T is O, S, or absent; R 1 , and R 2 are each, independently, hydrogen, alkyl, substituted alkyl; or R 1 and R 2 are taken together form a ring and together contain —CH 2 (CH 2 ) n CH 2 —, —CH 2 CH 2 CMe 2 CH 2 CH 2 —, —O(CH 2 ) p CH 2 —, —O(CH 2 ) q O—, —CH 2 CH 2 OCH 2 CH 2 —, or —CH 2 CH 2 NR 7 CH 2 CH 2 —; n=1-5; p=1-4; q=1-4; R 3 is hydrogen, OH, NH 2 , alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, or COR A ; R A is hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, aminoalkyl, or substituted aminoalkyl; R 4 is hydrogen, halogen, CN, NH 2 , alkyl, substituted alkyl, alkoxy, substituted alkoxy, aminoalkyl, or substituted aminoalkyl; R 5 is hydrogen, alkyl, or substituted alkyl; R 6 is hydrogen, alkyl, substituted alkyl, or COR B ; R B is hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, aminoalkyl, or substituted aminoalkyl; R 7 is hydrogen or alkyl; or a pharmaceutically acceptable salt thereof.
1. A method of providing contraception in a female in need thereof, which comprises administering to a female an effective amount of a compound having the structure of formula 1:
wherein:
T is O;
R 1 and R 2 are alkyl;
R 3 is hydrogen;
R 4 is hydrogen;
R 5 is hydrogen;
R 6 is hydrogen, alkyl, substituted alkyl, or COR B ;
R B is hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, aminoalkyl, or substituted aminoalkyl;
or a pharmaceutically acceptable salt thereof.
2. The method according to claim 1 , wherein said compound is selected from the group consisting of:
5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-benzo[d][1,3]oxazin-6-yl)-1H-pyrrole-2-carbonitrile;
5-(4,4-Dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-methyl-1H-pyrrole-2-carbonitrile;
5-(4,4-Dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-ethyl-1H-pyrrole-2-carbonitrile;
tert-butyl-[2-cyano-5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1H-pyrrol-1-yl]-acetate;
[2-cyano-5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1H-pyrrol-1-yl]-acetic acid;
2-[2-cyano-5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1H-pyrrol-1-yl]-N-[2-(3-ethoxy-4-methoxyphenyl)ethyl]acetamide; and
5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)1-pentyl-1H-pyrrole-2-carbonitrile.
3. The method according to claim 1 , wherein R 1 and R 2 are CH 3 .
4. The method according to claim 1 , wherein R 6 is alkyl.
5. The method according to claim 4 , wherein R 6 is CH 3 .
6. The method according to claim 1 , wherein said compound is 5-(4,4-Dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-methyl-1H-pyrrole-2-carbonitrile.
7. The method according to claim 1 , wherein said effective amount is 0.02 μg/kg to 750 μg/kg.
8. A method of providing contraception in a female in need thereof, said method comprising administering to a female an effective amount of a compound selected from the group consisting of:
5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-prop-2-ynyl-1H-pyrrole-2-carbonitrile;
4-bromo-5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1-methyl-1H-pyrrole-2-carbonitrile;
tert-butyl-5-cyano-2-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-3-nitro-1H-pyrrole-1-carboxylate;
4-amino-5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1H-pyrrole-2-carbonitrile;
5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-3-nitro-1H-pyrrole-2-carbonitrile;
3-amino-5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1H-pyrrole-2-carbonitrile;
5-(4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1,3,4-trimethyl-1H-pyrrole-2-carbonitrile; and
4-bromo-(5-4,4-dimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)-1H-pyrrole-2-carbonitrile, or a pharmaceutically acceptable salt thereof.