Discovery of a novel hybrid from finasteride and epristeride as 5α-reductase inhibitor
摘要:
Finasteride and epristeride both inhibit 5 alpha-reductase with high potency via competitive and non-competitive mechanism, respectively. A new hybrid of finasteride and epristeride was designed as a new 5a-reductase inhibitor based on combination principles in medicinal chemistry. Human 5 beta-reductase was chosen as a plausible surrogate of 5 alpha-reductase type II and the results indicate that although the hybrid compound possesses the main bulk of epristeride, its inhibitory mechanism is same as of finasteride. The hybrid turned out to be a potent 5 alpha-reductase inhibitor in low IC50 ranges. Published by Elsevier Ltd.
Synthesis of 17-oxoandrosta-3,5-dien-3-methyl Sulfonate as Stable Analog of Dehydroepiandrosterone Sulfate
摘要:
The synthesis of 17-oxoandrosta-3,5-dien-3-methyl sulfonate 3, a stable analog of memory-enhancing neurosteroid dehydroepiandrosterone sulfate, is described. (C) 1998 by Elsevier Science Inc.
Palladium-catalyzed carbonylation of enol triflates. A novel method for one-carbon homologation of ketones to α,β-unsaturated carboxylic acid derivatives
作者:Sandro Cacchi、Enrico Morera、Giorgio Ortar
DOI:10.1016/s0040-4039(00)98525-3
日期:1985.1
Ketones can be homologated to α,gb-unsaturated esters or amides via their enoltriflates by a palladium-catalyzed reaction with carbon monoxide and alcohols or amines.