Synthesis of N -substituted piperidine-4-(benzylidene-4-carboxylic acids) and evaluation as inhibitors of steroid-5α-reductase type 1 and 2
作者:Franck Picard、Eckhard Baston、Wolfgang Reichert、Rolf W. Hartmann
DOI:10.1016/s0968-0896(00)00070-5
日期:2000.6
The synthesis of N-substituted piperidine-4-(benzylidene-4-carboxylic acids) is described [benzoyl (1), benzyl (2), adamantanoyl (3), cyclohexanoyl (4), cyclohexylacetyl (5), diphenylacetyl (6), dicyclohexylacetyl (7), 2-propylpentanoyl (8), diphenylcarbamoyl (9). trimethylacetyl (10), 3,3-dimethylacryloyl (11), dicyclohexylacetyl derivative of the benzyl compound (12)]. Compounds were tested for inhibitory activity toward Scc-reductase isozymes 1 and 2 in human and rat. The test compounds inhibited 5 alpha-reductase, showing a broad range of inhibitory potencies. In rat, compounds 6 (IC50 = 3.44 and 0.37 mu M for type 1 and 2, respectively) and 9 (IC50 = 0.54 and 0.69 mu M for type 1 and 2, respectively) displayed the best inhibition toward both Isozymes. Compound 7 showed a strong inhibition toward type 2 human and rat enzyme (IC50 = 60 and 80 nM) but only a moderate activity versus type 1 enzyme (IC50 approximately 10 mu M for rat and human enzyme). In vivo, selected compounds reduced prostate weights in castrated testosterone treated rats. (C) 2000 Elsevier Science Ltd. All rights reserved.