CS270596B2 - Method of 4-demethoxyanthracycline derivatives production - Google Patents
Method of 4-demethoxyanthracycline derivatives production Download PDFInfo
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- CS270596B2 CS270596B2 CS887117A CS711788A CS270596B2 CS 270596 B2 CS270596 B2 CS 270596B2 CS 887117 A CS887117 A CS 887117A CS 711788 A CS711788 A CS 711788A CS 270596 B2 CS270596 B2 CS 270596B2
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- formula
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- 238000000034 method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims 2
- ZUFQFGSMHXKORU-UHFFFAOYSA-N 9-acetyl-6,7,9,11-tetrahydroxy-8,10-dihydro-7h-tetracene-5,12-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C(O)=C1C(O)CC(C(=O)C)(O)CC1=C2O ZUFQFGSMHXKORU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 235000010288 sodium nitrite Nutrition 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims 5
- 239000007864 aqueous solution Substances 0.000 claims 3
- 238000000605 extraction Methods 0.000 claims 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 239000012044 organic layer Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 229930182470 glycoside Natural products 0.000 abstract description 4
- 150000002338 glycosides Chemical class 0.000 abstract description 4
- 229940045799 anthracyclines and related substance Drugs 0.000 abstract description 3
- XDXDZDZNSLXDNA-TZNDIEGXSA-N Idarubicin Chemical compound C1[C@H](N)[C@H](O)[C@H](C)O[C@H]1O[C@@H]1C2=C(O)C(C(=O)C3=CC=CC=C3C3=O)=C3C(O)=C2C[C@@](O)(C(C)=O)C1 XDXDZDZNSLXDNA-TZNDIEGXSA-N 0.000 abstract description 2
- XDXDZDZNSLXDNA-UHFFFAOYSA-N Idarubicin Natural products C1C(N)C(O)C(C)OC1OC1C2=C(O)C(C(=O)C3=CC=CC=C3C3=O)=C3C(O)=C2CC(O)(C(C)=O)C1 XDXDZDZNSLXDNA-UHFFFAOYSA-N 0.000 abstract description 2
- 229960000908 idarubicin Drugs 0.000 abstract description 2
- YOFDHOWPGULAQF-MQJDWESPSA-N (7s,9s)-9-acetyl-6,7,9,11-tetrahydroxy-4-methoxy-8,10-dihydro-7h-tetracene-5,12-dione Chemical class C1[C@@](O)(C(C)=O)C[C@H](O)C2=C1C(O)=C1C(=O)C(C=CC=C3OC)=C3C(=O)C1=C2O YOFDHOWPGULAQF-MQJDWESPSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 230000000259 anti-tumor effect Effects 0.000 abstract 1
- 239000002246 antineoplastic agent Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- TWCMVXMQHSVIOJ-UHFFFAOYSA-N Aglycone of yadanzioside D Natural products COC(=O)C12OCC34C(CC5C(=CC(O)C(O)C5(C)C3C(O)C1O)C)OC(=O)C(OC(=O)C)C24 TWCMVXMQHSVIOJ-UHFFFAOYSA-N 0.000 description 3
- PLMKQQMDOMTZGG-UHFFFAOYSA-N Astrantiagenin E-methylester Natural products CC12CCC(O)C(C)(CO)C1CCC1(C)C2CC=C2C3CC(C)(C)CCC3(C(=O)OC)CCC21C PLMKQQMDOMTZGG-UHFFFAOYSA-N 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000006193 diazotization reaction Methods 0.000 description 3
- PFOARMALXZGCHY-UHFFFAOYSA-N homoegonol Natural products C1=C(OC)C(OC)=CC=C1C1=CC2=CC(CCCO)=CC(OC)=C2O1 PFOARMALXZGCHY-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- 238000006140 methanolysis reaction Methods 0.000 description 1
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
- C07H15/20—Carbocyclic rings
- C07H15/24—Condensed ring systems having three or more rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
- C07H15/20—Carbocyclic rings
- C07H15/24—Condensed ring systems having three or more rings
- C07H15/252—Naphthacene radicals, e.g. daunomycins, adriamycins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Saccharide Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
57) Řešení spočívá v novén způsobu výroby 4-demethoxydaunomycinonu, známého aglykonu 4-demethoxyanthracyklinových gíykosidů. Tento nový postup se provádí diazotací aminoskupiny v poloze 4 ve 4-demethoxy-4aminodaunomycinonu s následnou imírnou redukcí takto vzniklé diazohiové sloučeniny působením 50% vodného roztoku kyseliny fosforné při teplotě místnosti.
270 596 (11) (13) В 2 (51) Int. Clí
Způsob podle vynálezu se týká nové metody pro výrobu známé látky 4-demethoxydaunomycinonu, která je cenným meziproduktem pro 4-demethoxy-anthracyklinové glykosidy po kondenzaci s vhodnými deriváty cukrů.
V československém patentovém spisu 270585 qe popisuje způsob výroby nového aglykonu 4-demethoxy-4-amino-7-deoxydaunomycinonu vzorce·IX· · * 1
katalytickou deben2ylací 4-demethoxy-4-benzylamino-7-deoxydaunomycinonu vzorce VIII
Z takto získaného meziproduktu vzorce IX je možno snadno získat 4-demethoxy-4-amino -7-deoxydaunomycinon obecného vzorce XVa nebo 4-demethoxy-4-daunomycinon obecného vzorce XVb .
(XVa, b) (a: R4 = H b: R4 » OH)
Anthracykli попу obecného vzorce XVa,b, které nesou aminoskupinu v poloze 4, je pak možno převést na odpovídající deaminoderiváty obecného vzorce XIV a, b
1 | (XIVB.b) | ( 8 · йд a H, b: = OH) |
diazotací s následnou mírnou redukcí takto získaných diazoniových sloučenin. Výchozími látkami jsou tedy 4-demethoxy-4-amino-7-deoxydaunomycinon vzorce XVa, v němž znamená atom vodíku a 4-demethoxy-4-aminodaunomycinon obecného vzorce XVb, v němž R^ znamená hy droxyskupinu. Odstranění aminoskupiny v poloze 4 diazotací s mírnou redukcí vede к získá ní známého 4-demethoxy-7-deoxydaunomycinonu vzorce XlVa, v němž. R^ znamená atom vodíku nebo 4-demetoxydaunomycinonu vzorce XlVb, v němž R^ znamená hydroxylovou skupinu. Jak je dále znázorněno, provádí se diazotace s výhodou při použití vodného roztoku dusitanu sod ného a mírná redukce se s výhodou provádí působením kyseliny fosíorné.
1) vodný roztok NaNO2 ----------------> 2) kyselina ťosťorná
kde znamená atom vodíku nebo hydroxylovou skupinu.
Sloučeninu obecného vzorce XVa, v němž R^ znamená atom vodíku, je možno snadno převést na sloučeninu obecného vzorce XVb, v němž R^ znamená hydroxylovou skupinu standardními postupy. S výhodou se postupuje tak, že se uvede do reakce 4-demethoxy-4-amino-7-d®xydaunomycinon vzorce XVa nebo 4-demethoxy-4-aminodaunomycinon vzorce XVb, rozpuštěný ve
37% vodném roztoku kyseliny chlorovodíkové při teplotě v rozmezí 0 až 5 °C po dobu 1 hodiny s vodným roztokem dusitanu sodného a pak ještě na 5 hodin při teplotě místnosti za energického míchání s vodným roztokem kyseliny fosforné o koncentraci 50 %, pak se reakč ní směs extrahuje methylendichloridem a rozpouštědlo se odstraní za sníženého tlaku.
I t
4-Demethoxy-7-deoxydaunomycinon vzorce. XlVa je*, možno převést na 4-demethoxydaunomycinon vzorce XlVb zavedením hydroxylové skupiny do polohy 1. Toho je možno dosáhnout zná mým způsobem bromací v poloze 7, například, působením bromu nebo N-bromsukcinimidu (NBS) s následným působením hydroxidu alkalického kovu nebo octanu stříbrného nebo methanolýzou takto získaného acetátu. v.
4-Demethoxydaunomycinon vzorce XlVb je aglykonem známé a Široce používané látky 4-demethoxydaunorubicinu. · t
Praktické provedení způsobu podle vynálezu bude osvětleno následujícími příklady.
Příklad 1
Způsob výroby 4-demethoxy-7-deoxydaunomycinonu (XlVa)
Claims (1)
- l,78g, 5 mmolů 4-demethoxy-4-amino-7-deoxydaunomycinonu vzorce IX se rozpustí v 75 ml vodného 37% roztoku kyseliny chlorovodíkové, roztok se zchladí na 0 až 5 °C a pak se při dá 75 ml vodného roztoku s obsahem 0,6 g dusitanu sodného. Směs se 1 hodinu míchá při tqplotě 0 až 5 °C. Pak se přidá 25 ml vodného roztoku v 50% kyseliny fosforné a směs se pd< udržuje 5 hodin na teplotě místnosti za energického míchání.Pak se roztok zředí přidáním 200 ml vody a extrahuje se methylendichloridem. Organická vrstva se oddělí, vysuší se bezvodým síranem sodným a pak ae rozpouštědlo odstraní za sníženého tlaku, čímž se v kvantitativním výtěžku získá 1,7 g 4-demathoxy-7-deoxydaunomy - .cinonu vzorce XlVa, který je analyticky srovnatelný se standardním vzorkem.Příklad 2Způsob výroby 4-demethoxydaunomycinonu (XlVb)1,86 g, 5 mmolů, 4-demethoxy-4-aminodaunomycinonu vzorce II se převede na odpovídající 4-demethoxydaunomycinon vzorce XlVb svrchu uvedeným způsobem. Ve výtěžku 1,8 g se získá sloučenina XlVb, analyticky srovnatelná se standardním vzorkem.PŘEDMÉT VYNÍLE.ZUZpůsob výroby 4-demethoxy-7-deoxydaunomycinonu nebo 4-demethoxydaunomycinonu obecného vzorce XlVa, bCS 270596 82 (XlVa, b) (a: B^ = H, b: B, = OH) kde znamená atom vodíku nebo hydroxylovou skupinu, vyznačující se tím, že se 4-demethoxy-4-amino-7-deoxydaunomycinon vzorce XVa nebo 4-deme thoxy-4-aminodaunomycinon vzorce XVb .(XVa, b) (a: S.H, b: = OH) kde má svrchu uvedený význam, rozpustí v 37% vodném roztoku kyseliny chlorovodíkové a na tento roztok se působí 1 hodinu při teplotě 0 až 5 °C za míchání vodným roztokem dusitanu sodného, načež se roztok uvede do reakce na 5 hodin s 50% vodným roztokem kyseliny fosforné při teplotě místnosti , čímž se po extrakci methylendichlorldem a odpařením extrakčního rozpouštědla za snížonóřo tlaku získá v kvantitativním výtěžku sloučenina obecného vzorce XlVa, b.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878709353A GB8709353D0 (en) | 1987-04-21 | 1987-04-21 | 4-demethoxy-4-amino-anthracyclines |
GB888803302A GB8803302D0 (en) | 1988-02-12 | 1988-02-12 | Conversion of 4-demethoxy-4-amino anthracyclinones into 4-demethoxy-anthracyclinones |
CS882658A CS270585B2 (en) | 1987-04-21 | 1988-04-19 | Method of 4-demethoxy-4-aminoanthracycline derivatives production |
Publications (2)
Publication Number | Publication Date |
---|---|
CS711788A2 CS711788A2 (en) | 1989-11-14 |
CS270596B2 true CS270596B2 (en) | 1990-07-12 |
Family
ID=26292154
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS882658A CS270585B2 (en) | 1987-04-21 | 1988-04-19 | Method of 4-demethoxy-4-aminoanthracycline derivatives production |
CS887117A CS270596B2 (en) | 1987-04-21 | 1988-10-27 | Method of 4-demethoxyanthracycline derivatives production |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS882658A CS270585B2 (en) | 1987-04-21 | 1988-04-19 | Method of 4-demethoxy-4-aminoanthracycline derivatives production |
Country Status (26)
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US (2) | US4965351A (cs) |
EP (2) | EP0426653B1 (cs) |
JP (1) | JP2651414B2 (cs) |
KR (1) | KR880012627A (cs) |
CN (2) | CN1022038C (cs) |
AT (2) | ATE83239T1 (cs) |
AU (2) | AU600816B2 (cs) |
CA (2) | CA1315775C (cs) |
CS (2) | CS270585B2 (cs) |
DE (2) | DE3876482T2 (cs) |
DK (2) | DK170405B1 (cs) |
ES (2) | ES2093034T3 (cs) |
FI (1) | FI89263C (cs) |
GR (2) | GR3007163T3 (cs) |
HR (2) | HRP920920B1 (cs) |
HU (2) | HU200188B (cs) |
IE (1) | IE63510B1 (cs) |
IL (1) | IL86088A (cs) |
MY (2) | MY103365A (cs) |
NO (1) | NO168702C (cs) |
NZ (1) | NZ224252A (cs) |
PT (2) | PT87270B (cs) |
SI (1) | SI8810759A8 (cs) |
SU (2) | SU1614764A3 (cs) |
YU (2) | YU46455B (cs) |
ZA (1) | ZA882732B (cs) |
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GB8803301D0 (en) * | 1988-02-12 | 1988-03-09 | Erba Carlo Spa | Process for preparation of 4-demethoxy-daunomycinone aglycone of 4-demethoxy-daunorubicin |
GB8818167D0 (en) * | 1988-07-29 | 1988-09-01 | Erba Carlo Spa | Novel 4-substituted anthracyclinones & process for their preparation |
US5412081A (en) * | 1989-02-07 | 1995-05-02 | Farmitalia Carlo Erba S.R.L. | New 4'-epi-4'-amino anthracyclines |
GB8904794D0 (en) * | 1989-03-02 | 1989-04-12 | Erba Carlo Spa | Process for preparing anthracyclinones |
GB8905668D0 (en) * | 1989-03-13 | 1989-04-26 | Erba Carlo Spa | New 3'-(4-morpholinyl)-and 3'-(2-methoxy-4-morpholinyl)-anthracycline derivatives |
GB9019934D0 (en) * | 1990-09-12 | 1990-10-24 | Erba Carlo Spa | 2-hydroxy-and 2-acyloxy-4-morpholinyl anthracyclines |
GB9216962D0 (en) * | 1992-08-11 | 1992-09-23 | Erba Carlo Spa | Therapeutically active naphthalenesulfonic-pyrrolecarboxamido derivatives |
GB9416007D0 (en) * | 1994-08-08 | 1994-09-28 | Erba Carlo Spa | Anthracyclinone derivatives |
US6489346B1 (en) * | 1996-01-04 | 2002-12-03 | The Curators Of The University Of Missouri | Substituted benzimidazole dosage forms and method of using same |
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US5840737A (en) | 1996-01-04 | 1998-11-24 | The Curators Of The University Of Missouri | Omeprazole solution and method for using same |
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DE905014C (de) * | 1944-09-23 | 1954-02-25 | Cassella Farbwerke Mainkur Ag | Verfahren zum Ersatz der Diazogruppe durch Wasserstoff |
US3803124A (en) | 1968-04-12 | 1974-04-09 | Farmaceutici It Soc | Process for the preparation of adriamycin and adriamycinone and adriamycin derivatives |
GB1467383A (en) * | 1974-06-12 | 1977-03-16 | Farmaceutici Italia | Daunomycin analogues |
GB1500421A (en) * | 1975-01-22 | 1978-02-08 | Farmaceutici Italia | Optically active anthracyclinones |
GB1511559A (en) | 1975-09-26 | 1978-05-24 | Farmaceutici Italia | Anthracycline glycosides |
US4021457A (en) * | 1975-11-18 | 1977-05-03 | Research Corporation | Intermediates for polycyclic quinonoid antibiotics |
US4012448A (en) * | 1976-01-15 | 1977-03-15 | Stanford Research Institute | Synthesis of adriamycin and 7,9-epiadriamycin |
GB1509875A (en) | 1976-06-14 | 1978-05-04 | Farmaceutici Italia | Optically active anthracyclinones and anthracycline glycosides |
GB1567456A (en) * | 1976-11-16 | 1980-05-14 | Farmaceutici Italia | Daunomycin derivatives |
US4109076A (en) * | 1977-09-08 | 1978-08-22 | Sri International | 5-iminodaunomycin |
US4348388A (en) * | 1980-04-02 | 1982-09-07 | G.D. Searle & Co. | 11-Amino-11-deoxydaunorubicin and analogs |
EP0051280B1 (en) * | 1980-11-01 | 1984-07-11 | FARMITALIA CARLO ERBA S.p.A. | Anthracycline glycosides, process for the preparation thereof, intermediate compounds and their preparation and pharmaceutical compositions |
US4413120A (en) * | 1981-04-06 | 1983-11-01 | Purdue Research Foundation | Process for producing acosamine, daunosamine, 1-thioacosamine and related compounds |
IT1168014B (it) * | 1981-08-05 | 1987-05-20 | Erba Farmitalia | Forme farmaceutiche a cessione protratta |
US4563444A (en) * | 1982-05-26 | 1986-01-07 | Farmitalia Carlo Erba S.P.A. | Anthracycline glycosides, use and compositions containing same |
US4448724A (en) * | 1982-12-20 | 1984-05-15 | The Trustees Of The University Of Pennsylvania | Synthesis of 4-demethoxydaunomycinone |
WO1985001726A1 (en) * | 1983-10-19 | 1985-04-25 | The University Of Melbourne | Carminomycinone precursors and analogues and derivatives thereof |
US4564674A (en) * | 1983-10-31 | 1986-01-14 | Sagami Chemical Research Center | Process for an anthracycline derivative, and an anthracyclinone derivative useful for the process |
US4591637A (en) * | 1985-01-17 | 1986-05-27 | Sri International | Open chain-morpholino adriamycins |
GB8617742D0 (en) * | 1986-07-21 | 1986-08-28 | Erba Farmitalia | 6-amino anthracyclines |
GB8803301D0 (en) * | 1988-02-12 | 1988-03-09 | Erba Carlo Spa | Process for preparation of 4-demethoxy-daunomycinone aglycone of 4-demethoxy-daunorubicin |
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1988
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- 1988-10-27 CS CS887117A patent/CS270596B2/cs not_active IP Right Cessation
- 1988-11-04 SU SU884356729A patent/SU1729294A3/ru active
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1989
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1990
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- 1990-05-25 AU AU55916/90A patent/AU621222B2/en not_active Ceased
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1991
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1992
- 1992-09-12 CN CN92110559A patent/CN1024545C/zh not_active Expired - Fee Related
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1993
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1994
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1996
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Legal Events
Date | Code | Title | Description |
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IF00 | In force as of 2000-06-30 in czech republic | ||
MM4A | Patent lapsed due to non-payment of fee |
Effective date: 20040419 |