cephalotaxine/lösemi

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Cephalotaxine esters in the treatment of acute leukemia. A preliminary clinical assessment.

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Treatment of chloroquine-resistant malaria with esters of cephalotaxine: homoharringtonine.

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The esters of cephalotaxine-harringtonine, homoharringtonine and deoxyharringtonine--have been reported by both Chinese and American oncologists as useful in the treatment of human nonlymphoblastic leukaemias and selected solid tumours of the head and neck. We report our results with

Strain-release rearrangement of N-vinyl-2-arylaziridines. Total synthesis of the anti-leukemia alkaloid (-)-deoxyharringtonine.

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Deoxyharringtonine (1) is among the most potent of the anti-leukemia alkaloids isolated from the Cephalotaxus genus. A convergent total synthesis of (-)-1 is reported, involving novel synthetic methods and strategies that include (1) the strain-release rearrangement of N-aryl-2-vinylaziridines for

Omacetaxine mepesuccinate for the treatment of leukemia.

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BACKGROUND Omacetaxine mepesuccinate, formerly known as homoharringtonine, is a first-in-class cephalotaxine that has experienced phases of increasing and waning interest since its first use in traditional Chinese medicine. With activity being reported in patients with chronic myeloid leukemia (CML)

Cephalotaxine esters: antileukemic advance or therapeutic failure?

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Clinical trials conducted in the People's Republic of China and the United States of the antileukemic efficacy of the cephalotaxine esters are reviewed. Harrington has been incorporated into combination regimens for the treatment of newly diagnosed acute nonlymphocytic leukemia (ANLL) in China, and

Homoharringtonine in combination with cytarabine for patients with acute myelogenous leukemia.

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Homoharringtonine (HHT) is one of several cephalotaxine alkaloids that has shown clinical efficacy in patients with acute myelogenous leukemia (AML). In a phase I trial we evaluated cytarabine 100 mg/m2 by continuous infusion daily for 7 days in combination with four dose levels of HHT ranging from

Homoharringtonine as a backbone drug for the treatment of newly diagnosed pediatric acute myeloid leukemia: a report from a single institution in China.

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Homoharringtonine (HHT) is one of several cephalotaxine alkaloids that has shown clinical efficacy in the treatment of acute myeloid leukemia (AML). The purpose of this study was to evaluate the efficacy and toxicity of HHT for de novo pediatric AML. Patients entered in this study were treated with

Validation of high-performance liquid chromatography-tandem mass spectrometry assays quantifying omacetaxine mepesuccinate and its 4'‑des-methyl and cephalotaxine metabolites in human plasma and urine.

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Omacetaxine mepesuccinate (hereafter called omacetaxine) is a modified cephalotaxine and is registered (Synribo(®)) for the treatment of adult patients with chronic myeloid leukemia (CML) with resistance and/or intolerance to two or more tyrosine kinase inhibitors (TKIs). To evaluate the

Effects of homoharringtonine alone and in combination with alpha interferon and cytosine arabinoside on 'in vitro' growth and induction of apoptosis in chronic myeloid leukemia and normal hematopoietic progenitors.

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Homoharringtonine (HHT) is a cephalotaxine alkaloid that showed clinical efficacy in the chronic phase of chronic myeloid leukemia (Ph1+CML). As a single agent, it resulted in effectively controlling leukocytosis and in producing sporadic karyotypic conversions; its clinical use in combination with

Preparation and antitumor activity of a rearranged ester of cephalotaxine.

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For further evaluation of structure-activity relationships among the Cephalotaxus alkaloids, a "rearranged" ester (2b) of cephalotaxine was prepared, one which is an isomer of deoxyharringtonine (5a). The parent alkaloid, cephalotaxine (1a), was allowed to react with thionyl chloride to replace its

[Isoharringtonine induces apoptosis in human leukemia HL-60 cell].

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Harringtonine (HT), homoharringtonine (HHT) and isoharringtonine (IHT) are cephalotaxine alkaloids with anticancer activities which were isolated from Cephalotaxus hainanensis indigenous to China. Since the 1970s, HT and HHT have been developed as effective anticancer drugs in China and have been

[Synthesis of analogs of cephalotaxine esters and their antitumor activities].

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Four analogs of cephalotaxine esters (C1Z, C2E, C3E, C4E) were synthesized. The ratio of the Z, E isomers of the side chain alpha, beta-unsaturated ester carboxylic acids is reported. The Z isomer was easy to transform to the E isomer. Compound C1Z showed significant activity of inducing cancer cell

[Studies on the alkaloids of Cephalotaxus. IX. Semi-synthesis of cephalotaxine esters and their anti-leukemic activity].

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Harringtonine, homoharringtonine, deoxyharringtonine and isoharringtonine isolated from Cephalotaxus plant are the esters of cephalotaxine with significant inhibitory activity against P-388 leukemia. In this investigation seventeen new esters of cephalotaxine type alkaloids have been synthesized.

Activity of drugs from traditional Chinese medicine toward sensitive and MDR1- or MRP1-overexpressing multidrug-resistant human CCRF-CEM leukemia cells.

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There is considerable interest among basic and clinical researchers in novel drugs with activity against leukemia. The vast history of experience of traditional Chinese medicine (TCM) with medicinal plants may facilitate the identification of novel antileukemic compounds. In the present

Homoharringtonine is safe and effective for patients with acute myelogenous leukemia.

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Homoharringtonine (HHT) is a cephalotaxine alkaloid with reported efficacy in acute myelogenous leukemia (AML). In a phase II trial, we evaluated HHT 5 mg/m2 by continuous infusion daily for 9 days in patients with relapsed or refractory acute leukemia and blastic phase of chronic myelogenous

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