Losoxantrone

Chemical compound

Losoxantrone
Identifiers

IUPAC name 7-Hydroxy-2-{2-[(2-hydroxyethyl)amino]ethyl}-5-({2-[(2-hydroxyethyl)amino]ethyl}amino)dibenzo[cd,g]indazol-6(2H)-one
CAS Number	88303-60-0^Y
PubChem CID	72116
ChemSpider	65094^Y
UNII	47KPH00809
CompTox Dashboard (EPA)	DTXSID60236949
Chemical and physical data
Formula	C₂₂H₂₇N₅O₄
Molar mass	425.489 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES c1cc-2c(c(c1)O)C(=O)c3c(ccc4c3c2nn4CCNCCO)NCCNCCO
InChI InChI=InChI=1S/C22H27N5O4/c28-12-9-23-6-7-25-15-4-5-16-20-19(15)22(31)18-14(2-1-3-17(18)30)21(20)26-27(16)11-8-24-10-13-29/h1-5,23-25,28-30H,6-13H2^Y Key:YROQEQPFUCPDCP-UHFFFAOYSA-N^Y

Losoxantrone (biantrazole) is an anthroquinone anthrapyrazole antineoplastic agent and analog of mitoxantrone.^[1]^[2] It is also sometimes known as DuP 941.^[3]

References

^ Showalter HD, Johnson JL, Hoftiezer JM, Turner WR, Werbel LM, Leopold WR, et al. (January 1987). "Anthrapyrazole anticancer agents. Synthesis and structure-activity relationships against murine leukemias". Journal of Medicinal Chemistry. 30 (1): 121–31. doi:10.1021/jm00384a021. PMID 3806589.
^ Beylin VG, Colbry NL, Goel OP, Haky JE, Johnson DR, Johnson JL, Kanter GD, Leeds RL, Leja B, Lewis EP, Rithner CD (1989). "Anticancer anthrapyrazoles. Improved syntheses of clinical agents CI-937, CI-941, and piroxantrone hydrochloride". Journal of Heterocyclic Chemistry. 26: 85–96. doi:10.1002/jhet.5570260117.
^ Leteurtre F, Kohlhagen G, Paull KD, Pommier Y (August 1994). "Topoisomerase II inhibition and cytotoxicity of the anthrapyrazoles DuP 937 and DuP 941 (Losoxantrone) in the National Cancer Institute preclinical antitumor drug discovery screen". Journal of the National Cancer Institute. 86 (16): 1239–44. doi:10.1093/jnci/86.16.1239. PMID 8040892.

Intracellular chemotherapeutic agents / antineoplastic agents (L01)

SPs/MIs
(M phase)

Block microtubule assembly	Vinca alkaloids (Vinblastine^# Vincristine^# Vindesine Vinflunine^§ Vinorelbine^#)
Block microtubule disassembly	Taxanes (Cabazitaxel Docetaxel^# Larotaxel Ortataxel^† Paclitaxel^# Tesetaxel) Epothilones (Ixabepilone)

DNA replication
inhibitor

DNA precursors/
antimetabolites
(S phase)

Folic acid	Dihydrofolate reductase inhibitor (Aminopterin Methotrexate^# Pemetrexed Pralatrexate) Thymidylate synthase inhibitor (Pemetrexed Raltitrexed)
Purine	Adenosine deaminase inhibitor (Pentostatin) Halogenated/ribonucleotide reductase inhibitors (Cladribine Clofarabine Fludarabine) Nelarabine Thiopurine (Mercaptopurine^# Tioguanine^#)
Pyrimidine	Thymidylate synthase inhibitor (Capecitabine^# Carmofur Doxifluridine Floxuridine Fluorouracil^# Tegafur (+gimeracil/oteracil)) DNA polymerase inhibitor (Cytarabine^# +daunorubicin) Ribonucleotide reductase inhibitor (Gemcitabine^#) Hypomethylating agent (Azacitidine Decitabine)
Deoxyribonucleotide	Ribonucleotide reductase inhibitor (Hydroxycarbamide^#)

Topoisomerase inhibitors
(S phase)

I	Camptotheca (Belotecan Camptothecin Cositecan^† Etirinotecan pegol^† Exatecan Gimatecan Irinotecan^# Lurtotecan^‡ Rubitecan^‡ Silatecan^§ Topotecan)
II	Podophyllum (Etoposide^# Teniposide)
II+Intercalation	Anthracyclines (Aclarubicin Amrubicin^† Daunorubicin^# (+cytarabine) Doxorubicin^# Epirubicin Idarubicin Pirarubicin Valrubicin Zorubicin) Anthracenediones (Mitoxantrone Losoxantrone Pixantrone) Amsacrine Bisantrene Crisnatol Menogaril^§

Crosslinking of DNA
(CCNS)

Alkylating	Nitrogen mustards: Bendamustine^# Chlormethine Cyclophosphamide^# (Ifosfamide^# Trofosfamide) Chlorambucil^# Melphalan (Melphalan flufenamide) Prednimustine Uramustine Nitrosoureas: Carmustine Fotemustine Lomustine (Semustine) Nimustine Ranimustine Streptozocin Alkyl sulfonates: Busulfan (Mannosulfan Treosulfan) Aziridines: Carboquone Thiotepa Triaziquone Triethylenemelamine
Platinum-based	Carboplatin^# Cisplatin^# Dicycloplatin Nedaplatin Oxaliplatin^# Satraplatin
Nonclassical	Altretamine Hydrazines (Procarbazine^#) Etoglucid Mitobronitol Pipobroman Triazenes (Dacarbazine^# Mitozolomide^§ Temozolomide)
Intercalation	Streptomyces (Dactinomycin^# Bleomycin^# Mitomycins Plicamycin)

Photosensitizers/PDT

Other

Enzyme inhibitors	FI (Tipifarnib^§) CDK inhibitors (Abemaciclib Alvocidib^† Palbociclib Ribociclib Seliciclib^†) PrI Bortezomib Carfilzomib Oprozomib Ixazomib PhI (Anagrelide) IMPDI (Tiazofurin^§) LI (Masoprocol) PARP inhibitor (Fuzuloparib) Niraparib +abiraterone acetate Olaparib Rucaparib) HDAC (Belinostat Entinostat Panobinostat Romidepsin Vorinostat) PIKI (Pi3K) (Alpelisib Copanlisib Duvelisib Idelalisib Umbralisib^‡)
Receptor antagonists	ERA (Atrasentan) Retinoid X receptor (Bexarotene) Sex steroid (Testolactone)
Other/ungrouped	Adagrasib Aflibercept Arsenic trioxide Asparagine depleters (Asparaginase^#/Pegaspargase) Axicabtagene ciloleucel Belzutifan Bexarotene Brexucabtagene autoleucel Celecoxib Ciltacabtagene autoleucel Demecolcine Denileukin diftitox Elesclomol^§ Elsamitrucin Enasidenib Epacadostat Eribulin Estramustine phosphate Glasdegib Idecabtagene vicleucel Ivosidenib Lifileucel Lonidamine Lucanthone Lurbinectedin Mitoguazone Mitotane Oblimersen^† Omacetaxine mepesuccinate Plitidepsin Retinoids (Alitretinoin Tretinoin^#) Selinexor Sitimagene ceradenovec Sotorasib Tagraxofusp Talimogene laherparepvec Tazemetostat Tebentafusp Tiazofurine Tigilanol tiglate Tisagenlecleucel Trabectedin Veliparib Venetoclax Verdinexor Vosaroxin