WO1997038999A1 - Acridone-derived compounds useful as antineoplastic and antiretroviral agents - Google Patents
Acridone-derived compounds useful as antineoplastic and antiretroviral agents Download PDFInfo
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- WO1997038999A1 WO1997038999A1 PCT/US1997/007070 US9707070W WO9738999A1 WO 1997038999 A1 WO1997038999 A1 WO 1997038999A1 US 9707070 W US9707070 W US 9707070W WO 9738999 A1 WO9738999 A1 WO 9738999A1
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- Prior art keywords
- temacrazine
- compounds
- cells
- hiv
- double
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/06—Peri-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/18—Antivirals for RNA viruses for HIV
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to acridone- derived compounds which are bisimidazoacridones, bistriazoloacridones and hybrid molecules having both imidazoacridone and triazoloacridone moieties. These compounds are useful as anti-neoplastic and anti- 10 retroviral agents.
- the above compounds have a tetracyclic planar chromophore bearing one side chain containing an
- Bifunctional compounds also have been studied as potential antitumor agents based upon the ability of _ acridones and other planar aromatic compounds to interact with DNA by intercalation.
- This invention relates to a novel class of acridine-based compounds and their use as antineoplastic agents and as antiretroviral agents. It has further been found that the bismidazocridones, the bistriazoloacridones and hybrid molecules disclosed in U.S. Pat. No. 5,508,289 are useful as antiretroviral agents.
- the present invention relates to compounds having the following general formula (I) :
- Rl and R2 are independently -H, -OH, amino, alkylamino, dialkylamino, alkoxy, alkyl, haloalkyl or halogen; n is 2 to 6, X and X' are independently -N or - N0 2 ; Y and Y' are independently -N or -CH, or -H; and the double-slash represents a double bond or no bond; such that when X or X' is -N, Y or Y' is -CH or -N, and the double-slash is a double bond, and when X or X' is -N0 2 , Y or Y' is -H, and the double slash is no bond.
- the present invention also provides a pharmaceutical composition comprising at least one of the above compounds and a pharmaceutically acceptable carrier.
- the present invention further provides a method for treating a neoplastic cell growth in a subject in need of such treatment which comprises administering to the subject an amount of the pharmaceutical composition above effective to treat the neoplastic cell growth.
- the present invention still further provides a method for treating retroviral infections in a population of cells including human cells comprising contacting the cell population or administering to a subject having retroviral infected cells an effective amount of at least one compound of the formula (I) .
- Also included within the scope of the present invention is a method for protecting a population of cells including human cells against retroviral pathogenesis comprising contacting or treating said cells with an anti ⁇ retroviral effective amount of at least one compound according to formula (I) .
- a yet still further aspect of the present invention provides a method of treating retroviral infections in a population of cells including human cells comprising administering and/or contacting the cells of a subject having retroviral infected cells an effective amount of at least one compound of formula (II) :
- R is H, alkyl, or a grouping which makes the compound function as a prodrug; n is 2 to 6; and R,, R 2 , X, Y, X' or Y' and the double dash is as defined hereinabove for formula (I) .
- Figure 1 Schematic showing the preparation of a symmetrical compound.
- Figure 2 Schematic showing preparation of a bistriazoloacridone compound.
- alkyl alone or in combination, means a straight-chain or branched-chain alkyl radical containing from 1 to about 8, preferably from 1 to about 6, carbon atoms.
- examples of such radicals include methyl, ethyl, n-propyl, isopropyl, n- butyl, isobutyl, sec-butyl, tert-butyl, amyl, isoamyl, hexyl, octyl and the like.
- the alkyl radical may be optionally substituted by substituents which are set forth hereinbelow.
- alkoxy alone or in combination, means an alkyl ether radical wherein the term alkyl is as defined above. Examples of suitable alkyl ether radicals include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, iso-butoxy, sec-butoxy, tert-butoxy and the like.
- halogen or halo means fluorine, chlorine, bromine or iodine.
- haloalkyl means an alkyl radical having the significance as defined above wherein one or more hydrogens are replaced with a halogen.
- haloalkyl radicals include chloromethyl, 1-bromethyl, fluoromethyl, difluoromethyl, trifluoromethyl, 1,1,1- trifluroethyl and the like.
- the possible optional substituents mentioned in the hereinabove generic description include at least one alkyl, cycloalkyl, aryl, aralkyl, alkaryl, heteroaryl, alkoxy, halogen, hydroxy, amino, nitro, cyano, haloalkyl wherein the optional substituents may also be optionally substituted and the radicals which are optionally substituted may be singly or multiply substituted with the same or different optional substituents.
- the present invention relates compounds having the general formula I: wherein Rl and R2 are each independently -H, -OH, amino, alkylamino, dialkylamino, alkoxy, alkyl, haloalkyl or a halogen atom; n is 2 to 6; X and X and X' are independently -N or -N0 2 ; Y and Y' are independently -N or -CH, or -H; and the double-slash represents a double bond or no bond; such that when X or X' is -N, Y or Y' is -CH or -N, and the double-slash is a double bond, and when X or X' is -N0 2 , Y or Y' is -H, and the double slash is no bond.
- R, and R 2 are each independently -H, -OH, -NH 2 , C,-C 6 alkylamino, C,-C 6 dialkylamino, C,-C 6 -alkyl, fluorine, chlorine or bromine.
- the compounds of the present invention may be employed in the form of free bases or pharmaceutically acceptable acid addition salts thereof.
- suitable acids for salt formation are, methanesulfonic, sulfuric, hydrochloric, phosphoric, acetic, citric, lactic, ascorbic, maleic, and the like.
- the compounds of the present invention are present in the form of methanesulfonates, such as dimethanesulfonate, or other salts, such as dihydrochloride, which can be hydrated to variable extent.
- the compounds of formulas I and II may be employed in prodrug form. Prodrug forms are known to those skilled in the art and the most effective such form can be determined by the skilled artisan.
- the present invention also relates to pharmaceutical compositions comprising at least one of the formula (I) and/or formula (II) , and a pharmaceutically acceptable carrier.
- the carrier must be "acceptable” in the sense of being compatible with the other ingredients of the formulation and not deleterious to the recipient thereof.
- the compound may be formulated with one or more pharmaceutically acceptable diluents or carriers, and optionally, any other ingredients which may be therapeutic per se, which are synergistic with the compound of the present invention.
- concentration of the compound present in the formulation will depend upon the choice of carrier as well as the results desired.
- suitable pharmaceutical carriers include lactose, sucrose, starch, talc, magnesium stearate, crystalline cellulose, methyl cellulose, carboxymethyl cellulose, glycerin, sodium alginate, gum arabic, powders, saline, water, among others.
- the choice of carrier will depend upon the route of administration.
- the formulations may conveniently be presented in unit dosage and may be prepared by methods well-known in the pharmaceutical art, by bringing the active compound into association with a carrier or diluent, as a suspension or solution, and optionally one or more accessory ingredients, e.g. buffers, flavoring agents, surface active agents, and the like.
- the compound is combined with a sterile aqueous solution which is preferably isotonic with the blood of the recipient.
- a sterile aqueous solution which is preferably isotonic with the blood of the recipient.
- Such formulations may be prepared by dissolving solid active ingredient in water containing physiologically compatible substances such as sodium chloride, glycine, and the like, and having a buffered pH compatible with physiological conditions to produce an aqueous solution, and rendering said solution sterile.
- the formulations may be present in unit or multi-dose containers such as sealed ampoules or vials.
- the formulation may be presented as capsules, tablets, powders, granules or a suspension, with conventional additives such as lactose, mannitol, corn starch or potato starch; with binders such as crystalline cellulose, cellulose derivatives, acacia, corn starch or gelatins; with disintegrators such as corn starch, potato starch or sodium carboxymethyl-cellulose; and with lubricants such as talc or magnesium stearate.
- Formulations suitable for parenteral administration conveniently comprise a sterile aqueous preparation of the active compounds which is preferably made isotonic. Preparations for injections may also be formulated by suspending or emulsifying the compounds in non-aqueous solvent, such as vegetable oil, synthetic aliphatic acid glycerides, esters of higher aliphatic acids or propylene glycol.
- the present invention further provides a method for treating a neoplastic cell growth in a subject in need of such treatment which comprises administering to the subject an amount of the pharmaceutical composition above effective to treat the neoplastic cell growth.
- treatment includes the partial or total inhibition of neoplastic cell growth or retroviral growth, proliferation and/or spread, as well as the partial or total destruction of the neoplastic cells or retroviruses and/or retrovirally-infected cells.
- subject includes a human or animal subject diagnosed as having cancer or a retroviral infection.
- the administration may be affected by means known to those skilled in the art such as oral, rectal, topical intravenous, subcutaneous, intramuscular, or intraperitoneal routes of administration.
- the dosage form and amount can be readily established by reference to known antineoplastic treatment or prophylactic regimens. In general, however, the dosage of the compound will be within the range of about 0.1 ⁇ g/kg to about 100 mg/kg. The actual dose will depend upon the route of administration, the pharmacokinetic and toxicological properties of the individual compound, as well as the results desired.
- the compounds of the present invention of formulas I and II are useful in treating retroviral infections in a population of cells including human and animal cells comprising contacting the cell population or administration to a subject having retrovirally infected cells an effective amount of at least one compound of the formulas I and/or II.
- the compounds of the present invention including those of formulas I and II may be functional in many retroviral systems to curb the spread of infective virus.
- retroviruses which may be inhibited by the compounds of the present invention include, but are not limited to, HTLV-I, HTLV-II, BLV, EIAV, FIV, SIV, STLV and Visna virus.
- Initial experiments involving compounds of formulas I and II revealed that these substances inhibited both the integration and the disintegration steps in an in vi tro experiment which utilized the full length purified HIV-1 integrase. These compounds and several others were examined in an anti-viral assay involving peripheral blood lymphocytes which had been infected with HIV-1.
- formulations disclosed hereinabove are effective and relatively safe medications for treating HIV infections, the possible concurrent administration of these formulations with other antiviral medications or agents to obtain beneficial results is not excluded.
- antiviral medications or agents include soluble CD4, thalidomide, dideoxyinosine, dideoxythymine, zidovudine, dideoxycytidine, gancyclovir, acyclovir, phosphonoformate, amatradine, ribavarin, antiviral interferons (e.g. cx- interferon, or-interferon, or interleukin-2) or aerosol pentamidine, and other substances used in anti-HIV therapy.
- antiviral interferons e.g. cx- interferon, or-interferon, or interleukin-2
- aerosol pentamidine e.g. cx- interferon, or-interferon, or interleukin-2
- Treatment of infected cells to inhibit virus activity may be for a specific period of time or may be continuous.
- Virus activity may be measured by monitoring levels of viral protein, such as p24, or by measuring reverse transcriptase levels, or by monitoring virus protein activity by 35 S-met pulse-chase labelling and immunoprecipitation experiments, or by other methods which are well known by one of skill in the art. (Kayeyama, S., et al. (1994) , AIDS Res . and Human Retroviruses, 10:735- 745) .
- the acridone is reacted with an equivalent amount of a suitable piperidine derivative 2 to afford the bisnitroacridone 3, which is then reacted with formic acid and stannous chloride to give the final bisimidazoacridone Symmetrical drugs of the triazolo series were prepared according to Figure 2.
- An acridone is reacted with an excess of piperidine derivative in such a way that the product 7 was formed.
- Precipitate was separated by filtration, washed with water, transferred into 200 mL of 1% water 5 solution of methanesulfonic acid and stirred at room temperature for 1 hour. Undissolved material was filtered off. The filtrate was made alkaline with an aqueous solution of sodium hydroxide. The precipitate of the free base was separated by filtration, washed with water and 0 then crystallized twice from boiling DMA to give 3.84g
- the activity of compound (4) was tested against several tumor xenografts in vi tro.
- the experiments was carried out on cell lines derived from these tumors, utilizing a standard clonogenic assay protocol.
- the mean IC 70 i.e. the concentration of the chemical which resulted in 70% killing of the tumor cells
- the gastric carcinoma GFX 251/14 was sensitive at the median dose, but the mammary tumor MACL (MCF7X/13) required over twice the median dose.
- the melanoma MEXF (514/12) was completely insensitive to the drug, as was the renal carcinoma RXF (1220/5) .
- the prostate cancer cell lines PRXF (PX2M/27 and DU145X/2) were very sensitive to the drug, especially PC3M which required less than 1 nanogram/mL to achieve IC 70 .. The results are shown in figure 3.
- FIGS 8 and 9 demonstrate the cytoprotective activity of WMC50 and WHC70, respectively, in this cell line. While both compounds are clearly cytoprotective at very low concentrations, it is clear that WMC-70 is likely to be a better drug because of its superior therapeutic index.
- the concentration wherein WMC-70 inhibits the cytotoxic effect of the virus to 50% (the EC50 value) is less than 1 nanomolar
- the drug kills 50% of the cells at greater than micromolar concentrations.
- the corresponding therapeutic index for WMC50 is about 100- 200, which is quite acceptable.
- WMC-70 appears to affect post- transcription events in the virus. Treatment of cells in which all of the virus is integrated by the drug, reveals that apparently normal viral gag p55 polyprotein is formed, but it is not processed further, i.e., no p24 can be detected. While the inhibition of integration appears to be the principal mechanism by which this compound exerts its antiviral activity, there are perhaps other mechanisms which are also involved in the therapeutic action of this drug, and by extension, of other antiviral drugs of this class.
- WMC-70 is also referred to herein as "NSC 682405" or "temacrazine”.
- Temacrazine inhibited 3' -processing and stand transfer activity in an in vi tro assay using purified oligomers and recombinant HIV-1 integrase in a concentration dependent manner with an EC 50 between 10 and 100 nM (Table IA) .
- the XTT cytoprotection refers to data from the screening assay.
- the p7NC ZF assay measured the percent reduction in relative fluorescence units (RFU) of the zinc finger after treatment of the p7NC protein with 25 ⁇ M of each compound for 10 min.
- Trp 37 (Decrease in NI 145 (NSC 624151) RFU/10 min)
- I JO are the drug concentrations inhibiting 50% of the indicated activity. Positive controls for individual assays were; Attachment: Farmatalia IC JO 1-1 ⁇ M (D.J. Clanton et al., J. Acquir. Immune Defic. Syndr. 5:771 (1992)), Reverse transcriptase inhibition: rAdT Template/primer- AZTTP 27 nM, rCdG Template/primer-UC38 6 nM (J.P. Bader et al., Proc. Natl. Acad. Sci.
- Ul cells were used that are latently infected with two copies of HIV-1 proviral DNA.
- the high level expression of virus production in these Ul cells can be stimulated by certain factors, such as TNF- ⁇ . Ul cells were stimulated with TNF- ⁇ for 24 hours, after which were added various concentrations of temacrazine, and the cultures were allowed to incubate for 48 additional hours. At that time, the cells were evaluated for viability and for their content of viral protein synthesis and processing, while the cell-free supernatant was evaluated for viral p24 content and for the infectious titer of released virions.
- Figure 11 shows that the virus production (p24) was inhibited at concentrations below 4 nM, and that the released viral particles were non- infectious (expressed as infectious units per ml, "IU/ml") . Cell viability was diminished above 30 nM with these Ul cells.
- Figure 12 inspection of the viral proteins by Western blotting with p7 and p24 antisera (Figure 12) revealed that the Gag precursor polyprotein (Pr55 g8g ) was synthesized but was not processed by the HIV-l protease into mature viral proteins (p24 and p7NC) .
- Table 1 was providing accurate findings, the action of temacrazine in the Gag processing assay was evaluated.
- purified recombinant HIV-1 protease enzyme was pretreated with the test reagent for one hour at 37°C, and then exposed the recombinant Pr55 8ag precursor polyprotein to the treated enzyme.
- the protease alone was able to efficiently process the precursor.
- pretreatment of the enzyme with the compound had no inhibitory effect.
- Temacrazine demonstrated potent anti-HIV-1 activity in models of acute infection against lymphocytotropic HIV-1 strains in proliferating cells and against monocytotropic HIV-1 strains in non-proliferating normal cells. Moreover, the compound exerted an antiviral effect on previously infected cells. The exact nature of the late phase effect is under investigation. Nevertheless, temacrazine potently inhibited the production of new infectious virus from previously infected cells. This is a very important action of the compound given that any means for reducing the viral burden in HIV-1 infected persons would result in decreases in subsequent rounds of infection in vivo. In addition, the ability of the compound to directly inactivate virions would be of great significance, since this would effectively reduce the infectious titer in plasma and prevent later rounds of replication and seeding of the virus.
- Initiation and regulation of HIV-1 transcription requires a complex series of interactions with cellular transcription factors, such as NFkB, SP-1 and AP-1, and the participation of cellular factors in the transcriptional complex.
- cellular transcription factors such as NFkB, SP-1 and AP-1
- the post- integrative model used here requires TNF ⁇ stimulated Ul and ACH-2 cells, this model requires not only the participation of the NFkB transcriptional complex, and also components of the TNF ⁇ signaling pathway.
- LTR-directed chloramphenicol acetyltransferase (CAT) activity was measured in BF-24 cells.
- BF-24 cells are derived from the THP-1 monocytic cell line and carry a stably integrated CAT gene under the transcriptional control of the HIV-1 LTR (S. Schwartz, et al., Proc . Natl . Acad. Sci . USA 86:7200 (1989); B.K. Felber, et al. , Science 239:184 (1988)) .
- the LTR in this monocytic cell line is inducible by IL-6, PMA and TNF ⁇ , and produces enzymatically active chloramphenicol transferase ("CAT").
- Induction of CAT enzyme activity by TNF ⁇ occurs in the absence of any viral components, and as a result will identify mechanisms of action that are virus regulatory protein independent.
- BF- 24 cells were stimulated with TNF ⁇ and treated with temacrazine for 24 h, and cellular proteins were then collected for determination of CAT enzyme activity ( Figure 14) .
- CAT activity was determined using a fluorescent Bodipy conjugated chloramphenicol after 18 h of reaction with 50 ⁇ g of protein extract containing Acetyl CoA.
- Figure 14 shows that BF-24 cells alone have a low intrinsic CAT activity that is inducible by at least 10 fold by TNF ⁇ . Treatment of BF-24 cells with up to 5 ⁇ M temacrazine did not significantly alter CAT induction. Similarly, AZT which does not effect temacrazine' s activity because reverse transcription is not required for CAT expression, was inactive. Even though, these data argue against a non-specific transcriptional/translational effect, specific experiments were conducted to verify this hypothesis.
- Example 8 Temacrazine completely inhibited the expression of unspliced or singly spliced mRNA at 500 and 50 nM when given either prior to or 24 h after the TNF ⁇ induction. Similar results were seen when temacrazine and TNF ⁇ were added simultaneously. In contrast, temacrazine did not alter the expression of HIV-1 multispliced transcripts when using RT-PCR primers designed to detect all multi- spliced rev independent mRNAs ( Figure 15) .
- PBGD Porphobilinogen deaminase
- FIG 16 shows that upon stimulation with TNF ⁇ , HIV-1 specific mRNA expression in U-l cells increases dramatically.
- treatment with 1 nM temacrazine resulted in a decrease in single spliced and unspliced mRNA with no apparent decrease in the multi- spliced mRNA.
- RRE rev-responsive element
- Nude mice were implanted with hollow fibers containing HIV-I RF infected peripheral blood mononuclear cells and dosed with temacrazine (total dose 25 mg/kg).
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Abstract
Description
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Priority Applications (8)
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CA002250863A CA2250863C (en) | 1996-04-12 | 1997-04-09 | Acridone-derived compounds useful as antineoplastic and antiretroviral agents |
DE69709857T DE69709857T2 (en) | 1996-04-12 | 1997-04-09 | ACRIDONE DERIVATIVES AS ANTINEOPLASTIC AND ANTIRETROVIRAL AGENTS |
DK97922508T DK0892801T3 (en) | 1996-04-12 | 1997-04-09 | Acridone-derived compounds useful as antineoplastic and antiretroviral agents |
AT97922508T ATE211471T1 (en) | 1996-04-12 | 1997-04-09 | ACRIDONE DERIVATIVES AS ANTINEOPLASTIC AND ANTIRETROVIRAL AGENTS |
EP97922508A EP0892801B1 (en) | 1996-04-12 | 1997-04-09 | Acridone-derived compounds useful as antineoplastic and antiretroviral agents |
AU28157/97A AU725629B2 (en) | 1996-04-12 | 1997-04-09 | Acridone-derived compounds useful as antineoplastic and antiretroviral agents |
US09/155,141 US6187775B1 (en) | 1996-04-12 | 1997-04-09 | Acridone-derived compounds useful as antineoplastic and antiretroviral agents |
JP53745697A JP4121151B2 (en) | 1996-04-12 | 1997-04-09 | Compounds derived from acridone useful as anti-neoplastic and antiretroviral agents |
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WO1999006372A1 (en) * | 1997-08-01 | 1999-02-11 | Universita' Degli Studi Di Camerino | Bis-acridinecarboxamides having antitumor activity |
WO2001066545A2 (en) * | 2000-03-07 | 2001-09-13 | The Government Of The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | 1,8-NAPHTHALIMIDE IMIDAZO[4,5,1-de]ACRIDONES WITH ANTI-TUMOR ACTIVITY |
WO2004046115A1 (en) * | 2002-11-20 | 2004-06-03 | Japan Tobacco Inc. | 4-oxoquinoline compounds and utilization thereof as hiv integrase inhibitors |
WO2007092436A2 (en) * | 2006-02-08 | 2007-08-16 | Xanthus Pharmaceuticals, Inc. | Compounds for treating inflammatory disorders, demyelinating disorders and cancers |
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US7531554B2 (en) | 2004-05-20 | 2009-05-12 | Japan Tobacco Inc. | 4-oxoquinoline compound and use thereof as HIV integrase inhibitor |
US7635704B2 (en) | 2004-05-20 | 2009-12-22 | Japan Tobacco Inc. | Stable crystal of 4-oxoquinoline compound |
US8383819B2 (en) | 2006-03-06 | 2013-02-26 | Japan Tobacco Inc. | Method for producing 4-oxoquinoline compound |
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JP2010509241A (en) * | 2006-11-07 | 2010-03-25 | アメリカ合衆国 | Self-aggregating nanoparticles composed of transmembrane peptides and their use for specific intratumoral delivery of anticancer agents |
WO2008064011A1 (en) | 2006-11-13 | 2008-05-29 | The Government Of The U.S. Of America As Represented By The Department Of Veterans Affairs | Acridone compounds |
US8598354B2 (en) | 2008-12-05 | 2013-12-03 | University Of South Florida | Compounds having antiparasitic or anti-infectious activity |
EP3070078B1 (en) * | 2015-03-20 | 2017-10-04 | Politechnika Gdanska | Asymmetric bis-acridines with antitumor activity and use thereof |
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- 1997-04-09 DE DE69709857T patent/DE69709857T2/en not_active Expired - Lifetime
- 1997-04-09 EP EP97922508A patent/EP0892801B1/en not_active Expired - Lifetime
- 1997-04-09 PT PT97922508T patent/PT892801E/en unknown
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WO2004046115A1 (en) * | 2002-11-20 | 2004-06-03 | Japan Tobacco Inc. | 4-oxoquinoline compounds and utilization thereof as hiv integrase inhibitors |
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WO2007092436A2 (en) * | 2006-02-08 | 2007-08-16 | Xanthus Pharmaceuticals, Inc. | Compounds for treating inflammatory disorders, demyelinating disorders and cancers |
WO2007092436A3 (en) * | 2006-02-08 | 2008-12-18 | Xanthus Pharmaceuticals Inc | Compounds for treating inflammatory disorders, demyelinating disorders and cancers |
US8383819B2 (en) | 2006-03-06 | 2013-02-26 | Japan Tobacco Inc. | Method for producing 4-oxoquinoline compound |
WO2008016661A3 (en) * | 2006-08-02 | 2008-03-20 | Xanthus Pharmaceuticals Inc | Morpholino compounds for treating inflammatory and demyelinating diseases and cancers |
WO2008016661A2 (en) * | 2006-08-02 | 2008-02-07 | Xanthus Pharmaceuticals, Inc. | Morpholino compounds for treating inflammatory and demyelinating diseases and cancers |
Also Published As
Publication number | Publication date |
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DE69709857T2 (en) | 2002-08-29 |
US6541483B2 (en) | 2003-04-01 |
DK0892801T3 (en) | 2002-04-22 |
US6187775B1 (en) | 2001-02-13 |
EP0892801B1 (en) | 2002-01-02 |
PT892801E (en) | 2002-06-28 |
ES2171260T3 (en) | 2002-09-01 |
JP4121151B2 (en) | 2008-07-23 |
EP0892801A1 (en) | 1999-01-27 |
AU2815797A (en) | 1997-11-07 |
DE69709857D1 (en) | 2002-02-28 |
JP2000508662A (en) | 2000-07-11 |
AU725629B2 (en) | 2000-10-19 |
US20010009914A1 (en) | 2001-07-26 |
ATE211471T1 (en) | 2002-01-15 |
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