Modification of Estrone at the 6, 16, and 17 Positions: Novel Potent Inhibitors of 17β-Hydroxysteroid Dehydrogenase Type 1
作者:Gillian M. Allan、Harshani R. Lawrence、Josephine Cornet、Christian Bubert、Delphine S. Fischer、Nigel Vicker、Andrew Smith、Helena J. Tutill、Atul Purohit、Joanna M. Day、Mary F. Mahon、Michael J. Reed、Barry V. L. Potter
DOI:10.1021/jm050830t
日期:2006.2.1
androgens and estrogens at the 17 position. The 17beta-HSD type 1 enzyme (17beta-HSD1) catalyzes the reduction of estrone to estradiol and is expressed in malignant breast cells. Inhibitors of this enzyme thus have potential as treatments for hormone dependent breast cancer. Here we report the syntheses and biological evaluation of novel inhibitors based on the estrone or estradiol template. These have
Scope and Mechanism of the Ruthenium-Catalyzed Deaminative Coupling Reaction of Enones with Amines via Regioselective C<sub>α</sub>–C<sub>β</sub> Bond Cleavage
作者:Dulanjali S. Thennakoon、Marat R. Talipov、Chae S. Yi
DOI:10.1021/acs.organomet.3c00321
日期:2023.10.9
A highly regioselective C–C bond cleavage method of enones has been devised from the ruthenium-catalyzed deaminative coupling reaction with simple amines. The analogous catalytic coupling reaction of enones with anilines has led to a regioselective Cα–Cβ bond cleavage of enones in forming N-alkylanilines and 2,4-disubstituted quinolines. The reaction profile study showed the formation of a β-aminoimine
The 1,3-dipolar cycloaddition of azomethine ylides generated in situ from the reaction of isatins or acenaphthylene-1,2-dione and 1,3-thiazolane-4-carboxylic acid to various exocyclic dipolarophiles synthesized from estrone afforded a library of novel C-16 Spiro oxindole or acenaphthylene-1-one - 7-(aryl)tetrahydro-1H-pyrrolo[1,2-c][1,3]thiazole - estrone hybrid heterocycles. These reactions occur regio- and stereo-selectively affording a single isomer of the Spiro estrones in excellent yields with the formation of two C-C and one C-N bonds along with the generation of four new contiguous stereo-centers in a single step. (C) 2014 Elsevier Inc. All rights reserved.
Synthesis of monomeric and dimeric steroids containing [1,2,4]triazolo[1,5-a]pyrimidines
作者:Ailed Arenas-González、Luis Antonio Mendez-Delgado、Penélope Merino-Montiel、José M. Padrón、Sara Montiel-Smith、José Luis Vega-Báez、Socorro Meza- Reyes
DOI:10.1016/j.steroids.2016.09.014
日期:2016.12
The synthesis of several monomeric and dimeric steroidal [1,2,4]triazolo[1,5-a]pyrimidines (TPs) derived from steroids are described. These derivatives were prepared from α,β-unsaturated carbonyl compounds through a Claisen Schmidt condensation and rearrangement of the spiro moiety followed by a cycloaddition with 3-amino-1,2,4-triazole. The antiproliferative activity of compounds 7, 13-15 was tested