Discovery of substituted 3-(phenylamino)benzoic acids as potent and selective inhibitors of type 5 17β-hydroxysteroid dehydrogenase (AKR1C3)
摘要:
Aldo-keto reductase 1C3 (AKR1C3) also known as type 5 17 beta-hydroxysteroid dehydrogenase has been implicated as one of the key enzymes driving the elevated intratumoral androgen levels observed in castrate resistant prostate cancer (CRPC). AKR1C3 inhibition therefore presents a rational approach to managing CRPC. Inhibitors should be selective for AKR1C3 over other AKR1C enzymes involved in androgen metabolism. We have synthesized 2-, 3-, and 4-(phenylamino)benzoic acids and identified 3-(phenylamino) benzoic acids that have nanomolar affinity and exhibit over 200-fold selectivity for AKR1C3 versus other AKR1C isoforms. The AKR1C3 inhibitory potency of the 4'-substituted 3-(phenylamino)benzoic acids shows a linear correlation with both electronic effects of substituents and the pK(a) of the carboxylic acid and secondary amine groups, which are interdependent. These compounds may be useful in treatment and/or prevention of CRPC as well as understanding the role of AKR1C3 in endocrinology. (C) 2011 Elsevier Ltd. All rights reserved.
The invention relates to a compound of the formula I
in which:
R
1
represents, independently of each other, a halogen atom; an aliphatic hydrocarbon-based group optionally substituted and/or optionally interrupted by one or more oxygen or sulfur atoms; a nitro group; a cyano group; an amino group; a mono- or dialkylamino group; an alkylcarbonyl group; a carboxyl group; an alkylcarbonylamino group; an alkylsulfonyl group;
R
2
represents, independently of each other, a cyano group; a hydroxyl group, an alkylcarbonyl group; a carboxyl group; an alkoxycarbonyl group; an unsubstituted amide group; or a linear or branched alkyl group substituted by a cyano, hydroxyl, carboxyl, alkoxycarbonyl or unsubstituted amide group; i and j independently being 1 to 5,
with the exclusion of the compound for which i and j=1 and R
1
=carboxyl and R
2
=alkoxycarbonyl or R
1
=CF
3
and R
2
=carboxyl, and also the pharmaceutically acceptable derivatives, salts, solvates and stereoisomers thereof, including mixtures thereof in all proportions.
The invention relates to compounds of the formula (I) in which: i and j=1; R
1
is in position 3 or 4 on the phenyl ring and represents a cyano group, an alkoxy group substituted by halogen, a thioalkyl group, an alkylcarbonyl group or an alkylsulfonyl group; and R
2
represents a carboxyl group, an aikoxycarbonyl group, an alkylcarbonyl group, an unsubstituted amide group or a linear or branched alkyl group substituted by a cyano, hydroxyl, cabboxyl, aikoxycarbonyl or unsubstituted amide group; and also the pharmaceutically acceptable derivatives, salts, solvates and stereoisomers thereof, including mixtures thereof in all proportions.
Bifunctional AKR1C3 Inhibitors/Androgen Receptor Modulators and Methods of Use Thereof
申请人:The Trustees of The University of Pennsylvania
公开号:US20140107085A1
公开(公告)日:2014-04-17
The invention includes compositions comprising selective AKR1C3 inhibitors. The invention also includes compositions comprising bifunctional AKR1C3 inhibitors and selective androgen receptor modulators. The invention further includes methods of treatment using the compositions of the invention.
Bifunctional AKR1C3 inhibitors/androgen receptor modulators and methods of use thereof
申请人:The Trustees of the University of Pennsylvania
公开号:US10071953B2
公开(公告)日:2018-09-11
The invention includes compositions comprising selective AKR1C3 inhibitors. The invention also includes compositions comprising bifunctional AKR1C3 inhibitors and selective androgen receptor modulators. The invention further includes methods of treatment using the compositions of the invention.