piperidine/meme kanseri

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Synthesis of new N,N'-bis[1-aryl-3-(piperidine-1-yl)propylidene]hydrazine dihydrochlorides and evaluation of their cytotoxicity against human hepatoma and breast cancer cells.

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N,N'-Bis[1-aryl-3-(piperidine-1-yl)propylidene]hydrazine dihydrochlorides were synthesized by the reaction of 2 mols of 1-aryl-3-(piperidine-1-yl)-1-propanone hydrochlorides with 1 mol of hydrazine hydrate. Aryl part was C₆H₅ (P1), 4-CH₃C₆H₄ (P2), 4-CH₃OC₆H₄ (P3), 4-HOC₆H₄ (P4), 4-ClC₆H₄ (P5),

New piperidine derivative DTPEP acts as dual-acting anti-breast cancer agent by targeting ERα and downregulating PI3K/Akt-PKCα leading to caspase-dependent apoptosis.

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OBJECTIVE In our ongoing studies to develop ER targeting agents, we screened for dual-acting molecules with a hypothesis that a single molecule can also target both ER positive and negative groups of breast cancer. METHODS 1-(2-(4-(Dibenzo[b,f]thiepin-10-yl)phenoxy)ethyl)piperidine (DTPEP) was

Radioiodination and preclinical evaluation of 4-benzyl-1-(3-[125I]-iodobenzylsulfonyl)piperidine as a breast tumor imaging tracer in mouse.

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OBJECTIVE 4-Benzyl-1-(3-iodobenzylsulfonyl)piperidine, 4-B-IBSP, has shown high-binding affinity to both sigma (σ) receptors in our previous work. In current study, radiolabeling and preclinical evaluation of 4-benzyl-1-(3-[125I]-iodobenzylsulfonyl)piperidine, 4-B-[125I]IBSP, in human ductal breast

Endocrine, pharmacokinetic and clinical studies of the aromatase inhibitor 3-ethyl-3-(4-pyridyl)piperidine-2,6-dione ('pyridoglutethimide') in postmenopausal breast cancer patients.

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The aromatase inhibitor, 'pyridoglutethimide' (PyG), has been shown previously to suppress serum oestrogen levels in postmenopausal breast cancer patients and to achieve clinical responses at a dose of 500 mg twice daily (b.d.). This report gives the results of a detailed pharmacokinetic and

Characterisation of metabolites of 3-ethyl-3-(4-pyridyl)-piperidine-2,6-dione, a potential breast cancer drug.

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The identification of metabolites from the pyridylglutarimide 3-ethyl-3-(4-pyridyl)piperidine-2,6-dione (PG, Rogletimide) was achieved using liquid chromatography-mass spectrometry with a thermospray interface (LC-TSP-MS). The urinary metabolites include PG N-oxide, the products of 4- and

Pharmacokinetics and pharmacodynamics of the aromatase inhibitor 3-ethyl-3-(4-pyridyl)piperidine-2,6-dione in patients with postmenopausal breast cancer.

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The pyridylglutarimide 3-ethyl-3-(4-pyridyl)-piperidine-2,6-dione (PyG) is a novel inhibitor of aromatase that was shown to cause effective suppression of plasma oestradiol levels in postmenopausal patients. In four patients receiving oral doses of PyG (500 mg) twice daily for 3-4 days, oestradiol

Aromatase inhibitors. Synthesis and evaluation of mammary tumor inhibiting activity of 3-alkylated 3-(4-aminophenyl)piperidine-2,6-diones.

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The synthesis and biological evaluation of 3-alkyl-substituted 3-(4-aminophenyl)piperidine-2,6-diones as inhibitors of estrogen biosynthesis are described [H (1), methyl (2), ethyl (3), n-propyl (4), isopropyl (5), n-butyl (6), isobutyl (7), sec-butyl (8), n-pentyl (9), isopentyl (10), 2-methylbutyl

Lobeline, a piperidine alkaloid from Lobelia can reverse P-gp dependent multidrug resistance in tumor cells.

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Multidrug resistance (MDR) can limit efficacy of chemotherapy. The best studied mechanism involves P-gp (P-glycoprotein) mediated drug efflux. This study focuses on MDR reversal agents from medicinal plants, which can interfere with P-gp. Rhodamine 123 accumulation assay and flow cytometry analysis

Design and synthesis of piperidine derivatives as novel human heat shock protein 70 inhibitors for the treatment of drug-resistant tumors.

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HSP70 is a potential target for tumour treatment. HSP70 plays significant roles in several biological processes, including the regulation of apoptosis. In this study, piperidine derivatives were designed as novel HSP70 inhibitors based on virtual fragment screening performed in Dock 4.0, Discovery

Crystallographic and molecular modeling studies on 3-ethyl-3-(4-pyridyl)piperidine-2,6-dione and its butyl analogue, inhibitors of mammalian aromatase. Comparison with natural substrates: prediction of enantioselectivity for N-alkyl derivatives.

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Inhibitors of the cytochrome P450 enzyme aromatase, which is involved in the biosynthesis of estrogens from androgens, are of proven utility in the treatment of hormone-dependent breast cancer. The determination of the crystal structure of one such inhibitor,

The redox status of human breast cancer cell lines (MCF-7 and MDA-MB231) treated with novel dinuclear berenil-platinum(II) complexes.

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This study compared the effects of cisplatinum and novel berenil-platinum(ll) complexes on the redox status of breast cancer cells that were estrogen receptor-positive (MCF-7) or estrogen receptor-negative (MDA-MB231). Both cell lines were treated with cisplatinum or the following

A concise diastereoselective approach to enantioenriched substituted piperidines and their in vitro cytotoxicity evaluation.

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A library of diversely stereo-oriented, highly substituted 2,6-cis piperidine derivatives were synthesized, and evaluated for their anticancer activity in cancer cells that included A549 (lung cancer, CCL-185), MCF7 (breast cancer (HTB-22), DU145 (prostate cancer (HTB-81), and HeLa (cervical cancer,

Anticancer activity of novel thiophenes containing a biological active diphenylsulfone, diazepin, piperidine, oxazepine, acryladehyde and sulfonamide moieties.

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A variety of thiophene derivatives bearing diphenylsulfone 3,4, diazepines 5b, 6b, phenylamino 7, piperidine 8, benzylpiperidine 9, oxazepines 10b, 11b, acrylaldehydes 12-14 and benzeonesulfanamide 15 were synthesized. some newly synthesized compounds were evaluated for their in vitro cytotoxic

Synthesis and preliminary biological evaluation of new carbon-11 labeled tetrahydroisoquinoline derivatives as SERM radioligands for PET imaging of ER expression in breast cancer.

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The estrogen receptors (ERs) are attractive targets in the treatment of breast cancer and the development of receptor-based breast cancer imaging agents for diagnostic use in biomedical imaging technique positron emission tomography (PET). Tetrahydroisoquinoline derivatives are a class of selective

Synthesis and structure-activity relationships of beta- and alpha-piperidine sulfone hydroxamic acid matrix metalloproteinase inhibitors with oral antitumor efficacy.

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alpha-Piperidine-beta-sulfone hydroxamate derivatives were explored that are potent for matrix metalloproteinases (MMP)-2, -9, and -13 and are sparing of MMP-1. The investigation of the beta-sulfones subsequently led to the discovery of hitherto unknown alpha-sulfone hydroxamates that are superior

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Herbal & Natural Medicine

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