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Antiestrogenic effects of Z-1, 1-dichloro-2,3 diphenyl-2-(4-methoxyphenyl)cyclopropane(5a) on human breast cancer cells in culture.

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Compound 5a ([Z]-1, 1-Dichloro-2,3 diphenyl-2-(4-methoxyphenyl)cyclopropane) is a novel cyclopropyl compound which was shown to be a pure antiestrogen. In the present study, the antiproliferative activity of 5a was examined on estrogen receptor (ER)-positive MCF-7 and ER-negative MDA-MB-231 human

The influence of a novel cyclopropyl antiestrogen (compound 7a) on human breast cancer cells in culture.

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Compound 7a ([Z]-1,1,-dichloro-2,3-diphenyl-2-(4-(2- dimethylamino)ethoxy)phenyl) cyclopropane, dihydrogen citrate salt) is a novel cyclopropyl antiestrogen which was shown to be an estrogen antagonist without estrogen agonist activity. The antiproliferative activity of 7a was examined on estrogen

The influence of antiestrogens on the release of plasminogen activator (uPA) by MDA-MB-231 and MCF-7 breast cancer cells.

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Plasminogen activators are known to be involved in the metastatic spread of breast cancer. In the present study we examined the effects of antiestrogens [Analog II (1,1-dichloro-cis-2,3-diphenyl cyclopropane) (AII), ICI-182,780 (ICI) and tamoxifen (TAM)], on the in vitro release of uPA from estrogen

The influence of antiestrogens on pS2 and cathepsin D mRNA induction in MCF-7 breast cancer cells.

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Tamoxifen, although widely used in the treatment of estrogen-dependent tumors, is a partial estrogen agonist producing undesirable effects in breast cancer patients. ICI 182,780 a steroidal antiestrogen displays pure antagonist activity which is due to its ability to prevent dimerization of the

Synthesis and biological evaluation of spiro[cyclopropane-1,3'-indolin]-2'-ones as potential anticancer agents.

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Libraries of spiro[cyclopropane-1,3'-indolin]-2'-ones were synthesized and evaluated for their biological activity against five different human cancer cell lines HT-29 (colon cancer), DU-145 (prostate cancer), Hela (cervical cancer), A-549 (Lung cancer), and MCF-7 (breast cancer). Many compounds of

A comparison of the antitumor activity of two triarylcyclopropyl antiestrogens (compounds 4d and 5c) on human breast cancer cells in culture.

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Compound 4d ((E)- and (Z)-1,1-Dichloro-2-[4-(benzyloxy)-phenyl]2,3-bis(4-methoxyphenyl) cyclopropane) and compound 5c ((Z)-1,1-Dichloro-2-[4-(benzyloxy)-phenyl]- 2-(4-methoxyphenyl)-3-phenylcyclopropane) are two members of a novel series of triarylcyclopropyl compounds which have been shown to be

Antitumor mechanism of action of a cyclopropyl antiestrogen (compound 7b) on human breast cancer cells in culture.

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Cyclopropyl compound 7b [(Z)-1,1-dichloro-2-[4-[2-(dimethylamino)ethoxy] phenyl]-2-(4-methoxyphenyl)-3-cyclopropane] has been shown to be a pure antiestrogen in mouse uterine tissue. Antitumor activity was examined by evaluating the influence of 7b on the proliferation, estrogen receptor (ER)

Synthesis and biological evaluation of 1,1-dichloro-2,3-diarylcyclopropanes as antitubulin and anti-breast cancer agents.

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Z-1,1-Dichloro-2,3-diphenylcyclopropane (1) is an effective anti-breast cancer agent in rodents and in cell culture. We recently determined that 1 inhibits tubulin assembly in vitro and causes microtubule loss in breast cancer cells, leading to accumulation in the G2/M portion of the cell cycle.

The discovery of Polo-like kinase 4 inhibitors: design and optimization of spiro[cyclopropane-1,3'[3H]indol]-2'(1'H).ones as orally bioavailable antitumor agents.

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Polo-like kinase 4 (PLK4), a unique member of the polo-like kinase family of serine-threonine kinases, is a master regulator of centriole duplication that is important for maintaining genome integrity. Overexpression of PLK4 is found in several human cancers and is linked with a predisposition to

(Z)-1,1-dichloro-2-(4-benzyloxyphenyl)-2,3-bis(4-methoxyphenyl)cyclopropane: the synthesis and enantiomeric separation of an antitumor agent.

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(Z)-1,1-dichloro-2-(4-benzyloxyphenyl)-2,3-bis(4-methoxyphenyl)cyc lopropane (5), a potential antitumor agent designed to treat breast cancer, was prepared in three steps. A stereospecific palladium-catalyzed cross coupling reaction which provided the intermediate (Z)-triaryl alkene 4 was a crucial

Synthesis and biological evaluation of a series of 1,1-dichloro-2,2,3-triarylcyclopropanes as pure antiestrogens.

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A series of 1,1-dichloro-2,2,3-triarylcyclopropanes (DTACs) was synthesized and evaluated as pure antiestrogens. Addition of 4-methoxy- or 4-(benzyloxy)phenyl Grignard reagents to p-methoxy, p-benzyloxy, or unsubstituted deoxybenzoins, followed by dehydration of the resulting carbinols produced a

Design, stereoselective synthesis, and biological evaluation of novel tri-cyclic compounds as inhibitor of apoptosis proteins (IAP) antagonists.

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We recently reported the discovery of octahydropyrrolo[1,2-a]pyrazine A as a lead compound for an inhibitor of apoptosis proteins (IAP) antagonist. To develop IAP antagonists with favorable PK profiles, we designed novel tri-cyclic compounds, octahydro-1H-cyclopropa[4,5]pyrrolo[1,2-a]pyrazines 1 and

The mutagenic potential of antiestrogens at the HPRT locus in V79 cells.

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Tamoxifen, a nonsteroidal antiestrogen is widely used in the treatment of breast cancer. Although clearly of clinical value, it produces adverse side effects associated with its estrogen agonist activity. This has led to the development of antiestrogens with less estrogen agonist activity. Analog II

Exploring new chemical functionalities to improve aromatase inhibition of steroids.

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In this work, new potent steroidal aromatase inhibitors both in microsomes and in breast cancer cells have been found. The synthesis of the 3,4-(ethylenedioxy)androsta-3,5-dien-17-one (12), a new steroid containing a heterocycle dioxene fused in the A-ring, led to the discovery of a new reaction for

3,20-Dihydroxy-13α-19-norpregna-1,3,5(10)-trienes. Synthesis, structures, and cytotoxic, estrogenic, and antiestrogenic effects.

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New 3,20-dihydroxy-13α-19-norpregna-1,3,5(10)-trienes were synthesized. The effects of these compounds on breast cancer cells and ERα activation were investigated. The scaffold of compounds containing the six-membered ring D' annulated at 16α,17α-positions was constructed via the Lewis acid

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Herbal & Natural Medicine

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cyclopropane/meme kanseri

Antiestrogenic effects of Z-1, 1-dichloro-2,3 diphenyl-2-(4-methoxyphenyl)cyclopropane(5a) on human breast cancer cells in culture.

The influence of a novel cyclopropyl antiestrogen (compound 7a) on human breast cancer cells in culture.

The influence of antiestrogens on the release of plasminogen activator (uPA) by MDA-MB-231 and MCF-7 breast cancer cells.

The influence of antiestrogens on pS2 and cathepsin D mRNA induction in MCF-7 breast cancer cells.

Synthesis and biological evaluation of spiro[cyclopropane-1,3'-indolin]-2'-ones as potential anticancer agents.

A comparison of the antitumor activity of two triarylcyclopropyl antiestrogens (compounds 4d and 5c) on human breast cancer cells in culture.

Antitumor mechanism of action of a cyclopropyl antiestrogen (compound 7b) on human breast cancer cells in culture.

Synthesis and biological evaluation of 1,1-dichloro-2,3-diarylcyclopropanes as antitubulin and anti-breast cancer agents.

The discovery of Polo-like kinase 4 inhibitors: design and optimization of spiro[cyclopropane-1,3'[3H]indol]-2'(1'H).ones as orally bioavailable antitumor agents.

(Z)-1,1-dichloro-2-(4-benzyloxyphenyl)-2,3-bis(4-methoxyphenyl)cyclopropane: the synthesis and enantiomeric separation of an antitumor agent.

Synthesis and biological evaluation of a series of 1,1-dichloro-2,2,3-triarylcyclopropanes as pure antiestrogens.

Design, stereoselective synthesis, and biological evaluation of novel tri-cyclic compounds as inhibitor of apoptosis proteins (IAP) antagonists.

The mutagenic potential of antiestrogens at the HPRT locus in V79 cells.

Exploring new chemical functionalities to improve aromatase inhibition of steroids.

3,20-Dihydroxy-13α-19-norpregna-1,3,5(10)-trienes. Synthesis, structures, and cytotoxic, estrogenic, and antiestrogenic effects.

Bilim tarafından desteklenen en eksiksiz şifalı otlar veritabanı

The discovery of Polo-like kinase 4 inhibitors: design and optimization of spiro[cyclopropane-1,3'[3H]indol]-2'(1'H).ones as orally bioavailable antitumor agents.