6-Substituted 1H-quinolin-2-ones and 2-methoxy-quinolines: Synthesis and evaluation as inhibitors of steroid 5α reductases types 1 and 2
作者:Eckhard Baston、Anja Palusczak、Rolf W. Hartmann
DOI:10.1016/s0223-5234(00)01167-3
日期:2000.10
A Negishi-type coupling reaction between 6-bromo-2-methoxyquinoline (la) and various 4-bromo-N,N-dialkyl-benzamides gave access to 6-substituted 2-methoxy-quinolines 1-3 and 1H-quinolin-2-ones 4-12. Most of these compound proved to be inhibitors of steroid 5a reductases with activity and selectivity both being strongly dependent on the features of the heterocycle and the size of the N,N-dialkylamide substituent. The most active inhibitor for the human type 2 isozyme was 6-[4-(N,N-diisopropylcarbamoyl)phenyl]-1H-quinolin-2-one 4 (K-i 800 +/- 85 nM), showing mostly competitive inhibitory patterns. A type 1 selective inhibitor could be identified with 6-[4-(N,N-diisopropylcarbamoyl)phenyl]-N (5, IC50 510 nM). (C) 2000 Editions scientifiques et medicales Elsevier SAS.
5-Phenyl substituted 1-methyl-2-pyridones and 4′-substituted biphenyl-4-carboxylic acids. synthesis and evaluation as inhibitors of steroid-5α-reductase type 1 and 2
作者:Franck Picard、Tobias Schulz、Rolf W. Hartmann
DOI:10.1016/s0968-0896(01)00293-0
日期:2002.2
ferrocyanate of the 1-methyl-pyridinium salt. Inhibitors II (5-18) were obtained either by two successive Friedel-Craftsacylationsfrom biphenyl (5a-10a) followed by saponification to yield the corresponding carboxylic acids (5-10) or by Suzuki cross coupling reaction to give the 4'-substituted biphenyl-4-carbaldehydes 11a-18a. The latter compounds were subjected to a Lindgren oxidation to yield compounds