WO2008154818A1 - Thiazolyl-dihydropyrimidines à substitution fluorophényle - Google Patents
Thiazolyl-dihydropyrimidines à substitution fluorophényle Download PDFInfo
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- WO2008154818A1 WO2008154818A1 PCT/CN2008/001188 CN2008001188W WO2008154818A1 WO 2008154818 A1 WO2008154818 A1 WO 2008154818A1 CN 2008001188 W CN2008001188 W CN 2008001188W WO 2008154818 A1 WO2008154818 A1 WO 2008154818A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
- C07D417/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
Definitions
- the present invention relates to a novel fluorophenyl-substituted thiazolyl dihydropyrimidine, a process for its preparation and its use as a medicament, especially for the treatment and prevention of hepatitis B virus infection.
- the invention also relates to compositions of these dihydropyrimidines with other antiviral agents, and, where appropriate, immunomodulatory agents, and medicaments containing such compositions, particularly for the treatment and prevention of HBV infections, such as hepatitis B. Background technique
- Hepatitis B virus belongs to the family of hepatic viruses. It can cause acute and/or persistent/progressive chronic conditions. Hepatitis B virus also causes many other clinical characterizations in pathological morphology - especially chronic inflammation of the liver, cirrhosis of the liver and carcinogenesis of hepatocytes. In addition, co-infection with hepatitis D can have an adverse effect in the development of the disease.
- No. 7,074,784 discloses 6-aminoalkyldihydropyrimidines and their use as medicaments, especially for the treatment and prevention of hepatitis B virus infection.
- the present invention relates to a compound of the formula (I)
- R 1 is o-chloro
- R 2 is p-fluoro
- R 3 is C alkyl
- R 6 is thiazol-2-yl
- X is methylene
- Z is morpholinyl.
- R 1 is o-chloro
- R 2 is p-fluoro
- R 3 is methyl or ethyl
- R 6 is thiazol-2-yl
- X is methylene
- Z is morpholinyl.
- the invention also relates to enantiomers of the above compounds and to their respective mixtures.
- the racemic form can be separated by known means, which is essentially a homogeneous component of the stereoisomer.
- the compounds of the invention comprise isomers of formula (I) and (la) and mixtures thereof.
- the compounds of the invention may also exist in the form of a salt. Physiologically acceptable salts are preferred according to the framework of the invention.
- the physiologically acceptable salt may be a mineral acid salt or an organic acid salt.
- the physiologically acceptable salt can also be a metal or ammonium salt of a compound of the invention.
- Particularly preferred examples are sodium, potassium, magnesium, or calcium salts, and from ammonia or organic amines such as ethylamine, di- or triethylamine, di- or triethanolamine, dicyclohexylamine, dimethylaminoethanol, An ammonium salt formed by arginine, lysine, ethylenediamine, or 2-phenylethylamine.
- ammonia or organic amines such as ethylamine, di- or triethylamine, di- or triethanolamine, dicyclohexylamine, dimethylaminoethanol, An ammonium salt formed by arginine, lysine, ethylenediamine, or 2-phenylethylamine.
- the compound (I) of the present invention can be produced by the following method:
- R 6 has the meaning as defined above, or a salt thereof (for example, a hydrochloride or an acetate) is added or not added with a base or an acid, is suitable for being present in an inert organic solvent, or is reacted or
- a compound of the formula (III) is added to the aldehyde (II) and hydrazine (V) or a salt thereof (such as a hydrochloride or acetate s) with or without a base or an acid, so as to be suitable for the presence of In a inert organic solvent, carry out a one-step reaction; or
- RR 2 , R 3 and R 6 have the same meanings as defined above, and Y is a nucleophilic substituent such as chloride, bromide, iodide, methanesulfonyl or tosyl, and morpholine (VII), (VII)
- the compound (VI) can be produced, for example, by using the compound of the formula (VIII)
- RR 2 , R 3 and R 6 have the same meanings as described above, and a brominating agent such as N-bromoimide is preferably reacted in an inert solution to give a formula (IX).
- R 3 , X and Z have the same meanings as defined above, and the oxime represented by the formula (V), with or without the addition of a base, is suitably present in an inert solvent. . , carry out the reaction.
- R 3 has the same meaning as described above and is obtained by reacting with morpholine (VII).
- ⁇ -ketocarboxylate ( ⁇ ) used as a starting material is well known or can be analogized from known methods published in the literature [eg, D. Borrmann, "Um GmbH von Diketen mit mecanicen, Phenolen und Mercaptanen", in “Methoden der organischen Chemie” ( Houben-Weyl ), vol. VII/4, 230 f ( 1968 ); Y. Oikawa, K. Sugano und O, Yonemitsu, J. Org. Chem. 43 , 2087 ( 1978 )].
- Compound (V) is known and can be prepared as described in WO-A-99/54326 and WO-A-99/54329.
- Morpholine (VII) is commercially available.
- Suitable solvents for all steps A, B, C and D are all inert organic solvents. Preferred among them are alcohols such as methanol, ethanol, isopropanol, ethers such as dioxane, diethyl ether, tetrahydrofuran, ethylene glycol monomethyl ether, ethylene glycol dimethyl ether, carboxylic acids such as glacial acetic acid, or dimethyl. Formamide, dimethyl sulfoxide, acetonitrile, pyridine and hexamethylphosphoric triamide.
- the reaction temperature can be varied within a relatively wide range. Usually to a temperature between 150 0 C 20, but preferably at the boiling temperature of the selected solvent.
- the reaction can be carried out under atmospheric pressure or under high pressure. It is usually carried out under atmospheric pressure.
- the reaction can be carried out in the presence or absence of an acid or a base; however, it is preferred to carry out the reaction in the presence of a weak acid such as acetic acid or formic acid.
- a composition comprising: A) at least one of the above-described dihydropyrimidines, B) at least one other antiviral agent different from A).
- a detailed embodiment of the invention relates to a composition
- a composition comprising: A) the above-described dihydropyrimidine, B) HBV polymerase inhibitor and, and, where appropriate, C) an immunomodulatory agent.
- Preferred immunomodulators C) include, for example, all interferons such as ct-, ⁇ - and ⁇ -interferons, especially a-2a- and a-2b-interferons, interleukins such as interleukin-2 Polypeptides such as thymosin- ⁇ -l and thymoctonan, imidazoquinoline derivatives such as 8 levamisole, immunoglobulins and therapeutic vaccines. .
- the present invention also relates to such compositions for the treatment and prevention of HBV infection and their use in the treatment of diseases caused by HBV. .
- compositions of the invention for treatment with respect to a single treatment of a single compound
- the disease caused by HBV is beneficial, mainly for enhanced antiviral activity, and the composition of the present invention is well tolerated with respect to the single component of Tox-50 (a range of toxicity with 50% cell survival). .
- the HBV polymerase inhibitor ⁇ used to achieve the object of the present invention is Ph. A. Furman et al., Antimicrobial Agents and Chemotherapy Vol. 36 (No. 12 ), 2688 (1992) Those materials revealed in endogenous polymerase experiments, as well as those described below, inhibit the formation of HBV DNA double strands, resulting in a maximum of 50% of the activity values of zero.
- HBV virions were transferred from the culture suspension to the positive strand of HBV DNA together with the nucleoside 5'-triphosphate.
- agarose gel electrophoresis a binding product of 3.2 kb DNA in which [ot- 32 P]-deoxynucleoside 5'-triphosphate and virus were present was found, and there was no potential HBV polymerase-inhibiting property. substance.
- From the cell culture suspension of HepG2.2.15 cells it was precipitated with polyethylene glycol and concentrated to obtain HBV virions.
- One part by volume of the clarified cell culture suspension was mixed with 1/4 part by volume of an aqueous solution containing 50% by weight of polyethylene glycol 8000 and 0.6 M of sodium chloride.
- the pellet was centrifuged at 2500 xg for 15 minutes, and the precipitate was resuspended in 21111 buffer containing 0.05] ⁇ 1 ⁇ -11(:1] ⁇ 117.5). The solution was dialyzed against this buffer containing 100 mM potassium chloride. The sample was frozen at -80 °C.
- Each reaction mixture (100 ⁇ ) contains at least 10 5 HBV virions, 50 mM tris-HCl (p.sub.H 7.5), 300 mM potassium chloride, 50 mM magnesium chloride, 0.1%® Nonident P-40 (non- Ionic detergent, Boehringer Mannheim), 10 ⁇ dATP, 10 ⁇ dGTP, 10 ⁇ dTTP; 10 /Ci [ 32 P]dCTP (3000 Ci/mmol; final concentration 33 nM) and 1 ⁇ triphosphate form of polymerase potential Inhibitor.
- the samples were incubated at 37 ° C for one hour and then stopped by the addition of 50 mM EDTA.
- L-FMAU 1-(2-deoxy-2-fluoro-.beta.-L-arabinofuranosyl)-5-methyl-pyrimidine e--2.4 (1H, 3H)-dione, cf. WO 99/05157, WO 99/05158 and US Pat. No. 5, 753, 789
- a further preferred embodiment of the invention relates to a composition
- a composition comprising A) the above-mentioned dihydropyrimidines (I) and (la) and B) lamivudine.
- Another preferred HBV antiviral agent B contains, for example, a phenylacrylamide represented by the following formula
- R 1 and R 2 are each independently, C r C 4 -fluorenyl or, with a nitrogen atom at their position, forming a ring having 5 to 6 atoms containing carbon and/or oxygen.
- R 3 to R 12 are each independently hydrogen, halogen, C r C 4 -alkyl, optionally substituted C r C 4 -alkoxy, nitro, cyano or trifluoromethyl.
- R 13 is hydrogen, C r C 4 -alkyl, CC 7 -acyl or aryl fluorenyl, and X is halogen or optionally substituted C r C 4 -fluorenyl, and salts thereof.
- Preferred immunomodulators C) include, for example, all interfering agents such as ex-, beta- and gamma-interferons, especially a-2a- and a-2b-interfering, interleukins such as interleukin-2 Polypeptides such as thymosin and thymoctonan, imidazoquinoline derivatives such as 8 levamisole, immunoglobulins and therapeutic vaccines.
- interfering agents such as ex-, beta- and gamma-interferons, especially a-2a- and a-2b-interfering, interleukins such as interleukin-2 Polypeptides such as thymosin and thymoctonan, imidazoquinoline derivatives such as 8 levamisole, immunoglobulins and therapeutic vaccines.
- Another preferred embodiment of the invention relates to a composition
- a composition comprising A) the above-described dihydropyrimidines (I) and (la); B) lamivudine; and, if appropriate, C) interferon.
- the antiviral effect of the compounds of the invention on hepatitis B virus is based on the methods described by MA Sells et al., Proc. Natl. Acad. Sci. 84, 1005 1009 (1987) and BE Korba et al., Antiviral Research 19 , 55 70 (1992). Antiviral testing was performed on 96-well microtiter plates. The first column only received medium and HepG2.2.15 cells as a virus control.
- the stock solution of the test compound (50 mM) was first dissolved in DMSO and then diluted in HepG2.2.15 medium.
- the compound according to the invention is typically pipetted 100 ⁇ test concentration (1st test concentration) to the second test column of the microtiter plate each time, and then cultured with 2% by weight fetal calf serum (25 ⁇ volume)
- the base is diluted 2 1 ⁇ in two steps.
- Each well of the microtiter plate containing 2% by weight of fetal bovine serum contained 225 ⁇ l of HepG 2.2.15 cell suspension (5 ⁇ 10 4 cells/ml). 37 °C, 5% C0 2 (v/v) The test mixture was incubated for 4 days.
- the surface suspension was then aspirated and discarded, and 225 ⁇ l of freshly prepared medium was added to the wells.
- the compounds according to the invention were each refilled with a 10-fold concentrated solution in a volume of 251. The mixture was further cultured for 4 days.
- cytotoxic or cytotoxic changes induced by substances in HepG2.2.15 cells for example, changes in cell morphology under a light microscope.
- the changes induced by these substances in HepG2.2.15 cells are evident compared to untreated cells, for example, cytolysis, vacuoles, or changes in cell morphology.
- 50% toxicity (TOX.-50) means that cells that exhibit 50% of the cells compared to the corresponding control cells exhibit a morphology.
- Tolerance of some compounds according to the invention is tested on other host cells, such as HeLa cells, primary human peripheral hematopoietic cells or transformed cell lines such as H-9 cells.
- the concentration of the compound in the present invention is >10 No changes in cytotoxin were detected.
- Detection of viral DNA obtained from HepG2.2.15 cells treated on a nylon filter was performed on non-radioactive, digoxin-labeled hepatitis B DNA probes, each under digoxin labeling, purified and based on hydrazine Confidence in hybridization. Pre-hybridization and hybridization were carried out in 5xSSC, l blocking reagent, 0.1% by weight of N-lauroyl sarcosine, 0.02% by weight of SDS and 100 //g of herring sperm DNA. Pre-hybrid at 60. C was run for 30 minutes and then specifically hybridized with 20 to 40 ng/ml digoxin-labeled, denatured HBV-DNA (14 hours, 60 °C). Wash the filter. Detection of HBV-DNA with digoxin antibody
- the wash filter is hybridized in a closed test (according to the manufacturer's information). Hybridization was carried out using an anti-DIG antibody and alkaline phosphatase for 30 minutes. After the washing step, the substrate of alkaline phosphatase was added, CSPD, and incubated with a filter for 5 minutes, then coated with a plastic film, and incubated at 37 ° C for another 15 minutes. The filter was exposed to the X-ray layer and visible. Luminescent signal of hepatitis B DNA (culture depends on signal intensity: 10 minutes to 2 hours).
- the intracellular or extracellular hepatitis B population is reduced by the compound according to the invention by a maximum half-inhibitory concentration (IC 5 , 50% inhibitory concentration) corresponding to a concentration of 50% of the untreated sample.
- IC 5 50% inhibitory concentration
- the compounds of the present invention exhibited an antiviral effect value of less than 1 ⁇ IC for IC 5Q , which was unexpected.
- the compounds of the invention are useful in the treatment of viral-induced diseases, particularly acute and chronic persistent HBV viral infections.
- Chronic viral diseases caused by HBV may cause morbidity to become severe, and chronic hepatitis B virus infection can lead to cirrhosis and/or hepatocellular carcinogenesis in many cases.
- the indicated regions that may be mentioned are, for example, the treatment of acute and chronic viral infections that may result in infectious hepatitis, such as hepatitis B virus infection.
- the compounds of the invention are especially suitable for the treatment of chronic hepatitis B infection and acute and chronic hepatitis B virus infection.
- the invention includes the preparation of a medicament comprising, in addition to a non-toxic, inert, pharmaceutically suitable carrier, one or more compounds (I) or (la) or compositions of the invention or one or more A composition consisting of the active ingredient (I) or (la) or a composition consisting of the composition of the invention.
- the active ingredients (I) and (la) referred to in the above pharmaceutical preparations have a concentration of from about 0.1 to 99.5% by weight, preferably from about 0.5 to 95% by weight, based on the entire mixture.
- the above pharmaceutical preparation may also contain other active pharmaceutical ingredients other than the compounds (I) and (la).
- the content ratio of components A, B and suitable C in the composition of the invention may vary within wide limits, preferably from 5 to 500 mg A/10 to 1000 mg B, especially from 10 to 200 mg A/20. Up to 400 mg B.
- Component C if appropriate, can also be used, preferably in a total amount of from 1 to 10 million, more preferably from 2 to 7 million, I.U. (international unit), three times a week for a period of more than one year.
- the concentration of the compound or composition of the present invention as referred to in the above pharmaceutical preparation is usually from about 0.1% to 99.5%, preferably from about 0.5% to 95% by weight, based on the entire mixture.
- the above pharmaceutical preparation can be carried out by a known conventional method such as mixing the active ingredient with a carrier.
- the single ingredient contains the active ingredient preferably in a total amount of from about 0.1 to about 80, preferably from 0.1 to 30 mg/kg of body weight.
- the type of preparation, the manner in which the medication is taken, and the time or interval at which the medication is administered are necessary.
- the present invention also relates to the above compounds and compositions for use in the control of diseases.
- the invention further relates to a medicament comprising at least one of the above compounds or compositions and, where appropriate, one or more other active pharmaceutical ingredients.
- the invention further relates to the use of the above compounds and compositions for the preparation of a medicament for the treatment and prevention of the above mentioned diseases, in particular viral diseases, in particular hepatitis B.
- diseases in particular viral diseases, in particular hepatitis B.
- the percentages in the following examples are by weight unless otherwise specified.
- the proportion of the solvent in the mixed solution refers to the volume ratio.
- This compound was synthesized by a method similar to that of Example 5 using the compound obtained in Example 4.
- the anti-HBV active compounds in both examples are enantiomers with a longer retention time.
- the activity data for the compounds of the invention are listed below: Example No. — ⁇ IC 50 (nM)
- the compounds of the invention exhibit potent antiviral effects with IC 5 o of less than 1 nM, and thus, the compounds of the invention can be used for virus-inducing according to the methods described herein or by methods known to those skilled in the art.
- the disease is especially the treatment of acute and chronic persistent HBV infection.
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Description
一种氟苯基 -取代噻唑二氢嘧啶 技术领域
本发明涉及一种新的氟苯基-取代噻唑二氢嘧啶, 其制备方法及 其作为药物的用途, 尤其是在治疗和预防乙型肝炎病毒感染上的应 用。 本发明还涉及这些二氢嘧啶同其他抗病毒剂、 和适当情况下, 免 疫调节剂的组合物, 以及含有这些组合物的药物, 尤其是用于治疗和 预防 HBV感染, 如乙型肝炎。 背景技术
乙型肝炎病毒属于肝病毒科。它可引起急性的和或持续 /渐进的 慢性病。 B型肝炎病毒还引起病理形态中的许多其他的临床表征一一 尤其是肝脏的慢性炎症、 肝硬化和肝细胞的癌变。 另外, 与丁型肝炎 的共同感染在疾病的发展过程中会产生不利影响。
被许可用于治疗慢性肝炎治疗的常规药剂是干扰素和拉米夫定 ( lamivudine )。 然而, 干扰素只具有中等的活性, 并具有有害的副反 应; 虽然拉米夫定(lamivudine )具有良好的活性, 但其在治疗中抗 性发展迅速,并在停止治疗之后常常出现反弹效应,拉米夫定(3-TC ) >的 IC5。值为 300 nM ( Science, 299 ( 2003 ) , 893-896 )。。
US 7074784公开了 6-胺基烷基二氢嘧啶及其作为药物的应用, 尤其是用于治疗和预防乙型肝炎病毒感染。
专利 US 7074784的实施例 12描述了 R1 =邻 -氯, R2 =对 -氯, R6 = 3, 5-二氟 -吡啶 -2-基, X = -CH2- , 和 Z = 吗啉基。 该化合物 能在细胞培养中抑制乙型肝炎病毒的生长, IC50值为 2 nM (自己测 定)。
实施例 12中的主要取代基从二-氯变为 邻-溴 和 R2 =对- 氟, 结果导致化合物 9的 IC5()为 7 nM (专利的实施例 9)。 并且将主 要取代基变为 R1 =邻 -氯, R2 =对-氟 (实施例 5, IC50=2-4 nM) 也
表现出近似的 IC5。值。
这表明 IC5。值不能随着主要取代基 R1 和 R2 的改变而提高(见 表 1 )。
专利 US 7074784 B2也公开了一个实施例,其中二氟残基被噻唑 -2-基(专利的实施例 45)取代。 这个衍生物表现出了相似的 IC5。值, 为 2 nM (见表 1)。
表 1 专利 US7074784B2的实施例
我们现在惊人地发现用噻唑 -2-基取代基, 将主要取代基的变为 邻-氯 和 R2 =对-氟 , 结果得到了 6倍高活性的衍生物, IC5o低 1 ηΜ。 这在阅读 US 7074784是不可能预料到的。 (见表 2 )
及其同分异构体
优选的是, 本发明的分子式 (I) 和 (la)给出的化合物, 其中
R1是邻 -氯, R2是对 -氟, R3是甲基或乙基, R6是噻唑 -2-基, X是亚 甲基, 且 Z是吗啉基.。
本发明还涉及上述化合物的对映异构体及其各自的混合物。外消 旋体能通过已知的手段分离出来,本质上说它是立体异构体中的均一 成分。
本发明的化合物包含分子式 (I) 和 (la) 的异构体及其混合物。 本发明的化合物也可以以盐的形式存在。根据本发明的框架, 生理上 可接受的盐是优选的。
生理上可接受的盐可以是无机酸盐或者有机酸盐。优选的是无机 酸, 诸如酸盐、 氢溴酸、 磷酸或硫酸等, 或者有机羧酸或磺酸, 例如 醋酸、 马来酸、 反丁烯二酸、 苹果酸、 柠檬酸、 酒石酸、 乳酸、 苯甲 酸或甲磺酸、 乙磺酸、 苯磺酸、 甲苯磺酸或萘-二硫磺酸等形成的盐。 生理上可接受的盐还可以是本发明的化合物的金属盐或者铵盐。尤其 优选的例子是钠、 钾、 镁、 或钙盐, 以及由氨或有机胺, 诸如乙胺, 二 -或三乙胺, 二-或三乙醇胺, 二环己基胺, 二甲基氨基乙醇, 精氨 酸, 赖氨酸, 乙二胺, 或 2-苯乙胺等生成的铵盐。
本发明的化合物 (I)可由下述方法制备:
[A] 首先将苯甲醛, (其中 R1 和 R2 的含义如前所述)
与分子式 (III)所示的 β-酮酯
ζ_χ 0(ΠΙ)
(其中 R3、 X和 Z的含义如前所述, 加入或不加入碱或酸, 以适 于存在于惰性有机溶剂中)反应, 得到如分子式(IV )所示的苯亚甲 基化合物
其中 R6含义如前所述, 或者其盐 (例如, 盐酸盐或醋酸盐)加 入或不加入碱或酸, 以适于存在于惰性有机溶剂中, 进行反应或
[B]将分子式 (III)所示化合物同醛(II )和脒 (V)或它们的盐 (诸如, 盐酸盐或醋酸盐 s)加入或不加入碱或酸, 以适于存在于惰性有机溶 剂中, 进行一步反应; 或
[C] 分子式 (I) 中的 X是亚甲基, 分子式 (VI )所示化合物
加入或不加入碱, 以适于存在与惰性溶剂中进行反应。
制备化合物 (VI)可以通过, 例如, 用分子式 (VIII )所示化合物
其中 R R2、 R3 和 R6含义如前所述, 和溴化剂诸如, N-溴 酰亚胺, 优选在惰性溶液中进行反应, 得到分子式(IX )所示化
将具有亲核取代基团的后者直接或者如文献中的常规方法进一 步转变之后, 与吗啉 (VII)反应。
[D] 分子式 (Π )所示的醛与分子式 (X )所示的化合物反应,
o
R3— 0— C― CH=C— X— Z
ΝΗ2 (χ)
其中 R3、 X和 Z含义如前所述, 分子式 (V)所示的脒, 加入或不加 入碱, 为适合存在于惰性溶剂中。 . , 进行反应。
其中 R3含义如前所述, 与吗啉 (VII)反应制得。
作为起始原料的 2-氯 -4-氟-苯甲醛 (II)可通过商业途径获得。
用作起始原料的 β-酮羧酸酯( ΠΙ )是公知的, 或者是能够从文献 公布的已知方法中类推制得的 [如, D. Borrmann, "Umsetzung von Diketen mit Alkoholen, Phenolen und Mercaptanen", in "Methoden der organischen Chemie" ( Houben-Weyl ), vol. VII/4, 230 f ( 1968 ); Y. Oikawa, K. Sugano und O, Yonemitsu, J. Org. Chem. 43 , 2087 ( 1978 )]。
化合物 (V)是 已知 的 , 并可根据 WO-A-99/54326 和 WO-A-99/54329的描述制备。
吗啉 (VII) 可通过商业途径获得。
化合物 (VIII)和 (X)可根据 WO-A-99/54326中的描述按照步骤 [A] 或 [B ]制得。
A、 B、 C和 D所有步骤都适合的溶剂是所有的惰性有机溶剂。 其中优选的包括醇如, 甲醇、 乙醇、 异丙醇, 醚如二恶烷、 二乙醚、 四氢呋喃、 乙二醇单甲醚, 乙二醇二甲醚, 羧酸诸如冰醋酸、 或二甲 基甲酰胺、 二甲基亚砜、 乙腈、 吡啶和六甲基磷酰三胺。
反应温度可以在相当宽的范围内变化。 通常使用 20 到 150 0 C 之间的温度, 但优选的是在所选溶剂的沸点温度。
反应可以在大气压下进行, 也可以在高压下进行。 通常在大气压 下进行。
反应可以在加入或者不加入酸或者碱的环境下进行; 但是, 在弱 酸诸如醋酸或者蚁酸等的存在下进行反应是较好的。
本发明的一种实施方案涉及含有: A)至少一种上述的二氢嘧啶, B)至少一种与 A)不同的其他抗病毒剂的组合物。
本发明的一个详细的实施方案涉及含有: A)上述二氢嘧啶, B) HBV聚合酶抑制剂和, 和合适的情况下, C) 免疫调节剂的组合物。
优选的免疫调节剂 C)包括,例如,所有的干扰素诸如 ct-,β- 和 γ-干扰素, 尤其是 a -2a-和 a -2b-干扰素, 白细胞介素诸如白细胞介 素 -2, 多肽诸如胸腺素 -α-l 和胸腺托南 (thymoctonan), 咪唑喹啉 衍生物诸如 ⑧左咪唑, 免疫球蛋白和治疗疫苗。 .
因此, 本发明还涉及用于治疗和预防 HBV感染的这些组合物及 其在治疗 HBV引发的疾病上的用途。 .
相对于单一化合物的单一治疗, 本发明的组合物的使用对治疗
HBV 引发的疾病是有益的, 主要是增进的抗病毒活性, 以及相对于 单个成分的 Tox-50 (有 50%的细胞存活的毒性范围)来说, 本发明 的组合物具有良好的耐受性。
用于实现本发明目的的 HBV聚合酶抑制剂 Β为 Ph. A. Furman 等 在 《抗微生物制剂与化疗方法》 ( Antimicrobial Agents and Chemotherapy ) Vol.36 ( No.12 ), 2688 ( 1992 ) 中的内生聚合酶实 验中揭示的那些物质, 以及那些在下文中描述的, 抑制 HBVDNA双 链的形成, 从而导致最大 50%活性值为零的那些物质。
在试管中,将 HBV毒粒与核苷 5'-三磷酸盐一起从培养悬浮物中 移至 HBVDNA正链上。 通过使用琼酯糖凝胶电泳, 发现其中存在有 [ot-32P]-脱氧核苷 5'-三磷酸盐和病毒的 3.2 kb DNA的结合产品, 不 存在具有潜在 HBV聚合酶 -抑制性质的物质。 从 HepG2.2.15 细胞 的细胞培养悬浮物中, 用聚乙二醇沉淀、 浓缩得到 HBV毒粒。 将 1 体积份的澄清细胞培养悬浮物与 1/4体积份的含有 50% (重量)聚 乙二醇 8000 和 0.6M氯化钠的水溶液混合。 2500 xg离心沉淀 15分 钟, 沉淀物用 21111含有0.05]^^1^-11(:1]^ 117.5)的缓冲液再悬浮,
用含有 lOOmM 氯化钾的该缓冲液透析。 样品在 -80 °C时冷冻。 每个 反应混合物(100 μ\) 含有至少 105 HBV 毒粒、 50 mM tris-HCl (p.sub.H 7.5)、 300 mM 氯化钾、50 mM氯化镁、 0.1%® Nonident P-40 (非离子型洗涤剂, Boehringer Mannheim)、 10 μΜ dATP , 10 μΜ dGTP , 10 μΜ dTTP; 10 /Ci [32P]dCTP (3000 Ci/mmol; 最终浓度为 33nM) and 1 μΜ 三磷酸形式的聚合酶潜在抑制剂。样品在 37 °C下培 养一个小时, 然后加入 50 mM EDTA 中止反应。 加入 10% 重量 / 体积 SDS 溶液 (每 90 ml水含有 10 g SDS )到最终浓度为 1% (体 积) (基于溶液总体积), 加入蛋白酶 K至最终浓度为 lmg/ml。 然后在 37 °C 培育 1 小时, 用等体积的苯酚 /氯仿 /异戊醇 (体积比为 25:24: 1 ) 溶液提取, DNA从含有乙醇的水相中沉淀出来。 DNA小 球在 10 μ\凝胶缓冲液 (1升水中含有 10.8 g tris、 5.5 g硼酸和 0.75g EDTA(=TBE buffer)) 中在悬浮, 并用琼脂糖凝胶电泳分离。 将其中 的凝胶干燥或者釆用 Southern转移技术将其中的核酸转到膜上。形成 一定数量的标记 DNA双链进行对照检测 (=空白或有惰性对照物进行 ndo-pol反应)。如果存在对照组的最大 50 %浓度则存在 HBV聚合酶 抑制剂。
优选的 HBV 聚合酶抑制剂 B) 包括, 例如, 3TO拉米夫定 ( lamivudine ) =4-氨基小 [(2R-顺式) -2- (羟甲基) -1.3-氧硫茂 -5-基- ]-嘧 啶 -2(1H)-酮 cf. EP-B 382 526 (=U.S. Pat. No. 5, 047, 407)和 WO 91/11186 (=U.S. Pat. No. 5 , 204, 466);
阿德福韦酯( Adefovir dipivoxil ) =9-[2- [双 (特戊酰羟甲氧基)膦酰 甲氧基]乙基]腺嘌呤, cf. EP-B 481 214 (=U.S. Pat. Nos. 5, 663 , 159 和 5 , 792, 756), U.S. Pat. Nos. 4, 724, 233 和 4 , 808, 716;
BMS 200 475=[1S-(L. alpha. , 3..alpha. , 4..beta.)]-2-氨基 -1.9-二氢 -9-[4- 羟基— 3- (羟甲基) -2-亚甲基-环戊基] -6H-嘌呤 -6-酮, cf. EP-B 481 754 (=U.S. Pat. Nos. 5 , 206 , 244 和 5, 340 , 816), WO 98/09964 和
99/41275;
阿巴卡韦 (Abacavir ) =(-)-(lS-顺式) -4-[2-氨基 -6- (环丙胺) -9H-嘌 呤 _9-基] -2-基- 环戊烯 -1-甲醇, cf. EP-B 349 242 (=U.S. Pat. No. 5, 049, 671) 和 EP-B 434 450 (=U.S. Pat. No. 5, 034, 394);
FTC=(2R-顺式 -氨基 -5-氟 -l-[2- (羟甲基) -1.3-氧硫茂 -5-基] -嘧啶 -2(1H)-酮, cf. WO 92/14743 (=U.S. Pat. Nos. 5, 204, 466; 5, 210, 085; 5, 539, 116; 5, 700, 937; 5,728,575; 5, 814, 639; 5, 827, 727; 5, 852, 027; 5, 892, 025; 5, 914, 331; 5, 914, 400) 和 WO 92/18517; ·
P-L-FDDC=5-(6-氨基 -2-氟 -9H-嘌呤 -9-基) -四氢 -2-呋喃甲醇, cf. WO 94/27616 (=U.S. Pat. Nos. 5, 627, 160; 5, 561 , 120; 5,
631, 239 和 5, 830, 881); L-FMAU=l-(2-脱氧 -2-氟 -.beta.-L-阿拉伯 呋喃糖 )-5-甲基 -嘧啶 e- -2.4(1H, 3H)-二酮, cf. WO 99/05157 , WO 99/05158 和 U.S. Pat. No. 5, 753, 789
本发明进一步优选的实施方案涉及含有 A )上述二氢嘧啶 (I)和 (la)及 B)拉米夫定(lamivudine ) 的组合物。
另一个优选的 HBV抗病毒剂 B含有, 例如, 下述分子式所示 的苯基丙烯酰胺
其中, R1 和 R2 , 分别独立为, CrC4 -垸基或者, 在他们所在 的位置上带有一个氮原子,形成具有 5到 6个原子含有碳和 /或氧的 环。 R3 到 R12 , 分别独立为, 氢、 卤素、 Cr C4-烷基、 任意的取代 Cr C4-烷氧基、 硝基,氰基或三氟甲基。 R13是氢, CrC4-烷基, C C7- 酰基或芳垸基, 以及 X是卤素或任意取代的 CrC4-垸基, 及其盐。
这些苯基丙烯酰胺及其制备方法已在 WO 98/33501 中公开, 这 里提及是为了公开的目的。 AT-61 是化合物
优选的免疫调节剂 C)包括例如, 所有的干扰如, ex -, β-和 γ- 干扰素, 尤其还可以是 a -2a- 和 a -2b-干扰, 白细胞介素如白细胞介 素 -2, 多肽如胸腺素 和胸腺托南 ( thymoctonan ), 咪唑喹啉衍 生物如⑧左咪唑, 免疫球蛋白和治疗疫苗。
本发明的另一个优选的实施方式涉及含有 A) 上述二氢嘧啶 (I) 和 (la); B)拉米夫定(lamivudine ); 以及合适的情况下 C) 干扰素 的组合物。
测试说明
本发明的化合物对乙型肝炎病毒的抗病毒作用通过 M. A. Sells 等描述的方法基础上进行研究, Proc. Natl. Acad. Sci. 84, 1005 1009 (1987) and B. E. Korba et al. , Antiviral Research 19, 55 70 (1992). 抗病毒测试在 96-孔微量滴定板上进行。 第一直列只接受培养基 和 HepG2.2.15 细胞, 作为病毒对照.
测试化合物的储备液 (50 mM)是先溶解在 DMSO 中, 然后在 HepG2.2.15 培养基中稀释制得。 根据本发明的化合物通常每次用移 液管移取 100 μΜ 测试浓度 (1st测试浓度) 到微量滴定板的第二测 试列, 然后在加入 2% 重量胎牛血清(体积 25 μ\ ) 的培养基中分两 步稀释 21ΰ倍。
微量滴定板的每个加入了 2% 重量胎牛血清的培养基的孔中都 含有 225〃l HepG2.2.15 细胞悬浮液 (5 χ 104 cells/ml)。 37 °C, 5% C02
(v/v)培养测试混合物 4天。
然后将表面悬浮物吸出丢弃, 向孔中加入 225 μ\新制备的培养 基。 根据本发明的化合物是每个都在 25 1体积中重新加入了 10-fold 浓缩溶液。 混合物继续培养 4天。
在收集悬浮物测试抗病毒效果之前,先在光学显微镜下或者通过 生物化学检测方法 (例如 Alamar Blue stain or Trypan Blue stain)检测 HepG2.2.15细胞细胞毒素的改变。
收集表面悬浮物和 /或细胞并用抽真空的方法在 96-孔斑点室上 覆盖一层尼龙膜(根据制造商的信息)。
细胞毒素的测定
检测 HepG2.2.15 细胞中物质引发的细胞毒素或抑制细胞的改 变, 例如, 在光学显微镜下细胞形态的改变。 HepG2.2.15 细胞的这 些物质引发的改变与未处理过的细胞相比起来是明显的,例如, 细胞 溶解, 液泡或者细胞形态的改变。 50% 毒性 (TOX.-50)指的是相较于 对应的对照细胞 50% 的细胞表现出一种形态。
根据本发明一些化合物的耐受性在其他的宿主细胞如, HeLa细 胞, primary人外周造血细胞或转化细胞系如 H-9 细胞上进行测试。
在将表面悬浮物或溶解的细胞转移到点装置(如上述)的尼龙膜 上之后,将 HepG2.2.15细胞的胞内或胞外悬浮物变性 (1.5 M NaCl/0.5 N NaOH), 中和 (3 M NaCl/0.5 M Tris HCl, pH 7.5) , 然后水洗 (2xSSC)。 通过在 120°C下培养过滤器 2-4小时, 使 DNA回到膜上。 DNA杂化
从尼龙过滤器上处理过的 HepG2.2.15 细胞中得到的病毒 DNA 的检测在非放射性, 地高辛标记的乙型肝炎 DNA探针, 每个均用地 高辛标记条件下进行, 纯化并且根据搡作信心进行杂化。
预杂化和杂化在 5xSSC, l 封闭试剂, 0.1% (重量) N-月桂 酰肌氨酸, 0.02% (重量) SDS 和 100 //g 青鱼精子 DNA中进行。 预杂化在 60。C进行 30 分钟,然后与 20 至 40 ng/ml地高辛标记过的, 变性的 HBV - DNA (14小时, 60°C)进行特定杂化。 洗涤过滤器。 用地高辛抗体检测 HBV-DNA
按照造制造商的信息进行地高辛 -标记 DNA的免疫检测: 洗涤过滤器在封闭试中杂化 (依照制造商的信息)。 杂化使用抗 - DIG抗体和碱性磷酸酶, 进行 30分钟。 在洗涤步骤之后, 加入碱 性磷酸酶的底物, CSPD, 带着过滤器培养 5 分钟, 然后包上塑料膜, 37° C再培养 15 分钟. 将过滤器曝光在 X射线层下, 可看见乙型肝 炎 DNA的发光信号 (培养取决于信号强度:10分钟至 2小时).
胞内或胞外乙型肝炎群被根据本发明的化合物降低相当于未处 理的样本 50 %的浓度下测试最大半抑制浓度 (IC5。, 50% 抑制浓 度) 。
本发明的化合物表现出的抗病毒作用值为 IC5Q低于 1 ηΜ, 这是 没有预料到的。 因此, 本发明的化合物适用于病毒引发的疾病的治, 尤其是急性和慢性持续的 HBV病毒感染。 HBV引发的慢性病毒病可 能导致病态变得严重,慢性乙型肝炎病毒感染在许多情况下可导致肝 硬化和 /或肝细胞癌变。
对本发明的化合物来说, 可能被提及的指示区域是, 例如: 可能 导致传染性肝炎的急性和慢性病毒感染的治疗,例如 乙肝病毒感染。 本发明的化合物尤其适合治疗慢性乙肝感染和急性和慢性乙肝病毒 感染。
本发明包括药物的制备, 除了无毒, 惰性的制药学上合适的载体 之外,还含有一种或多种本发明的化合物 (I)或 (la)或组合物或由一 种或多种活性成分 (I) 或 (la)组成的组合物或由者本发明的组合物组 成的组合物。
上述药物制备中所指的活性成分 (I) 和 (la) , 浓度约为 0.1 至 99.5% (重量), 优选约为 0.5 至 95% (重量),相对于整个混合物。
上述药物制备也可以包含化合物 (I) 和 (la)以外的其他活性药 物成分。
本发明的组合物中组分 A、 B和合适的 C的含量比例可以在较宽 的限制范围内变化, 优选 5至 500 mg A/10 至 1000 mg B, 尤其是 10至 200 mg A/20至 400 mg B.
组分 C, 适当的时候也可使用, 其总使用量, 优选, 1 至 10百 万, 更优选 2至 7百万, I.U. (国际单位), 在超过一年的时期内每周 3次。
上述药物制备所指的本发明的化合物或组合物浓度通常为约 0.1% 至 99.5%, 优选约 0.5% 至 95% , (重量百分比), 相对于整 个混合物。
上述药物制备可以通过公知的常规方法实现,例如将活性成分和 载体混合。
无论是在人体还是在兽医学上每 24小时服用总剂量为约 0.05至 约 500, 优选 0.1至 100mg/kg体重的活性成分已经被普遍证明是有 益的, 合适的单剂的多次服用, 可以达到理想的效果。 单剂含有的 活性成分优选在总量约 0.1 至约 80, 优选 0.1至 30mg/kg体重。 无 论如何, 根据上述剂量尤其是根据个人和治疗对象的体重, 药物制作 的类型,药物服用的方式以及药物服用的时间或间隔有所偏移是必要 的。
因此, 本发明还涉及用于控制疾病的上述化合物和组合物。
本发明还涉及至少含有一种上述化合物或组合物和适当的情况 下, 一种或几种其他活性药物成分的药物。
本发明还涉及,用于制备治疗和预防上述疾病尤其是病毒性疾病 特别是乙型肝炎的药物的上述化合物和组合物的用途。
下述实施例中的百分数均是重量百分数, 特别指明的除外。 混合 溶液中溶剂的比例均指体积比。
实施例
A.中间体
实施例 1
乙基 4-(2-氯 -4-氟苯基 )-2- (噻唑 -2-基) -6-甲基 -1, 4-二氢嘧啶 -5-羧酸 酯
10.0 g (49.3 mmol) of 2-氯 -4-氟苯甲醛, 8.2 g (63.1 mmol) 乙基乙 酰乙酸, 10.3 g (63.1 mmol) 2-脒基-噻唑盐酸盐和 6.2 g (75.7 mmol) 醋 酸钠溶解或悬浮于 500 ml 乙醇中回流下沸腾 16小时。 冷却至室温, 抽气过滤, 水洗残渣去除无机盐。 得产品 12.8 g (53.4%)
熔点: 162-164° C.
实施例 2
甲基 4-(2-氯 -4-氟苯基 )-2- (噻唑 -2-基) -6-甲基 -1,4-二氢嘧啶 -5-羧酸酯 该化合物釆用甲基乙酰乙酸通过类似实施例 1 的方法合成得到< 产率: 55% (熔点: 152-154° C )
实施例 3
乙基 6-氯甲基 - 4-(2-氯 -4-氟苯基)-2- (噻唑 -2-基) -1,4-二氢嘧啶 -5-羧酸 酯
将 4.0 g (8.72 mmol) 实施例 1 制得的乙基 4-(2-氯 -4-氟苯 基)-2- (噻唑 -2-基) -6-甲基 -1, 4-二氢嘧啶 -5-羧酸酯加入到 80 ml 四氯 化碳中, 氩气氛围下加热至 50。 C, 得到澄清溶液。 在此温度, 加入 1.73 g (9.61 mmol) N-溴琥珀酰亚胺, 保持在该温度混合 10分钟。 立 刻冷却, 室温下抽气过滤, 减压浓缩。 根据 HPLC检验产品纯度高于 90%, 并作为下一步的原材料。
RfM).70 (石油醚 /乙酸乙酯 =8:2)
实施例 4
甲基 6-溴甲基 - 4-(2-氯 -4-氟苯基)-2- (噻唑 -2-基) -1 , 4-二氢嘧啶 -5-羧 酸酯
该化合物釆用实施例 2制得的化合物按照类似实施例 3的方法合 成制得。
RiN),70 (石油醚 /乙酸乙酯 =8:2)
B. 制备实施例
实施例 5
乙基 4-(2-氯 -4-氟苯基 )-2- (噻唑 -2-基) -6-(4-吗啉甲基) -1,4-二氢嘧啶 -5-羧酸酯
将 3.0 g 实施例 3 新制备的乙基 -6-溴甲基- 4-(2-氯 -4-氟苯 基 )-2- (噻唑 -2-基) -1, 4-二氢嘧啶 -5-羧酸酯 加入到 40 ml甲醇中形成 溶液, 同 5倍量的吗啉混合, 室温下搅拌 30 分钟。 溶液用水稀释, 乙酸乙酯萃取。
产率: 2.3g
熔点: 155-157° C.
Rf = 0.46 (石油醚 /乙酸乙酯 = 8 : 2)
实施例 6
甲基 4-(2-氯 -4-氟苯基 )-2- (噻唑 -2-基) -6-(4-吗啉甲基) -1, 4-二氢嘧啶 -5-羧酸酯
熔点: 167 -169°C.
Rf = 0.44 (石油醚 /乙酸乙酯 = 8 : 2)
实施例 5 和 6 制得的对映异构体在手性柱 (Daicel Chiralpak AS-H, 流动相: 正己垸 / 乙醇 = 99/1)上分离
两个实施例中的抗 -HBV活性化合物均是保留时间较长的对映体。 本发明的化合物的活性数据列表如下: 实施例 No. — ― IC50(nM)
0.3
(-)-5 0.2
6 0.6 (-)-6 0.3
使用本发明的化合物治疗乙型肝炎病毒产生的 HepG2.2.15 细胞 会导致胞内和 /或胞外病毒 DNA的减少。
工业实用性
实验表明本发明化合物表现出 IC5o低于 1 nM的有效的抗病毒作 用,因而,可以按照本发明所述的方法或本领域技术人员所知的方法, 将本发明化合物用于病毒引发的疾病尤其是急性和慢性持续的 HBV 病毒感染的治疗。
Claims
1、 通式 (I )及其同分异构体 (la)所示的化合物以及其对映异构 体及它们的盐:
其中:
R1 是邻 -氯, R2是对 -氟, R3是 d-C4烷基, R6是噻唑基 -2-基, X是亚甲基, 以及 Z是吗啉基。
2、 如权利要求 1所述的化合物及其对映异构体及它们的盐, 其 中: R1 是邻 -氯, R2是对 -氟, R3是甲基或乙基, R6是噻唑基 -2-基,
X是亚甲基, 以及 z是吗啉基。
3、 具有下述结构的化合物及其对映异构体、 其互变异构体 (la) 及其盐
4、 制备权利要求 1所述化合物的方法, 包括步骤:
[A] 首先将通式 (Π)所示苯甲醛与通式(ΠΙ )所示 β-酮酯反应生
成通式 (IV)所示的苯亚甲基化合物:
其中: I 1、 R2、 R3、 X和 Z具有权利要求 1中所述的含义, 且
其中 R6具有权利要求 1中所述的含义;
[B] 将通式 (III)所示化合物同醛(II)和脒 (V)或其盐,或其它化 合物通过一步法进行反应,
[C] 当通式 (I) 中 X是亚甲基时, 将通式 (VI)所示化合物和 吗啉 (VII)或其盐反应:
[D] 将通式 (II) 所示醛与通式 (X)所示化合物及通式 (V) 所示 的脒或其盐反应:
NH2 (X)
其中, R3、 X和 Z具有权利要求 1中所述的含义。
5、 通式 (XII)所示的化合物:
其中 R1 , R2, R3 和 R6 具有权利要求 1-3中所述的含义并且所 述化合物用作合成化合物 (I)或 (la)的中间体。
6、 权利要求 1-3之任一所述的用于控制疾病的化合物。
7、 一种药物, 该药物含有至少一种权利要求 1至 3所述的化合 物, 适当时, 进一步含有其它活性药物组分。
8、 权利要求 1至 3所述的化合物在制备治疗和预防病毒性疾病 的药物中的用途。
9、 权利要求 1至 3所述的化合物在制备治疗和预防乙型肝炎感 染的药物中的用途。
10、 一种治疗乙型肝炎的方法, 包括给予哺乳动物有效量的权利 要求 1所述的化合物。
11、 一种治疗由乙型肝炎感染引起的疾病的方法, 包括给予哺乳 动物有效量的权利要求 1所述的化合物。
12、 如权利要求 11所述的方法, 其中所述的疾病是肝炎。
13、 如权利要求 11所述的方法, 其中所述的疾病是肝硬化。
14、 如权利要求 11所述的方法, 其中所述的疾病是肝细胞癌变。
15、 一种药物制剂, 其包含一种或多种权利要求 1所述的化合物 及一种药学上可接受的载体。
16、 一种组合物由下列组分组成:
A)至少一种如权利要求 1至 3之任一所述的二氢嘧啶,
B)至少一种不同于 A的 HBV抗病毒剂和, 适当情况下,
C)至少一种免疫调节剂。
17、 如权利要求 16所述的组合物, 其中组分 B是 HBV聚合酶 抑制剂。
18、 如权利要求 16 所述的组合物, 其中组分 B 是 拉米夫定 ( lamivudine ) .
19、 如杈利要求 16所述的组合物, 其中组分 B选自下述通式所 示的化合物及其盐
其中
R1 和 R2 , 分别独立地为, CrC4 -垸基或者, 与其所在位置上 的氮原子一起, 形成具有 5-6个环原子包括碳和 /或氧原子的环,
R3 至 R12,分别独立地为氢, 素, - -烷基,任意的取代 d-C4- 烷氧基, 硝基, 氰基或三氟甲基,
R13是氢, C 烷基, C 酰基或芳烷基, 且 X是 素或任 意的取代 烷基。
20、 如权利要求 19所述的组合物, 其中化合物具有如下结构:
21、 如权利要求 16至 20之任一所述的组合物, 其中免疫调节剂 C包括干扰素。
22、 一种组合物, 其由下述物质组成:
A)权利要求 1至 3所述的二氢嘧啶,
B)拉米夫定(lamivudine )和, 适当时,
C)干扰素。
23、 一种如权利要求 16至 22之任一所述的组合物的制备方法, 其特征在于, 以适合方式组合或混合组分 A, B和, 适当情况下的组 分。。
24、 如权利要求 16至 22之任一所述的用于控制疾病的组合物。
25、 一种药物, 其包含至少一种如权利要求 16至 22 之任一所 述的组合物, 且适当情况下, 其他活性药物成分。
26、如权利要求 16至 22之任一所述的组合物在制备治疗和预防 病毒性疾病的药物中的用途。
27、如杈利要求 16至 22之任一所述的组合物在制备治疗和预防 乙型肝炎感染的药物中的用途。
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