baber/WOPTO huggingface dataset:
Patent BR-0308863-A (BR)
Title: Processo para preparar um óleo de base lubrificante
Inventor: MILLER STEPHEN J
IPC: C10G45/64
Filed: 2003-04-02
Abstract: "PROCESSO PARA PREPARAR UM óLEO DE BASE LUBRIFICANTE". Um processo para converter uma mistura de um refugo plástico e uma fração cerosa Fischer-Tropsch em óleos lubrificantes de elevado índice de viscosidade (IV). Uma cera Fischer-Tropsch é separada em uma fração de 537,7<198>C + e uma fração de 537,7<198>C -. A fração de maior ponto de ebulição é combinada com poliolefina virgem ou de refugo e alimentada para uma zona de pirólise após ser aquecida na unidade de aquecimento. O efluente de pirólise é separado em pelo menos uma fração pesada. Qualquer fração leve recuperada pode ser ainda processada em uma alimentação para produtos de gasolina. Qualquer fração de meio recuperada pode ser hidrotratada e ter cera removida para formar diesel, mistura de diesel e combustível de jato, ou pode ser oligomerizada, hidrotratada e ter cera removida, para formar óleo de base lubrificante de elevado índice de viscosidade (IV). A fração pesada é hidrotratada e ter cera removida para dar óleo de base lubrificante de elevado IV. O processo pode ser conduzido em uma base contínua.
Patent BR-0309075-A (BR)
Title: Composição, pasta, métodos para polir e para tratar uma superfìcie e para preparar uma composição polidora de minério de perlita não expandida, dispositivo para direcionar uma composição polidora de minério de perlita não expandida sob uma corrente gasosa contra uma superfìcie de uma peça de trabalho, combinação de uma composição polidora e de um material de carga, e, material de tira para polimento de dentes
Inventor: ROULSTON JOHN S
IPC: A61C3/025
Filed: 2003-04-24
Abstract: "COMPOSIçãO, PASTA, MéTODOS PARA POLIR E PARA TRATAR UMA SUPERFìCIE E PARA PREPARAR UMA COMPOSIçãO POLIDORA DE MINéRIO DE PERLITA NãO EXPANDIDA, DISPOSITIVO PARA DIRECIONAR UMA COMPOSIçãO POLIDORA DE MINéRIO DE PERLITA NãO EXPANDIDA SOB UMA CORRENTE GASOSA CONTRA UMA SUPERFìCIE DE UMA PEçA DE TRABALHO, COMBINAçãO DE UMA COMPOSIçãO POLIDORA E DE UM MATERIAL DE CARGA, E, MATERIAL DE TIRA PARA POLIMENTO DE DENTES". é mostrada uma composição polidora de minério de perlita não expandida. A composição compreende material base possuindo grãos de minério de perlita não expandida de uma distribuição selecionada de tamanhos de partícula que sofre fraturamento dos grãos como uma função da força não abrasiva aplicada no material base. A distribuição selecionada de tamanhos de partícula inclui um volume significativo de grãos de minério de perlita não expandida possuindo um tamanho de partícula médio (d~ 90~) dentro de uma faixa de cerca de 101 gm a cerca de 229 <109>m. O material base é responsivo a uma força abrasiva sendo aplicada no mesmo durante o polimento resultando em fraturamento continuado dos grãos de minério de perlita não expandida para dar uma composição polidora final possuindo um nível suficientemente baixo de abrasividade sob a citada força abrasiva tornando-a adequada para uso em polimento. Também são mostradas composições para polimento de dentaduras acrílicas e de superfícies de tubo CRT usando a composição polidora de minério de perlita não expandida e métodos para polimento das mesmas.
Patent BR-0309104-A (BR)
Title: Aparelho e método de moldagem por injeção de metal, e, produto metálico moldado por injeção
Inventor: KONO KANAME
IPC: B22D17/02
Filed: 2003-04-25
Abstract: "APARELHO E MéTODO DE MOLDAGEM POR INJEçãO DE METAL, E, PRODUTO METáLICO MOLDADO POR INJEçãO". Um aparelho de moldagem por injeção contém duas câmaras e um alimentador do material fundido. O alimentador do material fundido é montado na base da máquina. O metal líquido no alimentador do material fundido é mantido abaixo do nível de uma abertura para um mecanismo de acionamento anexo a uma parte superior das duas câmaras.
Patent BR-0309605-A (BR)
Title: Preparação de compostos de cobre (i) de nano tamanho
Inventor: LEWIS KENRICK M
IPC: C01G3/04
Filed: 2003-04-15
Abstract: "PREPARAçãO DE COMPOSTOS DE COBRE (1) DE NANO TAMANHO". é aqui descrito um método para produzir compostos de cobre (I) de nano tamanho, em particular, haletos de cobre (I), pseudo haletos e complexos cianocupratos, em micelas reversas ou micro emulsões. O método da invenção compreende: (a) dissolver um composto de cobre (II) na fase polar de uma primeira micela reversa ou micro emulsão, (b) dissolver um agente de redução de cobre (II) a cobre (I) ou um sal de pseudo haleto na fase polar de uma segunda amostra da mesma micela reversa ou micro emulsão, (c) misturar as duas amostras de micelas reversas / micro emulsões para formar compostos de cobre (I) do tamanho de nanómetros, e (d) recuperar ditos compostos de cobre (1) do tamanho de nanómetros. A presente invenção é também direcionada aos resultantes compostos de cobre (1) de nano tamanho, tais como cloreto de cobre (I), cianeto de cobre (I) e complexos cianocupratos de potássio apresentando um tamanho médio de partículas de cerca de 0,1 a 600 nanómetros.
Patent BR-0314726-A (BR)
Inventor: DEGOTT PIERRE
IPC: B41M3/14
Filed: 2003-09-05
Abstract: Printing ink comprises at least one dye or pigment with at least one absorption maximum in visible range of electromagnetic spectrum different from absorption maxima of base colors of Commission Internale d'Eclairge with visible color coordinates of red, green and blue system and/or having absorption band in visible range whose band width at half intensity is narrower than 2400, preferably narrower than 1500 cm ->1. Printing ink, comprises at least one dye or pigment having at least one absorption maximum in the visible range of the electromagnetic spectrum that is substantially different from the absorption maxima of the base colors of the Commission Internale d'Eclairge with three basic visible color coordinates of red, green and blue (CIEXYZ) system and/or having an absorption band in the visible range of the electromagnetic spectrum whose band width at half intensity is narrower than 2400 cm ->1, preferably narrower than 1500 cm ->1. Independent claims are also included for: (a) a set of printing inks, comprising >=2 printing inks as above; (b) a method for marking an article, such as a banknote, a document, a ticket, a foil, a thread, a label, a card, or a commercial good, comprising providing on the article a marking that is applied using printing ink(s) above or a set of printing inks above using coating composition(s) comprising printing ink(s) above or a set of printing inks above; (c) a method of authenticating an article, such as a banknote, a document, a ticket, a foil, a thread, a label, a card, or a commercial good, comprising measuring an absorbance, reflectance or transmittance spectrum of an article marked using the method above, in the ultraviolet, visible and/or infrared wavelength domain of the electromagnetic spectrum; and comparing the spectrum measured and/or information derived from it with a corresponding spectrum of an authentic item and/or information derived from it; (d) a marking, comprising printing ink(s) above and/or set(s) of printing inks above; (e) an article, such as a banknote, a document, a ticket, a foil, a thread, a label, a card, or a commercial good, comprising marking above; (f) use of a dye or pigment having at least one absorption maximum in the visible range of the electromagnetic spectrum that is substantially different from the absorption maxima of the base colors of the CIEXYZ system and/or having an absorption band in the visible range of the electromagnetic spectrum whose band width at half intensity is narrower than 2400 cm ->1, preferably narrower than 1500 cm ->1, for marking and/or authenticating an article, such as a banknote, a document, a ticket, a foil, a thread, a label, a card, or a commercial good; (g) use of a printing ink or a set of printing inks above for marking and/or authenticating an article, such as a banknote, a document, a ticket, a foil, a thread, a label, a card, or a commercial good; and (h) use of a marking as above for authenticating an article, such as a banknote, a document, a ticket, a foil, a thread, a label, a card, or a commercial good.
Patent BR-0317757-A (BR)
Title: Composto, composição, métodos para tratar ou prevenir dor, incontinência urinária, uma úlcera, sìndrome, do intestino irritável, doença inflamatória do intestino, um distúrbio de adicto, doença de parkinson, parkinsonismo, ansiedade, epilepsia, acidente vascular cerebral, um ataque epilético, uma condição prurìtica, psicose, um distúrbio cognitivo, um déficit de memória, função cerebral restringida, coréia de huntington, esclerose lateral amiotrófica, retinopatia, um espasmo muscular, uma enxaqueca, vÈmito, discinesia e depressão em um animal, para inibir função vr1, mglur5 e mglur1 em uma célula, kit, e, método para preparar uma composição
Inventor: SUN QUN
IPC: C07D403/12
Filed: 2003-12-22
Abstract: "COMPOSTO, COMPOSIçãO, MéTODOS PARA TRATAR OU PREVENIR DOR, INCONTINêNCIA URINáRIA, UMA úLCERA, SìNDROME DO INTESTINO IRRITáVEL, DOENçA IMFLAMATóRIA DO INTESTINO, UM DISTúRBIO DE ADICTO, DOENçA DE PARKINSON, PARKINSONISMO, ANSIEDADE, EPILEPSIA, ACIDENTE VASCULAR CEREBRAL, UM ATAQUE EPILéPTICO, UMA CONDIçãO PRURìTICA, PSICOSE, UM DISTúRBIO COGNITIVO, UM DéFICIT DE MEMóRIA, FUNçãO CEREBRAL RESTRINGIDA, CORéIA DE HUNTINGTON, ESCLEROSE LATERAL AMIOTRóFICA, RETINOPATIA, UM ESPASMO MUSCULAR, UMA ENXAQUECA, VÈMITO, DISCINESIA E DEPRESSãO EM UM ANIMAL, PARA INIBIR FUNçãO VR1, mGLuR5 E mGLuR1 EM UMA CéLULA, KIT, E, MéTODO PARA PREPARAR UMA COMPOSIçãO". São descritos um composto de fórmula (I) na qual Ar~ 1~, A, R~ 3~, x, e m são como aqui descritos e Ar~ 2~ é um grupo benzotiazolila, benzooxazolila, ou benzimidazolila ou um seu sal farmaceuticamente aceitável (um Composto de Benzoazolil-piperazina), composição compreendendo um Composto de Benzoazolil-piperazina, e métodos para tratar ou prevenir dor, UI, e úlcera, IBD, IBS, um distúrbio de adicto, mal de Parkinson, parkinsonismo, ansiedade, epilepsia, acidente vascular cerebral, um ataque epiléptico, uma condição prurítica, psicose, um distúrbio cognitivo, um déficit de memória, função cerebral restrita, coréia de Huntington, esclerose lateral amiotrófica, demência, retinopatia, uma espasmo muscular, uma enxaqueca, vómito, discinesia, ou depressão em um animal compreendendo administrar a um animal em necessidade da mesma de uma quantidade eficaz de Composto de Benzoazolil-piperazina.
Patent BR-7904718-A (BR)
Inventor: HANSEN H
IPC: A01N43/56
Filed: 1979-07-24
Abstract: 1. A herbicidal agent for the selective control of unwanted plant growth in Indian corn, characterized in that it contains a substituted acetanilide of the formula I  see diagramm : EP0009091,P5,F1  where R denotes methyl or ethyl, R**1 denotes methyl or ethyl, and A denotes a pyrazole radical which may be substituted by methyl groups in the 3- and 5-positions and which is attached via a ring nitrogen atom, as herbicidal active ingredient and N-dichloroacetyl-2,2-dimethyl-1,3-oxazolidine as antagonistic agent.
Patent BR-8001535-A (BR)
Inventor: PAVAN C
IPC: A01N53/00
Filed: 1980-03-14
Abstract: Novel synergistic insecticidal compositions comprising as the active ingredient an insecticidally effective amount of a synergistic mixture of 90 to 60% by weight of (S) 1-oxo-2-allyl-3-methyl-cyclopent-2-en-4-yl d trans chrysanthemate and 10 to 40% by weight of (R) 1-oxo-2-allyl-3-methyl-cyclopent-2-en-4-yl d trans chrysanthemate and to a novel method of combatting arthropodes.
Patent BR-8002787-A (BR)
Inventor: KAINMULLER T
IPC: C08F8/22
Filed: 1980-05-06
Abstract: 1. A process for the manufacture of brominated products of polystyrene, said products containing at least 50% by weight of bromine, by direct bromination of polystyrene obtained by radically initiated polymerisation, in solution and in the presence of a Lewis acid catalyst at low temperature, which process comprises carrying out the bromination in a partially halogenated hydrocarbon as solvent, in the presence of a divalent and/or trivalent iron salt or oxide as catalyst, in the temperature range from -30 degrees C to +30 degrees C.
Patent BR-8007008-A (BR)
Inventor: LEHMANN R
IPC: C22B60/02
Filed: 1980-10-30
Abstract: The invention concerns a method for the liquid/liquid extraction of uranium from phosphoric acid with the aid of alkylamine polyphosphate and/or alkylamine metaphosphate compounds, dissolved in organic solvents insoluble in water. The uraniferous phosphoric acid is brought into contact with an organic phase compound of a long-chain alkylamine polyphosphate and/or alkylamine metaphosphate compound and an organic solvent, the alkylamine in the alkyl residue containing 8 to 30, preferably 8 to 18 C-atoms corresponding to the formula <IMAGE>   wherein R1 and R2 denote hydrogen or alkyl radicals and R3 denotes an alkyl radical, the polyphosphate and/or metaphosphate residue having 2 to 10,000 P-atoms per molecule and being of the straight-chain and/or linked-chain or cyclic chain type. The uranium is transferred from the aqueous into the organic phase from which the uranium is re-extracted in the known way.
Patent BR-8007540-A (BR)
Inventor: STAHL W
IPC: B01D33/00
Filed: 1980-11-19
Abstract: 1. A filtering apparatus having a filtering device operating under gage pressure and vacuum, comprising a layer of filtering material e.g. a filter cloth for extracting solid particles from liquids, characterized in that the filtering device is a vacuum-filtering device (10, 20, 40), and in that the whole vacuum-filtering device (10, 20, 40) including the bearings, the driving system, the controls and the like is placed in a gage pressure space (11) to which the operators have access, which is under gage pressure and which is shut off from the outside atmosphere.
Patent BR-8205379-A (BR)
Inventor: PAWSON DAVID
IPC: C11D3/06
Filed: 1982-09-14
Abstract: A detergent composition with a reduced phosphate content is provided, without its incrustation behaviour being significantly impaired, by using a builder mixture of an orthophosphate and nitrilotriacetate.
Patent BR-8706111-A (BR)
Inventor: FOURQUIER DOMINIQUE
IPC: C08J3/24
Filed: 1987-11-12
Abstract: Process for crosslinking self-crosslinkable copolymers based on (meth)acrylic monomers, essentially characterised in that on or before the deposition of a layer containing at least one crosslinking catalyst, a second layer is applied, containing at least one self- crosslinkable copolymer in suspension or in solution in an aqueous medium or in an organic solvent, and in that these two layers are subjected to a heat treatment so as to produce the crosslinking of the layer containing the copolymer. 
<??>Application in the preparation of moulded articles, impregnation, coating, printing, adhesives, binders, finishers, paints and varnishes.
Patent BR-8807554-A (BR)
Inventor: BARNUM CHRISTOPHER SCOTT
IPC: C07D249/08
Filed: 1988-06-13
Abstract: Symmetric 4H-1,2,4-triazoles are isomerized to the corresponding 1H-1,2,4-triazoles in the presence of an isomerizing agent consisting of an organic halide or epoxide. This process represents a useful method for the recovery of antifungal, antimycotic or microbicidal 1H-1,2,4-triazoles by the isomerization of the unwanted 4H-1,2,4-triazole by-product formed during their preparation.
Patent BR-9007437-A (BR)
Inventor: RIESOP JOERG
IPC: C23C22/36
Filed: 1990-06-12
Abstract: PCT No. PCT/EP90/00919 Sec. 371 Date Dec. 16, 1991 Sec. 102(e) Date Dec. 16, 1991 PCT Filed Jun. 12, 1990 PCT Pub. No. WO90/15889 PCT Pub. Date Dec. 27, 1990.Magnesium on steel, zinc, aluminum and/or the alloys thereof by spraying, spray-immersion and/or immersion with an aqueous solution.
Patent BR-9203045-A (BR)
Inventor: AUDUREAU JOEL
IPC: C08F255/02
Filed: 1992-08-06
Abstract: (I) Ethylene (co)polymerisation is conducted in at least one reaction zone (R) at high pressure, at 150-320 DEG C; (II) The reaction product is routed into a zone (S) at an intermediate pressure P, for separating the molten (co)polymer from the unreacted (co)monomer(s), or the reacted product of the reaction is routed into a 1st zone, or the reaction product is routed into a 1st separating zone (S1) at an intermediate pressure P1; the (co)polymer originating from (S1) is then routed into a 2nd separating zone (S2), at a pressure P2 < P1; (III) the (co)polymer is routed into a zone (SF) at low pressure, for final separation of the (co)polymer from the residual gases. Decompression zones (D), (D1) and (D2) are arranged on the route of the (co)polymer between the zones (S) and (SF), (S1) and (S2), and (S2) and (SF) respectively, grafting monomer(s) being introduced into the line, onto the route of the (co)polymer, at at least one point situated at the zone (D) or at at least one zone (D1, D2). A grafting initiator may be introduced into the line at the same time as the stream of grafting monomer(s), or separately. <IMAGE>
Patent BR-9204330-A (BR)
Inventor: CHEONG CATHERINE L
IPC: A61L15/22
Filed: 1992-11-06
Abstract: A wound dressing has a wound-contact layer formed from a polyurethane foam. The foam comprises one part by weight of the reaction product of an isocyanate-capped prepolymer with water (and optionally other hydroxy-functional compounds), and from 0.03 to 0.3 parts by weight of a natural or synthetic rubber. The isocyanate-capped prepolymer is preferably an isocyanate-capped ethyleneoxy/propyleneoxy copolymer, and the rubber is preferably an acrylic rubber.
Patent BR-9301445-A (BR)
Inventor: WATSON RICHARD WILLIAM
IPC: C01B17/04
Filed: 1993-04-05
Abstract: A part of the hydrogen sulphide content of a feed gas stream comprising hydrogen sulphide is burned by a burner 2 that fires into a furnace 4. The combustion is supported by a stream of oxygen or oxygen-enriched air. Resulting sulphur dioxide reacts with residual hydrogen sulphide in the furnace 5 to form sulphur vapour. Sulphur is condensed out of the resulting gas mixture in condenser 10. At least part of the sulphur-free gas mixture flows through a reactor 14 in which its sulphur dioxide content is reduced to hydrogen sulphide. Water vapour is removed from the resulting gas stream in a condenser 16. At least part of the gas stream now essentially free of water vapour is recycled to the furnace 4. A purge stream is taken either from immediately downstream of the sulphur condenser 10 (as shown in Figure 1) or from intermediate the water condenser 16 and the furnace 4, or from the furnace 4 and, if desired, subjected to further treatment to remove sulphur-containing gases therefrom. <IMAGE>
Patent BR-9307447-A (BR)
Inventor: CARTWRIGHT SIMON
IPC: C01B33/193
Filed: 1993-11-03
Abstract: PCT No. PCT/EP93/03093 Sec. 371 Date Jun. 15, 1995 Sec. 102(e) Date Jun. 15, 1995 PCT Filed Nov. 3, 1993 PCT Pub. No. WO94/11302 PCT Pub. Date May 26, 1994An amorphous silica has a pore size distribution wherein 90% of the pores have a diameter above 15 nanometers, and less than 20% of the pore volume is in pores having a pore diameter between 10 and 20 nanometers, the amorphous silica having a CTAB surface area of less than 100 m2/g, the amorphous silica having a matting efficiency of below 20 gloss units at an incidence angle of 60 DEG  and a loading of 5% by weight. It can be prepared by a precipitation route. It is used in thixotropic paints and lacquers.
Patent BR-9400146-A (BR)
Inventor: RUKOVENA FRANK
IPC: F28F25/08
Filed: 1994-01-19
Abstract: Described are packing elements formed of a metal strip 1 having improved resistance to crushing even though made from thinner gauge metal than conventional elements. They can be obtained by providing attachment means that hold the ends of the ring together and resist deformation. The attachment means comprises at least one cooperating tab 2 and slot 4 pair. <IMAGE>
Patent BR-9407811-A (BR)
Inventor: GREENHALGH GEOFFREY
IPC: H05B6/62
Filed: 1994-10-11
Abstract: The invention relates to edge encapsulation of a glazing panel (20), e.g. for a vehicle. To allow satisfactory setting of a thin section (23), e.g. a lip, of an encapsulation (22) by radio frequency dielectric heating in a low cost, non-metallic mould operated at low injection pressures, the invention provides a mould (36) comprising a mould body composed of dielectric material shaped to receive the glazing panel (20), the mould body defining an elongate cavity (73) for receiving a liquid encapsulating material, which, in use, surrounds an edge portion of the glazing panel (20), characterised in that an electrically polarizable field shaping element (75) is provided within the mould body.
Patent BR-9500885-A (BR)
Inventor: TRICAUD CAROLINE
IPC: A61K8/86
Filed: 1995-02-24
Abstract: The invention relates to novel pulverulent cosmetic compositions for bleaching hair, containing at least one oxidizing agent selected from peroxidized compounds, and at least one polymer selected from polyethylene glycol, polypropylene glycol, a derivative of polyethylene glycol, and a derivative of polypropylene glycol, where the polymer is present in an amount of 10 to 27% by weight, the polymer is anhydrous and, at room temperature, both liquid and water-soluble. The invention also relates to a process for the preparation of such compositions and to their use for bleaching hair.
Patent BR-9506991-A (BR)
Inventor: RINK HEINZ-PETER
IPC: C08F220/18
Filed: 1995-02-28
Abstract: PCT No. PCT/EP95/00732 Sec. 371 Date Sep. 3, 1996 Sec. 102(e) Date Sep. 3, 1996 PCT Filed Feb. 28, 1995 PCT Pub. No. WO95/23832 PCT Pub. Date Sep. 8, 1995Coating composition comprising (A) at least one hydroxyl group-containing polyacrylate resin obtained by polymerizing (a) from 5 to 80% by weight of a cycloaliphatic ester of methacrylic acid and/or acrylic acid, or a mixture of such monomers, (b) from 10 to 50% by weight of a hydroxyl group-containing alkyl ester of methacrylic acid and/or acrylic acid, or mixtures of such monomers, (c) from 0 to 25% by weight of a hydroxyl group-containing, ethylenically unsaturated monomer, different from (a) and (b), or a mixture of such monomers, (d) from 5 to 80% by weight of an aliphatic ester of methacrylic and/or acrylic acid, different from (a)-(c), or a mixture of such monomers, (e) from 0 to 40% by weight of an aromatic vinyl hydrocarbon, different from (a)-(d), or a mixture of such monomers, and (f) from 0 to 40% by weight of an additional ethylenically unsaturated monomer, different from (a)-(e), or a mixture of such monomers, and (B) at least one crosslinking agent.
Patent BR-9507850-A (BR)
Inventor: COUTURE PIERRI
IPC: H02K3/48
Filed: 1995-05-12
Abstract: The conductor section is for a stator frame of a polyphase dynamoelectric machine. The stator frame is provided with a series of elongated parallel slots for receiving respectively conductor sections. The conductor section comprises two parallel conductor sides of substantially rectangular cross section adapted to fit respectively into two corresponding parallel slots of the stator frame, the two sides defining a plane; and at least one conductor head of substantially rectangular cross section, connecting two adjacent ends of the parallel sides. The head shows a substantially U-shaped body when seen from a top view perpendicular to the plane, and a waved-shape body when seen from a front view contained in the plane. The head having top and bottom surfaces facing only one side of the plane from one end of the head to the other end thereof. Methods for mounting conductor sections of stator winding onto a circular shaped stator frame are also described.
Patent BR-9508384-A (BR)
Inventor: HALLENBACH WERNER
IPC: C07D498/06
Filed: 1995-06-28
Abstract: PCT No. PCT/EP95/02510 Sec. 371 Date Jan. 3, 1997 Sec. 102(e) Date Jan. 3, 1997 PCT Filed Jun. 28, 1995 PCT Pub. No. WO96/01829 PCT Pub. Date Jan. 25, 1996Disclosed are pyrido[3,2,1-i,j][3,1]benzoxazine compounds of the formula (I):    <IMAGE>  (I)  wherein z represents a radical having the formula:, -O- or a direct bond; and the other variables in formula (I) and Z are as described herein. The compounds have antibacterial properties and also disclosed are antibacterial compositions containing them and methods of using them to prevent or combat bacterial infections. Methods for preparing the compounds are also disclosed.