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Página 1 desde 20 resultados
Synthesis and biological activity of 3-(2, 8, 9-trioxa-aza-1-germatricyclo [3. 3. 3. 0] undecane-1-yl)-caffeic acid.
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The new germanium compound of caffeic acid, (1), has been obtained to compare anti-tumor activities with 3-(2, 8, 9-trioxa-aza-1-germatricyclo[3. 3. 3. 0]undecane-1-yl)-hydroxycinnamic acids which have been researched previously. Compound was prepared which mainly used caffeic acid, germanium
Anti-proliferative effects of diterpenoids from Sagittaria trifolia L. tubers on colon cancer cells by targeting the NF-κB pathway
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A new labdane-type diterpenoid, ent-19-ol-13-epi-manoyl oxide,19-undecane ester, together with ten known diterpenes, were isolated from the ethanolic crude extract of the fresh tubers of Sagittaria trifolia L. The chemical structures of these compounds were determined by extensive 2-D NMR
Chemical composition, cytotoxicity and molecular profiling of Cordia africana Lam. on human breast cancer cell line.
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Metabolic profiling of the hexane extract and essential oil of Cordia africana Lam., an economically important agroforestry species, was performed using GC-FID and GC-MS. Cytotoxicity was assessed in MCF-7 cancer cells using sulphorhodamine-B assay. Caspase-8, BcL-2 and Ki-67 levels were
A new phenanthrene derivative and two diarylheptanoids from the roots of Brassica rapa ssp. campestris inhibit the growth of cancer cell lines and LDL-oxidation.
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Brassica rapa ssp. campestris (Brassicaceae) is a conical, deep purple, edible root vegetable commonly known as a turnip. We initiated phytochemical and pharmacological studies to search for biological active compounds from the roots of B. rapa ssp. campestris. We isolated a novel phenanthrene
A small oxazine compound as an anti-tumor agent: a novel pyranoside mimetic that binds to VEGF, HB-EGF, and TNF-α.
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A novel pyranoside mimetic compound, DMBO (2-(2,6-difluorophenyl)-5-(4-methoxyphenyl)-1-oxa-3-azaspiro[5.5]undecane), was designed and synthesized. The sugar mimicking behavior of DMBO was addressed by its ability to bind several growth factors/cytokines such as vascular endothelial growth factor
An azaspirane derivative suppresses growth and induces apoptosis of ER-positive and ER-negative breast cancer cells through the modulation of JAK2/STAT3 signaling pathway.
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Persistent activation of signal transducer and activator of transcription 3 (STAT3) is associated with the progression of a range of tumors. In this report, we present the anticancer activity of 2-(1-(4-(2-cyanophenyl)1-benzyl‑1H-indol-3-yl)-5-(4-methoxy-phenyl)-1-oxa-3-azaspiro(5,5)undecane (CIMO)
Cocarcinogenic and tumor-promoting agents in tobacco carcinogenesis.
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A series of 21 tobacco smoke components and related compounds werere applied to mouse skin (50 female ICR/Ha Swiss mice/group) three times weekly with a low dose (5 mug/application) of benzo[a]pyrene (B[a]P). The test compounds were of five classes: aliphatic hydrocarbons, aromatic hydrocarbons,
Anti-Allergic and Anti-Inflammatory Effects of Undecane on Mast Cells and Keratinocytes.
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The critical roles of keratinocytes and resident mast cells in skin allergy and inflammation have been highlighted in many studies. Cyclic adenosine monophosphate (cAMP), the intracellular second messenger, has also recently emerged as a target molecule in the immune reaction underlying inflammatory
Gadolinium-Loaded Poly(N-vinylcaprolactam) Nanogels: Synthesis, Characterization, and Application for Enhanced Tumor MR Imaging.
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We report the synthesis of poly(N-vinylcaprolactam) nanogels (PVCL NGs) loaded with gadolinium (Gd) for tumor MR imaging applications. The PVCL NGs were synthesized via precipitation polymerization using the monomer N-vinylcaprolactam (VCL), the comonomer acrylic acid (AAc), and the degradable
Synthesis and biological activity of 3-(2, 8, 9-trioxa-aza-1-germatricyclo [3. 3. 3. 0]undecane-1-yl)-hydroxycinnamic acids.
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The new germanium compounds of cinnamic acid, RC(6)H(4)CHGe(OCH(2)CH(2))(3)NCH(2)COOH R=H (I), 2-OH (II), 3-OH (III), 4-OH (IV), have been obtained to study anti-tumor activities. Compounds (I-IV) were prepared by the electrophilic addition reaction and nucleophilic substitution reaction. Biological
Anti-angiogenic activity of Gynura segetum leaf extracts and its fractions.
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BACKGROUND
Gynura segetum is a popular medicinal plant in Indonesia and Malaysia, known to possess various medicinal properties especially for treatment of cancer, diabetes and hypertension.
OBJECTIVE
This study was carried out to evaluate the anti-angiogenic effect of Gynura segetum leaves extracts
On the role of low-energy electrons in the radiosensitization of DNA by gold nanoparticles.
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Four different gold nanoparticle (GNP) preparations, including naked GNPs and GNPs coated either with thiolated undecane (S-C(11)H(23)), or with dithiolated diethylenetriaminepentaacetic (DTDTPA) or gadolinium (Gd) DTDTPA chelating agents, were synthesized. The average diameters, for each type of
Hyperattenins L and M, two new polyprenylated acylphloroglucinols with adamantyl and homoadamantyl core structures from Hypericum attenuatum.
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Hyperattenins L (1) and M (2), two new benzoylated polyprenylated phloroglucinol derivatives possessing unusual adamantyl and homoadamantyl core structures, were isolated from the aerial parts of Hypericum attenuatum. Their structures were determined by extensive NMR spectroscopic methods. Compound
Trichiconlides CF, four new limonoids with 1,2-seco phragmalin-type carbon skeleton from the fruits of Trichilia connaroides.
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Phytochemical investigation of the fruits from Trichilia connaroides led to the isolation of four rare 1,2-seco phragmalin-type limonoids (1-4) with C-7/28 δ-lactone ring along with two known triterpenoids (5-6). An oxygen bridge between C-1 and C-2 formed an rare
Antiarthritic and suppressor cell inducing activity of azaspiranes: structure-function relationships of a novel class of immunomodulatory agents.
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Spirogermanium (1; 8,8-diethyl-N,N-dimethyl-2-aza-8- germaspiro[4.5]decane-2-propanamine dihydrochloride) is a potent cytotoxic agent in vitro which has demonstrated limited activity in experimental animal tumor models. Subsequently, it has been reported that spirogermanium has antiarthritic and
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