US20020032164A1 - Antimicrobial compounds and methods for their use - Google Patents

Antimicrobial compounds and methods for their use Download PDF

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Publication number
US20020032164A1
US20020032164A1 US09/847,654 US84765401A US2002032164A1 US 20020032164 A1 US20020032164 A1 US 20020032164A1 US 84765401 A US84765401 A US 84765401A US 2002032164 A1 US2002032164 A1 US 2002032164A1
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Prior art keywords
compound
antimicrobial composition
protonated
group
alkyl
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Abandoned
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US09/847,654
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Inventor
Roderic Dale
Steven Gatton
Amy Arrow
Terry Thompson
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Lakewood-Amedex Inc
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Dale Roderic M. K.
Gatton Steven L.
Amy Arrow
Terry Thompson
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Priority claimed from US09/222,009 external-priority patent/US6211349B1/en
Priority claimed from US09/281,858 external-priority patent/US6627215B1/en
Priority to US09/847,654 priority Critical patent/US20020032164A1/en
Application filed by Dale Roderic M. K., Gatton Steven L., Amy Arrow, Terry Thompson filed Critical Dale Roderic M. K.
Publication of US20020032164A1 publication Critical patent/US20020032164A1/en
Priority to CA2827671A priority patent/CA2827671C/fr
Priority to ES10184218.5T priority patent/ES2549766T3/es
Priority to PT101842185T priority patent/PT2311466E/pt
Priority to PCT/US2002/013910 priority patent/WO2002089581A1/fr
Priority to AU2002305336A priority patent/AU2002305336B2/en
Priority to DK10184218.5T priority patent/DK2311466T3/en
Priority to JP2002586732A priority patent/JP4347573B2/ja
Priority to EP02734149A priority patent/EP1389909B1/fr
Priority to CA2445381A priority patent/CA2445381C/fr
Priority to EP10184218.5A priority patent/EP2311466B1/fr
Priority to US10/937,094 priority patent/US7176191B2/en
Priority to US11/552,951 priority patent/US7868162B2/en
Assigned to LAKEWOOD-AMEDEX, INC. reassignment LAKEWOOD-AMEDEX, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OLIGOS ETC., INC.
Priority to JP2009120362A priority patent/JP5503900B2/ja
Priority to US12/985,786 priority patent/US20110135713A1/en
Priority to JP2013210031A priority patent/JP5883838B2/ja
Priority to CY20151100909T priority patent/CY1116784T1/el
Priority to JP2015219286A priority patent/JP6097372B2/ja
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/66—Phosphorus compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
    • A01N57/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing acyclic or cycloaliphatic radicals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
    • A01N57/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing heterocyclic radicals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/70—Carbohydrates; Sugars; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0014—Skin, i.e. galenical aspects of topical compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/02—Local antiseptics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04—Antibacterial agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/10—Antimycotics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/20—Antivirals for DNA viruses
    • A61P31/22—Antivirals for DNA viruses for herpes viruses

Definitions

  • the invention relates generally to the field of protonated chemicals and specifically to protonated compounds used as pH stabilizers and therapeutics containing such molecules.
  • Streptococcus pneumoniae is a leading cause of morbidity and mortality in the United States (M. M. W. R., Feb. 16, 1996, Vol. 45, No. RR-1). Each year these bacteria cause 3,000 cases of meningitis, 50,000 cases of bacteremia, 500,000 cases of pneumonia, and 7,000,000 cases of otitis media. Case fatality rates are greater than 40% for bacteremia and greater than 55% for meningitis, despite antibiotic therapy. In the past, Streptococcus pneumoniae were uniformly susceptible to antibiotics; however, antibiotic resistant strains have emerged and are becoming widespread in some communities.
  • the present invention provides molecules having antimicrobial activity, which molecules have two end blocks and at least one proton acceptor site.
  • the invention also provides for compositions of the invention comprising a protonated antimicrobial compound and an excipient.
  • the protonated compounds of the invention can be used as the sole active agent in the composition, or may be used in conjunction with another active agent to enhance the efficacy of compositions against resistant strains of bacteria and opportunistic fungi.
  • the structure of the compounds of the invention is X-Y-Z, where X and Z are end blocking groups, preferably alkyls or O-alkyls, which may be the same or different, and Y is a phosphorous containing molecule with protonation sites.
  • Y is one or more substituted or unsubstituted phosphate groups.
  • Exemplary structures of this embodiment have a Y structure as follows (Structures 1 and 2):
  • X and Z are end blocking groups, which may be the same or different, and R is a difunctional alkyl, aryl, alkenyl (preferably containing 1-20 carbons, more preferably 1-6 carbons), or some combination of the three (e.g., a difunctional alkyl, aryl, alkenyl, alkylaryl, alkylalkenyl, arylalkenyl or alkylarylalkenyl group), as a derivative of primary, secondary or tertiary alcohols; phenols; or enols either separately or in any combination. It may be monocyclic, polycyclic, heterocyclic or linear in form, either separately or in any combination of forms.
  • It may have free alcoholic or phenolic hydroxyls in addition to the two converted into phosphodiesters.
  • functional groups such as but not limited to amines, carboxylates, carboxyaldehydes, ketones, and the structure may be modified by the addition of halogens or other groups intended to modify the electronegativity of the structure of the molecule.
  • Y is a sugar structure, preferably pentose or hexose, flanked by substituted or unsubstituted phosphate groups. Examples of such sugar groups can be seen in Structures 3A, 3B below:
  • Q is O, S, P-H, P-OH, P-alkyl, P-aryl, P-acyl, N-H, N-OH, N-alkyl, N-aryl, or N-acyl;
  • A is H, alkyl, or alkyl-(O-alkyl), aryl, alkenyl, alkanol, phenol, or enol;
  • X and Z are end blocking groups that may be the same or different.
  • W is H, or a purine or pyrimidine, or a modified analogue of a purine or pyrimidine.
  • V or Q is independently O, S, P-H, P-OH, P-alkyl, P-aryl, P-acyl, N-H, N-OH, N-alkyl, N-aryl, or N-acyl, —CH2, —CH(OH)—, —CH2(O-alkyl)—;
  • X and Z are end blocking groups that may be the same or different.
  • W is H, or a purine or pyrimidine, or a modified analogue of a purine or pyrimidine.
  • Q and/or V independently may be —CH 2 —, —CH(OH)—, or —CH(O-alkyl)—.
  • the sugar is a pentose molecule with a substitution at the 2 carbon site (hereafter “2-R substituted” and the like), as illustrated as Structure 5:
  • Q is O, S, P-H, P-OH, P-alkyl, P-aryl, P-acyl, or N-H;
  • the X and Z groups are chemical moieties that provide stability.
  • the end blocking groups may be any number of chemical entities, provided the end block prevents degradation of the molecule.
  • the end blocks are alkyl or O-alkyl, where the alkyl moiety can be straight chained, branched or cyclic but is preferably a straight chain containing 1-4 carbons.
  • X and Z may be the same chemical moiety (e.g, butyl groups) or two different chemical moieties (e.g., X is a butyl group and Z is a butanol).
  • the compound is a protonated molecule having end blocking groups to prevent degradation, and a sugar group with a 2-R or 2-OR modification.
  • One example of such a molecule is shown as Structure 5.
  • the protonated compounds of the invention are acidified to give a pH when dissolved in water of less than pH 6 to about 1, more preferably less than pH 4.5 to about 1, and even more preferably less than pH 3 to about 2.
  • the invention also provides methods for inhibiting or preventing the growth of bacteria, fungus, or virus, by contacting the infectious organism with a composition comprising a protonated compound of the present invention.
  • the invention specifically provides therapeutic methods of using protonated compounds as inactive ingredients in topical compositions containing an active ingredient, e.g., an antibiotic, antifungal, or antiviral.
  • the preferred method of treatment comprises the administration of the protonated compounds with an appropriate excipient to an animal.
  • the protonated compounds are administered to alleviate the symptom of the bacterial growth, or in an amount effective for treatment of a bacterial infection.
  • the invention further provides the use of the protonated compounds as an inactive biostatic or biocidal preservative in compositions, in conjunction with an acceptable pharmaceutical carrier, to prepare medicinal compositions for the treatment of bacterial infections in animals, and more preferably mammals, including humans.
  • the invention further provides the use of the protonated compounds as an active ingredient having antifungal properties against infectious agents such as Candida albicans and Trichophyton.
  • the invention further provides the use of the protonated compounds as an active ingredient having antiviral properties against infectious agents such as herpes simplex found in cold sores.
  • the invention further provides the use of the described protonated compounds as active ingredients in a topical skin cream with an acceptable cosmetic carrier.
  • topical skin creams may contain additives such as emollients, moisturizers, fragrance, and the like.
  • the invention further provides disinfectant solutions comprised of the described protonated compounds.
  • the disinfectant may be suitable for use on skin, due to the non-toxicity of the protonated compounds, or may be used for disinfection of a surface such as medical devices, e.g. a surgical instrument.
  • the protonated compounds are non-toxic to a subject treated with the a composition containing the protonated compounds
  • FIG. 1 illustrates the chemical structure of exemplary molecules of a preferred embodiment of the invention.
  • FIG. 2 illustrates alkyl phosphate structures that may be used as the central group (Y) in the compounds of the invention; X and Z are end blocking groups that may be the same or different.
  • FIG. 3 illustrates exemplary sugar structures of the central group (Y) of molecules of the invention.
  • FIG. 4 illustrates exemplary single ring chemical moieties (W) that may be attached to a sugar group in the central group (Y) in the present invention.
  • FIGS. 5 and 6 illustrate exemplary double and multiple ring chemical moieties (W) that may be attached to a sugar group in the central group (Y) in the present invention.
  • FIG. 7 illustrates exemplary partially or totally hydrogenated chemical moieties (W) that may be attached to a sugar group in the central group (Y) in the present invention.
  • FIG. 8 illustrates an exemplary oxidized ring structure (W) that may be attached to a sugar group in the central group (Y) in the present invention.
  • FIG. 9 illustrates an exemplary proton acceptor substituent (W) that may be attached to a sugar group in the central group (Y) in the present invention.
  • antimicrobial refers to an ability to kill or inhibit the growth of microorganisms (including, without limitation, viruses, bacteria, yeast, fungi, protozoa, etc.), or to attenuate the severity of a microbial infection.
  • the antimicrobial compounds of the present invention are compounds that may be used in the treatment of disease and infection.
  • protonation and “acidification” as used interchangeably herein refers to the process by which protons (or positively charged hydrogen ions) are added to proton acceptor sites on a compound of the invention.
  • the proton acceptor sites include the substituted or unsubstituted phosphates of the central group, as well as any additional proton acceptor sites on either the central group or the end blocking groups. As the pH of the solution is decreased, the number of these acceptor sites which are protonated increases, resulting in a more highly protonated compound.
  • protonated compound refers to a molecule of the invention that, when dissolved in water having a pH of 7 causes the pH of the solution to fall.
  • compounds are protonated by adding protons to the reactive sites on the molecule, although other modifications of the molecule are possible, and are intended to be encompassed by this term.
  • protonization can be accomplished, for example by incubating the compound in the presence of a strong acid, most preferably one with a volatile conjugate base.
  • end group and “end blocking group,” as used herein refers to any chemical moiety that prevents substantial nuclease degradation, and in particular exonuclease degradation, of a protonated compound.
  • the end group may be any chemical moiety that allows for proper protonation of the compound, including H, OH, SH, NH 2 , an alkyl group, an alkanol group, and the like.
  • the chemical modification is positioned such that it protects the central group of the molecule, i.e. the blocking group is the X or Z that protects the central group Y of the X-Y-Z structure.
  • the end group(s) and/or end-blocking group(s) of an X-Y-Z molecule may be the same or different.
  • active agent refers to compounds with known activity for the treatment of disease caused by microbes, and in particular agents that are effective in sublingual, intraocular, intraaural, and particularly topical, application.
  • Central or end groups may contain chemical moieties such as phosphodiesters, methylphosphonates, ethylphosphotriesters, methylphosphorothioates, methyl-p-ethoxy groups, methyls, alkyls, O-alkyls, O-alkyl-n(O-alkyl), fluorines, deoxy-erythropentofuranosyls, methyl ribonucleosides, methyl carbamates, methyl carbonates, inverted bases (e.g., inverted T's), etc.
  • these chemical moieties contain oxygen linkages groups, e.g. O-methyl or O-alkyl-n(O-alkyl).
  • alkyl refers to a straight chain, cyclic, branched or unbranched saturated or unsaturated hydrocarbon chain containing 1-20 carbon atoms (preferably 1-6), such as methyl, ethyl, propyl, tert-butyl, n-hexyl and the like.
  • alkanol refers to a branched or unbranched hydrocarbon chain containing 1-6 carbon atoms and at least one -OH group, such as methanol, ethanol, propanol, isopropanol, butanol, and the like.
  • treatment used herein to generally mean obtaining a desired pharmacologic and/or physiologic effect.
  • the effect may be prophylactic in terms of completely or partially preventing a disease or symptom thereof and/or may be therapeutic in terms of a partial or complete cure for a disease (or infection) and/or adverse effect attributable to the disease (or infection).
  • treatment includes:
  • (c) relieving a bacterial disease (i.e., causing regression and/or amelioration of the disease) and/or infection.
  • the invention is particularly directed toward treating patients with any infectious bacteria or fungi;
  • the present invention employs protonated compounds as antimicrobial agents, and in particular as antimicrobial agents having activity against bacteria, fungi, protozoa and viruses. These compounds are particular useful in medical applications, both allopathic and homeopathic.
  • the bacteriocidal/bacteriostatic effect also allows use of these compositions in compositions for sterilization (e.g., sterilization of skin or of a surface or an object such as a surgical instrument, etc.), or sanitization (e.g., the cleansing of a surface, instrument, etc. so as to render it free of undesirable concentrations of disease causing microorganisms (including viruses).
  • the protonated compounds themselves in specific concentrations have an antimicrobial preservative effect, and thus are also useful in preventing unwanted microbial growth in compositions.
  • the protonated compounds of the invention have a structure as follows:
  • Y is a structure comprising oxygen, phosphorous, and optionally carbon and X and Z are end groups comprising a blocking agent.
  • the end groups X and Z may be the same chemical moiety, or they may be different.
  • Y is one or more substituted or unsubstituted phosphate groups.
  • Exemplary structures of this embodiment have a Y structure as follows (Structures 1 and 2):
  • X and Z are end blocking groups, which may be the same or different, and R is a difunctional alkyl, aryl, alkenyl (preferably containing 1-20 carbons, more preferably 1-6 carbons), or some combination of the three, as a derivative of primary, secondary or tertiary alcohols; phenols; or enols either separately or in any combination It may be monocyclic, polycyclic, hetero cyclic or linear in form, either separately or in any combination of forms. It may have free alcoholic or phenolic hydroxyls in addition to the two converted into phosphodiesters.
  • amines such as but not limited to amines, carboxylates, carboxyaldehydes, ketones, and the structure may be modified by the addition of halogens or other groups intended to modify the electronegativity of the structure of the molecule.
  • Nu-5 A particularly preferred example of such compounds is Nu-5:
  • Y is a sugar structure, preferably pentose or hexose, flanked by substituted or unsubstituted phosphate groups.
  • X-Y-Z compounds containing such Y sugar groups are illustrated below:
  • Q is O, S, P-H, P-OH, P-alkyl, P-aryl, P-acyl, N-H, N-OH, N-alkyl, N-aryl, or N-acyl;
  • A is H, alkyl, alkoxy, or alkyl-(O-alkyl), aryl, alkenyl, alkanol, phenol, or enol;
  • X and Z are end blocking groups that may be the same or different.
  • W is H, or a purine or pyrimidine, or a modified analogue of a purine or pyrimidine.
  • Preferred examples of such compounds have X or Z blocking groups, which independently comprise a structure selected from the group consisting:
  • Preferred examples of such compounds have an A group, which comprises a structure selected from the group consisting: —H; —CH 3 ; —OCH 2 CH 2 O CH 2 CH 3 ; and —OCH 2 CH 3 .
  • V or Q is independently O, S, P-H, P-OH, P-alkyl, P-aryl, P-acyl, N-H, N-OH, N-alkyl, N-aryl, N-acyl, —CH2—, —CH(OH)—, —CH(O-alkyl)—;
  • X and Z are end blocking groups that may be the same or different.
  • W is H, or a purine or pyrimidine, or a modified analogue of a purine or pyrimidine
  • the sugar is a pentose molecule with a substitution at the 2 carbon site (hereafter “2-R substituted” and the like), as illustrated as Structure 5:
  • Q is O, S, P-H, P-OH, P-alkyl, P-aryl, P-acyl, or N-H;
  • the X and Z groups are chemical moieties that provide stability.
  • the end blocking groups may be any number of chemical entities, provided the end block prevents degradation of the molecule.
  • the end blocks are alkyl or O-alkyl, where the alkyl moiety can be straight chained, branched or cyclic but is preferably a straight chain containing 1-4 carbons.
  • X and Z may be the same chemical moiety (e.g., butyl groups) or two different chemical moieties (e.g., Z is a butyl group and X is a butanol).
  • a particularly preferred example of such compounds is the compound Nu-2 ((4-hydroxybutyl)-phosphate-5′-uridine-2′-methoxy-3′-phosphate-(4-hydroxybutyl)):
  • a further particularly preferred example of such compounds is the compound Nu-3 (butyl-phosphate-5′-thymidine-3′-phosphate-butyl):
  • a further particularly preferred example of such compounds is the compound Nu-4 (butyl-phosphate-5′-ribose-3′-phosphate-butyl):
  • Protonation of the compounds of the invention is the process by which protons (or positive hydrogen ions) are added to the reactive sites on the molecule.
  • the pH obtained when the compounds are dissolved in water having a pH of 7 decreases, and thus the amount of protonation of the compounds of the invention can be determined by measuring the pH of solutions of water after addition of the compounds of the present invention.
  • the compounds of the present invention are protonated so that when dissolved in water (pH 7), they form an aqueous solution having a pH of between less than pH 7 to about 1, preferably between less than about pH 6 to about 1, and more preferably between less than about pH 5 to about 1.
  • the compounds of the present invention are protonated so that when dissolved in water (pH 7), they form an aqueous solution having a pH of between less than about pH 4.5 to about 1, preferably between less than about pH 4 to about 1, more preferably between less than about pH 3 to about 1, and still more preferably less than about pH 2 to about 1.
  • the pH can be adjusted to be optimal for any given active agent by controlling the amount of protonation of the compound.
  • Percent acid degradation may be determined using analytical HPLC to assess the loss of functional molecules, or by other suitable methods. Acid degradation is generally measured as a function of time.
  • the protonated compounds of the invention are also nuclease resistant, which allows these molecules to maintain activity (e.g., pH stability) in an in vivo setting. Percent degradation of the molecules in a setting containing nuclease may be determined by methods known to those skilled in the art, such as mass spectroscopy. Nuclease degradation is generally measured as a function of time.
  • a reference compound is employed in determining the extent or rate of acid or nuclease degradation.
  • Bactericidal and/or bacteriostatic activity of the compositions including compounds of the invention may be measured using any number of methods available to those skilled in the art.
  • One example of such a method is measurement of antibacterial activity through use of a MIC (minimal inhibitory concentration) test that is recognized to be predictive of in vivo efficacy for the treatment of a bacterial infection with antibiotics.
  • the compositions of the invention display antibacterial activity in this test, even without pretreatment of the bacteria to permeabilize the membrane.
  • the protonated compound has a sugar group, preferably either a ribose or a glucose group.
  • the sugar structure of the molecules of the invention may be modified from that of a naturally occurring sugar, i.e. the overall structure of the sugar group is maintained, but one or more residues of the sugar is substituted and/or the sugar structure contains an additional residue compared to the unsubstituted form. See T. W. Graham Solomons, Organic Chemistry, J. Wiley and Sons, 6th edition (July 1998), pp. 937-971 for examples of sugar structures that may be used in the protonated compounds of the present invention.
  • W as used in the structures and drawings of the present invention is a purine or pyrimidine, or a modified analogue of a purine or pyrimidine.
  • FIGS. 4 -8 illustrate exemplary substituent groups (W) that may be added to the naturally occurring structure of the sugar group for use in protonated compounds of the present invention.
  • Such compounds (W) include, but are not limited to, modified analogues of purines and pyrimidines that do not form Watson-Crick base pairing with the naturally occurring bases, such as 2-aminoadenosine, theobromine, caffeine, theophylline, and uric acid; structures based on single ring structures such as pyridine, pyrazine, or triazine (FIG. 4):
  • structures based on multi-ring structures such as indole, acridine, indazole, phenoxazine, phenazine, phenothiazine, quinoline, isoquinoline, quinazoline, and pteridine (FIG. 5):
  • FIG. 7 partially oxidized single and multi-ring structures, e.g., caprolactam (FIG. 7):
  • the invention provides methods of inhibiting the growth of microorganisms by contacting the microorganisms with compositions of the invention in which the active agent is a protonated compound. These methods are effective against infections in vivo, and particularly topical infections. This is demonstrated by test data showing the minimum inhibitory concentrations (MIC) and minimum biocidal concentrations (MBC) of compositions against various pathogenic organisms cultured in vitro under standard conditions. These in vitro tests strongly correlate with in vivo activity, as is evidenced by the widespread use of the MIC and MBC determinations to predict utility of antimicrobial compositions in treatment of infection in animals, including humans.
  • MIC minimum inhibitory concentrations
  • MBC minimum biocidal concentrations
  • compositions comprising a protonated compound of the invention to extend the range of antimicrobial effectiveness against bacteria previously considered unreactive towards certain conventional antibiotics.
  • the protonated compounds of the invention may be especially useful in compositions to treat acne.
  • the protonated compounds of the invention as well as having antibacterial activity, have activity as antifangals.
  • the protonated compounds are thus useful as active agents for fungal infections such as tinea pedea and candidasis.
  • the protonated compounds of the invention as well as having antibacterial activity, have activity as antivirals.
  • the protonated compounds are thus useful as active agents for viral infections such as herpes simplex.
  • compositions of the invention may be provided as topical disinfectants for sterilization of surfaces such as countertops, surgical instruments, bandages, and skin; as pharmaceutical compositions, including by way of example creams, lotions, ointments, or solutions for external application to skin and mucosal surfaces, including the cornea, dermal cuts and abrasions, burns, and sites of bacterial or fungal infection; as pharmaceutical compositions, including by way of example creams, lotions, ointments, emulsions, liposome dispersions or formulations, suppositories, or solutions, for administration to internal mucosal surfaces such as the oral cavity or vagina to inhibit the growth of bacteria or fungi, including yeasts; and as pharmaceutical compositions such as creams, gels, or ointments for coating indwelling catheters and similar implants which are susceptible to harboring bacterial or fungal infection.
  • pharmaceutical compositions including by way of example creams, lotions, ointments, or solutions for external application to skin and mucosal surfaces, including
  • the protonated compounds of the invention may be used in conjunction with active agents in products such as lotions, creams, and topical solutions.
  • Other compounds may also be added to have additional moisturizing effects and to improve the consistency of the composition.
  • examples of such compounds include, but are not limited to: cetyl esters wax, stearyl alcohol, cetyl alcohol, glycerin, methyl paraben, propyl paraben, quatemium- 15, humectants, volatile methylsiloxane fluids, and polydiorganosiloxane-polyoxyalkylene. See, e.g., U.S. Pat. Nos. 5,153,230 and 4,421,769, which are both incorporated herein by reference. If it is desirable for the composition to have additional cleaning effects, chemicals such as sodium lauryl sulfate or a metal salt of a carboxylic acid may be added.
  • nonvolatile emollients are useful herein, non-limiting examples of which are listed in McCutcheon's, Vol. 2 Functional Materials, North American Edition, (1992), pp. 137-168, which is incorporated herein by reference in its entirety, and CTFA Cosmetic Ingredient Handbook, Second Edition (1992) which lists Skin-Conditioning Agents at pp. 572-575 and Skin Protectants at p. 580, which is also incorporated herein by reference in its entirety.
  • nonvolatile emollient materials useful herein especially preferred are silicones, hydrocarbons, esters and mixtures thereof.
  • silicone emollients include polyalkylsiloxanes, cyclic polyalkylsiloxanes, and polyalkylarylsiloxanes.
  • Suitable commercially available polyalkylsiloxanes include the polydimethylsiloxanes, which are also known as dimethicones, non-limiting examples of which include the VicasilTM series sold by General Electric Company and the Dow CorningTM 200 series sold by Dow Coming Corporation.
  • Commercially available polyalkylsiloxanes include cyclomethicones (Dow CorningTM 244 fluid), Dow CorningTM 344 fluid, Dow CorningTM 245 fluid and Dow CorningTM 345), etc.
  • a suitable commercially available trimethylsiloxysilicate is sold as a mixture with dimethicone as Dow CorningTM 593 fluid.
  • dimethiconols which are hydroxy terminated dimethyl silicones.
  • Suitable commercially available dimethiconols are typically sold as mixtures with dimethicone or cyclomethicone (e.g., Dow CorningTM 1401, 1402, and 1403 fluids).
  • Hydrocarbons useful herein include straight and branched chain hydrocarbons having from about 10 to about 30 carbon atoms, more preferably from about 12 to about 24 carbon atoms, and most preferably from about 16 to about 22 carbon atoms.
  • Non-limiting examples of these hydrocarbon materials include dodecane, squalane, cholesterol, 5 hydrogenated polyisobutylene, docosane (i.e., a C 22 hydrocarbon), hexadecane, isohexadecane (a commercially available hydrocarbon sold as PermethylTM 101A by Presperse, South Plainsfield, N.J.).
  • hydrocarbon materials useful herein include paraffins and mineral oils such as USP light mineral oil (e.g., KlearolTM available from Witco Corp., Melrose Park, Ill.) and USP heavy mineral oil (e.g., KlearolTM available from Witco Corp., Melrose Park, Ill.).
  • USP light mineral oil e.g., KlearolTM available from Witco Corp., Melrose Park, Ill.
  • USP heavy mineral oil e.g., KlearolTM available from Witco Corp., Melrose Park, Ill.
  • esters including esters of monofunctional and difunctional fatty acids that have been esterified with alcohols and polyols (i.e., alcohols having two or more hydroxy groups).
  • esters are useful herein, with long chain esters of long chain fatty acids being preferred (i.e., C10-40 fatty acids esterified with C10-40 fatty alcohols).
  • esters useful herein include those selected from the group consisting of diisopropyl adipate, isopropyl myristate, isopropyl palmitate, myristyl propionate, ethylene glycol distearate, 2-ethylhexyl palmitate, isodecyl neopentanoate Cl 2 s 15 alcohols benzoate, di-2-ethylhexyl maleate, cetyl palmitate, myristyl myristate, stearyl stearate, cetyl stearate, behenyl behenrate, and mixtures thereof.
  • compositions comprising any of these compounds optionally may be formulated with a lipophilic phase, as in emulsions and liposome dispersions and formulations.
  • an organic solvent or cosolvent such as ethanol or propanol may be employed. Evaporation of the solvent leaves a residue of the antibiotic and protonated compound on the treated surface to inhibit reinfection.
  • compositions may be manufactured according to methods well known in the art. Formulations are given in, for example, Remington's Pharmaceutical Sciences and similar reference works.
  • compositions Containing Protonated Compounds are useful as stabilizing and/or preservative compounds in topical antibiotic compositions, both prescription (e.g., benzomycin creams) and over-the-counter (e.g., anti-acne medications containing salicylic acid, benzoyl peroxide and the like.)
  • an appropriate dosage of a composition containing the protonated compounds of the invention and an active ingredient may be determined by any of several well established methodologies. For instance, animal studies are commonly used to determine the maximal tolerable dose, or MTD, of bioactive agent per kilogram weight. In general, at least one of the animal species tested is mammalian. Those skilled in the art regularly extrapolate doses for efficacy and avoiding toxicity to other species, including human. Additionally, therapeutic dosages may also be altered depending upon factors such as the severity of infection, and the size or species of the host.
  • the compositions are preferably administered in a pharmaceutically acceptable topical carrier.
  • the preferred formulation for a given antimicrobial composition is dependant on the location in a host where a given infectious organism would be expected to initially invade, or where a given infectious organism would be expected to colonize or concentrate.
  • topical infections are preferably treated or prevented by formulations designed for application to specific body surfaces, e.g., skin, mucous membranes, etc.
  • the composition containing the active ingredient and the protonated compound is formulated in a water, ethanol, and propylene glycol base for topical administration.
  • compositions suitable for intranasal administration can be formulated.
  • animal hosts that may be treated using the compositions of the present invention include, but are not limited to, invertebrates, vertebrates, birds, mammals such as pigs, goats, sheep, cows, dogs, cats, and particularly humans.
  • the presently described compositions are also contemplated to be effective in combating bacterial contamination of laboratory cultures, consumables (food or beverage preparations), medical devices, hospital apparatus, or industrial processes.
  • an additional embodiment of the presently described invention is the use of the presently described antimicrobial protonated compounds as prophylactic agents to prevent and/or treat infection in immuno-compromised patients.
  • AIDS acquired immunodeficiency disease syndrome
  • HIV-infected individuals such as patients suffering from acquired immunodeficiency disease syndrome (AIDS), HIV-infected individuals, patients undergoing chemotherapy or radiation therapy, or bone marrow transplantation, etc.
  • an additional embodiment of the presently described invention is the use of the presently described antimicrobial protonated compounds as prophylactic agents to prevent and/or treat infection in immuno-compromised patients.
  • Examples of bacterial organisms against which the methods and compositions of the invention are effective include gram positive bacteria, gram negative bacteria, and acid fast bacteria, and particularly, Staphylococcus aureus, Streptococcus pyogenes, Streptococcus pneumoniae, Mycobacterium and Escherichia coli.
  • the methods and compositions of the invention are effective against infection by all bacterial organisms, including members of the following genera: Aerococcus, Listeria, Streptomyces, Chlamydia, Lactobacillus, Eubacterium, Arachnia, Mycobacterium, Peptostreptococcus, Staphylococcus, Corynebacterium, Erysipelothrix, Dermatophilus, Rhodococcus, Pseudomonas, Streptococcus, Bacillus, Peptococcus, Pneumococcus, Micrococcus, Neisseria, Klebsiella, Kurthia, Nocardia, Serratia, Rothia, Escherichia, Propionibacterium, Actinomyces, Helicobacter, Enterococcus, Shigella, Vibrio, Clostridium, Salmonella, Yersinia, and Haemophilus.
  • Fungal infections that may be treated with the compositions of the present invention include dermatophytosis (Trichophyton, Epidermophyton, and Microsporum), candidiasis ( Candida albicans and other Candida species), tinea versicolor ( Pityrosporum orbiculare ), tinea pedea ( Trichophyton mentagrophytes, Trichophyton rubrum, and Epidermophyton floccosum ), tinea capitis and ringworm ( Trichophyton tonsurans ).
  • dermatophytosis Trichophyton, Epidermophyton, and Microsporum
  • candidiasis Candida albicans and other Candida species
  • tinea versicolor Pityrosporum orbiculare
  • tinea pedea Trichophyton mentagrophytes, Trichophyton rubrum, and Epidermophyton floccosum
  • tinea capitis and ringworm Trichophyton tonsurans
  • Vaginal yeast infections are generally caused by Candida albicans, which, along with a few types of bacteria, are normally present in relatively small numbers in the vaginal area. Sometimes the yeast multiply rapidly and take over, causing candidiasis or monilia. This is often due to a change in the vaginal environment, injury, sexual transmission, HIV infection, etc. Common environmental disruptions that favor yeast include increased pH, increased heat and moisture, allergic reactions, elevated sugar levels, hormonal fluxes, and reductions in the populations of bacteria that are normally present.
  • the protonated compounds can also be used in conjunction with conventional antimicrobial agents in compositions of the invention.
  • the added activity of the active ingredients may provide for a more efficacious composition, and can provide multiple mechanisms by which the microbes are targeted.
  • compositions for the treatment of acne may comprise the protonated compounds of the invention with salicylic acid, benzoyl peroxide, and/or sulfur. These amounts of these compounds in compositions of the invention can be determined by one skilled in the art, the effective amounts are well documented. See, C. Zouboulis (Editor) Sebaceous Glands, Acne and Related Disorders: Basic and Clinical Research, Clinical Entities and Treatment (1998).
  • Such conjunctive therapy using the protonated compounds of the invention can increase the efficacy of compositions without having to increase the amounts of the agents currently available to consumers, e.g., the amount found in over-the-counter products.
  • Such compositions are preferably aqueous, as oil-based compositions may exacerbate the acne condition.
  • the protonated compounds are also useful in general antibiotic creams for external use, e.g., for application to the skin or eye.
  • the protonated compounds can be used as the sole active agent, or may be used in conjunctive therapy with other agents, including but not limited to triclosan, erythromycin, neomycin sulfate and gramicidin, polymixin, gentamicin, clindamycin, and other topical antibiotics.
  • agents including but not limited to triclosan, erythromycin, neomycin sulfate and gramicidin, polymixin, gentamicin, clindamycin, and other topical antibiotics.
  • Yoshihito Honda Editor
  • Topical Application of Antibiotics Recent Advances in Ophthalmology (1998), and the Physicians Desk Reference (1999).
  • OTC antifungal medications that may be additional active ingredients in the compositions of the invention include: Miconazole, Miconazole nitrate, Polynoxylin, Clotrimazole, Sulconazole nitrate, Econazole nitrate, Tolnaftate, Selenium sulphide, Tioconazole
  • Presciptive antifungals include drugs such as allylamines, azoles, polyene macrolides, flucytosine, pseudomycins and griseofulvin.
  • Exemplary antifungals include Amphotericin B, Fluconazole/Difluian, Flucytosine, Foscarnet, Itraconazole/Sporonex, Ketoconazole/Nitoral, and Nystatin 1. See also Elewski, Cutaneous Fungal Infections, 2nd Edition (1998) and Segal, Pathogenic Yeasts and Yeast Infections (1994), which are both incorporated by reference.
  • the topical compositions of the invention contain the protonated compounds as described, and may contain any of a number of additives that are themselves active ingredients, such as a retinoic acid, glycolic acid, lactic acid, ⁇ -hydroxy acids, keto-hydroxy acids, citric acid, glucuronic acid, galacturonic acid, glucuronolactone, gluconolactone, ⁇ -hydroxy-butyric acid, ⁇ -hydroxyisobutyric acid, malic acid, pyruvic acid, ⁇ -phenyllactic acid, ⁇ -phenylpyruvic acid, saccharic acid, mandelic acid, tartaric acid, tartronic acid, ⁇ -hydroxybutyric acid, vitamin A palmitate (retinyl palmitate) and/or vitamin E acetate (tocopheryl acetate). Each of these is preferably present in an amount from about 0.5 wt. % to about 20 wt %.
  • a UV absorbing or blocking material such as PABA, may be
  • compositions in which the compound of the invention is efficacious include those found in U.S. Pat. No. 5,652,266, directed to combination of alpha-hydroxy acid, retinoid and salicylic acid; U.S. Pat No. 5,843,998, directed to a composition containing alpha hydroxy acids and carbamide peroxide, either with or without salicylic acid; U.S. Pat No. 5,153,230, which is directed to a formulation in which the major active ingredient is glycolic acid; U.S. Pat. No. 4,464,392, which is directed to a antimicrobial formulations containing glycolic acid derivatives; and U.S. Pat. No. 4,105,782, which describes numerous other similar active agents that may be used in the composition of the invention.
  • compositions of the invention may include propylene glycol.
  • Propylene glycol acts as a surfactant and assists in penetration, contact, and absorption of the active ingredients. Propylene glycol also serves as a preservative.
  • the compositions of the invention may also include a non-ionic surfactant, such as polysorbate. Such a surfactant provides better surface contact of the composition with the vaginal mucosa by further reducing surface tension.
  • compositions of the invention may also be used as a carrier material for and/or in combination with other medicines, such as spermicidal agents, anti-viral agents and anti-fungal agents, thereby further broadening the compositions medical efficacy.
  • the composition of the present invention may also include a topical anesthetic such as lidocaine hydrochloride and topical steroids, such as corticosteroid, to provide relief from pain or itching during treatment.
  • the protonated compounds of the invention may be used in cosmetic products such as lotions, creams, and topical solutions as an antimicrobial preservative.
  • the protonated compounds retard and/or prevent the growth of numerous species of bacteria in a cosmetic formulation, such as in a lotion, and thus may be used as a preservative to prevent and/or retard growth of bacteria in the cosmetic preparation.
  • the protonated compounds may be used in this capacity with any known cosmetic preparation, provided the composition of the preparation is sufficiently low in pH to retain protonation of the compound, i.e. 7.0 or below.
  • the protonated compounds are present in an amount sufficient to have an antimicrobial effect, and preferably between 0.25 wt % and I0.0 wt %, more preferably between 0.5 wt % and 5.0 wt%.
  • the cosmetic composition of the invention may also contain any of a number of additives that are active ingredients, such as a glycolic or alpha-hydroxy acids, vitamin A palmitate (retinyl palmitate) and/or vitamin E acetate (tocopheryl acetate). Each of these is preferably present in an amount from about 0.5 wt. % to about 5 wt %.
  • a UV absorbing or blocking material such as PABA, may be used.
  • compositions may also be added to have additional moisturizing effects and to improve the consistency of the composition.
  • examples of such compounds include, but are not limited to: cetyl esters wax, stearyl alcohol, cetyl alcohol, glycerin, methyl paraben, propyl paraben, quatemium-15, humectants, volatile methylsiloxane fluids, and polydiorganosiloxane-art polyoxyalkylene. See, e.g., U.S. Pat Nos. 5,153,230 and 4,421,769, which are both incorporated herein by reference. If it is desirable for the composition to have additional cleaning effects, chemicals such as sodium lauryl sulfate or a metal salt of a carboxylic acid may be added.
  • the protonated compounds of the invention may also find use as disinfectants, and particularly as liquid disinfectant preparations having biostatic or preferably biocidal properties.
  • the disinfectant solution contains at least a sufficient amount of protonated compounds of the invention, and may also contain other active ingredients with biostatic and/or biocidal properties.
  • the disinfectant may contain protonated compounds of the invention with a suitable concentration of a quaternary ammonium compound such as: dimethylbenzyldodecylammonium chloride, dimethylbenzyl decylammonium chloride, dimethylbenzyl decylammonium bromide, and dimethylbenzylloctylammonium chloride.
  • suitable microbiocidal biguanidine compounds such as oligohexamethylene biguanide salts and bisbiguanides
  • oligohexamethylene biguanide salts and bisbiguanides can be used. See, e.g., U.S. Pat. No. 5,030,659, which is incorporated herein by reference.
  • Additional biocidal ingredients include aldehydes, phenol derivatives, and halogen phenyl derivatives. See, e.g., U.S. Pat. No. 5,767,054, which is incorporated herein by reference.
  • Other compounds with such activity as will be recognized by those skilled in the art, may also be used in conjunction with the protonated compounds of the invention.
  • the disinfectant preparations of the invention may contain other typical components depending on the desired use of the formulation.
  • an acidifier may be used to keep the pH range of the disinfection solution below 6.
  • Suitable solvents for the protonated compounds and/or the other active ingredients may be employed, and preferably are water or water miscible organic solvents. Solutions such as these may be readily sprayed using compressed air or any other propellants known by those in the art.
  • preparations of the invention are especially suitable for surface disinfection in medically-related environments, such as hospitals, veterinary clinics, dental and medical offices and the like.
  • Use of solutions of the invention in the sterilization of surgical instruments is especially preferred.
  • These preparations are also useful in public areas such as schools, public transport, restaurants, hotels and laundries.
  • the disinfectants also find use in home as sanitizers for toilets, basins, and kitchen areas.
  • the protonated compounds of the invention of the invention may also be used in disinfection solutions for skin.
  • Such compositions contain the protonated compound of the invention in a solution that is in a vehicle suitable for topical use.
  • the disinfectant may be of the quick-drying variety, in which case it is desirable for the protonated compounds to be in an ethanol base.
  • Such solutions preferably contain an emollient for the skin as well, since the alcohol tends to be extremely drying to skin.
  • suitable emollients include, but are not limited to: a polyhydric alcohol such as polyethylene glycol, glycerin, diglycerin, propylene glycol, butylene glycol, erythritol, dipropylene glycol, and sorbitol.
  • the amount of emollient may be in the range of 0.1-3.0 w/w%, and more preferably in the range 0.2-1.5 w/w%. In the case where the content of the emollient is less than 0.1% (by weight) it may not be very effective, and over 3.0%, the solution may be overly sticky.
  • Disinfectant solutions for the skin are especially useful in disinfection of hands following medical treatment or waste management. Disinfection may also be useful in surgical settings, both for the medical staff and to sterilize the area of surgery on the patient.
  • surgical instruments can be coated with the protonated compounds of the invention to provide for a sterile coating prior to surgery.
  • the presently described protonated compounds may be formulated with a variety of active ingredients and a variety of physiological carrier molecules.
  • the presently described antimicrobial active agents may optionally be complexed with molecules that enhance their ability to enter the target cells. Examples of such molecules include, but are not limited to, carbohydrates, polyamines, amino acids, peptides, lipids, and molecules vital to bacterial growth.
  • the active agent may be combined with a lipid, cationic lipid, or anionic lipid (which may be preferred for protonated compounds and/or acidic active agents, e.g., salicylic acid).
  • emulsion or liposomal suspension in conjunction with the pH stabilizing qualities of the compound of the invention can effectively increase the in vivo half-life of the activity of the composition.
  • suitable anionic lipids for use with compositions of the invention include, but are not limited to, cardiolipin, dimyristoyl, dipalmitoyl, or dioleoyl phosphatidyl choline or phosphatidyl glycerol, palmitoyloleoyl phosphatidyl choline or phosphatidyl glycerol, phosphatidic acid, lysophosphatidic acid, phosphatidyl serine, phosphatidyl inositol, and anionic forms of cholesterol.
  • compositions of the invention may be targeted to specific bacterial cell types by the incorporation of suitable targeting agents (i.e., specific antibodies or receptors) into the lipid complex.
  • suitable targeting agents i.e., specific antibodies or receptors
  • compositions containing the compounds of the invention in admixture with an active agent and a pharmaceutical carrier can be prepared according to conventional pharmaceutical compounding techniques.
  • Aerosols e.g. for intranasal or mucosal administration
  • a propellant such as ethyl alcohol or in propellant and solvent phases.
  • the pharmaceutical compositions for topical or aerosol form will generally contain from about 0.01% by weight (of the protonated compounds) to about 40% by weight, preferably about 0.02% to about 10% by weight, and more preferably about 0.05% to about 5% by weight depending on the particular form employed.
  • Suppositories are prepared by mixing the protonated compounds with a lipid vehicle such as theobroma oil, cacao butter, glycerin, gelatin, or polyoxyethylene glycols.
  • a lipid vehicle such as theobroma oil, cacao butter, glycerin, gelatin, or polyoxyethylene glycols.
  • the presently described antimicrobial compositions may be administered to the body by virtually any means used to administer conventional antibiotics and antifungals.
  • a variety of topical delivery systems are well known in the art for delivering bioactive compounds to bacteria in an animal. These systems include, but are not limited to topical creams, solutions, suspensions, emulsions, nasal spray, aerosols for inhalation, and suppository administration.
  • the specific topical delivery system used depends on the location of the bacteria, and it is well within the skill of one in the art to determine the location of the bacteria and to select an appropriate delivery system.
  • Protonated forms of the described compounds can be generated by subjecting the purified, partially purified, or crude compounds, to a low pH (e.g., acidic) environment.
  • Purified or crude compounds were protonated with acid, including phosphoric acid, nitric acid, hydrochloric acid, and acetic acid.
  • Lyophilized or dried-down preparations of compounds to be used in bacterial experiments were dissolved in pyrogen-free, sterile, physiological saline (i.e., 0.85% saline), sterile Sigma water, and filtered through a 0.45 micron Gelman filter (or a sterile 0.2 micron pyrogen-free filter).
  • the compounds When suspended in water or saline, the compounds typically exhibited a pH between 1 and 4.5 depending upon the level of protonation/acidification, which is determined by how much acid is used in the acidification process.
  • the protonated compounds can be used directly, or in a preferred embodiment, processed further to remove any excess acid and salt, e.g., via precipitation, reverse phase chromatography, diafiltration, or gel filtration.
  • the protonated compounds can be concentrated by lyophilization, solvent evaporation, etc.
  • the acidified compounds of the invention When suspended in water or saline, the acidified compounds of the invention typically exhibit a pH of between I and 4.5 depending upon the level of protonation/acidification, which can be determined by how much acid is used in the acidification process.
  • compounds can be protonated by passage over a cation exchange column charged with hydrogen ions.
  • Burn wound infection in mice can be established by subcutaneous or topical administration of the bacteria to the sites of the burn.
  • the ability of such compounds to prevent burn wound infection was studied.
  • Pseudomonas aeruginosa (Strain Utah 4) was initially cultured on the tripticase soya broth, aliquoted and frozen at ⁇ 70° C. Prior to use, aliquots were thawed and diluted serially in sterile PBS just prior to administration into animals. To ensure viability and virulence, aliquots of the bacteria were periodically re-amplified in tripticase soya broth and colonies determined on tripticase soya agar plates.
  • LD 50 values were determined using the method of Reed and Muench (Amer. J. Hyg. (1938) 27:493-497), and were found to be approximately 4 ⁇ 10 8 and 2 ⁇ 10 9 CFUs, respectively, for subcutaneous and topical routes of infection.
  • groups of mice were anesthetized with ketamine/xylazine mixture (50 mg/kg each, given intramuscularly), their backs were then shaved using a clipper, razor and shaving cream.
  • a brass bar (10 ⁇ 10 ⁇ 100 mm) was heated in a boiling water for 15 min.
  • mice The end of the heated bar was then applied on the shaved back of the mice for 45 sec. After a waiting period of 30 min, 50 ⁇ l of the bacterial inoculum (containing approx. 1 ⁇ 10 8-11 CFU of total bacteria) were then applied subcutaneously into the sites of the burn on the animal back. The mice were then allowed to recover, and were monitored daily for symptoms and deaths. Three days later, the mice were shaved and burns were induced as described above. The inoculum containing the same numbers of bacteria was then topically applied (100 ⁇ l) evenly on the sites of the burn, and a custom made “mouse jacket” was then put on the infection site, for at least 2 hrs. These mice were then monitored daily for symptoms and deaths. These lethal dosages of the P.
  • the bacterial inoculum containing approx. 1 ⁇ 10 8-11 CFU of total bacteria
  • aeruginosa strain used were found to change during the course of this study due to possible decreases in bacterial viability and virulence during storage. As a result, these values were regularly re-checked and adjusted.
  • approx. 5 LD 50 of the bacteria were used.
  • the survival pattern of the mice infected with 5 LD 50 of the bacteria administered by these two routes of infection was similar. Both routes of administration resulted in eventual death of all mice in the test groups by day 3 post infection. All control unburned animals that received equivalent doses of bacteria by either subcutaneous or topical administration without the burn were asymptomatic and found to be completely resistant to the infection.
  • the LD 50 of the bacteria administered topically was approximately 5-fold higher than the subcutaneous route. Unless otherwise stated, all treatment studies described were carried out using subcutaneous route of infection. This route of administration was chosen for subsequent studies as it does not require pretreatment of the mice with cyclophosphamide at 3 days prior to infection, and that it causes a more systemic infection.
  • mice treated as described above were provided with Nu-2, Nu-3, Nu-4 and Nu-5 by subcutaneous administration (200 ⁇ l of solution of approximately 12 mg/ml), and their survival was compared to control, untreated mice.
  • the results of this study are shown in Table 1. The results indicate that the compounds of the present invention were effective in attenuating the incidence of infection of burn wounds.
  • TABLE 1 Efficacy Of The Compounds Of The Present Invention In Treating Burn Wound Infection # animals surviving p Value Compound total # tested % Survival (expt vs. control) Nu-2 3/5 60% 0.0184 Nu-3 4/5 80% ⁇ 0.01 Nu-4 5/5 100% ⁇ 0.01 Nu-5 4/5 80% ⁇ 0.01 Control 1/45 2% —
  • mice were subcutaneously infected with 5 LD 50 of P. aeruginosa as described above. Mice were then treated in the following manner. For treatment of systemic infection (infection by subcutaneous injection of the bacteria), mice were treated at 2 and 8 hrs post infection. Three groups of mice were treated with protonated Nu-3. Group 1 received a subcutaneous injection of 100 ⁇ l 35 mg/ml protonated monomer; Group 2 received a subcutaneous injection of 17.5 mg/ml protonated injection; and group three received no monomer. All (5 out of 5) treated Group 1 animals survived, 2/5 animals of group 2 survived, and no control animals survived the burn infection.
  • the bacterial load was determined using the blood and organs of experimental animals. Blood, spleens, livers and the burnt skins were aseptically removed. The blood (100 ⁇ l) was his serially diluted in sterile PBS and 100 ⁇ l of the diluted blood was plated for growth in tripticase soya agar plates. For the organs, they were homogenized in 2 (spleens and skins) or 5 ml (livers) of sterile PBS using hand-held tissue grinder. The tissue homogenates were serially diluted in sterile PBS, and were then plated for growth in TSA, and the inoculated plates were incubated at 37EC overnight. The number of CFUs was then determined.
  • the animals receiving 35 mg/ml dosage had no detectable bacterial load in the spleen, liver or blood. Animals receiving the 17.5 mg/ml dosage had a lower bacterial load than the control, untreated animals by an order of magnitude: 1.6 ⁇ 10 4 versus 9 ⁇ 10 2 in spleen and 1.2 ⁇ 10 4 versus 1.9 ⁇ 10 3 in liver (treated versus untreated).
  • the antimicrobial activity of the compounds of the present invention was further demonstrated by incubating various microorganisms in the presence of Compound Nu-4 of the present invention.
  • a stock solution of Nu-4 (12.7 mM) was diluted using 5 sequential 2-fold dilutions (0.5 ml of test substance in 0.5 ml of 10% Meuller-Hinto broth (“MHB”).
  • MHB Meuller-Hinto broth
  • the antimicrobial activity of the compounds of the present invention was further demonstrated by incubating three yeast organisms in the presence of Compounds Nu-3 and Nu-5 of the present invention.
  • stock solutions of Nu-3 (54 A 260 /ml) and Nu-5 (12.7 mM) were diluted using 5 sequential 2-fold dilutions (30 ⁇ l of test substance in 30 pt of sterile water) for each organism.
  • To each well of a 24 well microtiter plate were added 30 ⁇ l of each compound (dilutions were prepared directly in each well), 20 ⁇ l of 10X yeast cells to give an equivalent of about 10 6 colony forming units (“cfu”)/ml, and 150 ⁇ l of 10% Sabouraud dextrose broth.
  • cfu colony forming units

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Application Number Priority Date Filing Date Title
US09/847,654 US20020032164A1 (en) 1998-12-30 2001-05-03 Antimicrobial compounds and methods for their use
EP10184218.5A EP2311466B1 (fr) 2001-05-03 2002-05-03 Composés antimicrobiens et leurs procédés de mise en oeuvre
CA2445381A CA2445381C (fr) 2001-05-03 2002-05-03 Composes antimicrobiens comprenant du phosphore et procedes d'utilisation associes
EP02734149A EP1389909B1 (fr) 2001-05-03 2002-05-03 Composes antimicrobiens et leurs procedes de mise en oeuvre
ES10184218.5T ES2549766T3 (es) 2001-05-03 2002-05-03 Compuestos antimicrobianos y métodos para su utilización
CA2827671A CA2827671C (fr) 2001-05-03 2002-05-03 Composes antimicrobiens contenant du phosphore et procedes pour leur utilisation
PT101842185T PT2311466E (pt) 2001-05-03 2002-05-03 Compostos antimicrobianos e métodos para a sua utilização
PCT/US2002/013910 WO2002089581A1 (fr) 2001-05-03 2002-05-03 Composes antimicrobiens et leurs procedes de mise en oeuvre
AU2002305336A AU2002305336B2 (en) 2001-05-03 2002-05-03 Antimicrobial compounds and methods for their use
DK10184218.5T DK2311466T3 (en) 2001-05-03 2002-05-03 Antimicrobial compositions and methods for their application
JP2002586732A JP4347573B2 (ja) 2001-05-03 2002-05-03 抗菌組成物、細菌感染症を治療するための方法、及び消毒用組成物
US10/937,094 US7176191B2 (en) 1998-12-30 2004-09-08 Antimicrobial compounds and methods for their use
US11/552,951 US7868162B2 (en) 1998-12-30 2006-10-25 Antimicrobial and antiviral compounds and methods for their use
JP2009120362A JP5503900B2 (ja) 2001-05-03 2009-05-18 抗菌化合物およびそれらの使用方法
US12/985,786 US20110135713A1 (en) 1998-12-30 2011-01-06 Antimicrobial and Antiviral Compounds and Methods for Their Use
JP2013210031A JP5883838B2 (ja) 2001-05-03 2013-10-07 抗菌化合物およびそれらの使用方法
CY20151100909T CY1116784T1 (el) 2001-05-03 2015-10-08 Αντιμικροβιακες ενωσεις και μεθοδοι για χρηση αυτων
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US20080146515A1 (en) * 2006-12-04 2008-06-19 Mitsubishi Tanabe Pharma Corporation Crystalline form of 1-(beta-D-glucopyransoyl)-4-methyl-3-[5-(4-fluorophenyl)-2- thienylmethyl]benzene hemihydrate
US20090233874A1 (en) * 2007-09-10 2009-09-17 Abdel-Magid Ahmed F Process for the preparation of compounds useful as inhibitors of sglt
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US8853385B2 (en) 2008-01-17 2014-10-07 Mitsubishi Tanabe Pharma Corporation Combination therapy comprising SGLT inhibitors and DPP4 inhibitors
US20100099883A1 (en) * 2008-10-17 2010-04-22 Walter Ferdinand Maria Fillers Process for the preparation of compounds useful as inhibitors of sglt
US9056850B2 (en) 2008-10-17 2015-06-16 Janssen Pharmaceutica N.V. Process for the preparation of compounds useful as inhibitors of SGLT
US20110009347A1 (en) * 2009-07-08 2011-01-13 Yin Liang Combination therapy for the treatment of diabetes
US11576894B2 (en) 2009-07-08 2023-02-14 Janssen Pharmaceutica Nv Combination therapy for the treatment of diabetes
US8772512B2 (en) 2009-07-10 2014-07-08 Janssen Pharmaceutica Nv Crystallisation process for 1-(β-D-glucopyranosyl)-4-methyl-3-[5-(4-fluorophenyl)-2-thienylmethyl] benzene
US20110087017A1 (en) * 2009-10-14 2011-04-14 Vittorio Farina Process for the preparation of compounds useful as inhibitors of sglt2
US9174971B2 (en) 2009-10-14 2015-11-03 Janssen Pharmaceutica Nv Process for the preparation of compounds useful as inhibitors of SGLT2
US10617668B2 (en) 2010-05-11 2020-04-14 Janssen Pharmaceutica Nv Pharmaceutical formulations
US10544135B2 (en) 2011-04-13 2020-01-28 Janssen Pharmaceutica Nv Process for the preparation of compounds useful as inhibitors of SGLT2
US9035044B2 (en) 2011-05-09 2015-05-19 Janssen Pharmaceutica Nv L-proline and citric acid co-crystals of (2S, 3R, 4R, 5S,6R)-2-(3-((5-(4-fluorophenyl)thiopen-2-yl)methyl)4-methylphenyl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol
US11207337B2 (en) 2015-09-15 2021-12-28 Janssen Pharmaceutica Nv Co-therapy comprising canagliflozin and phentermine for the treatment of obesity and obesity related disorders
WO2021115503A1 (fr) * 2019-12-12 2021-06-17 Ustav Organicke Chemie A Biochemie Av Cr, V. V. I. Lipophosphonoxines, leur préparation et leur utilisation
AU2020401174B2 (en) * 2019-12-12 2023-08-31 Mikrobiologicky Ustav Av Cr, V. V. I. Lipophosphonoxins, their preparation and use

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PT2311466E (pt) 2015-10-27
US20050107344A1 (en) 2005-05-19
JP2005511482A (ja) 2005-04-28
JP2014055139A (ja) 2014-03-27
ES2549766T3 (es) 2015-11-02
JP2016056177A (ja) 2016-04-21
EP2311466B1 (fr) 2015-07-08
CY1116784T1 (el) 2017-03-15
DK2311466T3 (en) 2015-10-19
EP2311466A3 (fr) 2012-04-25
EP1389909A1 (fr) 2004-02-25
JP6097372B2 (ja) 2017-03-15
US7176191B2 (en) 2007-02-13
CA2827671C (fr) 2016-07-05
EP1389909B1 (fr) 2012-07-18
JP5503900B2 (ja) 2014-05-28
EP1389909A4 (fr) 2005-03-30
JP4347573B2 (ja) 2009-10-21
EP2311466A2 (fr) 2011-04-20
AU2002305336B2 (en) 2007-11-08
CA2445381A1 (fr) 2002-11-14
JP5883838B2 (ja) 2016-03-15
CA2827671A1 (fr) 2002-11-14
CA2445381C (fr) 2013-09-17
JP2009179639A (ja) 2009-08-13
WO2002089581A1 (fr) 2002-11-14

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