Mitoxantrone hydrochloride is the first of the synthetic anthracenediones related
to doxorubicin to reach the marketplace. Mitoxantrone is useful in the treatment
of advanced localized and metastatic mammary carcinomas. It is reported to be
less cardiotoxic than doxorubicin.
Mitoxantrone is an anthraquinone that intercalates in DNA and inhibits topoisomerase II (IC50 = 5.3 μM), thus inhibiting cell proliferation. It also inhibits HIV-1 integrase (IC50 = 3.8 μM). Mitoxantrone is exported from cells in an ATP- and glutathione-dependent manner by multidrug resistance protein-1. Formulations containing mitoxantrone have been used in the treatment of cancer and multiple sclerosis.
Dark blue, electrostatic, hygroscopic powder.
Mitoxantrone dihydrochloride is an antiviral, antibacterial, antiprotozoal, immunomodulating, and antineoplastic cytostatic anthraquinone derivative. Induces DNA damage by intercalating into DNA and inhibiting Topo II (topoisomerase II). Mitoxantrone dihydrochloride induces interstrand DNA cross-links and DNA-protein cross-links in cellular systems. Mitoxantrone dihydrochloride has recently been shown to be an inhibitor of DNA methylation.
Mitoxanthrone hydrochloride USP (Novantrone) is used to traet acute nonlymphocytic leukemia, including myelogenous promyelocytic, monocytic, and erythroid acute leukemias.
ChEBI: Mitoxantrone dihydrochloride is a hydrochloride. It has a role as an antineoplastic agent. It contains a mitoxantrone.
A suspension of 12.5 g of 2-(2-aminoethylamino)ethanol in 40 ml of
N,N,N',N'-tetramethylethylenediamine is stirred and de-aerated by bubbling
nitrogen in for 15 min. A 10.97 g of leuco-1,4,5,8-tetrahydroxyanthraquinone
is gradually added with stirring. The suspension is heated and stirred under
nitrogen at 50-52°C for 5 hours. The mixture is allowed to stand and cool
under nitrogen for 12 hours. The solid is collected by decantation, macerated
in ethanol, collected and washed with ethanol giving 15.06 g of the desired
product leuco-1,4-bis[2-(2-hydroxyethylamino)ethylamino]-5,8-
dihydroxyanthraquinone as a green-gray solid, melting point 129-131°C.
Chloranil oxidation. To 17.86 g of a suspension of the leuco-1,4-bis[2-(2-
hydroxyethylamino)ethylamino]-5,8-dihydroxyanthraquinone (0.03 mole) in 2-
methoxyethanol was added gradually with stirring 15 ml of 8 N ethanolic
hydrogen chloride. The system was chilled with an ice bath and stirred as 7.50
g (0.0305 mole) of chloranil powder was gradually added. The mixture was
stirred overnight at room temperature and diluted with 600 ml of ether. The
solid was collected and washed with tetrahydrofuran. Yield of 1,4-bis[2-(2-
hydroxyethylamino)ethylamino]-5,8-dihydroxyanthraquinone dihydrochloride
21.34 g, melting point 203-205°C (without recrystallisation).
Mitoxantrone is supplied as a blue aqueous solution in 10-and 20-mg vials for IV administration in the treatment of acute lymphoid leukemia, acute myeloid leukemia, breastcancer, prostate cancer, non-Hodgkin’s lymphoma, andmultiple sclerosis. The mechanisms of resistance are thesame as those seen for the anthracyclines. The distributionhalf-life is 1.1 to 3.1 hours, and the drug has a large volumeof distribution (11 L/kg). The elimination half-life rangedfrom 23 to 215 hours, and elimination was primarily via thebile. Metabolism of the agent involves oxidation of the sidechainalcohols to give the monocarboxylic and dicarboxylicacids.Other toxicities are those seen for the anthracyclinesand include myelosuppression, nausea, vomiting, mucositis,diarrhea, and alopecia. The intense color of the parent drugand metabolites may turn the urine blue.
Mitoxantrone is a cytostatic anthracenedione that intercalates in DNA and increases the incidence of double-strand breaks by stabilizing the cleavable complex of topoisomerase II and DNA. Mitoxantrone also displays broad immunosuppressive activity inhibiting proliferation of all classes of lymphocytes and inducing apoptosis of antigen-presenting T cells. It used clinically as a chemotherapeutic agent against leukemias and solid tumors and as an immune system modulator in multiple sclerosis.
Mitoxantrone is used in combination with other agents during the initial treatment of acute nonlymphocytic leukemia and hormone-refractory prostate cancer. Recent studies have shown that mitoxantrone also decreases the rate of relapse and disease progression in patients with multiple sclerosis. Although too toxic for use in patients with primary progressive disease, it is available for the treatment of chronic progressive, progressive relapsing, or deteriorating relapsing-remitting multiple sclerosis.
Mitoxantrone excretion primarily is biliary. Both the unchanged drug and inactive metabolites resulting from N-dealkylation, deamination, and oxidation of the resultant aldehyde to the carboxylic acid are observed. Both arms of the structure can be metabolized, leading to mono- or dicarboxylic acid metabolites, which are excreted as the glucuronide conjugate. The conjugated metabolites are an intense, dark blue in color and will result in blue-green urine.
