Synthesis and biological evaluation of 13α-estrone derivatives as potential antiproliferative agents
摘要:
13 alpha-Estrone derivatives containing various substituents on C-3 and C-17 were synthesized, and evaluated by means of MU assays for in vitro antiproliferative activity against a panel of human adherent cancer cell lines (HeLa, MCF-7, A2780 and A431). Compounds with N-benzyltriazolylmethoxy moieties on C-3 proved to be more potent than their 3-hydroxy or 3-ether counterparts. Some triazoles exerted substantial cytostatic effects against particular tumor cell lines, with submicromolar IC50 values. (C) 2016 Elsevier Inc. All rights reserved.
mixture of 10β-fluoroestra-1,4-dien-3-one and 10β-chloroestra-1,4-dien-3-one as the main products. The potential inhibitory action of the 10-fluoro- or 10-chloroestra-1,4-dien-3-one products on human aromatase was investigated via in vitro radiosubstrate incubation. The classical estrane conformation with trans ring anellations and a 13β-methyl group seems to be crucial for the inhibition of the enzyme
Synthesis and structure–activity relationships of 2- and/or 4-halogenated 13<b><i>β</i></b>- and 13α-estrone derivatives as enzyme inhibitors of estrogen biosynthesis
electrophile triggers. Substitutions occurred at positions C-2 and/or C-4. The potential inhibitory action of the halogenated estrones on human aromatase, steroid sulfatase, or 17β-hydroxysteroid dehydrogenase 1 activity was investigated via in vitro radiosubstrate incubation. Potent submicromolar or low micromolar inhibitors were identified with occasional dual or multiple inhibitoryproperties. Valuable structure-activity
Butenandt; Wolff; Karlson, Chemische Berichte, 1941, vol. 74, p. 1308,1311
作者:Butenandt、Wolff、Karlson
DOI:——
日期:——
Transition metal-catalysed A-ring C–H activations and C(sp<sup>2</sup>)–C(sp<sup>2</sup>) couplings in the 13α-oestrone series and <i>in vitro</i> evaluation of antiproliferative properties
arylations. 2-(4-Substituted) phenyl derivatives were synthesised via Pd-catalysed, microwave-assisted C–H activation reactions. An efficient, one-pot, tandem methodology was elaborated for the introduction of the carbamoyl or pivaloyl group followed by regioselective C-2-arylation and subsequent removal of the directing group. The antiproliferative properties of the novel 13α-oestrone derivatives were
13 alpha-Estrone derivatives containing various substituents on C-3 and C-17 were synthesized, and evaluated by means of MU assays for in vitro antiproliferative activity against a panel of human adherent cancer cell lines (HeLa, MCF-7, A2780 and A431). Compounds with N-benzyltriazolylmethoxy moieties on C-3 proved to be more potent than their 3-hydroxy or 3-ether counterparts. Some triazoles exerted substantial cytostatic effects against particular tumor cell lines, with submicromolar IC50 values. (C) 2016 Elsevier Inc. All rights reserved.