AU2013231052B2 - Crystalline forms of n-(tert-butoxycarbonyl)-3-methyl-l-valyl-(4r)-4-((7-chloro-4-methoxy-1-isoquinolinyl)oxy)-n-((1r,2s)-1-((cyclopropylsulfonyl)carbamoyl)-2-vinylcyclopropyl)-l-prolinamide - Google Patents

Abstract

Abstract The present disclosure generally relates to crystalline forms ofN-(tert butoxycarbonyl)-3 -methyl-L-valyl-(4R)-4-((7-chloro-4-methoxy- 1 isoquinolinyl)oxy)-N-((l R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 vinylcyclopropyl)-L-prolinamide. The present disclosure also generally relates to a pharmaceutical composition comprising one or more of the crystalline forms, as well as methods of using the crystalline forms in the treatment of Hepatitis C virus (HCV) and methods for obtaining such crystalline forms.

Description

5 Regulation 3.2 AUSTRALIA PATENTS ACT, 1990 COMPLETE SPECIFICATION 10 FOR A STANDARD PATENT DIVISIONAL 15 Name of Applicant: BRISTOL-MYERS SQUIBB COMPANY Actual Inventors: PERRONE, Robert Kevin; WANG, Chenchi; YING, William; SONG, Anne I Address for service in AJ PARK, Level 11, 60 Marcus Clarke Street, Canberra ACT Australia: 2601, Australia Invention Title: Crystalline Forms Of N-(Tert-Butoxycarbonyl)-3-Methyl-L Valyl-(4R)-4-((7-Chloro-4-Methoxy- 1 -Isoquinolinyl)Oxy)-N ((1 R,2S)- 1 -((Cyclopropylsulfonyl)Carbamoyl)-2 Vinylcyclopropyl)-L-Prolinamide Original Application: Australian patent application 2008343423 dated 12 December 2008 20 The following statement is a full description of this invention, including the best method of performing it known to us. -1- CRYSTALLINE FORMS OF N-(TERT-BUTOXYCARBONYL)-3-METHYL-L VALYL-(4R)-4-((7-CHLORO-4-METHOXY-1-ISOQUINOLINYL)OXY)-N ((1R,2S)-1-((CYCLOPROPYLSULFONYL)CARBAMOYL)-2 VINYLCYCLOPROPYL)-L-PROLINAMIDE 5 CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Application Serial Number 61/015,795 filed December 21, 2007. 10 The present disclosure generally relates to crystalline forms of N-(tert butoxycarbonyl)-3 -methyl-L-valyl-(4R)-4-((7-chloro-4-methoxy- 1 isoquinolinyl)oxy)-N-((l R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 vinylcyclopropyl)-L-prolinamide. The present disclosure also generally relates to a pharmaceutical composition comprising one or more of the crystalline forms, as well 15 of methods of using the crystalline forms in the treatment of Hepatitis C virus (HCV) and methods for obtaining such crystalline forms. Hepatitis C virus (HCV) is a major human pathogen, infecting an estimated 170 million persons worldwide - roughly five times the number infected by human immunodeficiency virus type 1. A substantial fraction of these HCV infected 20 individuals develop serious progressive liver disease, including cirrhosis and hepatocellular carcinoma. Presently, the most effective HCV therapy employs a combination of alpha interferon and ribavirin, leading to sustained efficacy in 40 percent of patients. Recent clinical results demonstrate that pegylated alpha-interferon is superior to 25 unmodified alpha-interferon as monotherapy. However, even with experimental therapeutic regimens involving combinations of pegylated alpha-interferon and ribavirin, a substantial fraction of patients do not have a sustained reduction in viral load. Thus, there is a clear and unmet need to develop effective therapeutics for treatment of HCV infection. 30 The compound N-(tert-butoxycarbonyl)-3-methyl-L-valyl-(4R)-4-((7-chloro 4-methoxy- 1 -isoquinolinyl)oxy)-N-((1 R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 vinylcyclopropyl)-L-prolinamide is useful for the treatment of HCV infection. During extensive crystallization studies, two crystalline free acid forms, herein -2referred to as Form H-I (hydrate) and Form TlF-1/2 (anhydrous) were isolated. It has been found that each of these forms can be repeatedly crystallized on large scale and that each polymorph possesses characteristics that are acceptable for commercial use. 5 0 CI N 0 H N N, H 0 N N Compound (I) Depending on the humidity, Compound (I) can exist as T1F-1/2 (<15 % 10 relative humidity), H-1 (>450% relative humidity), or a mixture of the two at ~ 15

-

4 5 % relative humidity. FIG. 1 shows the interconversion of Forms H-I and TIF-1/2 as a function of relative humidity. In aqueous solutions, Compound (I) exists as H-1, and Form TIF-1/2 rapidly converts to H-I when suspended in water. Described herein is Form H-I of 0 CI N H N N, H 0 N N 15 Also described herein is Form H-I of -3- 0 CI N H N N. H characterized by the following unit cell parameters: Cell dimensions: a = 10.0802 A b= 16.6055 A 5 c = 24.9294 A a = 90.00 degrees P = 90.00 degrees y = 90.00 degrees Space group P2 1 2 1 2 1 10 Molecules/unit cell 4 wherein measurement of said crystalline form is at a temperature between about 20 'C to about 25 'C. Also described herein is Form H-I of O CI N 0 H N N. H 0 N N 0± 0 &'V 15 characterized by fractional atomic coordinates within the unit cell as listed in Table 3. Also described herein is Form H-I of -4- 0 CI N H N N' H with characteristic peaks in the powder X-Ray diffraction pattern at values of two theta of 6.3 ±0.1, 7.1 ±0.1, 9.4 ±0.1, 10.3 ±0.1, 12.7 ±0.1, 13.8± 0.1, 17.5 ±0.1, 18.7 ± 0.1, 20.6 ± 0. 1, and 22.5 + 0.1 at a temperature between about 20'C and about 5 25 C. Also described herein is Form H-I of O CI N 0 H N N, H 0 N N 0± 0 &'V characterized by one or more of the following: a) a unit cell with parameters substantially equal to the following: 10 Cell dimensions: a = 10.0802 A b= 16.6055 A c = 24.9294 A a = 90.00 degrees P = 90.00 degrees 15 y = 90.00 degrees Space group P2 1 2 1 2 1 Molecules/unit cell 4 wherein measurement of said crystalline form is at a temperature between about 20 0 C to about 25 0 C; -5b) characteristic peaks in the powder X-Ray diffraction pattern at values of two theta of 6.3± 0.1, 7.1 ±0.1, 9.4 ±0.1, 10.3 ±0.1, 12.7 ±0.1, 13.8 ±0.1, 17.5 ±0.1, 18.7± 0.1, 20.6 ± 0. 1, and 22.5 ± 0.1 at a temperature between about 20'C and about 25 'C; and/or 5 c) characterized by fractional atomic coordinates within the unit cell as listed in Table 3. Also described herein is substantially pure Form H-I of O CI N H N N, H 0 N N In a first embodiment, Form H-I has a purity of at least 95 weight percent. In 10 a second embodiment, Form H-I has a purity of at least 99 weight percent. In a first aspect the present disclosure provides Form TlF-1/2 of 0 CI N O N I I INO In a second aspect the present disclosure provides Form TlF-1/2 of -6- 0 CI N H N N' H with characteristic peaks in the powder X-Ray diffraction pattern at values of two theta of 7.3± 0.1, 9.1 ±0.1, 10.0 0.1, 10.6 ±0.1, 11.1 ±0.1, 12.3± 0.1, 15.6 ±0.1, 20.1 ± 0.1, 20.9 ± 0. 1, and 27.8 ± 0.1 at a temperature between about 20'C and about 5 25 C. In a third aspect the present disclosure provides Form TlF-1/2 of O CI N 0 H N N, H 0 N N 0± 0 &'V characterized by one or more of the following: a) characteristic peaks in the powder X-Ray diffraction pattern at values of two theta 10 of 7.3± 0.1, 9.1 ±0.1, 10.0 0.1, 10.6 ±0.1, 11.1 ±0.1, 12.3 ±0.1, 15.6 ±0.1, 20.1 S0. 1, 20.9 ± 0. 1, and 27.8 + 0.1 at a temperature between about 20 0 C and about 25 0 C; and/or c) a first endotherm related to the melt with onset typically in the range of 140-145 0 C, followed by decomposition. 15 In a fourth aspect the present disclosure provides substantially pure Form TIF-1/2 of -7- H N N' H OI N In a first embodiment of the fourth aspect T1F-1/2 has a purity of at least 95 weight percent. In a second embodiment of the fourth aspect Form TIF-1/2 has a purity of at least 99 weight percent. 5 Also described herein is a mixture of Form H-I and Form TlF-1/2 of 0 CI N H N 4 N, H In a fifth aspect the present disclosure provides a pharmaceutical composition comprising Form TIF-1/2 of O CI - N 0 H N N, H 0 N N 10 and a pharmaceutically acceptable carrier or diluent. In a sixth aspect the present disclosure provides a pharmaceutical composition comprising Form TIF-1/2 of -8- 0 CI N H N N' H OI N I N, in combination with at least one additional compound having anti-HCV activity. In a first embodiment of the sixth aspect at least one of the additional compounds having anti-HCV activity is an interferon or ribavirin. In a second embodiment of the sixth 5 aspect the interferon is selected from interferon alpha 2B, pegylated interferon alpha, consensus interferon, interferon alpha 2A, and lymphoblastiod interferon tau. In a third embodiment of the sixth aspect the present disclosure provides a pharmaceutical composition comprising Form T1F-1/2 of 0 CI N H N 4 N, H O N I' -O 10 in combination with at least one additional compound having anti-HCV activity wherein at least one of the additional compounds is selected from interleukin 2, interleukin 6, interleukin 12, a compound that enhances the development of a type 1 helper T cell response, interfering RNA, anti-sense RNA, Imiqimod, ribavirin, an inosine 5'-monophospate dehydrogenase inhibitor, amantadine, and rimantadine. 15 In a seventh aspect the present disclosure provides a method of treating HCV infection in a mammal comprising administering to the mammal a therapeutically effective amount of Form TlF-1/2 of -9- 0 CI N H N No H In a first embodiment of the seventh aspect the mammal is a human. Other embodiments of the present disclosure may comprise suitable combinations of two or more of embodiments and/or aspects disclosed herein. 5 Yet other embodiments and aspects of the disclosure will be apparent according to the description provided below. The compounds of the present disclosure may also exist as tautomers and rotamers; therefore the present disclosure also encompasses all tautomeric forms and rotamers. 10 FIG. 1 illustrates the interconversion of Form H-I and TlF-1/2 as a function of relative humidity. FIG. 2 illustrates experimental and simulated powdered X-Ray diffraction patterns (CuKa k=1.54178 A at T = room temperature) of the H-I crystalline form of Compound (I). 15 FIG. 3 illustrates experimental and indexed powdered X-Ray diffraction patterns (CuKa ?=1.54178 A at T = room temperature) of the TIF-1/2 crystalline form of Compound (I). FIG. 4 illustrates the powdered X-Ray diffraction analysis of Ti F-1/2 and H 1 form interconversion. 20 FIG. 5 illustrates the differential scanning calorimetry pattern of the H-I crystalline form of Compound (I). FIG. 6 illustrates the differential scanning calorimetry pattern of the TIF-1/2 crystalline form of Compound (I). FIG. 7 illustrates the solid state NMR spectrum of the TIF-1/2 crystalline 25 form of Compound (I). -10- FIG. 8 illustrates the thermal gravimetricy analysis patteron of the H-I crystalline form of Compound (I). FIG. 9 illustrates the thermal gravimetricy analysis patteron of the TlF-1/2 crystalline form of Compound (I). 5 The disclosure relates to crystalline forms of Compound (I). O CI~ - N 0 H N N, H 0 N N (I). Definitions As used herein "polymorph" refers to crystalline forms having the same 10 chemical composition but different spatial arrangements of the molecules, atoms, and/or ions forming the crystal. The term "pharmaceutically acceptable," as used herein, refers to those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for contact with the tissues of human 15 beings and animals without excessive toxicity, irritation, allergic response, or other problem complications commensurate with a reasonable benefit/risk ratio. The term "substantially pure," as used herein refers to either Form H-I or Form T1F-1/2 of Compound (I) which is great than about 90% pure. This means that the polymorph of Compound (I) does not contain more than about 10% of any other 20 compound, and, in particular, does not contain more than about 10% of any other form of Compound (I). The term "therapeutically effective amount," as used herein, is intended to include an amount of the crystalline forms of Compound (I) that is effective when administered alone or in combination to treat Hepatitis C. The crystalline forms of 25 Compound (I) and pharmaceutical compositions thereof may be useful in treating Hepatitis C. If Compound (I) is used in combination with another medication, the -11combination of compounds described herein may result in a synergistic combination. Synergy, as described for example by Chou and Talalay, Adv. Enzyme Regul. 1984, 22, 27-55, occurs when the effect of the compounds when administered in combination is greater than the effect of the compounds when administered alone as 5 single agents. The term "treating" refers to: (i) preventing a disease, disorder or condition from occurring in a patient which may be predisposed to the disease, disorder and/or condition but has not yet been diagnosed as having it; (ii) inhibiting the disease, disorder or condition, i.e., arresting its development; and/or (iii) relieving the disease, 10 disorder or condition, i.e., causing regression of the disease, disorder and/or condition. In one embodiment the disclosure provides crystalline forms of Compound (I). These crystalline forms of Compound (I) may be employed in pharmaceutical compositions which may optionally include one or more other components selected, 15 for example, from the group consisting of excipients, carriers, and one of other active pharmaceutical ingredients active chemical entities of different molecular structure. In one embodiment the crystalline forms have phase homogeneity indicated by less than 10 percent, in another embodiment the crystalline forms have phase homogeneity indicated by less than 5 percent, and in another embodiment the 20 crystalline forms have phase homogeneity indicated by less than 2 percent of the total peak area in the experimentally measured PXRD pattern arising from the extra peaks that are absent from the simulated PXRD pattern. In another embodiment the crystalline forms have phase homogeneity with less than 1 percent of the total peak area in the experimentally measured PXRD pattern arising from the extra peaks that 25 are absent from the simulated PXRD pattern. Described herein is a composition consisting essentially of the crystalline form H-I of Compound (I). The composition of this embodiment may comprise at least 90 weight percent of the crystalline form H-I of Compound (I), based on the weight of Compound (I) in the composition. The remaining material comprises other 30 form(s) of the compound and/or reaction impurities and/or processing impurities arising from its preparation. In another embodiment, a composition is provided consisting essentially of the crystalline form TIF-1/2 of Compound (I). The composition of this embodiment -12may comprise at least 90 weight percent of the crystalline form TlF-1/2 of Compound (I), based on the weight of Compound (I) in the composition. The remaining material comprises other form(s) of the compound and/or reaction impuritis and/or processing impurities arising from its preparation. 5 The presence of reaction impurities and/or processing impurities may be determined by analytical techniques known in the art, such as, for example, chromatography, nuclear magnetic resonance spectroscopy, mass spectrometry, or infrared spectroscopy. 10 General Preparation of Crystalline Materials: Crystalline forms may be prepared by a variety of methods, including for example, crystallization or recrystallization from a suitable solvent, sublimation, growth from a melt, solid state transformation from another phase, crystallization from a supercritical fluid, and jet spraying. Techniques for crystallization or 15 recrystallization of crystalline forms from a solvent mixture include, for example, evaporation of the solvent, decreasing the temperature of the solvent mixture, crystal seeding a supersaturated solvent mixture of the molecule and/or salt, freeze drying the solvent mixture, and addition of antisolvents (countersolvents) to the solvent mixture. High throughput crystallization techniques may be employed to prepare 20 crystalline forms including polymorphs. Crystals of drugs, including polymorphs, methods of preparation, and characterization of drug crystals are discussed in Solid State Chemistry of Drugs, S.R. Byrn, R.R. Pfeiffer, and J.G. Stowell, 2 nd Edition, SSCI, West Lafayette, Indiana (1999). For crystallization techniques that employ solvent, the choice of solvent or 25 solvents is typically dependent upon one or more factors, such as solubility of the compound, crystallization technique, and vapor pressure of the solvent. Combinations of solvents may be employed, for example, the compound may be solubilized into a first solvent to afford a solution, followed by the addition of an antisolvent to decrease the solubility of the compound in the solution and to afford 30 the formation of crystals. An antisolvent is a solvent in which the compound has low solubility. In one method to prepare crystals, a compound is suspended and/or stirred in a suitable solvent to afford a slurry, which may be heated to promote dissolution. -13- The term "slurry", as used herein, means a saturated solution of the compound, which may also contain an additional amount of the compound to afford a heterogeneous mixture of the compound and a solvent at a given temperature. Seed crystals may be added to any crystallization mixture to promote 5 crystallization. Seeding may be employed to control growth of a particular polymorph or to control the particle size distribution of the crystalline product. Accordingly, calculation of the amount of seeds needed depends on the size of the seed available and the desired size of an average product particle as described, for example, in "Programmed Cooling of Batch Crystallizers," J.W. Mullin and J. Nyvlt, 10 Chemical Engineering Science, 1971, 26, 369-377. In general, seeds of small size are needed to control effectively the growth of crystals in the batch. Seed of small size may be generated by sieving, milling, or micronizing of large crystals, or by micro crystallization of solutions. Care should be taken that milling or micronizing of crystals does not result in any change in crystallinity of the desired crystal form (i.e., 15 change to amorphous or to another polymorph). A cooled crystallization mixture may be filtered under vacuum, and the isolated solids may be washed with a suitable solvent, such as cold recrystallization solvent, and dried under a nitrogen purge to afford the desired crystalline form. The isolated solids may be analyzed by a suitable spectroscopic or analytical technique, 20 such as solid state nuclear magnetic resonance, differential scanning calorimetry, X Ray powder diffraction, or the like, to assure formation of the preferred crystalline form of the product. The resulting crystalline form is typically produced in an amount of greater than about 70 weight percent isolated yield, preferably greater than 90 weight percent isolated yield, based on the weight of the compound originally 25 employed in the crystallization procedure. The product may be co-milled or passed through a mesh screen to delump the product, if necessary. Crystalline forms may be prepared directly from the reaction medium of the final process for preparing Compound (I). This may be achieved, for example, by employing in the final process step a solvent or a mixture of solvents from which 30 Compound (I) may be crystallized. Alternatively, crystalline forms may be obtained by distillation or solvent addition techniques. Suitable solvents for this purpose include, for example, the aforementioned non-polar solvents and polar solvents, -14including protic polar solvents such as alcohols, and aprotic polar solvents such as ketones. The presence of more than one polymorph in a sample may be determined by techniques such as powder X-Ray diffraction (PXRD) or solid state nuclear magnetic 5 resonance spectroscopy (SSNMR). For example, the presence of extra peaks in an experimentally measured PXRD pattern when compared with a simulated PXRD pattern may indicate more than one polymorph in the sample. The simulated PXRD may be calculated from single crystal X-Ray data. see Smith, D.K., "A FORTRAN Program for Calculating X-Ray Powder Diffraction Patterns," Lawrence Radiation 10 Laboratory, Livermore, California, UCRL-7196 (April 1963). Characterization: Form H-I and Form TlF-1/2 of Compound (I) can be characterized using various techniques, the operation of which are well known to those of ordinary skill 15 in the art. Examples of characterization methods include, but are not limited to, single crystal X-Ray diffraction, powder X-Ray diffraction (PXRD), simulated powder X-Ray patterns (Yin, S.; Scaringe, R. P.; DiMarco, J.; Galella, M. and Gougoutas, J. Z., American Pharmaceutical Review, 2003, 6, 2, 80), differential scanning calorimetry (DSC), solid-state 13C NMR (Earl, W.L. and Van der Hart, D. 20 L., J Magn. Reson., 1982, 48, 35-54), Raman spectroscopy, infrared spectroscopy, moisture sorption isotherms, thermal gravimetric analysis (TGA), and hot stage techniques. The H-I form may be characterized and distinguished using single crystal X Ray diffraction, which is based on unit cell measurements of a single crystal of Form 25 H-1. A detailed description of unit cells is provided in Stout & Jensen, X-Ray Structure Determination: A Practical Guide, Macmillan Co., New York (1968), Chapter 3, which is herein incorporated by reference. Alternatively, the unique arrangement of atoms in spatial relation within the crystalline lattice may be characterized according to the observed fractional atomic coordinates. Another 30 means of characterizing the crystalline structure is by powder X-Ray diffraction analysis in which the diffraction profile is compared to a simulated profile representing pure powder material, both run at the same analytical temperature, and measurements for the subject form characterized as a series of 20 values. -15- One of ordinary skill in the art will appreciate that an X-Ray diffraction pattern may be obtained with a measurement of error that is dependent upon the measurement conditions employed. In particular, it is generally known that intensities in an X-Ray diffraction pattern may fluctuate depending upon 5 measurement conditions employed. It should be further understood that relative intensities may also vary depending upon experimental conditions, and, accordingly, the exact order of intensity should not be taken into account. Additionally, a measurement error of diffraction angle for a conventional X-Ray diffraction pattern is typically about 5 percent or less, and such degree of measurement error should be 10 taken into account as pertaining to the aforementioned diffraction angles. Consequently, it is to be understood that the crystal forms of the present disclosure are not limited to the crystal forms that provide X-Ray diffraction patterns completely identical to the X-Ray diffraction patterns depicted in the accompanying Figures disclosed herein. Any crystal form that provides an X-Ray diffraction pattern, DSC 15 thermogram, or SSNMR spectrum substantially identical to those disclosed in the accompanying Figures falls within the scope of the present disclosure. The ability to ascertain substantial identities of X-Ray diffraction patters is within the purview of one of ordinary skill in the art. 20 Utility: The H-I and TlF-1/2 forms of Compound (I), alone or in combination with each other and/or other compounds, can be used to treat HCV infection. The present disclosure also provides compositions comprising a therapeutically effective amount of Form TlF-1/2 of Compound (I) and at least one 25 pharmaceutically acceptable carrier. The active ingredient, i.e., Form TIF-1/2 of Compound (I), in such compositions typically comprises from 0.1 weight percent to 99.9 percent by weight of the composition, and often comprises from about 5 to 95 weight percent. In some cases, the pH of the formulation may be adjusted with pharmaceutically acceptable 30 modifiers (such as calcium carbonate and magnesium oxide) to enhance the stability of the formulated compound or its delivery form. Formulations of the polymorph of the present disclosure may also contain additives for enhancement of absorption and bioavailability. -16- The pharmaceutical compositions of this disclosure may be administered orally, parenterally or via an implanted reservoir. The term parenteral as used herein includes subcutaneous, intracutaneous, intravenous, intramuscular, intra-articular, intrasynovial, intrasternal, intrathecal, and intralesional injection or infusion 5 techniques. The pharmaceutical compositions may be in the form of a sterile injectable preparation, for example, as a sterile injectable aqueous or oleaginous suspension. This suspension may be formulated according to techniques known in the art using suitable dispersing or wetting agents and suspending agents. The details concerning 10 the preparation of such compounds are known to those skilled in the art. When orally administered, the pharmaceutical compositions of this disclosure may be administered in any orally acceptable dosage form including, but not limited to, capsules, tablets, and aqueous suspensions and solutions. In the case of tablets for oral use, carriers which are commonly used include lactose and corn starch. 15 Lubricating agents, such as magnesium stearate, can also be added. For oral administration in a capsule form, useful carriers/diluents include lactose, high and low molecular weight polyethylene glycol, and dried corn starch. When aqueous suspensions are administered orally, the active ingredient is combined with emulsifying and suspending agents. If desired, certain sweetening and/or flavoring 20 and/or coloring agents may be added. Other suitable carriers for the above noted compositions can be found in standard pharmaceutical texts, e.g. in "Remington's Pharmaceutical Sciences", 19th ed., Mack Publishing Company, Easton, Penn., 1995. Further details concerning the design and preparation of suitable delivery forms of the pharmaceutical compositions 25 of the disclosure are known to those skilled in the art. Dosage levels of between about 0.05 and about 100 milligram per kilogram ("mg/kg") body weight per day, more specifically between about 0.1 and about 50 mg/kg body weight per day of the compounds of the disclosure are typical in a monotherapy for the prevention and/or treatment of HCV mediated disease. 30 Typically, the pharmaceutical compositions of this disclosure will be administered from about 1 to about 3 times per day or alternatively, as a continuous infusion. Such administration can be used as a chronic or acute therapy. The amount of active ingredient that may be combined with the carrier materials to produce a single dosage -17form will vary depending upon the host treated and the particular mode of administration. As the skilled artisan will appreciate, lower or higher doses than those recited above may be required. Specific dosage and treatment regimens for any particular 5 patient will depend upon a variety of factors, including the activity of the specific compound employed, the age, body weight, general health status, gender, diet, time of administration, the duration of treatment, rate of excretion, drug combination, the severity and course of the infection, the patient's disposition to the infection and the judgment of the treating physician. In one embodiment, unit dosage formulations are 10 those containing a daily dose or sub-dose, as herein above recited, or an appropriate fraction thereof, of an active ingredient. Generally, treatment is initiated with small dosages substantially less than the optimum dose of the peptide. Thereafter, the dosage is increased by small increments until the optimum effect under the circumstances is reached. In general, the compound is most desirably administered at 15 a concentration level that will generally afford antivirally effective results without causing any harmful or deleterious side effects. When the compositions of this disclosure comprise a combination of the polymorph of the disclosure and one or more additional therapeutic or prophylactic agents, both the compound and the additional agent are usually present at dosage 20 levels of between about 10 and 100 percent, and more preferably between about 10 and 80 percent of the dosage normally administered in a monotherapy regimen. Administration of the one or more additional agents may occur prior to, after, or simultaneously with the polymorph of the present disclosure. When the polymorph is formulated together with a pharmaceutically 25 acceptable carrier, the resulting composition may be administered in vivo to mammals, such as man, to inhibit NS3/4A or to treat or prevent HCV virus infection. Such treatment may also be achieved using the polymorph of this disclosure in combination with agents which include, but are not limited to: Immunomodulatory agents, such as interferons; other antiviral agents such as ribavirin, amantadine; other 30 inhibitors of NS3/4A; inhibitors of other targets in the HCV life cycle such as helicase, polymerase, metalloprotease, or internal ribosome entry site; or combinations thereof. The additional agents may be combined with the polymorph of this disclosure to create a single dosage form. Alternatively these additional -18agents may be separately administered to a mammal as part of a multiple dosage form. Table 1 below lists some illustrative examples of compounds that can be administered with the compounds of this disclosure. The compounds of the 5 disclosure can be administered with other anti-HCV activity compounds in combination therapy, either jointly or separately, or by combining the compounds into a composition. Table 1 BrandName Physiological Class Type of Inhibitor or Source Target Company NIM811 Cyclophilin Inhibitor Novartis Zadaxin Immunomodulator Sciclone Suvus Methylene blue Bioenvision Actilon (CPG10101) TLR9 agonist Coley Tularik Inc., Batabulin (T67) Anticancer p-tubulin inhibitor South San Francisco, CA ISIS Pharmaceuticals Inc, Carlsbad, ISIS 14803 Antiviral antisense CA/Elan Phamaceuticals Inc., New York, NY Endo Pharmaceuticals Summetrel Antiviral antiviral Holdings Inc., Chadds Ford, PA GS-9132 (ACH-806) Antiviral HCV Inhibitor Achillion / Gilead Pyrazolopyrimidine Arrow From po-200 047 8 Antiviral HCV Inhibitors Therapeutics 26 May 2005 Levovirin Antiviral IMPDH inhibitor CRibapharm Inc Vertex Merimepodib Antiviral IMPDH inhibitor Pharmaceuticals (VX-497) Inc., Cambridge, MA XTL XTL-6865 (XTL-002) Antiviral monoclonal antibody Biopharmaceuti cals Ltd., Rehovot, Isreal Vertex Pharmaceuticals Telaprevir Antiviral NS3 serine protease Inc., Cambridge, (VX-950, LY-5703 10) inhibitor MA/ Eli Lilly and Co. Inc., Indianapolis, IN -19- Brand Name Physiological Class Type of Inhibitor or Source Target Company HCV-796 Antiviral NS5B Replicase Wyeth / Inhibitor Viropharma NM-283 Antiviral NS5B Replicase Idenix / Novartis Inhibitor GL-59728 Antiviral NS5B Replicase Gene Labs / Inhibitor Novartis GL-60667 Antiviral NS5B Replicase Gene Labs / Inhibitor Novartis 2'C MeA Antiviral NS5B Replicase Gilead Inhibitor PSI 6130 Antiviral NS5B Replicase Roche Inhibitor R1 626 Antiviral NS5B3 Replicase Roche Inhibitor 2'C Methyl adenosine Antiviral NS5B Replicase Merck Inhibitor Japan Tobacco JTK-003 Antiviral RdRp inhibitor Inc., Tokyo, Japan ICN Levovirin Antiviral ribavirin Pharmaceuticals, Costa Mesa, CA Schering-Plough Ribavirin Antiviral ribavirin Corporation, Kenilworth, NJ Viramidine Antiviral Ribavirin Prodrug Ribapharm Inc., Costa Mesa, CA Ribozyme Heptazyme Antiviral ribozyme harmaceutals CO Boehringer BILN-2061 Antiviral series protease Ingelheim Ingelheim, Germany SCH 503034 Antiviral series protease Schering Plough SCH 53034Antiiralinhibitor SciClone Zadazim Immune modulator Immune modulator Pharmaceuticals Inc., San Mateo, CA Maxim Ceplene Immunomodulator immune modulator Inarmaceuticals CA F. Hoffmann-La HCV IgG Roche LTD, CellCept Immunosuppressant immunosuppressant Basel, Switzerland Nabi HCV IgG Biopharmaceuti Civacir Immunosuppressant immunosuppressant cals Inc., Boca Raton, FL -20- Brand Name Physiological Class Type of Inhibitor or Source Target Company Human Genome Albuferon - a Interferon albumin IFN-at2b Sciences Inc., Rockville, MD InterMune Infergen A Interferon IFN alfacon- 1 Pharmaceuticals CA Omega IFN Interferon IFN-mo Intarcia Therapeutics Transition IFN-p and EMZ70 1 Interferon IFN-p and EMZ70 1 TherOntario, Canada Rebif Interferon IFN-pla Serwiz Geneva, F. Hofftann-La Roferon A Interferon IFN-ax2a RocBaselTD, Switzerland Schering-Plough Intron A Interferon IFN-ax2b Corporation, Kenilworth, NJ RegeneRx Biopharmiceutic als Inc., Bethesda, MD/ Intron A and Zadaxin Interferon IFN-at2b/ a 1 -thymosin SciClone Pharmaceuticals Inc, San Mateo, CA Schering-Plough Rebetron Interferon IFN-ax2b/ribavirin Corporation, Kenilworth, NJ Actimmune Interferon INF-y InterMune Inc., Interferon- Interferon Interferon- -la Serono Multiferon Interferon Long lasting IFN Viragen/Valenti 5 lymphoblastoid IFN- GlaxoSmithKlin Wellferon Interferon e plc, Uxbridge, atnl UK Omniferon Interferon natural IFN-at Viragen Inc., Plantation, FL F. Hofftann-La Roche LTD, Pegasys Interferon PEGylated IFN-at2a Basel, Switzerland Maxim Pegasys and Ceplene Interferon PEGylated IFN-at2a/ Pharmaceuticals immune modulator Inc., San Diego, CA F. Hofftann-La PEGylated IFN- Roche LTD, Pegasys and Ribavirin Interferon a2a/ribavirin Basel, Switzerland -21- Brand Name Physiological Class Type of Inhibitor or Source Target Company Schering-Plough PEG-Intron Interferon PEGylated IFN-a2b Corporation, Kenilworth, NJ PEGylated IFN- Schering-Plough PEG-Intron / Ribavirin Interferon a2b/ribavirin Corporation, Kenilworth, NJ Indevus IP-501 Liver protection antifibrotic Inc, Lexinton MA Idun IDN-6556 Liver protection caspase inhibitor Inarmaceuticals CA InterMune ITMN-191 (R-7227) Antiviral serine protease Pharmaceuticals inhibitor Inc., Brisbane, CA GL-59728 Antiviral NS5B Replicase Genelabs Inhibitor ANA-971 Antiviral TLR-7 agonist Anadys TMC-465350 Antiviral serine protease Medivir/ inhibitor Tibotec Another aspect of this disclosure provides methods of inhibiting HCV NS3 activity in patients by administering the polymorph of the present disclosure. In one embodiment, these methods are useful in decreasing HCV NS3 activity 5 in the patient. If the pharmaceutical composition comprises only the polymorph of this disclosure as the active component, such methods may additionally comprise the step of administering to said patient an agent selected from an immunomodulatory agent, an antiviral agent, an HCV NS3 inhibitor, or an inhibitor of other targets in the HCV life cycle such as, for example, helicase, polymerase, protease, or 10 metalloprotease. Such additional agent may be administered to the patient prior to, concurrently with, or following the administration of the compounds of this disclosure. In another embodiment, these methods are useful for inhibiting viral replication in a patient. Such methods can be useful in treating or preventing HCV 15 disease. The polymorphs of the disclosure may also be used as a laboratory reagent. The polymorphs may be instrumental in providing research tools for designing of viral replication assays, validation of animal assay systems and structural biology studies to further enhance knowledge of the HCV disease mechanisms. -22- The polymorphs of this disclosure may also be used to treat or prevent viral contamination of materials and therefore reduce the risk of viral infection of laboratory or medical personnel or patients who come in contact with such materials, e.g., blood, tissue, surgical instruments and garments, laboratory instruments and 5 garments, and blood collection or transfusion apparatuses and materials. The following non-limiting examples are illustrative of the disclosure. EXAMPLES 10 Example 1 Preparation of Form H-I/TIF-1/2 Amorphous N-(tert-butoxycarbonyl)-3-methyl-L-valyl-(4R)-4-((7-chloro-4 methoxy- 1 -isoquinolinyl)oxy)-N-((l R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 vinylcyclopropyl)-L-prolinamide (prepared according to the procedure described in 15 U.S. 6,995,174) is stirred or sonicated in ethanol at room temperature with a concentration of 8-10 ml solvent/g compound. The solid first dissolves instantly in the solution and then forms a slurry within several minutes of agitation. The crystal form obtained from the slurry is a solvate (Form E2-2). The slurry is isolated and dried at 50 'C under vacuum, resulting in the formation of TlF-1/2. The T1F-1/2 20 form can transform to H-1, resulting in either a mixture of both forms or conversion to Form H-1, depending on the ambient humidity and temperature conditions. Crystalline N-(tert-butoxycarbonyl)-3-methyl-L-valyl-(4R)-4-((7-chloro-4 methoxy- 1 -isoquinolinyl)oxy)-N-((l R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 25 vinylcyclopropyl)-L-prolinamide is dissolved in ethanol at 50'C with a concentration of 10-12 ml solvent/g compound. (Heptane can be added to the solution at 50 'C at this stage.) The agitated batch is gradually cooled down to 20 'C and aged to develop crystallization. Seeding is optional; it is seeded between 45'C and 20'C to form slurry. The crystal form obtained from the slurry is a solvate. The slurry is then 30 filtered and the solid obtained is dried at 50'C under vacuum, resulting in the formation of TiF-1/2. The TIF-1/2 form can transform to H-1, resulting in either a mixture of both forms or conversion to Form H-1, depending on the ambient humidity and temperature conditions. -23- Solid-state transformation via gas-solid hydration The hydrate H-I can be prepared by converting the free acid TlF-1/2 via hydration with humid air or nitrogen under controlled conditions. The TlF-1/2 form 5 in contact with a humidified air or nitrogen flow transforms into the hydrate over a period of time (flow rate 300-1000 ml/min, RH >90 %, within 24 hrs at room temp). It is also observed that by drying the E2-2 wet cake isolated from crystallization under flowing air or nitrogen at ambient conditions (RH 40-80%, room temp) will eventually convert the solvate to the hydrate. 10 Slurry conversion of hydrate in crystallization Crystallization was prepared in varying compositions of EtOH and water to examine the crystal form(s) obtained and evaluated the feasibility for achieving hydrate directly in the slurry. A high water activity is needed to form hydrate in the 15 slurry conversion: E2-2 wet cake reslurried in water over a period of time at 20-50'C converts to the hydrate with residual E2-2 present in the slurry. This procedure may also apply to other alcohol solvates (e.g., M-1, methanolate) in transforming into the hydrate in a water containing slurry. 20 Example 2 Alternative Preparation of Form H-1 and/or TIF-1/2 Amorphous N-(tert-butoxycarbonyl)-3-methyl-L-valyl-(4R)-4-((7-chloro-4 methoxy- 1 -isoquinolinyl)oxy)-N-((l R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 vinylcyclopropyl)-L-prolinamide (prepared according to the procedure described in 25 U.S. 6,995,174) is stirred or sonicated in isopropyl alcohol at room temperature with a concentration of 5-14 ml solvent/g compound. The solid first dissolves with or without agitation in the solution and then forms a slurry within several minutes. The crystal form obtained from the slurry is a solvate. The slurry is isolated and dried at 50'C under vacuum, resulting in the formation of T1F-1/2. The TIF-1/2 form can 30 transform to H-1, subject to the ambient humidity and temperature conditions. The TlF-1/2 form can transform to H-1, resulting in either a mixture of both forms or conversion to Form H-1, depending on the ambient humidity and temperature conditions. -24- Crystalline N-(tert-butoxycarbonyl)-3-methyl-L-valyl-(4R)-4-((7-chloro-4 methoxy- 1 -isoquinolinyl)oxy)-N-((l R,2S)- 1 -((cyclopropylsulfonyl)carbamoyl)-2 vinylcyclopropyl)-L-prolinamide is dissolved in isopropyl alcohol at 50-60'C with a 5 concentration of 15-17 ml solvent/g compound. (Water can be added to the solution at 60'C at this stage). Seeding is optional. The agitated batch is gradually cooled down to 20'C and aged to develop crystallization. The crystal form obtained from the slurry is a solvate. The slurry is then filtered and the solid obtained is dried at 50'C under vacuum, resulting in the formation of T1F-1/2. The TIF-1/2 form can 10 transform to H-1, subject to the ambient humidity and temperature conditions. The TlF-1/2 form can transform to H-1, resulting in either a mixture of both forms or conversion to Form H-1, depending on the ambient humidity and temperature conditions. 15 Example 3 Alternative Preparation of Form H-1 Crystals of H-I were also prepared as follows: The compound (amorphous or crystalline) was dissolved in methanol. Water was added as an anti-solvent. Prism or plate-shaped crystals were obtained which were a 1:1 methanol solvate. These 20 crystals were left under ambient conditions and converted to Form H-I via slow solvent exchange between methanol in the crystals and moisture in the air. 25 30 Example 4 Alternative Preparation of Form TIF-1 2 -25- O TsOHH2NIO N O 1. Boc-L-Hyp-OH Cl CN O C COMPOUND B) 1. COMPOUND D 0 Cl - M 0 EDAC, HOBT, DIPEA, CH2CI2 0 CI2 Crstllzaio from__________H_ C 2 ar e ta ne N OH 2. Crystallization from MeOH N9 Nl EtOAc and heptaneN NI I Boc Boc H COMPOUND A COMPOUND C COMPOUND E CjoH7C2NO C~oH23CIN206 C2,H3CINOS Mo Wt. 228.07 Mo Wt. 422.86 Mo. Wt. 635.13 15-6N HCI in IPA 1. Boc-L-leucine (COMPOUND G),

N

0 o HATU, i-Pr 2 EtN, CH 2

CI

2 0. 2. Crystallization from EtOH CIN Cl 0 0 H H N NI / N NI / BocHN, H/ N /0 "HCI H N O1 COMPOUND (I) COMPOUND F C35HeCIN5OgS C24H28C12N406S Mol. Wt.: 748.29 Mol. Wt.: 571.47 Preparation of Compound C DMSO (264 ml) was added to a mixture of Compound A (6 g, 26.31 mmol, 5 1.0 eq, 96.5% potency), Compound B (6.696 g, 28.96 mmol, 1.1 eq) and KOtBu (8.856 g, 78.92 mmol, 3 eq) under nitrogen and stirred at 36 0 C for 1 h. After cooling the dark solution to 16 0 C, it was treated with water (66 ml) and EtOAc (132 ml). The resulting biphasic mixture was acidified to pH 4.82 with IN HCl (54 ml) at 11.2-14.6 0 C. The phases were separated. The aqueous phase was extracted once 10 with EtOAc (132 ml). The organic phases were combined and washed with 25% brine (2x 132 ml). Rich organic phase (228 ml) was distilled at 30-40 OC/50 mbar to 37.2 ml. A fresh EtOAc (37.2 ml) was added and distilled out to 37.2 ml at 30-35 OC/50 mbar. After heating the final EtOAc solution (37.2 ml) to 50 0 C, heptane ((37.2 ml) was added at 46-51 0 C and cooled to 22.5 0 C over 2 h. It was 15 seeded with 49 mg of Compound C and held at 23 0 C for 15 min to develop a thin slurry. It was cooled to 0.5 0 C in 30 min and kept at 0.2-0.5 0 C for 3 h. After the filtration, the cake was washed with heptane (16.7 ml) and dried at 47 0 C/80 mm/15.5 h to give Compound C as beige colored solids (6.3717 g, 58.9% corrected yield, 99.2% potency, 97.4 AP). 20 Preparation of Compound E -26- DIPEA (2.15 ml, 12.3 mmol, 1.3 eq) followed by EDAC (2 g, 10.4 mmol, 1.1 eq) were added to a mixture of Compound C (4 g, 9.46 mmol, 97.4% potency, 98.5 AP), Compound D (4.568 g, 11.35 mmol, 1.20 eq), HOBT-H20 (0.86 g, 4.18 mmol, 0.44 eq) in CH 2 Cl 2 (40 ml) at 23-25 0 C under nitrogen. The reaction was complete 5 after 3 h at 23-25 0 C. It was then washed with IN HCl (12 ml), water (12 ml) and 25% brine (12 ml). MeOH (80 ml) was added to the rich organic solution at 25 0 C, which was distilled at atmospheric pressure to ~60 ml to initiate the crystallization of the product. The crystal slurry was then cooled from 64 0 C to 60 0 C in 5 min and stirred at 60 0 C for 1 h. It was further cooled to 24 0 C over 1.5 h and held at 24 0 C for 10 2 h. After the filtration, the cake was washed with MeOH (12 ml) and dried at 51 0 C/20-40 mm/18 h to give Compound E (5.33 g, 89% yield, 97.7% potency, 99.1 AP). Preparation of Compound F 15 5-6N HCl in IPA (10.08 ml, 50.5 mmol, Normality: 5N) was added in four portions in 1 h to a solution of Compound E (8 g, 12.6 mmol, 97.7% potency, 99.1 AP) in IPA (120 ml) at 75 0 C. After stirring for 1 h at 75 0 C, the resulting slurry was cooled to 21 0 C in 2 h and stirred at 21 0 C for 2 h. It was filtered and the cake was washed with IPA (2x 24 ml). The wet cake was dried at 45 0 C/House vacuum/i 6 h to 20 give Compound F as an off-white solid (6.03 g, 84.5% yield, 98.5% potency, 100 AP). Preparation of Compound (I) DIPEA (9.824 ml) followed by HATU (7.99 g) were added to a stirred 25 mixture of Compound F (10 g, 99.2% potency, 99.6 AP) and Compound G (4.41 g) in CH 2 Cl 2 (100 ml) at 2.7-5 0 C under nitrogen. The resulting light brown solution was stirred at 0.2-3 0 C for 1.5 h, at 3-20 0 C in 0.5 h and at 20-23 0 C for 15.5 h for a reaction completion. It was quenched with 2N HCl (50 ml) at 23 0 C and stirred for 20 min at 23-24 0 C. The biphasic mixture was polish filtered through diatomaceous 30 earth (Celite ) (10 g) to remove insoluble solids of HOAT and HATU. The filter cake was washed with 20 ml of CH 2 Cl 2 . After separating the organic phase from the filtrates, it was washed with 2N HCl (5x 50 ml) and water (2x 50 ml). The organic -27phase (115 ml) was concentrated to ~50 ml, which was diluted with absolute EtOH (200 proof, 100 ml) and concentrated again to ~50 ml. Absolute EtOH (50 ml) was added to bring the final volume to 100 ml. It was then warmed to 50 0 C to form a clear solution and held at 50 0 C for 35 min. The ethanolic solution was cooled from 5 50 to 23 0 C over 15 min to form the crystal slurry. The slurry was stirred at 23 0 C for 18 h, cooled to 0.3 0 C over 30 min and kept at 0.2-0.3 0 C for 2 h. After the filtration, the cake was washed with cold EtOH (2.7 0 C, 2x 6 ml) and dried at 53 0 C/72 mm/67 h to give Compound (I) in Form T1F-1/2 as an off white solid (10.49 g, 80.7% yield, 99.6 AP). 10 Forms H-I and TlF-1/2 were analyzed using one or more of the testing methods described below. 1 Single Crystal X-Ray Measurements A Nonius Kappa CCD diffractometer equipped with graphite-monochromated 15 Mo Ka radiation (k = 0.7107 A) was used to collect diffraction data at room temperature. A full data set was collected using the o scan mode over the 20 range and processed using the routine associated with the diffractometer system (Kappa CCD Software, Nonius BV, Delft, The Netherlands, 1999). The final unit cell parameters were determined using the entire data set. All structures were solved by 20 direct methods and refined by the full-matrix least-squares techniques, using the SHELXTL software package (Sheldrick, GM. 1997, SHELTL. Structure Determination Programs. ersion 5.10, Bruker AXS, Madison, Wisconsin, USA). The function minimized in the refinements was Ew(IFo| - Fcl) . R is defined as Y |F 0 | 2 1/2 - Fc|/E Fo| while Rw = II-w( Fo| - |Fcl)2/Xw Fo| ] , where w is an appropriate 25 weighting function based on errors in the observed intensities. Difference Fourier maps were examined at all stages of refinement. All non-hydrogen atoms were refined with anisotropic thermal displacement parameters. The hydrogen atoms associated with hydrogen bonding were located in the final difference Fourier maps while the positions of the other hydrogen atoms were calculated from an idealized 30 geometry with standard bond lengths and angles. They were assigned isotropic temperature factors and included in structure factor calculations with fixed parameters. -28- The crystal data of the H-I form is shown in Table 2. The fractional atomic coordinates are listed in Table 3. It should be understood by one of ordinary skill in the art that slight variations in the coordinates are possible and are considered to be within the scope the present disclosure. 5 Table 2. Crystal Data of Form H-I Temperature room temperature Wavelength 0.7107 A 10 Crystal system, space group Orthorhombic Unit cell dimensions a = 10.0802(1) A alpha = 90.00 b = 16.6055(2) A beta = 90.00 c = 24.9294(3) A gamma = 90.00 Volume 4172.85(8) A 3 15 Z, Calculated density 4, 1.220 Mg/m 3 Table 3. Atomic coordinates Atom X Y Z Atom X Y Z S(1) 4633(2) 1649(1) 6093(1) 0(8) 2101(3) 6221(2) 4962(2) N(1) 4351(5) 2223(2) 5569(2) C(1) 2870(11 464(5) 5759(4) N(2) 3770(4) 3280(2) 4728(1) C(2) 4303(8) 668(3) 5873(3) N(3) 3590(4) 4937(2) 5607(2) C(3) 3535(11 137(4) 6251(3) N(4) 2677(6) 4277(4) 6916(2) C(4) 5005(5) 2093(3) 5089(2) 0(1) 3677(8) 1898(3) 6465(2) C(5) 4463(4) 2547(3) 4620(2) 0(2) 5997(7) 1682(4) 6230(3) C(6) 5213(6) 2451(3) 4100(2) 0(3) 5891(4) 1613(2) 5053(2) C(7) 3892(6) 2041(3) 4159(2) 0(4) 5570(3) 3910(2) 5093(2) C(8) 3733(7) 1146(4) 4208(2) 0(5) 3215(3) 3701(2) 5941(1) C(9) 4597(9) 621(4) 4048(5) 0(6) 1838(7) 5342(6) 7297(3) C(10) 4385(4) 3907(2) 4968(2) 0(7) 965(8) 4111(6) 7476(3) C(11) 3500(4) 4639(2) 5061(2) C(12) 3970(6) 5355(3) 4730(2) C(30) 304(8) 6707(3) 4469(3) C(13) 3495(5) 6077(3) 5045(2) C(31) -584(7) 6494(3) 4875(3) -29- Atom X Y Z Atom X Y Z C(14) 3637(6) 5819(3) 5640(2) C(32) -1848(7) 6620(4) 4807(5) C(15) 3451(5) 4424(3) 6021(2) C(33) -2325(15) 6965(6) 4310(7) C(16) 3606(6) 4702(3) 6603(2) C(34) -1576(17) 7197(5) 3918(5) C(17) 5104(7) 4618(4) 6797(3) Cl(1) -2988(2) 6335(2) 5319(2) C(18) 5991(7) 5136(5) 6512(3) C(4') -530(14) 5479(13) 7544(9) C(19) 5075(13 4835(6) 7407(3) C(3') 1250(30) 6541(9) 7751(10) C(20) 5573(8) 3749(5) 6748(4) C(2') 1088(19) 5236(10) 8267(5) C(21) 1764(11 4565(8) 7247(3) C(l') 921(17) 5659(9) 7735(6) C(26) 1723(7) 6568(3) 4504(2) 0(28) 253(10) 7631(5) 3159(3) N(5) 2626(8) 6756(3) 4152(2) C(281 1165(18) 7762(10) 2753(6) C(27) 2129(14) 7105(5) 3682(3) OW 1760(70) 6690(30) 6150(30) C(28) 820(19) 7272(4) 3590(3) C(29) -131(13) 7075(3) 3984(3) 2. Powder X-Ray Diffraction X-Ray powder diffraction (PXRD) data were obtained using a Bruker C2 GADDS. The radiation was Cu Ka (40 KV, 50mA). The sample-detector distance 5 was 15 cm. Powder samples were placed in sealed glass capillaries of Imm or less in diameter; the capillary was rotated during data collection. Data were collected for 3<2035' with a sample exposure time of at least 2000 seconds. The resulting two dimensional diffraction arcs were integrated to create a traditional 1-dimensional PXRD pattern with a step size of 0.02 degrees 20 Oin the range of 3 to 35 degrees 10 20. The results of the PXRD pattern and a simulated pattern calculated from the single crystal data for Form H-I are shown in FIG. 2. The results of the PXRD pattern for Form T1F-1/2 is shown in FIG. 3. FIG. 4 shows the PXRD analysis of Form TIF-1/2 and Form H-i 15 interconversion. Table 4 lists the characteristic PXRD peaks that describe Forms H-I and TIF 1/2 of Compound (I). -30- Table 4. Characteristic diffraction peak positions (degrees 20 ± 0.1) at room temperature, based on a high quality pattern collected with a diffractometer (cuKU) with a spinning capillary with 20 calibrated with a NIST traceable standard. Form H-1 Form T1F-1/2 6.3 7.3 7.1 9.1 9.4 10.0 10.3 10.6 12.7 11.1 13.8 12.3 17.5 15.6 18.7 20.1 20.6 20.9 22.5 27.8 5 3. Differential Scanning Calorimetry Differential scanning calorimetry (DSC) experiments were performed in a TA Instruments TM model Q2000, Q1000 or 2920. The sample (about 2-6mg) was weighed in an aluminum pan and recorded accurately to a hundredth of a milligram, and transferred to the DSC. The instrument was purged with nitrogen gas adt 50 10 mL/min. Data were collected between room temperature and 300 'C at 10 'C/min heating rate. The plot was made with the endothermic peaks pointing down. The DSC pattern of Form H-I is shown in FIG. 5. The DSC pattern of Form TIF-1/2 is shown in FIG. 6. 15 4. Solid-State NMR (SSNMR) All solid-state C-13 NMR measurements were made with a Bruker DSX-400, 400 MHz NMR spectromter. High resolution spectra were obtained using high power proton decoupling and the TPPM pulse sequence and ramp amplitude cross polarization (RAMP-CP) with magic-angle spinning (MAS) at approximately 12 kHz 20 (A.E. Bennett et al. J. Chem. Phys. 1995, 103, 6951). (G. Metz, X. Wu, and S.O. Smith, J. Magn. Reson. A., 1994, 110, 219-227). Approximately 70 mg of sample, -31packed into a canister-design zirconia rotor was used for each experiment. Chemical shifts (6) were referenced to external adamantane with the high frequency resonance being set to 38.56 ppm (W.L. Earl and D.L. VanderHart, J Magn. Reson., 1982, 48, 35-54). 5 The SSNMR spectra for Form TIF-1/2 is shown in FIG. 7. 5. Thermal Gravimetric Analysis (TGA) (Open Pan) Thermal gravimetric analysis (TGA) experiments were performed in a TA InstrumentsTM model Q500 or 2950. The sample (about 10-30 mg) was placed in a 10 platinum pan previously tared. The weight of the sample was measured accurately and recorded to a thousand of a milligram by the instrument. The furnace was purged with nitrogen gas at 1 00mL/min. Data were collected between room temperature and 300 C at 10 C/min heating rate. The TGA patterns of Form H-I and Form T1F-1/2 are shown in FIG. 9 and 15 FIG. 10, respectively. The term "comprising" as used in this specification and claims means "consisting at least in part of'. When interpreting statements in this specification and claims which include "comprising", other features besides the features prefaced by this term in each statement can also be present. Related terms such as "comprise" 20 and "comprised" are to be interpreted in similar manner. In this specification where reference has been made to patent specifications, other external documents, or other sources of information, this is generally for the purpose of providing a context for discussing the features of the invention. Unless 25 specifically stated otherwise, reference to such external documents is not to be construed as an admission that such documents, or such sources of information, in any jurisdiction, are prior art, or form any part of the common general knowledge in the art. -32-

Claims (4)

1. Form T1F-1/2 of 0 CI N H N N'. H 0 N N 5

2. Form T1F-1/2 of O CI N 0 H N N. H 0 N I N O 0± 0 &'V with characteristic peaks in the powder X-Ray diffraction pattern at values of two theta of 7.3± 0.1, 9.1 ±0.1, 10.0 0.1, 10.6 ±0.1, 11.1 ±0.1, 12.3± 0.1, 15.6 ±0.1, 10 20.1 ± 0.1, 20.9 ± 0. 1, and 27.8 ± 0.1 at a temperature between about 20'C and about 25 0 C.

3. Form T1F-1/2 of -33- 0 CI N H N N' H OI N I N, characterized by one or more of the following: a) characteristic peaks in the powder X-Ray diffraction pattern at values of two theta of 7.3± 0.1, 9.1 ±0.1, 10.0 0.1, 10.6 ±0.1, 11.1 ±0.1, 12.3 ±0.1, 15.6 ±0.1, 20.1 5 0. 1, 20.9 ± 0. 1, and 27.8 + 0.1 at a temperature between about 20'C and about 25 'C; and/or c) a first endotherm related to the melt with onset typically in the range of

140-145 'C, followed by decomposition. 10 4. Substantially pure Form TlF-1/2 of 0 CI N H0 ± 41N 5. A pharmaceutical composition comprising Form TlF-1/2 of -34- 0 CI N H N N' H OI N I N, and a pharmaceutically acceptable carrier or diluent. 6. A pharmaceutical composition comprising Form TlF-1/2 of O CI N 0 H N N, H O N I' -O 5 11 in combination with at least one additional compound having anti-HCV activity. 7. The composition of Claim 6 wherein at least one of the additional compounds having anti-HCV activity is an interferon or ribavirin. 10 8. The composition of Claim 7 wherein the interferon is selected from interferon alpha 2B, pegylated interferon alpha, consensus interferon, interferon alpha 2A, and lymphoblastiod interferon tau. 15 9. The composition of Claim 6 wherein at least one of the additional compounds is selected from interleukin 2, interleukin 6, interleukin 12, a compound that enhances the development of a type 1 helper T cell response, interfering RNA, anti sense RNA, Imiqimod, ribavirin, an inosine 5'-monophospate dehydrogenase inhibitor, amantadine, and rimantadine. -35- 10. A method of treating HCV infection in a mammal comprising administering to the mammal a therapeutically-effective amount of Form T1F-1/2 of 0 CI N H N N, H 0 N | 5 11. The method of Claim 10 wherein the mammal is a human. -36-