- A process for the preparation of intermediates palestinian multi-past fragrance acetate
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The invention discloses a method for preparing a bazedoxifene acetate intermediate. The preparation method comprises the following steps: 1, condensing 4-hydroxybenzaldehyde S01 and alkylate S02 to prepare a 4-formyl phenoxy derivative M01; 2, performing
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- In vitro bioactivation of bazedoxifene and 2-(4-hydroxyphenyl)-3-methyl-1H- indol-5-ol in human liver microsomes
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Bazedoxifene is a selective estrogen receptor modulator (SERM) that has been developed for use in post-menopausal osteoporosis. However, it contains a potentially toxic 5-hydroxy-3-methylindole moiety. Previous studies on the 5-hydroxyindole and the 3-alkylindole-containing drugs indometacine, zafirlukast and MK-0524 structural analogs have shown that they are bioactivated by cytochrome P450s through a dehydrogenation process to form quinoneimine or 3-methyleneindolenine electrophilic species. In the present study, bazedoxifene was synthesized and then evaluated, together with raloxifene and 2-(4-hydroxyphenyl)-3-methyl-1H-indol-5-ol (13), a 3-methyl-5-hydroxyindole- based structural fragment of bazedoxifene, for its ability to form reactive electrophilic species when incubated with human liver microsomes (HLMs) or recombinant CYP isozymes. We showed that bazedoxifene was bioactivated only in trace amounts with recombinant CYP isozymes. In contrast, the N-dealkylated fragment of bazedoxifene (2-(4-hydroxyphenyl)-3-methyl-1H-indol-5-ol) was bioactivated in considerable amounts to an electrophilic intermediate, which was trapped with glutathione and identified by LC-MS/MS. This suggests that bazedoxifene would require initial N-dealkylation, which could subsequently lead to the formation of the reactive intermediate. However, such an N-dealkylated metabolite of bazedoxifene was not detected after the incubation of bazedoxifene in HLM or recombinant CYP isozymes.
- Lu?in, Tina Trdan,Toma?i?, Tihomir,Trontelj, Jurij,Mrhar, Ale?,Peterlin-Ma?i?, Lucija
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experimental part
p. 8 - 15
(2012/07/28)
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- 2-phenyl-1-[4-(2-aminoethoxy)-benzyl]-indole and estrogen formulations
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The present invention relates to new formulations containing one or more estrogens and 2-Phenyl-1-[4-(2-Aminoethoxy)-Benzyl]-Indole compounds which are useful as estrogenic agents, as well as pharmaceutical compositions and methods of treatment utilizing these compounds, which have the general structures below:
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- 2-PHENYL-1-[4-(2-AMINOETHOXY)-BENZYL]-INDOLES AS ESTROGENIC AGENTS
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The present invention relates to new 2-Phenyl-1-[4-(2-Aminoethoxy)-Benzyl]-Indole compounds which are useful as estrogenic agents, as well as pharmaceutical compositions and methods of treatment utilizing these compounds, which have the general structures below: STR1
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