WO2008144865A2 - Process for the preparation and pharmaceutical formulations for 4-quinolinones and quinolines and use thereof - Google Patents

Process for the preparation and pharmaceutical formulations for 4-quinolinones and quinolines and use thereof Download PDF

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WO2008144865A2
WO2008144865A2 PCT/BR2008/000151 BR2008000151W WO2008144865A2 WO 2008144865 A2 WO2008144865 A2 WO 2008144865A2 BR 2008000151 W BR2008000151 W BR 2008000151W WO 2008144865 A2 WO2008144865 A2 WO 2008144865A2
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group
alkyl
groups
accordance
phenyl
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PCT/BR2008/000151
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WO2008144865A3 (en
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Arlene Gonçalves CORRÊA
Patrícia Tambarussi BARALDI
Andreimar Martins Soares
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Fundação Universidade Federal De São Carlos
Universidade De São Paulo
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Priority to US12/602,347 priority Critical patent/US20100196476A1/en
Priority to EP08748073A priority patent/EP2167468A4/en
Priority to CA002689056A priority patent/CA2689056A1/en
Publication of WO2008144865A2 publication Critical patent/WO2008144865A2/en
Publication of WO2008144865A3 publication Critical patent/WO2008144865A3/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/20—Oxygen atoms
    • C07D215/22—Oxygen atoms attached in position 2 or 4
    • C07D215/233—Oxygen atoms attached in position 2 or 4 only one oxygen atom which is attached in position 4
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00—Drugs for disorders of the respiratory system
    • A61P11/10—Expectorants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/02—Immunomodulators
    • A61P37/06—Immunosuppressants, e.g. drugs for graft rejection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/08—Antiallergic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P39/00—General protective or antinoxious agents
    • A61P39/02—Antidotes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P7/00—Drugs for disorders of the blood or the extracellular fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P7/00—Drugs for disorders of the blood or the extracellular fluid
    • A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P7/00—Drugs for disorders of the blood or the extracellular fluid
    • A61P7/04—Antihaemorrhagics; Procoagulants; Haemostatic agents; Antifibrinolytic agents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D215/54—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3
    • C07D215/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3 with oxygen atoms in position 4

Definitions

  • the present invention refers to the field of 4-quinolinones and derived quinolines, to be used in pharmaceutical formulations as synthetic protease inhibitors, such as haemorrhagic metalloprotease resulting from bites of the snakes of the Bothrops genus and other applications.
  • Snake venoms comprise complex protein mixtures including phospholipases A 2 , myotoxins, haemorrhagic metalloprotease, coagulant serine protease, cytotoxins, cardiotoxins and others.
  • the pathophysiology of poisoning by snakes involves a complex series of events that depend on the combined action of these components. (Gutierrez, J. M. "Comprendiendo los venenos de serpientes: 50 a ⁇ os de investigaations en America Latina" [Understanding snake venoms: 50 years of research in Latin America]. Rev. Biol. Trop. , 50:377, 2002).
  • phospholipases A 2 and proteases are abundantly present in snake venom, as well as having a digestive role in the hydrolysis of phospholipids and proteins. These enzymes may present a broad variety of pharmacological activities, such as neurotoxicity, myotoxicity as well as oedematogenic, haemorrhagic and coagulant activities, amongst others (Gutierrez, J. M. & Lomonte, B. "Phospholipase A 2 , myotoxins from Bothrops snake venoms". Toxicon, 33:1405, 1995.; Ownby C. L. J. "Structure, function and biophysical aspects of the myotoxins from snake venoms". Toxicol.
  • Patent application US2004/0242639 presents the activity of a phospholipase C inhibitor as therapy for inflammatory diseases.
  • quinolinones with N-heteroamino in position 5 of the quinolinone ring described in publication WO94/10163 and the corresponding patents US5646163 and Brazilian patent applications BR 9307347 and BR 9507553 ⁇ present antimicrobial activity, while the quinolinones substituted in position 3 described in this invention present inhibitor activity for phospholipase C.
  • Patent document EP0304158 claims quinolones possessing antibacterial activity with variations of the substitutes in positions 2 and 3, while patent application JP2000273086 describes quinolinones only substituted in position 2.
  • Patent document WO01/53266 describes type 4-quinolinone structures substituted in position 3 that are useful for treating diseases associated to white blood cell disorders such as autoimmune and inflammatory diseases but, however, are distinct from the structures proposed in the present invention.
  • the international publication WO2004/007461 describes a method for the treatment or prophylaxis of a neurological condition - more specifically neurodegenerative disorders - that consists administering an effective quantity of a composition of the formula (I) to a patient requiring treatment.
  • the standard skeleton of the molecule that is the object of that publication is similar to the compounds of the present invention but, however, despite the many variations of the substitutes described, no skeleton suggests or describes compounds similar to the compounds described herein.
  • patent US5,444,071 and patent application US2006/0217322 describe compounds having pharmaceutical activity with basic skeletons similar to those of the compounds proposed herein but none of these structures anticipates those of the present invention.
  • Patent US5,102,892 describes compounds with a quinoline structure similar to those described in the present invention but, however, varying the position 4- from Oxygen to Nitrogen.
  • Patents US4,859,669, US6,271,416, CN1594295, US6,855,726, patent application US2005/0054672, publications EP1574501, EP1097139B1, EP1270006 and patent application US 2005/0209247 describe 2-quinolinones structurally distinct from those object of the present invention.
  • Patent documents EP1245566 and US6,645,983 describe 4- quinolinones but, however, the structure described does not include a substitute in position 2 and the biological activities are respectively described as being anti-microbial and intended for the treatment of cancers.
  • Publication EP0251308 describes a fluoroquinolinone as substitute in positions 2 and 3 of the quinolinone system.
  • R 2 is H or S linked to the N of the ring by an ethylene bridge.
  • R 1 and R 2 are selected independently of each other, with H, OH, an alkyl group of Ci - C 4 , an alkoxy group of Ci - C 5 , a -OCO-R 7 group, and a group derived from a saccharide, optionally R 1 and R 2 together forming a methylenedioxy group, a phenyl group or a phenyl group substituted in 1 and 3 with groups selected from H, an alkoxy group in Ci - C 4 , a -OCOR 7 group, a -0-SO 2 -R 7 group, halogen, an alkyl or CF 3 group, and -NR 7 R 8 group, in which R 7 and R 8 are selected independently of each other, from hydrogen, alkyl group in C x - C 5 , alkenyl group, alkyl phenyl group (Ci - C 4 ), dimethylamine, rings with 4 - 6 member heterocycles, optionally with one or more heteroatoms selected from oxygen,
  • R 3 is selected from H, alkyl group in C x - C 4 , alkenyl group, a - CO-R 8 group and a -A-R 9 group, -CO 2 R 9 ' group in which R 9 ' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, - NH 2 , -CHCH 2 CH 2 ,- Rs is an alkyl group in C x -C 4 ;
  • A is an alkylene group in C 1 - C 4 ;
  • R 9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur and nitrogen, CN, hydroxyl, -COORi 0 and CONR H R I2 groups, a -NR i3 R 14 group, a -COR 15 group and a OSO 2 R 16 group;
  • Rio / Rii/ Ri 2 / Ri 4 a n ⁇ d R15 are independently selected from hydrogen, alkyl groups in Ci - C 4 , halogen and alkyl phenyl group (Ci - C 4 )
  • Ri 6 is selected from the phenyl group and the alkyl phenyl group (Ci - C 4 )
  • R 4 OH, halogens, alkoxy group in Ci - C 6 , alkoxy benzyl group, - CO-Ri 7 in which Ri 7 is alkyl C x - C 6 or p-methoxy benzyl, -0-SO 2 -R 7 ' in which R 7 ' is an alkyl group or CF 3 group, group derived from saccharide
  • R 5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups Ci - C 4 , a - OCOR 7 group, a -0-
  • the compounds of Formula (I) produce the quinolines of Formula (II) in the presence of a K 2 CO 3 base and alkylating agents:
  • R 5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alcoxy C 1 - C 4 groups, a -OCOR 7 group, a -0-SO 2 -R 7 ' group in which R 7 ' is an alkyl group or CF 3 group, benzylamine group, and group derived from a saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-
  • R 3 is selected from H, alkyl group in Ci - C 4 , alkenyl group, a -
  • R 9 ' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, -NH 2 , -CHCH 2 CH 2 ;
  • Rs is an alkyl group in Ci-C 4 ;
  • A is an alkylene group in C x - C 4 ;
  • R 9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur, nitrogen, CN, hydroxyl, -COORi 0 and CONRnR 12 groups, a - NRi 3 R 14 group, a -CORi 5 group and a OSO 2 Ri 6 group;
  • Rio, Rn, Ri 2/ Ri 4 and R i5 are independently selected from hydrogen, alkyl groups in C x - C 4 , halogen and alkyl phenyl group (C x - C 4 ), Ri 6 is selected from the phenyl group and the alkyl phenyl group (Ci - C 4 );
  • R 4 OH, halogens, alkoxy group in Ci - C 6 , alkoxy benzyl group, - CO-Ri 7 in which R i7 is alkyl Ci - C 6 or p-methoxy benzyl, -0-SO 2 -R 7 ' in which R 7 ' is an alkyl group or CF 3 group, group derived from saccharide;
  • R 5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups Ci - C 4 , a - OCOR 7 group, a -0-SO 2 -
  • the invention also refers to a process for preparing the compounds of formula (I) and formula (II), with the above mentioned processes comprising the stages of: a) make anilin (compound 3) or 4-methoxyanilin (compound 4) react with dimethyl acetylenedicarboxylate (DMAD) in methanol at 55°C, obtaining 2- (phenylamine) -dimethyl maleate or 2- anilin-2-dimethyl butenodioate (compound 5) or 2- (4- methoxyphenylamine) -dimethyl maleate or 2- (4-methoxyanilin) - 2- dimethyl butenodioate (compound 6) .
  • DMAD dimethyl acetylenedicarboxylate
  • R H 7
  • R H 6
  • R OCH3 8
  • OCH 3 make compounds 7 and 8 react with the borane-dimethyl sulphide (BH 3 -SMe 2 ) complex, obtaining compounds 1, 2- hydroxymethyl-4-quinolinone and 2, 2- hydroxymethyl-6- methoxy-4-quinolinone .
  • the invention provides compounds 1, 2, 10, 11 and the general formula (I) and (II) as being protease, lipase, phospholipase and enzyme inhibitors.
  • the invention provides compounds 1, 2, 10, 11 and the general formula (I) and (II) to be used in the broad aspect of inflammatory, antirheumatic, analgesic, autoimmune, antivenin, antithrombotic, anti-allergic and expectorant activities, as well as white blood cell disorders and haemostatic system disorders amongst other possible pharmaceutical applications.
  • compositions, formulations or medicines containing effective amounts of compounds 1, 2, 10, 11 and the general formula (I) and (II) or their pharmaceutically acceptable salts.
  • compositions including the compounds 1, 2, 10, 11 and the general formula (I) and (II) to be used in the broad aspect of inflammatory, antirheumatic, analgesic, autoimmune, antivenin, antithrombotic, anti-allergic and expectorant activities, as well as white blood cell disorders and haemostatic system disorders amongst other possible pharmaceutical applications.
  • the invention also provides pharmaceutical formulations prepared in the form of pills, coated pills, capsules, inhalable powder, effervescent tablets, sublingual pills, syrups and oral solutions, injectable solutions, ointments, creams, gels and other pharmaceutical preparations known in pharmaceutical techniques.
  • the invention also provides the administration of the above mentioned formulations by oral, rectal, topical or parenteral route, with the active principle in a quantity not less than
  • compositions 0.001% of the composition's final weight together with at least one pharmaceutically appropriate excipient.
  • pharmaceutical formulations that comprise: a) a compound of general formula (I) as an active principle in a quantity not less than 0.001% of the composition's final weight, and b) at least one pharmaceutically appropriate excipient.
  • the invention also provides pharmaceutical formulations that comprise: a) a compound of general formula (II) as an active principle in a quantity not less than 0.001% of the composition's final weight, and b) at least one pharmaceutically appropriate excipient.
  • the invention provides pharmaceutical formulations that comprise the 4-quinolinones and quinoline derivates of the present invention to be administered to animals and/or humans .
  • FIGURE 1 in annex illustrates the 4-quinolinone derivates tested for antivenin activity.
  • the biological assays were also used to assess two commercial quinolinones, 12 (4-methoxy-2- quinolinecarboxylic acid) and the ciprofloxacine (l-ciclopropyl-6- fluoro-1.4-dihydro-4-oxo-7- (1-piperazinyl) -3-quinolinecarboxylic acid) (13) , a fluoroquinolinone with a much described antibiotic activity.
  • FIGURE 2 in annex is a bar graph for the compounds of Figure 1, prepared for snake venom.
  • FIGURE 2A shows the results for 1. B. jararacussu; 2. B. moojeni.
  • FIGURE 3 in annex shows the haemorrhagic, photolytic and coagulant inhibitory activity of compound 2.
  • FIGURE 3A Effect of compound 2 on the haemorrhage induced by the venom of Bothrops and the isolated metalloprotease.
  • FIGURE 3B Effect of compound 2 on the proteolytic activity induced by the venom of Bothrops and the isolated metalloprotease.
  • SD standard deviation
  • FIGURE 4A in annex shows the fibrinogenolytic inhibitory activity induced by metalloprotease and serine protease enzymes.
  • FIGURE 4B shows by means of SDS-PAGE that there is no evidence of the proteolytic degradation of venom proteins.
  • FIGURE 5 in annex shows by graph the myotoxicity, oedema and phospholipase inhibitory activity of compound 2.
  • FIGURE 5A Effect of compound 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II) .
  • FIGURE 5B Effects of compound 2 on the oedema inducing activity of the venom of B.
  • a first aspect of the invention are the 4-quinolinone compounds and quinoline derivates in accordance to formula (I) and formula (II) .
  • a second aspect of the present invention relates to the preparation process of the 4-quinolinones with pharmacological activity and, more specifically, activity against the venom of the
  • a third aspect of the invention are the medicinal formulations containing an efficient quantity of a 4-quinolinone compound (or a quinoline derivate) of the invention.
  • a fourth aspect of the invention is the use of the formulated compounds as inhibitors of metalloprotease, serine protease, autoimmune and inflammatory diseases including rheumatism as well as for anti-coagulant, antivenin, analgesic and antithrombotic purposes amongst other pharmaceutical applications.
  • the 4-quinolinones of the invention 2-hydroxymethyl-l .4-dihydro-4-quinolinone (compound 1) and 2-hydroxymethyl-6-methoxy-l .4-dihydro-4- quinolinone (compound 2) , are synthetised using a methodology that uses BH 3 -SMe 2 as reducer agent and uses 4-oxo-l .4-dihydro-2- quinoline methyl carboxylate (compound 3) and 6-methoxy-4-oxo-l .4- dihydro-2-quinoline methyl carboxylate (compound 4) as initial material. Furthermore, 1 and 2 respectively provide the quinoline compounds 10 and 11 by reaction with K 2 CO 3 , DMF, EtBr 80% followed by NaH, EtBr 80%.
  • snake venoms comprise complex mixtures of proteins including phospholipases A 2 (PPA 2 ) , myotoxins, haemorrhagic metalloproteases, coagulant serine proteases, cytotoxins, cardiotoxins and others.
  • PPA 2 phospholipases A 2
  • the pathophysiology of snake poisoning involves a complex series of events that depends on the combined action of these components (Gutierrez, J. M. "Comprendiendo los venenos de serpientes: 50 aflos de investigaations en America Latina" [Understanding snake venoms: 50 years of research in Latin America]. Rev. Biol. Trop. , 50:377, 2002).
  • phospholipases A 2 and proteases are abundantly present in snake venom, as well as having a digestive role in the hydrolysis of phospholipids and proteins. These enzymes may present a broad variety of pharmacological activities, such as neurotoxicity, myotoxicity as well as oedematogenic, haemorrhagic and coagulant activities, amongst others (Gutierrez, J. M. & Lomonte, B. "Phospholipase A 2 , myotoxins from Bothrops snake venoms". Toxicon, 33:1405, 1995.; Ownby C. L. J. "Structure, function and biophysical aspects of the myotoxins from snake venoms". Toxicol.
  • a balloon flask containing anilin 3 (5.0 g, 0.054 mol) in dry MeOH (54 inL) has dimethyl acetylenodicarboxylate (DMAD) (7.7 g, 0.054 mol) added under N 2 at 55°C.
  • DMAD dimethyl acetylenodicarboxylate
  • FLC Fine Layer Chromatography
  • the MeOH is evaporated, after which CH 2 Cl 2 (30 inL) is added for extraction and the organic phase is washed in a saturated solution of NH 4 Cl (3 x 10 mL) followed by water (3 x 10 mL) .
  • the organic phase is dried and evaporated.
  • Compound 5 is obtained with a yield of 50% (6.3 g) .
  • RMN 1 H (200 MHz, CDCl 3 ) ⁇ : 9.67 (si, IH); 7.32 - 7.25 (m, 2H); 7.13 - 7.05 (m, IH); 6.92 - 6.88 (m, 2H); 5.39 (s, IH); 3.74 (s; 3H); 3.70 (s, 3H).
  • RMN 13 C (50 MHz, CDCl 3 ) ⁇ : 169.75; 164.72; 147.91; 140.18; 129.03; 124.13; 120.60; 116.56; 93.46; 52.62; 51.07.
  • RMN 1 H (200 MHz, CDCl 3 ) ⁇ : 9.57 (si, IH); 6.91 - 679 (m, 4H); 5.30 (s, IH); 3.78 (s, 3H); 3.73 (s, 3H); 3.67 (s, 3H).
  • RMN 13 C (50 MHz, CDCl 3 ) ⁇ : 182.44; 170.0; 164.76; 156.87; 148.99; 133.39; 122.96; 114.34; 91.66; 55.40; 52.61; 21.01. IV (v raax , KBr) cm "1 : 3284; 3210; 2952; 2836; 1742; 1637; 1033.
  • Intramolecular cyclisation is achieved through reaction at high temperature.
  • the nucleophilic attack on the ester carbonyl is directed by the nitrogen which is an ortholpara director and thus closes the ring.
  • a balloon flask containing a reflux condenser has ether diphenyl (8 mL) and reflux added, after which enamine 5 (1 g, 4.25 mmol) is added and after a specific time this system is removed from the sand bath and immersed in ice with the precipitation of the substrates being observed.
  • a pre-purification is performed using dry-flash separation with a gradient elution of n-hexane to methanol.
  • Compound 7 is obtained with a yield of 70% (600 mg) following recrystallisation.
  • P.F. 215 - 225 0 C
  • H 8 shows a shift at 7.35 ppm while the H 7 signal is observed at 7.66 ppm.
  • RMN 13 C for 7 shows a carbonyl signal (in carbon C4 ) ⁇ , ⁇ -insaturated at 176.39 ppm while C3 shows a shift at 108.76 ppm.
  • the spectrum of RMN 13 C for 7 shows a carbonyl (C4) ⁇ , ⁇ -insaturated at 176.29 ppm while C3 shows a shift at 103.76 ppm.
  • the borane-dimethyl sulphide (BH 3 -SMe 2 ) complex is used in the reduction of esters with a strong preference for the group located in the ⁇ position of the hydroxyl groups (Saito, S., Ishikawa, T., Kuroda, A., Koga, K. & Moriwake, T. "A revised mechanism for chemoselective reduction of esters with borane-dimethyl sulfide complex and catalytic sodium tetrahydroborate directed by adjacent hydroxyl group". Tetrahedron, 48: 4067, 1992) .
  • the research required for the present invention was initially directed at testing reduction using BH 3 -SMe 2 due to the simplicity of the work-up for this reagent when compared to DIBAL-H since borane may be removed from the reagent medium through distillation with anhydrous MeOH without the addition of water and it is also possible to remove any other impurities through recrystallisation.
  • a balloon flask containing compound 8 (500 mg, 2.16 mmol) in anhydrous THF (10 mL) under N 2 atmosphere at O 0 C has pure BH 3 -SMe 2 complex (204 ⁇ L, 2.16 mmol) in a solution of THF (2 mL) added drop-by-drop.
  • the reactor flask is left at room temperature.
  • the reaction is monitored by FLC using AcOEt as eluent.
  • Anhydrous MeOH (10 mL) is then added after 24 hours of reaction and the solution is distilled.
  • Anhydrous MeOH (3 x 15 mL) is then added again, since the distillation process removes the remaining residues and impurities of BH 3 SMe 2 .
  • the compounds are characterised by RMN 1 H, whereby the forming of compound 1 is confirmed by the disappearance of the methoxyl group signal (3.99 ppm) and the appearance of the carbonylic methylene signal at 4.48 ppm, while the carbonylic methylene signal appears on the spectrum of RMN 13 C at 60.47 ppm.
  • the signal appearing at 4.72 ppm relates to carbinolic methylene and the disappearance pf methoxyl at 3.96 ppm.
  • the preparation of the quinolinic derivates occurs by a fast and clean reaction using DMF as solvent and K 2 CO 3 as base and, depending on the intended product, using the alkylating agents EtBr or MeI (Edmont, D.; Rocher, R.; Plisson, C. & Chenault, J. "Synthesis and evaluation of quinoline carboxyguanidines as antidiabetic agents" Bioorg. Med. Chem. Lett., 10: 1831, 2000).
  • the balance is shifted to form the O-alkylated product, with the selectivity depending on factors such as the alkyl halid structure, ring substitutes and the solvent (Comins, D. L. & Jianhua, G.
  • RMN 13 C (100 MHz, CDCl 3 ) ⁇ : 166.46; 161.29; 158.91; 146.60; 144.42;
  • the compound 4-ethoxy-2-ethoxymethyl-6-methoxyquinoline (11) is prepared using NaH in DMF and DME to ascertain the influence of the hydroxyl group on the biological activity (Osornio, Y. M.; Miranda, L. D.; Cruz-Almanza, R. & Muchowski, J. M. "Radical cyclizations to quinolone and isoquinolone systems under oxidative and reductive reductions" Tetrahedron. Lett., 45:2855, 2004.).
  • Compound 11 is characterised by RMN 1 H and its formation is confirmed by the appearance of two carbonillic methylene signs at 4.33 and 3.67 ppm apart from the methyls at 1.59 and 1.31 ppm, while the spectrum of RMN 13 C shows the appearance of carbonillic methylenes at 74.39; 66.35; 64.09 ppm.
  • the compounds selected for the initial screening are shown in Figure 2 in annex. This screening was for the venoms of the Bothrops jararacussu, B. moojeni, B. alternatus and B. jararacussu BjussuMP-I snakes to determine promising compounds.
  • Figure 3 A presents the effects of 2 on haemorrhages induced by the different venoms of the Bothrops genus snakes and an isolated metalloprotease .
  • haemorrhagic activity suggests interaction of the inhibitor with a metal and/or metalloprotease, thus neutralising effects.
  • compound 2 significantly inhibits proteolytic activity on casein and coagulants in human plasma induced by snake venoms and isolated enzymes, metalloprotease ( Figure 3 B) or serine protease ( Figure 3 C) , respectively.
  • proteolytic activity induced by Class I (neuwiedase isolated from B. neuwiedi) and III (BjussuMP-I isolated from B. jararacussu) metalloproteases was inhibited by compound 2 by approximately 67 and 70%, respectively, at a ratio of 1:10 protease : inhibitor (m/m) .
  • SDS-PAGE shows the proteolytic activity on bovine fibrinogen caused by the venom of the B. jararacussu snake and isolated proteases.
  • (B) Interaction between the venom of the B. jararacussu snake and 2. Samples containing venom/toxin (20 ⁇ g) and the 88 (600 ⁇ g) were incubated for 30 minutes at 37°C at a ratio of 1:30 (w/w) . Lanes: 1 - BthTX-I + 2; 2 - BthTX-II + 2; 3 - venom of B. jararacussu + 2; 4 -only BthTX-I; 5 -only BthTX-II; 6 -only the venom of B. jararacussu.
  • Figure 5 shows the inhibitory activity for myotoxicity, oedema and phospholipase by compound 2.
  • Figure 5A shows the effect of 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II).
  • Figure 5B illustrates the effects of 2 on the oedems inducing activity caused by the venom of B. jararacussu and isolated PLA2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and acid Asp49 BthA-I-PLA2) .
  • Compound 2 inhibited the myotoxic activity of both enzymes of Asp49 BthTX-II and Lys49 BthTX-I phospholipases A 2 of B. jararacussu.
  • Compound 2 proved more efficient in neutralising PLA 2 activity induced by basic Asp49 PLA 2 S (BthTX-II and CB) in A Figure 5C than that induced by the pure venoms and the acid isoform Asp49 BthA-I-PLA 2 .
  • These data suggest a more specific link with basic PLA 2 S, intermediated by interactions of probable electrostatic cause and supports various authors who have pointed out the distinct or partial power of the overlap of catalytic sites and another pharmacologic one. (Soares, A. M. & Giglio, J. R. Chemical modifications of phospholipases A 2 from snake venoms: Effects on catalytic and pharmacological properties. Review. Toxicon, 42: 855, 2003.).
  • compound 2 inhibits haemorrhages, enhances coagulation, proteolytic activity, oedema and myotoxicity induced by the venom of the Bothrops and Crotalus snakes and isolated metalloprotease, serine protease and phospholipases A 2 enzymes demonstrating that the inhibitor is a good tool having potential antivenin activity.
  • the pharmacological efficiency of compound 2 is superior in inhibiting the proteases induced by PLA 2 S and thus provided information for development of therapeutic agents for the treatment of haemostatic diseases. Furthermore, the inhibitor has potential use as a complementary antivenin and is an alternative for treating poisoning caused by snake bite.
  • the compounds may be used as anti-inflammatories, antirheumatics, analgesics, immunosuppressors, antivenins, antithrombotics, anti-allergies and expectorants as well as for the treatment of white blood cell disorders and haemostatic system disorders amongst other therapeutic applications; in illnesses related to white blood cell disorders, such as autoimmune and inflammatory diseases including rheumatism amongst others, as well as anti-coagulants, antivenin, analgesics, antithrombotics and other therapeutical applications.
  • Figure 5 shows the inhibitory activity for myotoxicity, oedema and phospholipase by compound 2.
  • Figure 5A shows the effect of 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II) .
  • Figure 5B illustrates the effects of 2 on the oedems inducing activity caused by the venom of B. jararacussu and isolated PLA2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and acid Asp49 BthA-I-PLA2) .
  • the muscle damage inflicted by the venom of Bothrops is partially caused by a group of proteins having PLA 2 structures.
  • Compound 2 inhibits the myotoxic activity of both enzymes Asp49 BthTX-II and Lys49 BthTX-I phospholipases A 2 of B. jararacussu. Compound 2 proved more efficient in neutralising PLA 2 activity induced by basic Asp49 PLA 2 S (BthTX-II and CB) in A Figure 5C than that induced by the pure venoms and the acid isoform Asp49 BthA-I-PLA 2 .
  • Figure 5 shows the inhibitory activity for myotoxicity, oedema and phospholipase by compound 2.
  • Figure 5A shows the effect of 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II).
  • Figure 5B illustrates the effects of 2 on the oedems inducing activity caused by the venom of B. jararacussu and isolated PLA2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and acid Asp49 BthA-I-PLA 2 ) .
  • compound 2 inhibits haemorrhages, enhances coagulation, proteolytic activity, oedema and myotoxicity induced by the venom of the Bothrops and Crotalus snakes and isolated metalloprotease, serine protease and phospholipases A 2 enzymes demonstrating that the inhibitor is a good tool having potential antivenin activity.
  • Snake venom or isolated metalloprotease (40 ⁇ g) is incubated with casein 1% (w/v) (1.0 mL) in a buffer solution of 0.1 M Tris- HCl (pH 8.0) for 30 minutes at 37 0 C.
  • the reaction is ended through the addition of a trichloroacetic acid solution at 5 % (v/v) (1.0 mL) and the mixture is left standing for 30 minutes at ambient temperature and then centrifuged (2000 rpm) for 5 minutes at 25 0 C.
  • the proteolytic activity is estimated by the measurement of the absorbance of the supernatant at 280 nm.
  • venom or venom/inhibitor 50 ⁇ L were incubated with venom or venom/inhibitor (50 ⁇ L) in varying proportions (m/m) during a period of 30 minutes at 37 0 C and the coagulation time was verified.
  • the control tubes included plasma incubated with phosphate buffered saline solution (PBS) + calcium or dimethyl sulphoxide or only the compound.
  • PBS phosphate buffered saline solution
  • Oedema Inducing Activity The oedemas are induced by the direct injection of venom (20 ⁇ g) and purified proteins (20 ⁇ g) into the right leg of male Swiss mice (18-22 g) . Inhibition activity is verified incubating the venom or isolated protein with the inhibitor in varying concentrations (m/m) .
  • Myotoxic Activity Myotoxic Activity
  • mice Male Swiss mice (18-22 g) are injected with solutions containing 25 ⁇ g/50 ⁇ L doses of venom or toxin intra-muscularly at the right leg. The mixtures of venom or toxin/inhibitor (m/m) are then verified. The controls receive phosphate buffered saline solution or just inhibitor. The mice are bled at the tail 3 hours after injection and the blood is collected in capillary tubes containing heparin. The creatin kinase (CK) activity of the plasma is determined using a Bioclin Kit (Bioclin, Brasil) . This activity is expressed in units/L, a corresponding unit for the production of one micromol of nicotinamide adenine dinucleotide (NADH) /min at 30 0 C.
  • CK creatin kinase
  • Phospholipase A 2 Activity Indirect haemolytic activity is tested using agarose- erythrocyte-egg yolk gel as a substrate. The compounds are tested following incubation with the pure venoms or PLA 2 in varying ratios (m/m) .

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Abstract

The present invention describes novel 4-quinolinones corresponding to formula (I) and quinoline derivatives thereof as formula (II), process of preparation thereof, pharmaceutical formulations comprising said 4-quinolinones and pharmaceutical application thereof for diseases related to disorders of white blood cells, such as inflammatory and autoimmune diseases, including rheumatism, as well as the use as anti-coagulant, antivenin, analgesic and for antithrombotic purposes.

Description

PROCESS FOR THE PREPARATION AND PHARMACEUTICAL FORMULATIONS FOR 4- QUINOLINONES AND QUINOLINES AND USE THEREOF
FIELD OF THE INVENTION The present invention refers to the field of 4-quinolinones and derived quinolines, to be used in pharmaceutical formulations as synthetic protease inhibitors, such as haemorrhagic metalloprotease resulting from bites of the snakes of the Bothrops genus and other applications.
BACKGROUND OF THE INVENTION
Snake venoms comprise complex protein mixtures including phospholipases A2, myotoxins, haemorrhagic metalloprotease, coagulant serine protease, cytotoxins, cardiotoxins and others. The pathophysiology of poisoning by snakes involves a complex series of events that depend on the combined action of these components. (Gutierrez, J. M. "Comprendiendo los venenos de serpientes: 50 aήos de investigaciones en America Latina" [Understanding snake venoms: 50 years of research in Latin America]. Rev. Biol. Trop. , 50:377, 2002). Both phospholipases A2 and proteases are abundantly present in snake venom, as well as having a digestive role in the hydrolysis of phospholipids and proteins. These enzymes may present a broad variety of pharmacological activities, such as neurotoxicity, myotoxicity as well as oedematogenic, haemorrhagic and coagulant activities, amongst others (Gutierrez, J. M. & Lomonte, B. "Phospholipase A2, myotoxins from Bothrops snake venoms". Toxicon, 33:1405, 1995.; Ownby C. L. J. "Structure, function and biophysical aspects of the myotoxins from snake venoms". Toxicol. -Toxins Review, 17:213,1998.; Ownby, C. L.; Araujo, H. S. S.; White, S. P. & Fletcher, J. E. "Lysine 49 phospholipase A2 proteins". Toxicon, 37: 411, 1999.; Soares, A. M.; Fontes, M. R. M. & Giglio, J. R. Phospholipase A2 myotoxins from Bothrops snake venoms: Structure- Function relationship. Review. Curr. Org. Chem. , 8: 1677, 2004.). Pharmacological studies have demonstrated that the extracts and fractions of certain plants used in traditional medicine possess anti-inflammatory, antiviral and antivenin properties
(Martz, W. "Plants with a reputation against snakebite". Toxicon,
30:1131,1992.; Mors, W. B.; Nascimento, M. C; Pereira, B. M. R. &
Pereira, N. A. "Plant natural products active against snake bite - the molecular approach". Phytochemistry, 55: 627, 2000.; Soares,
A. M.; Ticli, F. K.; Marcussi, S.; Lourenςo, M. V.; Januario, A.
H.; Sampaio, S. V.; Giglio, J. R.; Lomonte, B. & Pereira, P. S.
"Medicinal plants with inhibitory properties against snake venoms". Curr. Med. Chem. , 12:2625, 2005.; Soares, A. M.; Januario, A. H.; Lourenςo, M.V.; Pereira, A.M. S.; Pereira, P. S. Drugs Future 29:1105, 2004.)
Patent application US2004/0242639 presents the activity of a phospholipase C inhibitor as therapy for inflammatory diseases. On the other hand, quinolinones with N-heteroamino in position 5 of the quinolinone ring described in publication WO94/10163 (and the corresponding patents US5646163 and Brazilian patent applications BR 9307347 and BR 9507553} present antimicrobial activity, while the quinolinones substituted in position 3 described in this invention present inhibitor activity for phospholipase C. Patent document EP0304158 claims quinolones possessing antibacterial activity with variations of the substitutes in positions 2 and 3, while patent application JP2000273086 describes quinolinones only substituted in position 2.
Despite the structures described in publication CN1817880A being of the type 4-quinolinones, the substitute in position 2 differs from those included in the claims herein.
Patent document WO01/53266 describes type 4-quinolinone structures substituted in position 3 that are useful for treating diseases associated to white blood cell disorders such as autoimmune and inflammatory diseases but, however, are distinct from the structures proposed in the present invention.
The US patent application published as US2003/0124120 describes quinolinones with antagonistic activity in vitronectin receptors and presents variants that may be either in positions 2 or 3. Certain 2-quinolinone compounds having serine protease activity were described in patent US6,855,726. Yet other quinolinone structures were claimed in patent document WO01/70698.
The international publication WO2004/007461 describes a method for the treatment or prophylaxis of a neurological condition - more specifically neurodegenerative disorders - that consists administering an effective quantity of a composition of the formula (I) to a patient requiring treatment. The standard skeleton of the molecule that is the object of that publication is similar to the compounds of the present invention but, however, despite the many variations of the substitutes described, no skeleton suggests or describes compounds similar to the compounds described herein.
In the same manner, patent US5,444,071 and patent application US2006/0217322 describe compounds having pharmaceutical activity with basic skeletons similar to those of the compounds proposed herein but none of these structures anticipates those of the present invention.
Patent US5,102,892 describes compounds with a quinoline structure similar to those described in the present invention but, however, varying the position 4- from Oxygen to Nitrogen.
International publication WO2006/068617 presents a methodology for the preparation of enamine using dimethyl acetylenedicarboxylate (DMAD) but, however, the input materials and products obtained are different from those that constitute the object of the present invention. No intermediate similar to the compounds of that invention is suggested or described.
The publications BR1100774, WO02/200625 and WO97/21680 describe other classes of quinolines different from those comprising the object of the present invention.
In the compounds described in patents US5,789,419,
US4,412,075 and US4,593,101, the skeletons present a difference compared to the double conjugate that is not found in the compounds of the present invention and neither use the conjugate system proposed herein. Furthermore, patent document US5,789,419 describes compounds intended to treat bronchial e circulatory system disorders.
The structures described in patent EP1458718 are of the type 2-quinolinones and the activity is present in various receptors. Patents US4,859,669, US6,271,416, CN1594295, US6,855,726, patent application US2005/0054672, publications EP1574501, EP1097139B1, EP1270006 and patent application US 2005/0209247 describe 2-quinolinones structurally distinct from those object of the present invention. Patent documents EP1245566 and US6,645,983 describe 4- quinolinones but, however, the structure described does not include a substitute in position 2 and the biological activities are respectively described as being anti-microbial and intended for the treatment of cancers. Publication EP0251308 describes a fluoroquinolinone as substitute in positions 2 and 3 of the quinolinone system. R2 is H or S linked to the N of the ring by an ethylene bridge.
Thus, the literature shows that despite considerable technological development, there is still great need for new A- quinolinones obtained through processes using derivates of borane as ester reducing agents in the presence of enone, with these compounds being useful as protease, lipase and phospholipase inhibitors as well as having other medicinal applications such as for disorders affecting the haemostatic system or white blood cells. The process for the preparation, the compounds and the pharmaceutical formulations of the 4-quinolinones and their quinoline derivates are described and claimed herein.
SUMMARY OF THE INVENTION Overall, the present invention refers to derivates of 4- quinolinone in accordance with the formula below:
Figure imgf000007_0001
Formula (I) Whereby: R = H or OCH3
R1 and R2 are selected independently of each other, with H, OH, an alkyl group of Ci - C4, an alkoxy group of Ci - C5, a -OCO-R7 group, and a group derived from a saccharide, optionally R1 and R2 together forming a methylenedioxy group, a phenyl group or a phenyl group substituted in 1 and 3 with groups selected from H, an alkoxy group in Ci - C4, a -OCOR7 group, a -0-SO2-R7 group, halogen, an alkyl or CF3 group, and -NR7R8 group, in which R7 and R8 are selected independently of each other, from hydrogen, alkyl group in Cx - C5, alkenyl group, alkyl phenyl group (Ci - C4), dimethylamine, rings with 4 - 6 member heterocycles, optionally with one or more heteroatoms selected from oxygen, nitrogen and sulphur or a methylpiperazinyl group;
R3 is selected from H, alkyl group in Cx - C4, alkenyl group, a - CO-R8 group and a -A-R9 group, -CO2R9' group in which R9' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, - NH2, -CHCH2CH2,- Rs is an alkyl group in Cx-C4; A is an alkylene group in C1 - C4; R9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur and nitrogen, CN, hydroxyl, -COORi0 and CONRHRI2 groups, a -NRi3R14 group, a -COR15 group and a OSO2R16 group;
Rio/ Rii/ Ri2/ Ri4 an<d R15 are independently selected from hydrogen, alkyl groups in Ci - C4, halogen and alkyl phenyl group (Ci - C4) , Ri6 is selected from the phenyl group and the alkyl phenyl group (Ci - C4) ; R4 = OH, halogens, alkoxy group in Ci - C6, alkoxy benzyl group, - CO-Ri7 in which Ri7 is alkyl Cx - C6 or p-methoxy benzyl, -0-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups Ci - C4, a - OCOR7 group, a -0-SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons.
The compounds of Formula (I) produce the quinolines of Formula (II) in the presence of a K2CO3 base and alkylating agents:
Figure imgf000008_0001
Formula (II) Whereby: R = H or OCH3
R1 and R2 are selected independently of each other, with H, OH, a group R4 = OH, halogens, an alkoxy group in C1 - C6/ alkoxy benzyl group, -CO-R17 in which R17 is alkyl Ci - C6 or p-methoxy benzyl, - 0-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from a saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alcoxy C1 - C4 groups, a -OCOR7 group, a -0-SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from a saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons in C1 - C4, an alcoxy group in C1 - C5, a -OCO-R7 group, and a group derived from a saccharide, optionally Ri and R2 together forming a methylenodioxy group, a phenyl group or phenyl group substituted in 1 to 3 with groups selected from H, an alkoxy Ci - C4 group, a -OCOR7 group, a - 0-SO2-R7 group, halogen, alkyl group or CF3 group and -NR7R8 group, in which R7 and Re are selected independently of each other, from hydrogen, alkyl group in C1 - C5, alkenyl group, alkyl phenyl group (Ci - C4) , dimethylamine, 4 - 6 heterocycle member rings optionally with one or more heteroatoins selected from among oxygen, nitrogen and sulphur or a methylpiperazinyl group;
R3 is selected from H, alkyl group in Ci - C4, alkenyl group, a -
CO-R8 group and a -A-R9 group, -CO2R9' group in which R9' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, -NH2, -CHCH2CH2; Rs is an alkyl group in Ci-C4; A is an alkylene group in Cx - C4; R9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur, nitrogen, CN, hydroxyl, -COORi0 and CONRnR12 groups, a - NRi3R14 group, a -CORi5 group and a OSO2Ri6 group;
Rio, Rn, Ri2/ Ri4 and Ri5 are independently selected from hydrogen, alkyl groups in Cx - C4, halogen and alkyl phenyl group (Cx - C4), Ri6 is selected from the phenyl group and the alkyl phenyl group (Ci - C4); R4 = OH, halogens, alkoxy group in Ci - C6, alkoxy benzyl group, - CO-Ri7 in which Ri7 is alkyl Ci - C6 or p-methoxy benzyl, -0-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups Ci - C4, a - OCOR7 group, a -0-SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons.
The invention also refers to a process for preparing the compounds of formula (I) and formula (II), with the above mentioned processes comprising the stages of: a) make anilin (compound 3) or 4-methoxyanilin (compound 4) react with dimethyl acetylenedicarboxylate (DMAD) in methanol at 55°C, obtaining 2- (phenylamine) -dimethyl maleate or 2- anilin-2-dimethyl butenodioate (compound 5) or 2- (4- methoxyphenylamine) -dimethyl maleate or 2- (4-methoxyanilin) - 2- dimethyl butenodioate (compound 6) .
Figure imgf000010_0001
6,R = OCH3 b) make compounds 5 or 6 react by reflux with diphenylether (DFE) to produce 4-oxo-l .4-dihydro-2-quinoline methyl carboxylate (compound 7) or 6-methoxy-4-oxo-l .4-dihydro-2- quinoline methyl carboxylate (compound 8) ;
Figure imgf000010_0002
5, R = H 7, R = H 6, R = OCH3 8,R = OCH3 make compounds 7 and 8 react with the borane-dimethyl sulphide (BH3-SMe2) complex, obtaining compounds 1, 2- hydroxymethyl-4-quinolinone and 2, 2- hydroxymethyl-6- methoxy-4-quinolinone .
Figure imgf000010_0003
7, R = H 1,R = H 8,R = OCH3 2, R = 0CH3 d) make compound 2 react with: 1) K2CO3 (potassium carbonate) , DMF (dimethyl formamide) , EtBr (Ethidium bromide) at 80% obtaining 4-ethoxy-2-hydroxymethyl-6-methoxyquinoline
(compound 10) 2) NaH (sodium hydrate), EtBr 80%, or 4-ethoxy-
2-ethoxymethyl-6-methoxyquinoline (compound 11) .
Figure imgf000011_0001
The invention provides compounds 1, 2, 10, 11 and the general formula (I) and (II) as being protease, lipase, phospholipase and enzyme inhibitors.
The invention provides compounds 1, 2, 10, 11 and the general formula (I) and (II) to be used in the broad aspect of inflammatory, antirheumatic, analgesic, autoimmune, antivenin, antithrombotic, anti-allergic and expectorant activities, as well as white blood cell disorders and haemostatic system disorders amongst other possible pharmaceutical applications.
The invention provides compositions, formulations or medicines containing effective amounts of compounds 1, 2, 10, 11 and the general formula (I) and (II) or their pharmaceutically acceptable salts.
The invention also provides compositions including the compounds 1, 2, 10, 11 and the general formula (I) and (II) to be used in the broad aspect of inflammatory, antirheumatic, analgesic, autoimmune, antivenin, antithrombotic, anti-allergic and expectorant activities, as well as white blood cell disorders and haemostatic system disorders amongst other possible pharmaceutical applications.
The invention also provides pharmaceutical formulations prepared in the form of pills, coated pills, capsules, inhalable powder, effervescent tablets, sublingual pills, syrups and oral solutions, injectable solutions, ointments, creams, gels and other pharmaceutical preparations known in pharmaceutical techniques.
The invention also provides the administration of the above mentioned formulations by oral, rectal, topical or parenteral route, with the active principle in a quantity not less than
0.001% of the composition's final weight together with at least one pharmaceutically appropriate excipient. The invention also provides pharmaceutical formulations that comprise: a) a compound of general formula (I) as an active principle in a quantity not less than 0.001% of the composition's final weight, and b) at least one pharmaceutically appropriate excipient.
The invention also provides pharmaceutical formulations that comprise: a) a compound of general formula (II) as an active principle in a quantity not less than 0.001% of the composition's final weight, and b) at least one pharmaceutically appropriate excipient.
Furthermore, the invention provides pharmaceutical formulations that comprise the 4-quinolinones and quinoline derivates of the present invention to be administered to animals and/or humans .
BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 in annex illustrates the 4-quinolinone derivates tested for antivenin activity. The biological assays were also used to assess two commercial quinolinones, 12 (4-methoxy-2- quinolinecarboxylic acid) and the ciprofloxacine (l-ciclopropyl-6- fluoro-1.4-dihydro-4-oxo-7- (1-piperazinyl) -3-quinolinecarboxylic acid) (13) , a fluoroquinolinone with a much described antibiotic activity.
FIGURE 2 in annex is a bar graph for the compounds of Figure 1, prepared for snake venom. FIGURE 2A shows the results for 1. B. jararacussu; 2. B. moojeni. FIGURE 2B shows the results for 3. B. alternatus; 4. B. jaracussu BjussuMP-1, whereby m/m = mass/mass.
FIGURE 3 in annex shows the haemorrhagic, photolytic and coagulant inhibitory activity of compound 2. FIGURE 3A: Effect of compound 2 on the haemorrhage induced by the venom of Bothrops and the isolated metalloprotease. FIGURE 3B: Effect of compound 2 on the proteolytic activity induced by the venom of Bothrops and the isolated metalloprotease. FIGURE 3C: Effect of the coagulant activity of compound 2 induced by the venoms of Bothrops and Crotalus and the isolated serine protease. The results are expressed by the mean ± standard deviation (SD) (n = 6) . FIGURE 4A in annex shows the fibrinogenolytic inhibitory activity induced by metalloprotease and serine protease enzymes. FIGURE 4B shows by means of SDS-PAGE that there is no evidence of the proteolytic degradation of venom proteins. FIGURE 5 in annex shows by graph the myotoxicity, oedema and phospholipase inhibitory activity of compound 2. FIGURE 5A: Effect of compound 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II) . FIGURE 5B: Effects of compound 2 on the oedema inducing activity of the venom of B. jararacussu and isolated PLA-2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and Asp49 BtIiA-I-PLA2 acid) . FIGURE 5C: Effect of the phospholipase activity induced by the venom of B. jararacussu and C. d. terrificus and isolated PLA2S (BthTX-II and CB) . The results are expressed by the mean ± standard deviation (SD) (n = 6) .
DETAILED DESCRIPTION OF THE INVENTION
A first aspect of the invention are the 4-quinolinone compounds and quinoline derivates in accordance to formula (I) and formula (II) .
A second aspect of the present invention relates to the preparation process of the 4-quinolinones with pharmacological activity and, more specifically, activity against the venom of the
Bothrops genus snakes. A third aspect of the invention are the medicinal formulations containing an efficient quantity of a 4-quinolinone compound (or a quinoline derivate) of the invention.
A fourth aspect of the invention is the use of the formulated compounds as inhibitors of metalloprotease, serine protease, autoimmune and inflammatory diseases including rheumatism as well as for anti-coagulant, antivenin, analgesic and antithrombotic purposes amongst other pharmaceutical applications.
According to the process of the invention, the 4-quinolinones of the invention, 2-hydroxymethyl-l .4-dihydro-4-quinolinone (compound 1) and 2-hydroxymethyl-6-methoxy-l .4-dihydro-4- quinolinone (compound 2) , are synthetised using a methodology that uses BH3-SMe2 as reducer agent and uses 4-oxo-l .4-dihydro-2- quinoline methyl carboxylate (compound 3) and 6-methoxy-4-oxo-l .4- dihydro-2-quinoline methyl carboxylate (compound 4) as initial material. Furthermore, 1 and 2 respectively provide the quinoline compounds 10 and 11 by reaction with K2CO3, DMF, EtBr 80% followed by NaH, EtBr 80%.
The reduction reaction using borane-dimethyl sulphide occurs selectively in the ester group rather than in the enone group of the 4-quinolinone system. Apart from these novel compounds, it is further possible to prepare intermediates and derivates.
The biological evaluation of these compounds was for antivenin activity. Snake venoms comprise complex mixtures of proteins including phospholipases A2 (PPA2) , myotoxins, haemorrhagic metalloproteases, coagulant serine proteases, cytotoxins, cardiotoxins and others. The pathophysiology of snake poisoning involves a complex series of events that depends on the combined action of these components (Gutierrez, J. M. "Comprendiendo los venenos de serpientes: 50 aflos de investigaciones en America Latina" [Understanding snake venoms: 50 years of research in Latin America]. Rev. Biol. Trop. , 50:377, 2002). Both phospholipases A2 and proteases are abundantly present in snake venom, as well as having a digestive role in the hydrolysis of phospholipids and proteins. These enzymes may present a broad variety of pharmacological activities, such as neurotoxicity, myotoxicity as well as oedematogenic, haemorrhagic and coagulant activities, amongst others (Gutierrez, J. M. & Lomonte, B. "Phospholipase A2, myotoxins from Bothrops snake venoms". Toxicon, 33:1405, 1995.; Ownby C. L. J. "Structure, function and biophysical aspects of the myotoxins from snake venoms". Toxicol. -Toxins Review, 17:213,1998.; Ownby, C. L.; Araujo, H. S. S.; White, S. P. & Fletcher, J. E. "Lysine 49 phospholipase A2 proteins". Toxicon, 37: 411, 1999.; Soares, A. M.; Januario, A. H.; Lourenco, M. V.; Pereira, A.M. S.; Pereira, P. S. Drugs Future 29:1105, 2004). The preparation processes of the compounds of the present invention are summarily described in Diagram 1 below: DIAGRAM 1
Figure imgf000015_0001
7, R = H 1 , R = H 8, R = OCH3 2, R = OCH3
K2CO3, DMF, I ) K2CO3, DMFh) NaH, EtBr, EtBr, 80% EtBr, 80% I 80%
Figure imgf000015_0002
The details of each stage are explained below.
Preparation of 2- (phenylamine) -dimethyl maleate or 2-anilin-2- dimethyl butenodioate (5) and 2- (4-methoxyphenylamine) -dimethyl maleate or 2- (4-methoxyanilin) -2-dimethyl butenodioate (6).
Figure imgf000015_0003
6,R = OCH3 The enamines 5 and 6 are obtained based on the methodology described by Edmont, D.; Rocher, R.; Plisson, C. & Chenault, J.
"Synthesis and evaluation of quinoline carboxyguanidines as antidiabetic agents" Bioorg. Med. Chem. Lett., 10: 1831, 2000, with a 50% yield.
The preparation process of the compounds 5 and 6 consists of the following experimental procedure:
A balloon flask containing anilin 3 (5.0 g, 0.054 mol) in dry MeOH (54 inL) , has dimethyl acetylenodicarboxylate (DMAD) (7.7 g, 0.054 mol) added under N2 at 55°C. The reaction is monitored by Fine Layer Chromatography (FLC) using n-hexane as an eluent. At the end of the reaction the MeOH is evaporated, after which CH2Cl2 (30 inL) is added for extraction and the organic phase is washed in a saturated solution of NH4Cl (3 x 10 mL) followed by water (3 x 10 mL) . The organic phase is dried and evaporated. Compound 5 is obtained with a yield of 50% (6.3 g) .
RMN 1H (200 MHz, CDCl3) δ: 9.67 (si, IH); 7.32 - 7.25 (m, 2H); 7.13 - 7.05 (m, IH); 6.92 - 6.88 (m, 2H); 5.39 (s, IH); 3.74 (s; 3H); 3.70 (s, 3H). RMN 13C (50 MHz, CDCl3) δ: 169.75; 164.72; 147.91; 140.18; 129.03; 124.13; 120.60; 116.56; 93.46; 52.62; 51.07.
EM (relative intensity %) m/z: 235.25 (6.9); 144.15 (93); 77.10 (100) . IV (vmax , KBr) cm"1: 3457; 3380; 2953; 1739; 1668; 1282; 1031. A balloon flask containing anisiline 4 (5.0 g, 0.041 mol) in dry MeOH (41 mL) , has (DMAD) (5.8 g, 0.041 mol) added under N2 at 55°C. The reaction is monitored by (FLC) using n-hexane as an eluent. At the end of the reaction the MeOH is evaporated, after which CH2Cl2 (30 mL) is added for extraction and the organic phase is washed in a saturated solution of NH4Cl (3 x 10 mL) followed by water (3 x 10 mL) . The organic phase is dried and evaporated. Compound 6 is obtained with a yield of 50% (5.5 g) .
RMN 1H (200 MHz, CDCl3) δ: 9.57 (si, IH); 6.91 - 679 (m, 4H); 5.30 (s, IH); 3.78 (s, 3H); 3.73 (s, 3H); 3.67 (s, 3H). RMN 13C (50 MHz, CDCl3) δ: 182.44; 170.0; 164.76; 156.87; 148.99; 133.39; 122.96; 114.34; 91.66; 55.40; 52.61; 21.01. IV (vraax, KBr) cm"1: 3284; 3210; 2952; 2836; 1742; 1637; 1033.
EM (relative intensity %) m/z: 265.50 (13); 146.15 (75); 77.15
(95) .
Preparation of the 4-oxo-1.4-dihydro-2-quinoline methyl carboxylate (7) and 6-methoxy-4-oxo-1.4-dihydro-2-quinoline methyl carboxylate (8) .
Figure imgf000017_0001
5, R = H 7, R = H 6,R = OCH3 8,R = OCH3
Intramolecular cyclisation is achieved through reaction at high temperature. The nucleophilic attack on the ester carbonyl is directed by the nitrogen which is an ortholpara director and thus closes the ring.
In laboratory, a balloon flask containing a reflux condenser has ether diphenyl (8 mL) and reflux added, after which enamine 5 (1 g, 4.25 mmol) is added and after a specific time this system is removed from the sand bath and immersed in ice with the precipitation of the substrates being observed. A pre-purification is performed using dry-flash separation with a gradient elution of n-hexane to methanol. Compound 7 is obtained with a yield of 70% (600 mg) following recrystallisation. P.F.= 215 - 225 0C
RMN 1H (400 MHz, CDCl3) δ: 12.03 (s, IH); 8.13 (d, J = 8.0 Hz, IH); 7.95 (d, J = 10 Hz, IH); 7.66 - 7.63 (m, IH); 7.35 - 7.32 (m, IH); 6.73 (s; IH) ; 3.99 (s; 3H) .
RMN 13C (100 MHz, CDCl3) δ: 176.39; 161.09; 138.44; 135.75; 130.55; 124.37; 123.04; 122.09; 117.89; 108.77; 51.53. IV (vmax, KBr) cm"1: 3436; 2925; 2886; 1733; 1639; 1538; 1033. EM (relative intensity %) m/z: 203 (30); 143 (100); 115.15 (73); 89.15 (66) . In a balloon flask containing a reflux condenser ether diphenyl (8 inL) was added, refluxed, after which enamine 6 (1.0 g,
3.8 mmol) was added and after a determined time the reflux was ended and the balloon was immersed in ice, observing the precipitation of the substrates. A pre-purification is performed using dry-flash separation with a gradient elution of hexane to methanol. Compound 8 is obtained with a yield of 60% (530 mg) following recrystallisation.
P.F.= 250 - 260 0C RMN 1H (400 MHz, CDCl3) δ: 12.14 (s, IH); 7.91 (d, J = 9.1 Hz, IH);
7.46 (d, J = 2.8 Hz, IH) ; 7.66 (dd, J = 9.0 e 2.8 Hz, IH) ; 6.67
(s, IH); 3.96 (s, 3H); 3.85 (s, 3H) .
RMN 13C (100 MHz, CDCl3) δ: 176.30; 162.28; 155.78; 136.18; 134.16;
126.73; 122.84; 120.91; 108.34; 103.19; 54.94; 52.90. IV (vmax, KBr) cm"1: 3440; 2935; 2865; 1729; 1639; 1552; 1024.
EM (relative intensity %) m/z: 207.50 (54); 173.2 (91); 73.2
(100) .
The compounds obtained were characterised using RMN 1H and 13C and it was observed that one of the methoxyls of enamines 5 and 6 disappeared. The shift rate of the ester methoxyls to the closed system was at 3.99 and 3.96 ppm respectively for compounds 7 and
8.
The hydrogen in position 3 shifted at 6.73 and 6.67 ppm respectively for 5 and 6. It is possible to observe the hydrogens linked to the nitrogens (position 1) at 12.03 and 12.14 ppm respectively for 7 and 8.
The presence of methoxyl modifies the coupling systems in the aromatic system and in the case of 7 ortho couplings with J at 8.0 and 10 Hz are observed with the signal at 8.14 ppm (J = 8.0 Hz) referring to H 9 while H 6 shows a shift at 7.97 ppm (J = 10.0
Hz), H 8 shows a shift at 7.35 ppm while the H 7 signal is observed at 7.66 ppm.
The spectrum of RMN 13C for 7 shows a carbonyl signal (in carbon C4 ) α, β-insaturated at 176.39 ppm while C3 shows a shift at 108.76 ppm. However, in the case of compound 8, a duplicate was observed at 7.9 ppm with J = 9 Hz referring to H 8 and the dd at 7.39 ppm, with J of 9.0 and 2.8 Hz referring to H 7, since it has an ortho coupling with H 8 and a meta coupling with H 6. The spectrum of RMN 13C for 7 shows a carbonyl (C4) α, β-insaturated at 176.29 ppm while C3 shows a shift at 103.76 ppm.
Preparation of 2-hydroximethyl-4-quinolinone (D and 2- hydroximethyl-6-methoxy-4-quinolinone (2) .
Figure imgf000019_0001
7, R = H 1,R = H 8,R = OCH3 2,R = OCH3
Selective reductions of functional carbonyl groups are important reactions in organic synthesis and several reducer agents have been developed. The borane-dimethyl sulphide (BH3-SMe2) complex is used in the reduction of esters with a strong preference for the group located in the α position of the hydroxyl groups (Saito, S., Ishikawa, T., Kuroda, A., Koga, K. & Moriwake, T. "A revised mechanism for chemoselective reduction of esters with borane-dimethyl sulfide complex and catalytic sodium tetrahydroborate directed by adjacent hydroxyl group". Tetrahedron, 48: 4067, 1992) .
It is acknowledged that the reduction of ketones in the presence of enones is possible using BH3-SMe2, while the ester group may be reduced with diisobutyl aluminium hydride (DIBAL-H) in the presence of enones (Larock, R. C. "Comprehensive organic transformations" A guide to functional group preparations p537, 1989) . There does not seem to be any prior mention in the literature for the type of system present in compounds 7 and 8. Therefore, the research required for the present invention was initially directed at testing reduction using BH3-SMe2 due to the simplicity of the work-up for this reagent when compared to DIBAL-H since borane may be removed from the reagent medium through distillation with anhydrous MeOH without the addition of water and it is also possible to remove any other impurities through recrystallisation.
The reduction reaction of the ester group to the hydroxyl group using borane proves to be chemoselective and it is possible to obtain both compounds 1 and 2 with a yield of 70%.
Experimentally, a balloon flask containing compound 7 (500 mg, 2.5 mmol) in anhydrous THF (10 inL) under N2 atmosphere at 00C has pure BH3-SMe2 complex (233 μL, 2.5 mmol) in a solution of THF (3 mL) added drop-by-drop. When the entire solution has been added, the reactor flask is left at room temperature. The reaction is monitored by FLC using AcOEt as eluent. Anhydrous MeOH (10 mL) is then added after 24 hours of reaction and the solution is distilled. Anhydrous MeOH (3 x 15 mL) is then added again. Compound 1 is obtained with a characterized yield of 70% (300 mg) . P. F. = 230 - 240 0C RMN 1H (200 MHz, CDCl3) δ: 8.04 (d, J = 8 Hz, IH); 7.69 - 7.56 (m, 2H); 7.31 - 7.23 (m, IH); 6.02 (s, IH); 4.48 (s, 2H).
RMN 13C (50 MHz, CDCl3) δ: 153.49; 140.42; 131.56; 125.25; 124.95;
122.88; 118.59; 105.59; 60.47.
IV (vmax, KBr) cm"1: 3384; 2946; 2917; 1619; 1359; 1083.
A balloon flask containing compound 8 (500 mg, 2.16 mmol) in anhydrous THF (10 mL) under N2 atmosphere at O0C has pure BH3-SMe2 complex (204 μL, 2.16 mmol) in a solution of THF (2 mL) added drop-by-drop. When the entire solution has been added, the reactor flask is left at room temperature. The reaction is monitored by FLC using AcOEt as eluent. Anhydrous MeOH (10 mL) is then added after 24 hours of reaction and the solution is distilled. Anhydrous MeOH (3 x 15 mL) is then added again, since the distillation process removes the remaining residues and impurities of BH3SMe2. Compound 2 is obtained with a characterized yield of 70% (300 mg) . P.F.= 250 - 260 0C RMN 1H ( 400 MHz , CDCl3 ) δ : 7 . 95 - 7 . 92 (m, IH ) ; 7 . 52 - 7 . 41 (m, 2H ) ; 6 . 63 ( s , IH ) ; 4 . 72 ( s , 2H ) ; 3 . 89 ( s , 3H ) .
RMN 13C (100 MHz, CDCl3) δ: 171.50; 156.79; 155.51; 134.45; 124.16; 123.15; 120.97; 103.11; 102.71; 60.00; 55.61. IV (vmax, KBr) cm"1: 3448; 2921; 2852; 1637; 1504; 1035.
The compounds are characterised by RMN 1H, whereby the forming of compound 1 is confirmed by the disappearance of the methoxyl group signal (3.99 ppm) and the appearance of the carbonylic methylene signal at 4.48 ppm, while the carbonylic methylene signal appears on the spectrum of RMN 13C at 60.47 ppm.
In the case of compound 2, the signal appearing at 4.72 ppm relates to carbinolic methylene and the disappearance pf methoxyl at 3.96 ppm.
Preparation of 4-ethoxy-6-methoxy-2-quinoline methyl carboxylate (9) and 4-ethoxy-6-methoxy-2-quinolilmethanol (10) .
The preparation of the quinolinic derivates occurs by a fast and clean reaction using DMF as solvent and K2CO3 as base and, depending on the intended product, using the alkylating agents EtBr or MeI (Edmont, D.; Rocher, R.; Plisson, C. & Chenault, J. "Synthesis and evaluation of quinoline carboxyguanidines as antidiabetic agents" Bioorg. Med. Chem. Lett., 10: 1831, 2000). The balance is shifted to form the O-alkylated product, with the selectivity depending on factors such as the alkyl halid structure, ring substitutes and the solvent (Comins, D. L. & Jianhua, G. "N - vs O- alkylation in the Mitsunobu reaction of 2- pyridone". Tetrahedron Lett., 35: 2819, 1994.). All compounds are obtained using the same reaction conditions and the yields were moderate to good(60 - 80%). A flask containing compound 8 (20 mg, 0.1 mmol) and K2CO3 (20.7 mg, 0.15 mmol) has added anhydrous DMF (50 μL) and MeI (9.5 μL, 0.15 mmol). The flask is agitated for a period of 12 hours at ambient temperature. The solution is then filtered using silica so as to remove the precipitate and the concentrated solvent following which the resulting material is purified using column chromatography using a gradient of n-hexane - methanol as eluent resulting in 17 mg of product 9 (80% yield) .
P. F. : 105 - 107 0C
RMN 1H (400 MHz, CDCl3) δ: 8.11 (d, J = 9.2 Hz, IH); 7.55 (s, IH); 7.46 (d, J = 2.8 Hz, IH); 7.48 (dd, J = 9.2, 2.8 Hz, 2H); 4.36 (q,
J = 7Hz, 2H); 4.06 (s, 3H); 3.96 (s, 3H); 1.60 (t, J = 7 Hz, 3H).
RMN 13C (100 MHz, CDCl3) δ: 166.46; 161.29; 158.91; 146.60; 144.42;
131.82; 123.42; 123.02; 101.01; 99.61; 64.53; 55.64; 53.08; 14.48.
IV (vmax, KBr) cm"1: 2933; 2856; 1730; 1639; 1483; 1236; 1024. Compound 10 is produced following a procedure analogous to that described above for compound 9.
The compound 4-ethoxy-2-ethoxymethyl-6-methoxyquinoline (11) is prepared using NaH in DMF and DME to ascertain the influence of the hydroxyl group on the biological activity (Osornio, Y. M.; Miranda, L. D.; Cruz-Almanza, R. & Muchowski, J. M. "Radical cyclizations to quinolone and isoquinolone systems under oxidative and reductive reductions" Tetrahedron. Lett., 45:2855, 2004.).
Figure imgf000022_0001
Compound 11 is characterised by RMN 1H and its formation is confirmed by the appearance of two carbonillic methylene signs at 4.33 and 3.67 ppm apart from the methyls at 1.59 and 1.31 ppm, while the spectrum of RMN 13C shows the appearance of carbonillic methylenes at 74.39; 66.35; 64.09 ppm. The compounds selected for the initial screening are shown in Figure 2 in annex. This screening was for the venoms of the Bothrops jararacussu, B. moojeni, B. alternatus and B. jararacussu BjussuMP-I snakes to determine promising compounds.
This first assay established that 10, 1, 2, 11 and 13 presented partial inhibition properties over coagulant serine proteases with 2 being outstanding due to the added potential of inhibiting the haemorrhagic metalloprotease of the venoms and thus proving the most promising of the tested compounds illustrated in Figure 2.
Therefore, further assays were performed to determine the efficiency of compound 2 for various other activities. Figure 3 A presents the effects of 2 on haemorrhages induced by the different venoms of the Bothrops genus snakes and an isolated metalloprotease .
The inhibition of haemorrhagic activity suggests interaction of the inhibitor with a metal and/or metalloprotease, thus neutralising effects. Likewise, compound 2 significantly inhibits proteolytic activity on casein and coagulants in human plasma induced by snake venoms and isolated enzymes, metalloprotease (Figure 3 B) or serine protease (Figure 3 C) , respectively.
The proteolytic activity induced by Class I (neuwiedase isolated from B. neuwiedi) and III (BjussuMP-I isolated from B. jararacussu) metalloproteases was inhibited by compound 2 by approximately 67 and 70%, respectively, at a ratio of 1:10 protease : inhibitor (m/m) .
The results for compound 2 show that it displays powerful coagulation action for the venoms of B. jararacussu and C. d. terrificus with this activity probably being due to the interaction of the active principle with the thrombin type enzymes BjussuSP-I and gyroxin respectively isolated from these same venoms (Figure 3C) . The inhibition of fibrinogenolytic activity induced by serine protease and metalloprotease enzymes is shown in Figure 4A. However, the mechanism of these compounds remains unknown but, nevertheless, SDS-PAGE techniques reveal no proteolytic degradation of the venom proteins as can be seen in Figure 4 B. Figure 4A shows the inhibition of fibrinogenolytic activity by the compound. SDS-PAGE shows the proteolytic activity on bovine fibrinogen caused by the venom of the B. jararacussu snake and isolated proteases. Lanes: 1 - Fibrinogen + venom of B. jararacussu (4μg) + 2 (40μg); 2 - Fibrinogen + enzyme BjussuSP-I (2μg) + 2 (20μg) ; 3 - Fibrinogen + BjussuMP-I (2μg) + 2 (20μg) ; 4 - Fibrinogen control. The enzymes were incubated together with 2 for 30 minutes at 37°C. The results are expressed by the mean ± S. D (n = 3) . (B) : Interaction between the venom of the B. jararacussu snake and 2. Samples containing venom/toxin (20μg) and the 88 (600μg) were incubated for 30 minutes at 37°C at a ratio of 1:30 (w/w) . Lanes: 1 - BthTX-I + 2; 2 - BthTX-II + 2; 3 - venom of B. jararacussu + 2; 4 -only BthTX-I; 5 -only BthTX-II; 6 -only the venom of B. jararacussu.
In the assays for myotoxicity, oedema, and activity for phospholipase in vivo, compound 2 partially reduced these effects when induced by the venoms of B. jararacussu and C. durissus terrificus and isolated PLA2S (A
Figure 5 shows the inhibitory activity for myotoxicity, oedema and phospholipase by compound 2. Figure 5A shows the effect of 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II). Figure 5B illustrates the effects of 2 on the oedems inducing activity caused by the venom of B. jararacussu and isolated PLA2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and acid Asp49 BthA-I-PLA2) . Figure 5C displays the phospholipase activity induced by the venom of B. jararacussu and C. d. terrificus and isolated PLA2s (BthTX-II and CB) . The results are expressed by the mean ± standard deviation (n = 6) .
The muscle damage inflicted by the venom of Bothrops is partially caused by a group of proteins having PLA2 structures (Gutierrez, J. M. & Lomonte, B. "Phospholipase A2, myotoxins from Bothrops snake venoms". Toxicon, 33:1405, 1995; Soares, A. M. & Giglio, J. R. Chemical modifications of phospholipases A2 from snake venoms: Effects on catalytic and pharmacological properties. Review. Toxicon, 42: 855, 2003) .
Compound 2 inhibited the myotoxic activity of both enzymes of Asp49 BthTX-II and Lys49 BthTX-I phospholipases A2 of B. jararacussu. Compound 2 proved more efficient in neutralising PLA2 activity induced by basic Asp49 PLA2S (BthTX-II and CB) in A Figure 5C than that induced by the pure venoms and the acid isoform Asp49 BthA-I-PLA2. These data suggest a more specific link with basic PLA2S, intermediated by interactions of probable electrostatic cause and supports various authors who have pointed out the distinct or partial power of the overlap of catalytic sites and another pharmacologic one. (Soares, A. M. & Giglio, J. R. Chemical modifications of phospholipases A2 from snake venoms: Effects on catalytic and pharmacological properties. Review. Toxicon, 42: 855, 2003.).
In conclusion, compound 2 inhibits haemorrhages, enhances coagulation, proteolytic activity, oedema and myotoxicity induced by the venom of the Bothrops and Crotalus snakes and isolated metalloprotease, serine protease and phospholipases A2 enzymes demonstrating that the inhibitor is a good tool having potential antivenin activity.
The pharmacological efficiency of compound 2 is superior in inhibiting the proteases induced by PLA2S and thus provided information for development of therapeutic agents for the treatment of haemostatic diseases. Furthermore, the inhibitor has potential use as a complementary antivenin and is an alternative for treating poisoning caused by snake bite.
Results have demonstrated that the compounds may be used as anti-inflammatories, antirheumatics, analgesics, immunosuppressors, antivenins, antithrombotics, anti-allergies and expectorants as well as for the treatment of white blood cell disorders and haemostatic system disorders amongst other therapeutic applications; in illnesses related to white blood cell disorders, such as autoimmune and inflammatory diseases including rheumatism amongst others, as well as anti-coagulants, antivenin, analgesics, antithrombotics and other therapeutical applications.
In the assays for myotoxicity, oedema, and activity for phospholipase in vivo, compound 2 partially reduced these effects when induced by the venoms of B. jararacussu and C. durissus terrificus and isolated PLA2S (A
Figure 5 shows the inhibitory activity for myotoxicity, oedema and phospholipase by compound 2. Figure 5A shows the effect of 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II) . Figure 5B illustrates the effects of 2 on the oedems inducing activity caused by the venom of B. jararacussu and isolated PLA2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and acid Asp49 BthA-I-PLA2) . Figure 5C displays the phospholipase activity induced by the venom of B. jararacussu and C. d. terrificus and isolated PLA2s (BthTX-II and CB) . The results are expressed by the mean ± standard deviation (n = 6) .
The muscle damage inflicted by the venom of Bothrops is partially caused by a group of proteins having PLA2 structures.
Compound 2 inhibits the myotoxic activity of both enzymes Asp49 BthTX-II and Lys49 BthTX-I phospholipases A2 of B. jararacussu. Compound 2 proved more efficient in neutralising PLA2 activity induced by basic Asp49 PLA2S (BthTX-II and CB) in A Figure 5C than that induced by the pure venoms and the acid isoform Asp49 BthA-I-PLA2.
Figure 5 shows the inhibitory activity for myotoxicity, oedema and phospholipase by compound 2. Figure 5A shows the effect of 2 on the myotoxicity induced by the venom of B. jararacussu and isolated myotoxins (BthTX-I and II). Figure 5B illustrates the effects of 2 on the oedems inducing activity caused by the venom of B. jararacussu and isolated PLA2s (basic Lys49 BthTX-I, basic Asp49 BthTX-II and acid Asp49 BthA-I-PLA2) . Figure 5C displays the phospholipase activity induced by the venom of B. jararacussu and C. d. terrificus and isolated PLA2S (BthTX-II and CB) . The results are expressed by the mean ± standard deviation (n = 6) .
This data suggests a more specific link with basic PLA2S, intermediated by interactions of probable electrostatic cause and supports various authors who have pointed out the distinct or partial power of the overlap of the catalytic sites and another pharmacologic one, as related in the article by Soares, A. M. & Giglio, J. R. Chemical modifications of phospholipases A2 from snake venoms: Effects on catalytic and pharmacological properties. Review. Toxicon, 42: 855, 2003.
Therefore, compound 2 inhibits haemorrhages, enhances coagulation, proteolytic activity, oedema and myotoxicity induced by the venom of the Bothrops and Crotalus snakes and isolated metalloprotease, serine protease and phospholipases A2 enzymes demonstrating that the inhibitor is a good tool having potential antivenin activity.
The compounds were tested against snake venom in accordance with the procedures described below:
Proteolytic activity in casein
Snake venom or isolated metalloprotease (40 μg) is incubated with casein 1% (w/v) (1.0 mL) in a buffer solution of 0.1 M Tris- HCl (pH 8.0) for 30 minutes at 370C. The reaction is ended through the addition of a trichloroacetic acid solution at 5 % (v/v) (1.0 mL) and the mixture is left standing for 30 minutes at ambient temperature and then centrifuged (2000 rpm) for 5 minutes at 250C. The proteolytic activity is estimated by the measurement of the absorbance of the supernatant at 280 nm.
Coagulant Activity
Aliquots of plasma (0.2 mL) were incubated with venom or venom/inhibitor (50 μL) in varying proportions (m/m) during a period of 30 minutes at 370C and the coagulation time was verified. The control tubes included plasma incubated with phosphate buffered saline solution (PBS) + calcium or dimethyl sulphoxide or only the compound.
Oedema Inducing Activity The oedemas are induced by the direct injection of venom (20 μg) and purified proteins (20 μg) into the right leg of male Swiss mice (18-22 g) . Inhibition activity is verified incubating the venom or isolated protein with the inhibitor in varying concentrations (m/m) . The control groups are injected with 50μL of phosphate buffered saline solution (PBS, pH = 7.2) alone, dimethyl sulphoxide (DMSO) or the compounds. Oedema progression is assessed through measurement of the decrease in blood pressure using a pachymeter (Mitutoyo, Japan) at intervals of 30 and 60 minute after injection. Myotoxic Activity
Male Swiss mice (18-22 g) are injected with solutions containing 25 μg/50 μL doses of venom or toxin intra-muscularly at the right leg. The mixtures of venom or toxin/inhibitor (m/m) are then verified. The controls receive phosphate buffered saline solution or just inhibitor. The mice are bled at the tail 3 hours after injection and the blood is collected in capillary tubes containing heparin. The creatin kinase (CK) activity of the plasma is determined using a Bioclin Kit (Bioclin, Brasil) . This activity is expressed in units/L, a corresponding unit for the production of one micromol of nicotinamide adenine dinucleotide (NADH) /min at 300C.
Phospholipase A2 Activity Indirect haemolytic activity is tested using agarose- erythrocyte-egg yolk gel as a substrate. The compounds are tested following incubation with the pure venoms or PLA2 in varying ratios (m/m) .
The data was analysed according P the value of < 0.05, which was considered as indicative of significance.

Claims

1. 4-quinolinones, comprising the formula {I\
Figure imgf000029_0001
Formula (I) Whereby: R = H or OCH3
Ri and R2 are selected independently of each other, with H, OH, an alkyl group of Ci - C4, an alkoxy group of Ci - C5, a - OCO-R7 group, and a group derived from a saccharide, optionally Ri and R2 together forming a methylenedioxy group, a phenyl group or a phenyl group substituted in 1 and 3 with groups selected from H, an alkoxy group in Cx - C4, a -OCOR7 group, a -0-SO2-R7 group, halogen, an alkyl or CF3 group, and -NR7R8 group, in which R7 and R8 are selected independently of each other, from hydrogen, alkyl group in C1 - C5, alkenyl group, alkyl phenyl group (Ci - C4) , dimethylamine, rings with 4 - 6 member heterocycles, optionally with one or more heteroatoms selected from oxygen, nitrogen and sulphur or a methylpiperazinyl group,
R3 is selected from H, alkyl group in C1 - C4, alkenyl group, a -CO-R8 group and a -A-R9 group, -CO2R9' group in which R9' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, -NH2, -CHCH2CH2; R8 is an alkyl group in Ci-C4; A is an alkylene group in C1 - C4; R9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur and nitrogen, CN, hydroxyl, - COOR10 and CONR11R12 groups, a -NRi3Rx4 group, a -CORi5 group and a OSO2Ri6 group;
Rio/ R11/ Ri2/ Ri4 and Ri5 are independently selected from hydrogen, alkyl groups in Ci - C4, halogen and alkyl phenyl group (Ci - C4), Ri6 is selected from the phenyl group and the alkyl phenyl group (Cx - C4) ;
R4 = OH, halogens, alkoxy group in Ci - C6, alkoxy benzyl group, -CO-Ri7 in which R17 is alkyl Ci - C6 or p-methoxy benzyl, -0-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from a saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups Cx - C4, a -OCOR7 group, a -0- SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons.
2. 4-quinolinones in accordance with claim 1, wherein R = H and R4 = OH (1) or, alternatively, R = OCH3 and R4 = OH (2) .
3. 4-quinolinones in accordance with claims 1 and 2, wherein said 4-quinolinones are used to inhibit proteases, lipases, phospholipases and enzymes.
4. 4-quinolinones in accordance with claims 1 and 2, wherein said 4-quinolinones are used in the treatment of inflammatory diseases, autoimmune diseases, as antirheumatic, analgesic, antivenin, antithrombotic, anti-allergic, expectorant, disorders of white blood cells, disorders of the haemostatic system, amongst other pharmaceutical applications.
5. Quinolines, comprising the formula (Ii;
Figure imgf000030_0001
Formula (II]
Whereby:
R = H or CH3 R1 and R2 are selected independently of each other, with H, OH, an alkyl group of Ci - C4, an alkoxy group of Ci - C5, a - OCO-R7 group, and a group derived from a saccharide, optionally Ri and R2 together forming a methylenedioxy group, a phenyl group or a phenyl group substituted in 1 and 3 with groups selected from H, an alkoxy group in Cx - C4, a -OCOR7 group, a -0-SO2-R7 group, halogen, an alkyl or CF3 group, and -NR7R8 group, in which R7 and R8 are selected independently of each other, from hydrogen, alkyl group in Ci - C5, alkenyl group, alkyl phenyl group (Ci - C4) , dimethylamine, rings with 4 - 6 member heterocycles, optionally with one or more heteroatoms selected from oxygen, nitrogen and sulphur or a methylpiperazinyl group, R3 is selected from H, alkyl group in C1 - C4, alkenyl group, a -CO-R8 group and a -A-R9 group, -CO2R9' group in which R9' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, -NH2, -CHCH2CH2; R8 is an alkyl group in C1-C4; A is an alkylene group in C1 - C4; R9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur, nitrogen, CN, hydroxyl, - COOR10 and CONR11R12 groups, a -NR13R14 group, a -COR15 group and a OSO2R16 group;
Rio/ Rii/ Ri2/ Ri4 and R15 are independently selected from hydrogen, alkyl groups in C1 - C4, halogen and alkyl phenyl group (C1 - C4) , R16 is selected from the phenyl group and the alkyl phenyl group (C1 - C4);
R4 = OH, halogens, alkoxy group in C1 - C6, alkoxy benzyl group, -CO-R17 in which R17 is alkyl C1 - C6 or p-methoxy benzyl, -0-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups C1 - C4, a -OCOR7 group, a -0- SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons.
6. Quinolines in accordance with claim 5, wherein said quinolines are obtained from the reaction of the 4- quinolinone compounds of formula (I) with K2CO3 and alkylation agents.
7. Quinolines in accordance with claim 5, wherein R = OCH3, R3 = CH2CH3, R4 = OH e R = OCH3, R3 = CH2CH3, R4 = OCH2CH3.
8. Quinolines in accordance with claims 5 and 7, wherein said quinolines are used to inhibit proteases, lipases, phospholipases and enzymes.
9. Quinolines in accordance with claims 5 and 7, wherein said quinolines are used in the treatment of inflammatory diseases, autoimmune diseases, as antirheumatic, analgesic, antivenin, antithrombotic, anti-allergic, expectorant, disorders of white blood cells, disorders of the haemostatic system, amongst other pharmaceutical applications.
10. Process for the preparation of the 4-quinolinones in accordance with claims 1 and 2, from anilin or derivates in the presence of DMAD, the product is refluxed with diphenyl ether to obtain compounds 7 and 8, wherein the process that consists in making compounds 7 and 8 react with a borane- dimethyl sulphide complex (BH3-SMe2), obtaining the compounds 2-hydroximethyl-4-quinolinone 1 and 2-hydroximethyl-6- methoxi-4-quinolinone 2.
Figure imgf000032_0001
11. Process in accordance with claim 10, wherein said process uses groups comprising acids, aldehydes, amides, small chain esters (C1 - C5) , as initial material in the reduction with borane, while the group of solvents used in the reaction comprise ethers, THF and dioxane, hydrocarbonate solvents including toluene, benzene and halogenised hydrocarbonates, dichloromethane, chloroform, 1.2-dichloroethane .
12. Process in accordance with claim 10, wherein said process uses reductor agents, such as BH3SMe2, BH3, DIBAL-H.
13. Pharmaceutical formulations, comprising an effective amount of the compound of formula (I) in accordance with claims 1 and 2
Figure imgf000033_0001
Formula (I) Whereby: R = H or CH3
R1 and R2 are selected independently of each other, with H, OH, an alkyl group of Ci - C4, an alkoxy group of Ci - C5, a - OCO-R7 group, and a group derived from a saccharide, optionally Ri and R2 together forming a methylenedioxy group, a phenyl group or a phenyl group substituted in 1 and 3 with groups selected from H, an alkoxy group in C1 - C4, a -OCOR7 group, a -0-SO2-R7 group, halogen, an alkyl or CF3 group, and -NR7R8 group, in which R7 and R8 are selected independently of each other, from hydrogen, alkyl group in C1 - C5, alkenyl group, alkyl phenyl group (Ci - C4), dimethylamine, rings with 4 - 6 member heterocycles, optionally with one or more heteroatoms selected from oxygen, nitrogen and sulphur or a methylpiperazinyl group,
R3 is selected from H, alkyl group in Ci - C4, alkenyl group, a -CO-R8 group and a -A-R9 group, -CO2R9' group in which R9' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, -NH2, -CHCH2CH2; R8 is an alkyl group in Ci-C4; A is an alkylene group in Ci - C4; R9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur, nitrogen, CN, hydroxyl, - COOR10 and CONRHRI2 groups, a -NR13R14 group, a -COR15 group and a OSO2R16 group; R10/ Rn, Ri2/ Ri4 and R15 are independently selected from hydrogen, alkyl groups in C1 - C4, halogen and alkyl phenyl group (C1 - C4) , R16 is selected from the phenyl group and the alkyl phenyl group (C1 - C4); R4 = OH, halogens, alkoxy group in C1 - C6, alkoxy benzyl group, -CO-R17 in which R17 is alkyl C1 - C6 or p-methoxy benzyl, -O-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups C1 - C4, a -OCOR7 group, a -0- SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons .
14. Pharmaceutical formulations in accordance with claim 13, comprising an effective amount of a compound whereby R = H and R4 = OH or alternatively whereby R = OCH3 and R4 = OH.
15. Pharmaceutical formulations in accordance with claim 13, wherein said pharmaceutical formulations are used to inhibit proteases, lipases, phospholipases and enzymes.
16. Pharmaceutical formulations in accordance with claim 13, wherein said pharmaceutical formulations are used in the treatment of inflammatory diseases, autoimmune diseases, as antirheumatic, analgesic, antivenin, antithrombotic, antiallergic, expectorant, disorders of white blood cells, disorders of the haemostatic system, amongst other pharmaceutical applications.
17. Pharmaceutical formulations, comprising an effective amount of the compound of formula (II) in accordance with claims 5 and 7
Figure imgf000035_0001
Formula II Whereby: R = H or CH3
R1 and R2 are selected independently of each other, with H, OH, an alkyl group of Ci - C4, an alkoxy group of C1 - C5, a - OCO-R7 group, and a group derived from a saccharide, optionally R1 and R2 together forming a methylenedioxy group, a phenyl group or a phenyl group substituted in 1 and 3 with groups selected from H, an alkoxy group in Ci - C4, a -OCOR7 group, a -0-SO2-R7 group, halogen, an alkyl or CF3 group, and -NR7R8 group, in which R7 and R8 are selected independently of each other, from hydrogen, alkyl group in Ci - C5, alkenyl group, alkyl phenyl group (Ci - C4), dimethylamine, rings with 4 - 6 member heterocycles, optionally with one or more heteroatoms selected from oxygen, nitrogen and sulphur or a methylpiperazinyl group;
R3 is selected from H, alkyl group in Ci - C4, alkenyl group, a -CO-R8 group and a -A-R9 group, -CO2R9' group in which R9' is a benzyl group, branched or linear alkyl group, p-methoxy benzyl group, -NH2, -CHCH2CH2; R8 is an alkyl group in Ci-C4; A is an alkylene group in C1 - C4; R9 is selected from heterocycle groups with 5 or 6 members containing 1 to 4 heteroatoms of oxygen, sulphur, nitrogen, CN, hydroxyl, - COORio and CONRHRI2 groups, a -NRi3Ri4 group, a -COR15 group and a OSO2Ru group;
Ri0, Rn, Ri2, Ri4 and R15 are independently selected from hydrogen, alkyl groups in C1 - C4, halogen and alkyl phenyl group (Ci - C4), R16 is selected from the phenyl group and the alkyl phenyl group (Ci - C4);
R4 = OH, halogens, alkoxy group in Ci - C6, alkoxy benzyl group, -CO-R17 in which R17 is alkyl C1 - C6 or p-methoxy benzyl, -0-SO2-R7' in which R7' is an alkyl group or CF3 group, group derived from saccharide; R5 is H, halogen, phenyl group or phenyl substituted 1 or 3 times with groups selected from H, alkoxy groups C1 - C4, a -OCOR7 group, a -O- SO2-R7' group in which R7' is an alkyl group or CF3 group, benzylamine group, and group derived from saccharide, alkyl group, -COOH, or salts, hydrates and pharmacologically acceptable pro-pharmacons .
18. Pharmaceutical formulations in acordance with claim 17, comprising an effective amount of a compound whereby R =
OCH3, R3 = OCH2CH3, R4 = OCH2CH3 or alternatively whereby R = OCH3, R3 = OCH2CH3, R4 = OH.
19. Pharmaceutical formulations in accordance with 17, comprising an effective amount of a compound whereby R = OCH3, R3 =
OCH2CH3, R4 = OCH2CH3 or alternatively, whereby R = OCH3, R3 = OCH2CH3, R4 = OH.
20. Pharmaceutical formulations in accordance with claiml7 wherein said pharmaceutical formulations are used to inhibit proteases, lipases, phospholipases and enzymes.
21. Pharmaceutical formulations in accordance with claiml7, wherein said pharmaceutical formulations are used in the treatment of inflammatory diseases, autoimmune diseases, as antirheumatic, analgesic, antivenin, antithrombotic, antiallergic, expectorant, disorders of white blood cells, disorders of the haemostatic system, amongst other pharmaceutical applications.
22. Pharmaceutical formulations in accordance with claiml comprising: a) a compound of general formula (I) as active principle used in a quantity of not less than 0.001% by weight of the final composition, and b) not less than one pharmaceutically appropriate excipient.
23. Pharmaceutical formulations in accordance with claim 5 comprising: a) a compound of general formula (II) as active principle used in a quantity of not less than 0.001% by weight of the final composition, and b) not less than one pharmaceutically appropriate excipient.
24. Pharmaceutical formulations in accordance with claims 13 and 17, wherein said pharmaceutical formulations are administered by oral, rectal, topical or parenteral route.
25. Pharmaceutical formulations in accordance with claims 13 and 17, wherein said pharmaceutical formulations are prepared in the form of pills, coated pills, capsules, inhalable powder, effervescent tablets, sublingual pills, syrups and oral solutions, injetable solutions, ointments, creams, gels and other pharmaceutical preparations known in pharmaceutical techniques.
26. Use of 4-quinolinones and Quinolines in accordance with claims 1, 2, 5 and 7 comprising a composition, formulation or medicine to treat animal or human illnesses.
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