Synthesis and biological evaluation of novel unsaturated carboxysteroids as human 5α-reductase inhibitors: A legitimate approach
摘要:
In the present study, novel steroidal 17a-substituted 3-cyano-17a-aza-D-homo-3,5-androstadien-17-ones (12-19) and 17a-substituted 17-oxo-17a-aza-D-homo-3,5-androstadien-3-oic acids (20-26) were synthesized from dehydroepiandrosterone acetate (6) along with 17-oxo-19-nor-3,5-androstadien-3-oic acid (30) through a multistep synthesis. Compounds were evaluated for their in vitro 5 alpha-reductase inhibitory activity by measuring the conversion of PHI androstenedione in human embryonic kidney (HEK) cells. In vivo 5 alpha-reductase inhibitory activity was also determined using rat prostate weighing method. Compounds 21-23 and 25 showed potent inhibition of 5a-reductase II enzyme with IC50 values of 54.1 +/- 9.5, 22.1 +/- 2.4, 72.8 +/- 2.3 and 26.5 +/- 4.4 nM respectively as compared to Finasteride (30.3 nM) along with a significant (p < 0.05) reduction in rat prostate weight. (C) 2012 Elsevier Masson SAS. All rights reserved.