EP1592697A1 - Nukleosidanaloga mit apoptose-induzierenden eigenschaften zur therapie durch hoch-proliferierende zellen verursachter erkrankungen - Google Patents
Nukleosidanaloga mit apoptose-induzierenden eigenschaften zur therapie durch hoch-proliferierende zellen verursachter erkrankungenInfo
- Publication number
- EP1592697A1 EP1592697A1 EP04709602A EP04709602A EP1592697A1 EP 1592697 A1 EP1592697 A1 EP 1592697A1 EP 04709602 A EP04709602 A EP 04709602A EP 04709602 A EP04709602 A EP 04709602A EP 1592697 A1 EP1592697 A1 EP 1592697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aryl
- alkyl
- acyl
- geranyl
- derivatives
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- 125000002350 geranyl group Chemical group [H]C([*])([H])/C([H])=C(C([H])([H])[H])/C([H])([H])C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H] 0.000 claims 14
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- RBHJBMIOOPYDBQ-UHFFFAOYSA-N carbon dioxide;propan-2-one Chemical compound O=C=O.CC(C)=O RBHJBMIOOPYDBQ-UHFFFAOYSA-N 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 208000018805 childhood acute lymphoblastic leukemia Diseases 0.000 description 1
- 201000011633 childhood acute lymphocytic leukemia Diseases 0.000 description 1
- 208000037976 chronic inflammation Diseases 0.000 description 1
- 208000037893 chronic inflammatory disorder Diseases 0.000 description 1
- 229960002436 cladribine Drugs 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 125000001995 cyclobutyl group Chemical class [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 229960000684 cytarabine Drugs 0.000 description 1
- 210000000805 cytoplasm Anatomy 0.000 description 1
- 239000000824 cytostatic agent Substances 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 238000010511 deprotection reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229960001904 epirubicin Drugs 0.000 description 1
- 229960000390 fludarabine Drugs 0.000 description 1
- GIUYCYHIANZCFB-FJFJXFQQSA-N fludarabine phosphate Chemical compound C1=NC=2C(N)=NC(F)=NC=2N1[C@@H]1O[C@H](COP(O)(O)=O)[C@@H](O)[C@@H]1O GIUYCYHIANZCFB-FJFJXFQQSA-N 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 210000000777 hematopoietic system Anatomy 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
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- 230000036031 hyperthermia Effects 0.000 description 1
- 230000000984 immunochemical effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000006882 induction of apoptosis Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000036210 malignancy Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 210000003470 mitochondria Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002547 new drug Substances 0.000 description 1
- 125000003835 nucleoside group Chemical group 0.000 description 1
- 239000005426 pharmaceutical component Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000000861 pro-apoptotic effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005522 programmed cell death Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002718 pyrimidine nucleoside Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- YTZKOQUCBOVLHL-UHFFFAOYSA-N tert-butylbenzene Chemical compound CC(C)(C)C1=CC=CC=C1 YTZKOQUCBOVLHL-UHFFFAOYSA-N 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 201000002510 thyroid cancer Diseases 0.000 description 1
- 208000013077 thyroid gland carcinoma Diseases 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/47—One nitrogen atom and one oxygen or sulfur atom, e.g. cytosine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/52—Two oxygen atoms
- C07D239/54—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/52—Two oxygen atoms
- C07D239/54—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals
- C07D239/545—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals with other hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/553—Two oxygen atoms as doubly bound oxygen atoms or as unsubstituted hydroxy radicals with other hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms with halogen atoms or nitro radicals directly attached to ring carbon atoms, e.g. fluorouracil
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/18—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 one oxygen and one nitrogen atom, e.g. guanine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
Definitions
- the present invention relates to compounds and medicaments for the treatment of diseases caused by highly proliferating cells, and to processes for the preparation of such compounds and medicaments.
- ALL acute lymphoblastic leukemia
- Tumor diseases such as thyroid carcinoma, very common breast cancer, difficult to access medulloblastoma or towards gliomas.
- a benign skin condition that is also treated with such therapies is psoriasis (psoriasis). It is one of the most common skin diseases that affect two to four percent of people. The therapy for this disease is also in great need of improvement.
- WO 2080923 AI describes nucleoside analogues that trigger apoptosis and have a cytostatic effect. These compounds have in common a ring structure which contains a diene system to which an iron tricarbonyl is preferably coordinatively bound. Because of the diene structure, the known substances are difficult to synthesize. The substances tend to undesirable side reactions due to the reactivity of the diene and are therefore relatively unstable. This is disadvantageous both for storage and preparation in connection with other pharmaceutical components, and for the specificity after administration.
- Velcicky et al., 2002 discloses a general synthetic strategy for nucleoside analogs using targeted protecting groups. According to the authors, the synthesis should make it possible to produce a large variety of nucleoside analogues that could potentially have biological activity.
- Nucleoside analogues have an antiviral potential.
- EP-A-0 358 154 discloses cyclobutane derivatives and a process for their preparation.
- FR-A-2 662 165 discloses branched nucleoside derivatives, a process for their preparation and their use in a medicament.
- the invention is therefore based on the object of providing corresponding substances. Another task is to provide substances with alternative and new mechanisms of action in order to expand and supplement the treatment options. The invention is also based on the object of providing corresponding substances which are simple to manufacture and are relatively stable.
- the invention does not relate to the compounds described in Velcicky et al. (2002).
- the subject of the invention are, as far as claimed, corresponding medicaments.
- the authors did not recognize that some of the products and intermediate products disclosed are themselves particularly suitable for the treatment of tumors.
- the invention relates to the various stereoisomers of the compounds according to the invention, the individual enantiomers and the corresponding racemates.
- the cis configuration in the compounds according to the invention denotes that the radicals Y and Z are on the same side of the central five-membered ring.
- the compounds according to the invention can be used to prepare a medicament for the treatment of malignant diseases of the bone marrow or other hematopoietic organs, solid tumors, epithelial tumors, benign or semimalignant rapidly proliferating tumors or skin diseases, in particular psoriasis vulgaris, keloids and basaliomas, lymphomas, in particular Hodgkin's and non-Hodgkin's lymphomas, inflammatory, chronically inflammatory, bacterial and autoimmune diseases, as well as for antibacterial, antifungal, anti-protozoa, anti-plasmodia, anti-helminthic, antiviral or immunosuppressive therapy.
- the pharmaceuticals and compounds according to the invention are unexpectedly suitable for the therapy of pathologically rapidly proliferating tissue, in particular bone marrow, but also of solid tumors, such as epithelial tumors or in particular brain tumors. Furthermore, the applicability of the substances described also extends to the treatment of benign, hyperproliferative diseases of the skin, such as, for. B. the psoriasis or the keloid.
- the drugs and substances of the invention are characterized in that they are particularly suitable, selectively that Inhibit growth of highly proliferating cells. As a result, they initiate apoptosis of highly proliferating cells and thus destroy them, with healthy cells being affected very little.
- the experiments carried out show that substances according to the invention trigger apoptosis unusually quickly. The experiments carried out suggest that apoptosis could be initiated using a new mechanism.
- the substances are particularly preferably membrane-permeable, which leads to a high intracellular active substance concentration. The high effectiveness is therefore likely to be achieved through the pronounced lipophilicity of the substances.
- the substances differ fundamentally from known nucleoside analogues used for therapy, such as cytarabine, cladribine and fludarabine 5'-dihydrogen phosphate. They are able to break existing cytostatic resistances.
- the pharmaceuticals and compounds of the invention are particularly suitable for the treatment of tumor diseases and leukemia. They induce apoptotic cell death not only in permanent cell lines (BJAB cells) formed from tumor cells, but also in primary cells from patients with acute lymphoblastic leukemia (ALL). This allows the substances according to the invention against tumor diseases of the bone marrow, but also against tumors of another provenance, such as. B. epithelial tumors, sarcomas or malignant diseases of the skin, etc. are used.
- the developed substances are able to cross the blood-brain barrier unhindered due to their lipophilicity. Therefore, they can be used to treat malignant brain tumors, such as, for. B. the medulloblastoma or gliomas can be used.
- the substances according to the invention can be used to treat malignant diseases of the bone marrow or other hematopoietic organs, solid tumors, epithelial tumors, benign or semi-malignant rapidly proliferating skin diseases, in particular psoriasis vulgaris, keloids and basaliomas, as well as inflammatory and chronic inflammatory diseases. They are also suitable for antiviral, antibacterial, antifungal, anti-protozoa, anti-helminthic or immunosuppressive therapy.
- the compounds and medicaments of the invention have the advantage over the known substances from WO02 / 080923 that they are easier to synthesize, handle and store, and have little tendency to undesirable side reactions in the preparation of the medicament and also in the body.
- apoptosis shows that the cell death triggered by the novel nucleoside analogs is not undifferentiated necrosis but apoptosis.
- the measurement of apoptosis is based on a method that demonstrates the fragmentation of DNA typical of apoptosis at the individual cell level, which distinguishes this cell death form from necrosis.
- BJAB cells were treated for 72 h with a concentration of 20 ⁇ mol / l of different nucleoside analogs. Controls contained appropriate amounts of the solubilizer ethanol. After the treatment, the fragmentation of the DNA was stained with propidium iodide and then quantified by flow cytometry as described by Eßmann et al. (2000). The values are given as% apoptotic cells of the total population. Duplicate values were measured the mean value given was confirmed after two independent repetitions of the experiment (deviations ⁇ 3%).
- FIG. 3 shows apoptosis induction via the resulting DNA fragmentation on primary lymphoblasts - of children with acute lymphoblastic leukemia (ALL). After isolation of the primary lymphoblasts and dilution with cell culture medium, they were treated with 20 ⁇ M each of the nucleoside analog for 36 h.
- ALL acute lymphoblastic leukemia
- Controls contained appropriate amounts of the solubilizer ethanol. After the treatment, the fragmentation of the DNA was stained with propidium iodide and then quantified by flow cytometry as described by Eßmann et al. (2000). The values are given as% apoptotic cells of the total population. Duplicate values were measured, the mean value being confirmed after two independent repetitions of the experiment (deviations ⁇ 3%).
- Procaspase-3, Pro-C-8 and Pro-C-9 became more specific Immunodetection in a Western blot as described by Eßmann et al. (2000).
- the positions of the procaspases and the processed subunits in the SDS-polyacrylamide gel are indicated by dashes on the left edge of FIG. 4.
- the addition of 20 ⁇ mol / l of the substances to the medium of BJAB cells triggers a processing of the Procaspasen-3, -8 and -9 in these cells.
- the specific, immunochemical detection of the active subunits of caspases-3, -8 and -9 in treated cells can be seen in contrast to the corresponding control cells.
- the nucleoside analogue (-) - 159b induces the caspase processing (FIG. 4) so quickly that even at the time of measurement after 36 h hardly any of the procaspases-3, -8 and -9 are present.
- 5 already contains a first indication of the apoptosis signal cascade activated by the novel nucleoside analogs. 5 shows that the BJAB cells incubated with the novel nucleoside analogs over 48 h are driven into the mitchondrial apoptosis pathway. This was visualized by staining the cells with the mitochondrial specific 'ifischen dye JC-1, such as by re et al. (2001). Incubation of the cells with the new nucleoside analogues led to a significant increase in the proportion of cells with a reduced mitochondrial, membrane potential ( ⁇ m ) from 5% in the control to 80%, which indicates a strong activation of the mitochondria during the apoptotic process indicates (Fig. 5).
- the compound racx4 (FIG. 6) shows an apoptosis of approximately 42% at a concentration of 100 ⁇ g / ml.
- the usability of the substances according to the invention for the therapy of various malignant diseases of the hematopoietic system has been successfully tested in vitro on cells from patients with different diseases.
- the substances of general structural formula 2 are thus effective as agents against certain tumor cells, particularly those of childish ALL, but also against other malignant diseases of different origins.
- the medicaments according to the invention can be administered topically or intravenously.
- the substances are administered in the concentration range between 0.1 to 100 ⁇ g / ml, based on the patient's blood volume.
- the substances are rubbed into the diseased skin in a concentration of 0.1 to .5% by weight, based on the finished preparation.
- racemic precursors of the rac-100 type are prepared by known methods (see WO 02/080923 and Velcicky et al., 2002).
- To produce the optically active compounds as explained in WO 02/080923, either the chirogenic step of the synthesis (Pauson-Khand reaction) is carried out enantioselectively, or a racemate resolution is carried out at a subsequent stage.
- the following reactions can be carried out by individual enantiomers or by the racemate.
- a solution of lOOa-e (lmmol) and PPTS (76 mg, 300 ⁇ mol, 30 mol%) in absolute acetone (10 ml) was stirred under reflux for 3 h.
- IR (ATR, cm “1 ): 3177 (w, NH), 3050 (w, NH), 2954 (m, CH), 2864 (m, C-
- the compound (-) - 113b was obtained as a colorless oil (48 mg, 99% yield) according to the general experimental procedure.
- the compound (-) - 113d-l was obtained according to the general experimental procedure as a mixture of the protected and free alcohol, which was used directly in the following reaction to remove the protective group.
- IR (ATR, cm “1 ): 3330 (bm, OH), 3199 (m, NH), 2954 (m, CH), 2863 (m,
- the compound (-) - 159c-1 was obtained as a light yellow liquid according to the general experimental procedure (23 mg, 79% yield).
- Rho-GDI 2 The GDP dissociation inhibitor, D4-GDI (Rho-GDI 2), but not the homologous Rho-GDI 1, is cleaved by caspase-3 during drug-induced apoptosis, Biochem. J. 346, 777-783.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10305575 | 2003-02-10 | ||
| DE10305575 | 2003-02-10 | ||
| PCT/EP2004/001212 WO2004069847A1 (de) | 2003-02-10 | 2004-02-10 | Nukleosidanaloga mit apoptose-induzierenden eigenschaften zur therapie durch hoch-proliferierende zellen verursachter erkrankungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1592697A1 true EP1592697A1 (de) | 2005-11-09 |
Family
ID=32841633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04709602A Withdrawn EP1592697A1 (de) | 2003-02-10 | 2004-02-10 | Nukleosidanaloga mit apoptose-induzierenden eigenschaften zur therapie durch hoch-proliferierende zellen verursachter erkrankungen |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1592697A1 (de) |
| WO (1) | WO2004069847A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8093245B2 (en) | 2006-12-14 | 2012-01-10 | Lexicon Pharmaceuticals, Inc. | 4-amino-1H-pyrimidin-2-one based compounds, compositions comprising them and methods of their use |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE271871T1 (de) * | 2001-04-07 | 2004-08-15 | Hans-Guenther Schmalz | Substanzen zur therapie von erkrankungen, die durch hochproliferierende zellen verursacht werden |
-
2004
- 2004-02-10 EP EP04709602A patent/EP1592697A1/de not_active Withdrawn
- 2004-02-10 WO PCT/EP2004/001212 patent/WO2004069847A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004069847A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004069847A1 (de) | 2004-08-19 |
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