en Atrimustine - 2025 - Encyclopedia

Atrimustine
Clinical data

Other names	Bestrabucil; Busramustine; KM-2210; Kregan; Estradiol 3-benzoate 17β-((4-(4-(bis(2-chloroethyl)amino)phenyl)-1-oxobutoxy)acetate; 3-Benzoyl-17β-((4-(4-(bis(2-chloroethyl)amino)phenyl)-1-oxobutoxy)acetylestradiol^[1]
Drug class	Chemotherapeutic agent; Estrogen; Estrogen ester
Identifiers
IUPAC name [(8R,9S,13S,14S,17S)-17-[2-[4-[4-[bis(2-chloroethyl)amino]phenyl]butanoyloxy]acetyl]oxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl] benzoate
CAS Number	75219-46-4
PubChem CID	6917688
ChemSpider	5292918
UNII	XC0K09B7K4
ChEMBL	ChEMBL2106381
CompTox Dashboard (EPA)	DTXSID501046416
Chemical and physical data
Formula	C₄₁H₄₇Cl₂NO₆
Molar mass	720.73 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES C[C@]12CC[C@H]3[C@@H](CCc4cc(OC(=O)c5ccccc5)ccc34)[C@@H]1CC[C@@H]2OC(=O)COC(=O)CCCc6ccc(cc6)N(CCCl)CCCl
InChI InChI=1S/C41H47Cl2NO6/c1-41-21-20-34-33-17-15-32(49-40(47)29-7-3-2-4-8-29)26-30(33)12-16-35(34)36(41)18-19-37(41)50-39(46)27-48-38(45)9-5-6-28-10-13-31(14-11-28)44(24-22-42)25-23-43/h2-4,7-8,10-11,13-15,17,26,34-37H,5-6,9,12,16,18-25,27H2,1H3/t34-,35-,36+,37+,41+/m1/s1 Key:IFJUINDAXYAPTO-UUBSBJJBSA-N

Atrimustine (INNTooltip International Nonproprietary Name) (developmental code name KM-2210; former tentative brand name Kregan), also known as bestrabucil or busramustine, is a cytostatic antineoplastic agent which was under development in Japan by Kureha Chemicals (now Kureha Corporation) for the treatment of breast cancer and non-Hodgkin's lymphoma as well as for the prevention of graft-versus-host disease in bone marrow transplant recipients.^[1]^[2]^[3] It is the benzoate ester of an ester conjugate of estradiol and chlorambucil,^[4] which results in targeted/site-directed cytostatic activity toward estrogen receptor–positive tissues such as breast and bone.^[5]^[6] It reached preregistration for the treatment of cancer but was ultimately discontinued.^[3] Estrogenicic side effects of atrimustine in clinical trials included vaginal bleeding and gynecomastia.^[3] The drug was first patented in 1980.^[1]

References

^ ^a ^b ^c J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 897–898. ISBN 978-1-4757-2085-3.
^ William Andrew Publishing (22 October 2013). Pharmaceutical Manufacturing Encyclopedia, 3rd Edition. Elsevier. pp. 438–. ISBN 978-0-8155-1856-3.
^ ^a ^b ^c "Atrimustine – AdisInsight".
^ The Cancer Bulletin. Medical Arts Publishing Foundation. 1987. p. 245.
^ Ohsawa N, Yamazaki Z, Wagatsuma T, Isurugi K (1984). "[Bestrabacil: a possible target-oriented anticancer agent]". Gan to Kagaku Ryoho (in Japanese). 11 (10): 2115–2124. PMID 6548354.
^ Joji Ishigami (1985). Recent Advances in Chemotherapy: Proceedings of the 14th Internat. Congress of Chemotherapy, Kyoto, 1985. Antimicrobial section; 1. 1 ,1. University of Tokyo Press. p. 52,54,471. ISBN 978-0-86008-385-6.

Estrogen receptor modulators

Agonists	Steroidal: 2-Hydroxyestradiol 2-Hydroxyestrone 3-Methyl-19-methyleneandrosta-3,5-dien-17β-ol 3α-Androstanediol 3α,5α-Dihydrolevonorgestrel 3β,5α-Dihydrolevonorgestrel 3α-Hydroxytibolone 3β-Hydroxytibolone 3β-Androstanediol 4-Androstenediol 4-Androstenedione 4-Fluoroestradiol 4-Hydroxyestradiol 4-Hydroxyestrone 4-Methoxyestradiol 4-Methoxyestrone 5-Androstenediol 7-Oxo-DHEA 7α-Hydroxy-DHEA 7α-Methylestradiol 7β-Hydroxyepiandrosterone 8,9-Dehydroestradiol 8,9-Dehydroestrone 8β-VE2 10β,17β-Dihydroxyestra-1,4-dien-3-one (DHED) 11β-Chloromethylestradiol 11β-Methoxyestradiol 15α-Hydroxyestradiol 16-Ketoestradiol 16-Ketoestrone 16α-Fluoroestradiol 16α-Hydroxy-DHEA 16α-Hydroxyestrone 16α-Iodoestradiol 16α-LE2 16β-Hydroxyestrone 16β,17α-Epiestriol (16β-hydroxy-17α-estradiol) 17α-Estradiol (alfatradiol) 17α-Dihydroequilenin 17α-Dihydroequilin 17α-Epiestriol (16α-hydroxy-17α-estradiol) 17α-Ethynyl-3α-androstanediol 17α-Ethynyl-3β-androstanediol 17β-Dihydroequilenin 17β-Dihydroequilin 17β-Methyl-17α-dihydroequilenin Abiraterone Abiraterone acetate Alestramustine Almestrone Anabolic steroids (e.g., testosterone and esters, methyltestosterone, metandienone (methandrostenolone), nandrolone and esters, many others; via estrogenic metabolites) Atrimustine Bolandiol Bolandiol dipropionate Butolame Clomestrone Cloxestradiol Cloxestradiol acetate Conjugated estriol Conjugated estrogens Cyclodiol Cyclotriol DHEA DHEA-S ent-Estradiol Epiestriol (16β-epiestriol, 16β-hydroxy-17β-estradiol) Epimestrol Equilenin Equilin ERA-63 (ORG-37663) Esterified estrogens Estetrol Estradiol Estradiol esters Lipoidal estradiol Polyestradiol phosphate Estramustine Estramustine phosphate Estrapronicate Estrazinol Estriol Estriol esters Polyestriol phosphate Estrofurate Estrogenic substances Estromustine Estrone Estrone esters Estrone methyl ether Estropipate Etamestrol (eptamestrol) Ethinylandrostenediol Ethandrostate Ethinylestradiol Ethinylestradiol 3-benzoate Ethinylestradiol sulfonate Ethinylestriol Ethylestradiol Etynodiol Etynodiol diacetate Hexolame Hippulin Hydroxyestrone diacetate Lynestrenol Lynestrenol phenylpropionate Mestranol Methylestradiol Moxestrol Mytatrienediol Nilestriol Norethisterone Noretynodrel Orestrate Pentolame Prodiame Prolame Promestriene RU-16117 Quinestradol Quinestrol Tibolone Nonsteroidal: (R,R)-THC (S,S)-THC 2,8-DHHHC β-LGND1 β-LGND2 (GTx-878) AC-186 Allenestrol Allenolic acid Benzestrol Bifluranol Bisdehydrodoisynolic acid Butestrol Carbestrol D-15414 DCW234 Diarylpropionitrile Dienestrol Dienestrol diacetate Diethylstilbestrol Diethylstilbestrol esters Dimestrol (dianisylhexene) Dimethylstilbestrol Doisynoestrol (fenocycline) Doisynolic acid Efavirenz Elacestrant ERB-196 (WAY-202196) Erteberel (SERBA-1, LY-500307) Estrobin (DBE) Fenestrel FERb 033 Fosfestrol (diethylstilbestrol diphosphate) Furostilbestrol (diethylstilbestrol difuroate) GTx-758 Hexestrol Hexestrol esters ICI-85966 (Stilbostat) M2613 meso-Butestrol meso-Hexestrol Mestilbol Methallenestril Methestrol Methestrol dipropionate Paroxypropione Pentafluranol Phenestrol Prinaberel (ERB-041, WAY-202041) Propylpyrazoletriol Quadrosilan SC-3296 SC-4289 SERBA-2 SKF-82,958 Terfluranol Triphenylbromoethylene Triphenylchloroethylene Triphenyliodoethylene Triphenylmethylethylene (triphenylpropene) WAY-166818 WAY-169916 WAY-200070 WAY-204688 (SIM-688) WAY-214156 Unknown/unsorted: ERB-26 ERA-45 ERB-79 ZK-283197 Xenoestrogens: Anise-related (e.g., anethole, anol, dianethole, dianol, photoanethole) Chalconoids (e.g., isoliquiritigenin, phloretin, phlorizin (phloridzin), wedelolactone) Coumestans (e.g., coumestrol, psoralidin) Flavonoids (incl. 7,8-DHF, 8-prenylnaringenin, apigenin, baicalein, baicalin, biochanin A, calycosin, catechin, daidzein, daidzin, ECG, EGCG, epicatechin, equol, formononetin, glabrene, glabridin, genistein, genistin, glycitein, kaempferol, liquiritigenin, mirificin, myricetin, naringenin, penduletin, pinocembrin, prunetin, puerarin, quercetin, tectoridin, tectorigenin) Lavender oil Lignans (e.g., enterodiol, enterolactone, nyasol (cis-hinokiresinol)) Metalloestrogens (e.g., cadmium) Pesticides (e.g., alternariol, dieldrin, endosulfan, fenarimol, HPTE, methiocarb, methoxychlor, triclocarban, triclosan) Phytosteroids (e.g., digitoxin (digitalis), diosgenin, guggulsterone) Phytosterols (e.g., β-sitosterol, campesterol, stigmasterol) Resorcylic acid lactones (e.g., zearalanone, α-zearalenol, β-zearalenol, zearalenone, zeranol (α-zearalanol), taleranol (teranol, β-zearalanol)) Steroid-like (e.g., deoxymiroestrol, miroestrol) Stilbenoids (e.g., resveratrol, rhaponticin) Synthetic xenoestrogens (e.g., alkylphenols, bisphenols (e.g., BPA, BPF, BPS), DDT, parabens, PBBs, PHBA, phthalates, PCBs) Others (e.g., agnuside, rotundifuran)
Mixed (SERMsTooltip Selective estrogen receptor modulators)	2-Phenylbenzofuran 2-Phenylbenzothiophene 4'-Hydroxynorendoxifen 27-Hydroxycholesterol Acefluranol Acolbifene Afimoxifene Anordiol Anordrin Arzoxifene Bazedoxifene Brilanestrant Broparestrol Camizestrant Chlorotrianisene Clomifene Clomifenoxide CN-55945-27 Cyclofenil D-15413 Desmethylchlorotrianisene Droloxifene Enclomifene Endoxifen Etacstil (GW-5638, DPC-974) Ethamoxytriphetol (MER-25) Femarelle Fispemifene GW-7604 ICI-55548 Idoxifene Lasofoxifene Levormeloxifene LN-1643 LN-2299 LY-117018 Menerba Miproxifene Miproxifene phosphate MRL-37 Nafoxidine Nitromifene NNC 45-0095 NNC 45-0320 NNC 45-0781 NNC 45-1506 Ormeloxifene Ospemifene Panomifene Pipendoxifene Promensil Raloxifene Rimostil (P-081) Spironolactone SS1010 Tamoxifen TAS-108 (SR-16234) Toremifene Trioxifene TZE-5323 U-11555A U-11634 Y-134 Zindoxifene Zuclomifene
Antagonists	(R,R)-THC 7β-Hydroxy-DHEA Chloroindazole Cytestrol acetate EM-800 (SCH-57050) Epitiostanol ERA-90 ERB-88 Fulvestrant (ICI-182780) Glyceollins (I, II, III, IV) ICI-164384 MDL-101906 Mepitiostane Methylepitiostanol Methylpiperidinopyrazole MIBE Oxabicycloheptene sulfonate Phenytoin PHTPP Prochloraz RU-39411 RU-58668 SS1020 TAS-108 (SR-16234) ZB716 ZK-164015 ZK-191703 Coregulator-binding modulators: ERX-11 Noncompetitive inhibitors: Trilostane

GPER

Agonists	2-Methoxyestradiol 7β-Hydroxyepiandrosterone Afimoxifene (4-hydroxytamoxifen) Aldosterone Atrazine Bisphenol A Daidzein DDT (p,p'-DDT, o',p'-DDE) Diarylpropionitrile Equol Estradiol Ethinylestradiol Fulvestrant (ICI-182780) G-1 Genistein GPER-L1 GPER-L2 Hydroxytyrosol Kepone Nicotinic acid Nicotinamide Nonylphenol Oleuropein PCBs (2,2',5'-PCB-4-OH) Propylpyrazoletriol Quercetin Raloxifene Resveratrol STX Tamoxifen Tectoridin
Antagonists	CCL18 Estriol G-15 G-36 MIBE
Unknown	Diethylstilbestrol Zearalenone

See also: Receptor/signaling modulators; Estrogens and antiestrogens; Androgen receptor modulators; Progesterone receptor modulators; List of estrogens

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Atrimustine

See also

References

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