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germacranolide/leucemia
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9 resultados
Potentiation of 1,25-dihydroxyvitamin D(3)-induced differentiation of human promyelocytic leukemia cells into monocytes by costunolide, a germacranolide sesquiterpene lactone.
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Costunolide, a germacranolide sesquiterpene lactone that exists in several medicinal plants, is known to be a possible anti-cancer and chemopreventive agent for tumorigenesis. In this report, we investigated the effect of costunolide on cellular differentiation in the human promyelocytic leukemia
Potent induction of apoptosis by germacranolide sesquiterpene lactones on human myeloid leukemia cells.
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This paper studies the cytotoxic effect induced by four known natural sesquiterpene lactones (tatridin A, tamirin, reynosin, ineupatorolide A) and one synthetic derivative (tatridin A diacetate) on the myeloid leukemia cell lines HL-60 and U937. Tatridin A diacetate and ineupatorolide A were found
Sesquiterpenoids from the roots of Inula helenium inhibit acute myelogenous leukemia progenitor cells.
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One new eudesmane sesquiterpenoid, 11β-hydroxy-13-chloro-eudesm-5-en-12, 8-olide (1), was isolated from the roots of Inula helenium together with nine eudesmanolides (2-10) and one germacranolide (11). Their structures were elucidated on the basis of detailed spectroscopic analyses. All isolates
Antitumor agents XXXVIII: Isolation and structural elucidation of novel germacranolides and triterpenes from Elephantopus mollis.
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The ethanolic extract of Elephantopus mollis yielded three novel cytotoxic antitumor germacranolides, molephantin, molephantinin, and phantomolin. The extract also yielded three inactive known triterpenes, beta-amyrin acetate, lupeol acetate, and epifriedelanol, as well as stigmasterol. The
Cytotoxic germacranolide sesquiterpene from Inula cappa.
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A new germacranolide, inulacappolide (1), was isolated from the EtOH extract of the whole plant of Inula cappa along with 16 known compounds. The structure of inulacappolide was a rare 1(10)-saturated type of germacran-6,12-olide, identified as
Cytotoxic germacranolides and acyclic diterpenoides from the seeds of Carpesium triste.
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Four new highly oxygenated germacranolides (1, 4, 6, and 7) and four new acyclic diterpenes (8-11), along with three known germacranolides (2, 3, and 5), were isolated from the seeds of Carpesium triste. The structures of the new compounds were elucidated by spectroscopic methods including IR,
The germacranolide sesquiterpene lactone neurolenin B of the medicinal plant Neurolaena lobata (L.) R.Br. ex Cass inhibits NPM/ALK-driven cell expansion and NF-κB-driven tumour intravasation.
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BACKGROUND
The t(2;5)(p23;q35) chromosomal translocation results in the expression of the fusion protein NPM/ALK that when expressed in T-lymphocytes gives rise to anaplastic large cell lymphomas (ALCL). In search of new therapy options the dichloromethane extract of the ethnomedicinal plant
Antineoplastic agents, 178. Isolation and structure of lychnostatins 1 and 2 from the South American Lychnophora antillana.
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Bioassay-guided (P388 lymphocytic leukemia cell line) separation of a CH2Cl2/MeOH extract of Lychnophora antillana led to the isolation of two cytostatic (P-388, ED50 2.0 and 0.19 micrograms/ml, respectively) germacranolides designated lychnostatins 1 [1] and 2 [2]. Structural elucidation was based
Cytotoxic Activity of Germacrane-Type Sesquiterpene Lactones from Dimerostemma aspilioides
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The need for effective candidates as cytotoxic drugs that at the same time challenge cancer multidrug resistance encouraged a search for these in plants of central Argentina. Bioassay-guided fractionation of the cytotoxic extract from Dimerostemma aspilioides led to the isolation of the
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