NZ612912B2 - Solid forms of gyrase inhibitor (r)-1-ethyl-3-[5-[2-{1-hydroxy-1-methyl-ethyl}pyrimidin-5-yl]-7-(tetrahydrofuran-2-yl}-1h-benzimidazol-2-yl]urea - Google Patents
Solid forms of gyrase inhibitor (r)-1-ethyl-3-[5-[2-{1-hydroxy-1-methyl-ethyl}pyrimidin-5-yl]-7-(tetrahydrofuran-2-yl}-1h-benzimidazol-2-yl]urea Download PDFInfo
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- NZ612912B2 NZ612912B2 NZ612912A NZ61291212A NZ612912B2 NZ 612912 B2 NZ612912 B2 NZ 612912B2 NZ 612912 A NZ612912 A NZ 612912A NZ 61291212 A NZ61291212 A NZ 61291212A NZ 612912 B2 NZ612912 B2 NZ 612912B2
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- New Zealand
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- resistant
- compound
- staphylococcus aureus
- solid
- streptococcus pneumoniae
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- 239000002271 gyrase inhibitor Substances 0.000 title description 2
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Abstract
The disclosure relates to solid forms of compound of formula (I) and pharmaceutically acceptable salts thereof, particularly the hydrochloride salt and the solid amorphous mesylate salt, that inhibit bacterial enzymes gyrase and/or topoisomerase IV. Also disclosed are pharmaceutical compositions comprising said compound of formula (I) or its salts and their use for treating bacterial infection. prising said compound of formula (I) or its salts and their use for treating bacterial infection.
Description
SOLID FORMS OF GYRASE INHIBITOR (R)— l—ETHYL—3 — [5 —[2—( l—HYDROXY— l —
METHYL—ETHYL)PYRIMIDIN—5—YL]—7—(TETRAHYDROFURAN—2—YL)— lH—
BENZIMIDAZOL—Z—YL]UREA
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the benefit under 35 U.S.C. § 119 of United States
Provisional Patent ation serial number 61/433,161 filed January 14, 2011, the entire
contents of which is incorporated herein by reference.
BACKGROUND OF THE APPLICATION
Bacterial resistance to antibiotics has long been recognized, and it is today
considered to be a serious worldwide health problem. As a result of resistance, some
ial infections are either difficult to treat with antibiotics or even untreatable. This
problem has become especially serious with the recent pment of multiple drug
resistance in certain strains of bacteria, such as Streptococcus pneumoniae (SP),
Mycobacterium tuberculosis, and Enterococcus. The appearance of vancomycin resistant
enterococcus was particularly alarming e vancomycin was formerly the only effective
otic for treating this infection, and had been considered for many infections to be the
drug of "last resort". While many other drug-resistant bacteria do not cause hreatening
disease, such as enterococci, there is the fear that the genes which induce resistance might
spread to more deadly organisms such as Staphylococcus aureus, where methicillin resistance
is already prevalent (De Clerq, et al., Current n in Anti-infective Investigational Drugs,
1999, 1, 1; Levy, "The Challenge of Antibiotic ance", ific American, March,
1998).
Another concern is how quickly otic resistance can spread. For e,
until the 1960's SP was universally sensitive to penicillin, and in 1987 only 0.02% of the SP
strains in the US. were ant. However, by 1995 it was reported that SP resistance to
penicillin was about seven percent and as high as 30% in some parts of the US. (Lewis, FDA
Consumer magazine (September, 1995); Gershman in The Medical Reporter, 1997).
Hospitals, in particular, serve as centers for the formation and transmission of
drug-resistant organisms. Infections occurring in hospitals, known as nosocomial infections,
are becoming an increasingly serious problem. Of the two million Americans infected in
_ 1 _
hospitals each year, more than half of these infections resist at least one antibiotic. The
Center for e l reported that in 1992, over 13,000 hospital patients died of
bacterial infections that were resistant to antibiotic treatment (Lewis, "The Rise of Antibiotic-
Resistant Infections", FDA er magazine, September 1995).
As a result of the need to combat drug—resistant bacteria and the increasing failure
of the available drugs, there has been a resurgent interest in ering new antibiotics. One
attractive strategy for developing new antibiotics is to inhibit DNA gyrase and/or
topoisomerase IV, bacterial enzymes necessary for DNA replication, and therefore, necessary
for bacterial cell growth and division. Gyrase and/or topoisomerase IV activity are also
associated with events in DNA transcription, repair and recombination.
Gyrase is one of the topoisomerases, a group of enzymes which ze the
interconversion of topological isomers ofDNA (see generally, Kornberg and Baker, DNA
ation, 2d Ed., Chapter 12, 1992, W. H. n and Co.; Drlica, Molecular
Microbiology, 1992, 6, 425; Drlica and Zhao, Microbiology and Molecular Biology Reviews,
1997, 61, pp. 377—392). Gyrase itself controls DNA supercoiling and relieves gical
stress that occurs when the DNA strands of a parental duplex are untwisted during the
replication process. Gyrase also catalyzes the conversion of d, closed circular duplex
DNA to a negatively superhelical form which is more favorable for ination. The
mechanism of the supercoiling reaction involves the wrapping of gyrase around a region of
the DNA, double strand breaking in that region, passing a second region of the DNA through
the break, and rejoining the broken strands. Such a cleavage mechanism is characteristic of a
type II topoisomerase. The supercoiling reaction is driven by the binding of ATP to .
The ATP is then hydrolyzed during the reaction. This ATP binding and subsequent
hydrolysis cause conformational changes in the DNA-bound gyrase that are necessary for its
activity. It has also been found that the level of DNA supercoiling (or relaxation) is
dependent on the ATP/ADP ratio. In the absence of ATP, gyrase is only capable of relaxing
supercoiled DNA.
ial DNA gyrase is a 400 kilodalton protein tetramer consisting of two A
(GyrA) and two B subunits (GyrB). Binding and cleavage of the DNA is associated with
GyrA, whereas ATP is bound and hydrolyzed by the GyrB protein. GyrB consists of an
amino-terminal domain which has the ATPase activity, and a y-terminal domain which
interacts with GyrA and DNA. By contrast, eukaryotic type II topoisomerases are
homodimers that can relax negative and positive supercoils, but cannot introduce negative
supercoils. Ideally, an antibiotic based on the inhibition of bacterial DNA gyrase and/or
topoisomerase IV would be selective for these enzymes and be relatively inactive against the
eukaryotic type II topoisomerases.
Topoisomerase IV primarily es linked chromosome dimers at the conclusion
ofDNA replication.
The widely—used quinolone antibiotics inhibit bacterial DNA gyrase(GyrA) and/or
Topoisomerase IV (ParC). Examples of the quinolones include the early compounds such as
nalidixic acid and oxolinic acid, as well as the later, more potent fluoroquinolones such as
norfloxacin, ciprofloxacin, and trovafloxacin. These compounds bind to GyrA and/or ParC
and stabilize the cleaved complex, thus inhibiting overall gyrase function, leading to cell
death. The fluoroquinolones inhibit the catalytic subunits of gyrase (GyrA) and/or
Topoisomerase IV (Par C) (see Drlica and Zhao, Microbiology and Molecular Biology
Reviews, 1997, 61, 377—3 92). However, drug resistance has also been recognized as a
problem for this class of compounds (WHO Report, "Use of Quinolones in Food Animals and
ial Impact on Human Health", 1998). With the quinolones, as with other classes of
antibiotics, bacteria exposed to earlier compounds often quickly develop resistance to
more potent compounds in the same class.
The associated subunits sible for supplying the energy necessary for
catalytic tumover/resetting of the enzymes via ATP hydrolysis are GyrB (gyrase) and ParE
(topoisomerase IV), respectively (see, Champoux, J.J., Annu. Rev. Biochem., 2001, 70, pp.
369—413). nds that target these same ATP binding sites in the GyrB and ParE
subunits would be useful for ng various bacterial infections (see, Charifson et al., J.
Med. Chem., 2008, 51, pp. 5243—5263).
There are fewer known tors that bind to GyrB. Examples include the
ins, novobiocin and mycin A1, cyclothialidine, cinodine, and clerocidin. The
coumarins have been shown to bind to GyrB very y. For example, novobiocin makes a
network of hydrogen bonds with the protein and several hydrophobic contacts. While
novobiocin and ATP do appear to bind within the ATP binding site, there is l overlap
in the bound orientation of the two compounds. The overlapping portions are the sugar unit
of novobiocin and the ATP adenine (Maxwell, Trends in Microbiology, 1997, 5, 102).
For coumarin-resistant bacteria, the most prevalent point mutation is at a e
ne residue that binds to the carbonyl of the coumarin ring (Arg136 in E. coli GyrB).
While s with this mutation show lower oiling and ATPase activity, they are
also less sensitive to tion by coumarin drugs (Maxwell, Mol. Microbiol., 1993, 9, 681).
Despite being potent inhibitors of gyrase oiling, the coumarins have not
been widely used as antibiotics. They are generally not suitable due to their low permeability
in ia, otic toxicity, and poor water lity (Maxwell, Trends in Microbiology,
1997, 5, 102). It would be desirable to have a new, effective GyrB and ParE inhibitor that
overcomes these drawbacks and, preferably does not rely on binding to Arg136 for activity.
Such an inhibitor would be an attractive antibiotic candidate, without a history of resistance
problems that plague other classes of antibiotics.
As bacterial resistance to otics has become an important public health
problem, there is a continuing need to develop newer and more potent antibiotics. More
particularly, there is a need for antibiotics that represent a new class of compounds not
previously used to treat bacterial infection. Compounds that target the ATP binding sites in
both the GyrB (gyrase) and ParE (topoisomerase IV) subunits would be useful for treating
various bacterial infections. Such compounds would be particularly useful in treating
nosocomial infections in hospitals where the ion and transmission of resistant bacteria
are ng increasingly prevalent.
SUMMARY OF THE APPLICATION
The present application is directed to solid and amorphous forms of (R)— 1-ethyl[5-[2-(1-hydroxymethyl-ethyl)pyrimidin-5 -yl][(2R)-tetrahydrofuranyl]-1H-
benzimidazolyl]urea (“the benzimidazolyl urea compound”) and methods for preparing
same. In one embodiment, the present ation provides for a solid form of the
benzimidazolyl urea compound. In one embodiment, the solid form is FormI solid form
characterized by an by an X-ray powder diffraction pattern (XPRD) comprising at least three
approximate peak positions (degrees 2 0 :: 0.2) when measured using Cu K“ radiation,
selected from the group consisting of 9.3, 11.7, 12.4, 13.8, 14.6, 16.0, 16.2, 16.7, 18.6, 18.9,
19.6, 20.2, 20.5, 21.3, 1.7, 22.7, 23.9, 24.5, 24.9, 25.8, 26.7, 27.9, 28.1, 28.4, 30.4, 33.5, and
37.4, when the XPRD is collected from about 5 to about 38 degrees two theta (2 0). In
certain embodiments, solid Form I may be characterized by an X-ray powder diffraction
pattern (XPRD) comprising at least three approximate peak positions (degrees 2 0 :: 0.2)
when measured using Cu K0, radiation, selected from the group consisting of 9.3, 16.7, 18.6,
19.6, 21.7, and 25.8, when the XPRD is collected from about 5 to about 38 degrees 2 0. In
further ments, Form I is characterized by an X-ray powder diffraction pattern, as
measured using Cu K“ radiation, substantially similar to Figure 1. In yet another
ment, Form I is characterized by an endothermic peak having an onset temperature of
about 243°C as measured by differential scanning calorimetry in which the temperature is
scanned at about 10°C per minute. The present application also es for a method for
ing crystal Form I of the benzimidazolyl urea compound comprising crystallizing or
precipitating the compound of formula (I) from a solvent system comprising methylene
chloride, methanol, or a combination thereof.
The present application also provides for solid hydrochloride salts of the
benzimidazolyl urea compound. In one embodiment, the solid hydrochloride salt is Form II
solid. In one ment, Form II hydrochloride salt of the present application may be
characterized by an X-ray powder diffraction pattern (XPRD) comprising at least three
approximate peak positions (degrees 2 0 :: 0.2) when measured using Cu K“ radiation,
ed from the group consisting of 7.0, 9.1, 11.5, 12.3, 12.4, 13.5, 16.4, 17.2, 17.9, 18.2,
19.0, 19.5, 20.6, 20.9, 22.4, 23.0, 23.5, 24.0, 24.5, 26.0, 26.5, 27.1, 27.4, 28.5, 29.4, 30.8,
33.0, when the XPRD is ted from about 5 to about 38 degrees 2 0. In a further
embodiment, Form II hloride salt of the present application may be characterized by
an X-ray powder diffraction n (XPRD) comprising at least three approximate peak
positions (degrees 2 0 :: 0.2) when ed using Cu K0, radiation, selected from the group
consisting of 7.0, 9.1, 11.5, 12.3, 12.4, 16.4, 17.9, 19.5, 24.0, and 29.4, when the XPRD is
collected from about 5 to about 38 degrees 2 0. In certain embodiments, Form 11
hydrochloride salt of the present application may be characterized by an X-ray powder
diffraction pattern (XPRD) comprising at least three approximate peak positions es 2 0
:: 0.2) when measured using Cu K0, radiation, selected from the group consisting of 7.0, 9.1,
11.5, 19.5, and 24.0, when the XPRD is collected from about 5 to about 38 degrees 2 0. In
further embodiments, Form II hydrochloride salt of the present application may be
characterized by an X-ray powder diffraction pattern, as measured using Cu K“ radiation,
substantially similar to Figure 4. The present application also provides for a method for
preparing solid hydrochloride salt of the idazolyl urea compound comprising
suspending a solid free base of the benzimidazolyl urea in an acidic solvent system
comprising acetonitrile or water.
In another embodiment, the solid hydrochloride salt is Form III solid. In one
embodiment, Form III hydrochloride salt of the present application may be characterized by
an X-ray powder diffraction pattern (XPRD) comprising at least three approximate peak
positions es 2 0 :: 0.2) when measured using Cu K0, radiation, selected from the group
consisting of6.9, 9.1, 11.0, 11.7, 12.3, 15.8, 16.9, 18.1, 18.9, 19.8, 20.9, 22.7, 23.4, 24.1,
24.8, 25.3, 27.7, 28.5, 29.5, and 31.4, when the XPRD is collected from about 5 to about 38
degrees 2 0. In certain embodiments, Form III hydrochloride salt of the present application
may be characterized by an X-ray powder diffraction pattern (XPRD) comprising at least
three approximate peak positions (degrees 2 0 :: 0.2) when measured using Cu K“ ion,
selected from the group consisting of 6.9, 9.1, 11.7, 18.1, 18.9, 19.8, 23.4, and 24.8, when the
XPRD is ted from about 5 to about 38 degrees 2 0. In r embodiments, Form III
hydrochloride salt of the present application may be characterized by an X-ray powder
diffraction pattern, as measured using Cu K“ radiation, substantially similar to Figure 7. The
present application also provides a method for preparing solid Form III of the benzimidazolyl
urea compound comprising suspending a solid free base of the benzimidazolyl urea in an
acidic solvent system comprising one or more ethereal ts and water.
The present application also provides an amorphous Form IV of the mesylate salt
of the benzimidazolyl urea compound. In one embodiment, Form IV may be characterized
by an X-ray powder diffraction pattern (XPRD) using Cu K“ radiation characterized by a
broad halo with no discernable diffraction peak.
PTION OF FIGURES
Figure 1 shows an X-ray powder diffraction pattern of solid Form I of the
benzimidazolyl urea nd (free base).
Figure 2 shows a DSC thermogram of solid Form I of the benzimidazolyl urea
compound.
Figure 3 shows a TGA thermogram of solid Form I of the benzimidazolyl urea
compound.
Figure 4 shows an X-ray powder diffraction pattern of solid Form II of the
hydrochloride salt of the benzimidazolyl urea compound.
Figure 5 shows a DSC thermogram of solid Form II of the benzimidazolyl urea
compound.
Figure 6 shows a TGA gram of solid Form II of the idazolyl urea
compound
Figure 7 is an X-ray powder diffraction pattern of solid Form III of the
hydrochloride salt of the benzimidazolyl urea compound.
Figure 8 shows a DSC gram of solid Form III of the hydrochloride salt of
the idazolyl urea compound.
Figure 9 is a TGA (thermal gravimetric analysis) thermogram of solid Form III of
the benzimidazolyl urea compound.
Figure 10 is an X-ray powder diffraction pattern of amorphous Form IV of the
mesylate salt of the benzimidazolyl urea compound.
Figure 11 shows a DSC thermogram of amorphous Form IV of mesylate salt of
the benzimidazolyl urea compound.
Figure 12 is a 1H-NMR of the mesylate salt of the benzimidazolyl urea compound.
DETAILED DESCRIPTION
The present application is directed to novel ntially pure solid forms of
(R)- l -ethyl-3 - [5 -[2-( 1 -hydroxy- l -methyl-ethyl)pyrimidin-5 -yl] [(2R)—tetrahydrofuran
yl]—lH—benzimidazol—2—yl]urea (“the benzimidazolyl urea compound”).
One aspect of the present application is a novel solid Form I of the benzimidazolyl
urea compound (free base). In one aspect, the present application provides a process for
preparing solid Form I of the benzimidazolyl urea compound.
A substantially pure Form I (free base) crystalline solid form of the
benzimidazolyl urea compound may be ed from amorphous or crystalline compound
by ting the compound with a polar t such as acetonitrile, methylene chloride,
methanol, ethanol, or water, or combinations thereof. The benzimidazolyl urea compound
may be contacted with the solvent either by saturating a on of the benzimidazolyl urea
compound in the solvent at ambient temperature and allowing the mixture to stand for an
extended period of time (for example, ght). atively, the benzimidazolyl urea
compound may be dissolved in the solvent at ed temperature, for example, at reflux,
followed by cooling the solution to room temperature or below and isolating solid Form I.
In one ment of the process, a substantially pure crystalline solid Form I of
the benzimidazolyl urea compound may be prepared from amorphous or crystalline of the
compound by preparing a saturated on of the compound in a polar solvent at room
temperature and isolating Form I which results. In practice this can be accomplished by
dissolving a sufficient amount of the benzimidazolyl urea compound in the solvent at
elevated temperature (up to reflux) such that when the solution is allowed to cool to room
ature a saturated solution is ed, from which Form 1 precipitates and can be
isolated. In one embodiment, a t for the preparation of Form 1 is CHzClz or MeOH or
mixtures thereof. Isolation of the resulting solid es Form 1.
The solid Form 1 of the benzimidazolyl urea compound (free base) may be
identified by the following characteristics: a melt endotherm with an extrapolated onset of
about 243°C as determined by differential scanning calorimetry using 10°C per minute scan
rate; and an X-ray powder ction pattern essentially as shown in Table 1 and Figure 1
wherein the XRPD patterns were measured using a powder ctometer ed with a
Cu X—ray tube source. The sample was illuminated with Cu Km radiation and XRPD data
were collected from about 0 to about 40° 20. A person skilled in the art would recognize that
relative intensities of the XPRD peaks may significantly vary depending on the ation of
the sample under test and on the type and setting of the instrument used, so that the intensities
in the XPRD traces included herein are to such extent illustrative and are not ed to be
used for absolute comparisons.
Figure 1 is an X-ray powder diffraction pattern of solid Form 1 of the
benzimidazolyl urea compound collected from about 5 to about 38 degrees 2 0. The peaks
corresponding to X-ray powder diffraction pattern having a ve intensity greater than or
equal to 5% are listed in Table 1.
Figure 2 shows a DSC thermogram of solid Form 1 of the benzimidazolyl urea
compound exhibiting an endotherm with an onset transition at about 243°C. A person skilled
in the art would recognize that the peak and onset temperatures of the endotherms may vary
depending on the experimental conditions. Data in Figure 2 were collected equilibrating a
1.8 mg sample of the solid Form 1 at about 35°C for about 10 minutes. During the data
collection period, the temperature was increased at a rate of about 10°C per minute.
Figure 3 is a TGA (thermal gravimetric analysis) thermogram of solid Form 1
of the benzimidazolyl urea compound exhibiting an initial weight loss of about 35% percent
in the 50 to 260°C temperature range. Data in Figure 3 were collected equilibrating a 0.87
mg sample of solid Form 1 at about 35°C for about 10 minutes. During the data collection
period, the temperature was increased at a rate of about 10°C per minute. While applicants
do not wish to be held to a particular explanation of the erm in the DSC and weight
loss in the TGA, it appears that the transition with large peak in the DSC is due to a melting
transition coupled with degradation of the material as suggested by the weight loss in the
TGA.
In one embodiment, the present invention provides a solid compound of
formula (I):
N \ N
NH O
or salts thereof.
In another embodiment, the solid is a solid Form I free base.
In another ment, the solid Form I is characterized by an X-ray powder
diffraction pattern (XPRD) comprising at least three approximate peak positions (degrees 2 0
:: 0.2) when measured using Cu K, radiation, selected from the group consisting of 9.3, 11.7,
12.4, 13.8, 14.6, 16.0, 16.2, 16.7, 18.6, 18.9, 19.6, 20.2, 20.5, 21.3, 21.7, 22.7, 23.9, 24.5,
24.9, 25.8, 26.7, 27.9, 28.1, 28.4, 30.4, 33.5, and 37.4, when the XPRD is collected from
about 5 to about 38 degrees 2 0.
In another embodiment, the solid Form I is characterized by an X-ray powder
diffraction pattern (XPRD) comprising at least three approximate peak positions (degrees 2 0
:: 0.2) when measured using Cu K, radiation, selected from the group consisting of 9.3, 16.7,
18.6, 19.6, 21.7, and 25.8, when the XPRD is ted from about 5 to about 38 degrees 2 0.
In another ment, the solid Form I is characterized by an X-ray powder
diffraction pattern, as measured using Cu K“ radiation, substantially similar to Figure 1.
In another embodiment, the solid Form I is further characterized by an
endothermic peak having an onset temperature of about 243°C as ed by differential
scanning metry in which the temperature is scanned at about 10°C per minute.
In another ment, the t invention es a method for preparing
crystal Form I of the compound of formula (I) comprising precipitating the compound of
WO 97270
formula (I) from a solvent system comprising methylene chloride, methanol, ethanol, or
combinations thereof.
Table 1. XRPD pattern peaks for solid Form I of the benzimidazolyl urea compound
[°29] W1]
1 91
2 28
3 10
4 5
l6
6 21
7 23
8 81
n— 100
In one aspect, the t application provides crystal Form II of the hydrochloric
acid addition salt of the benzimidazolyl urea compound. In one embodiment, the present
application provides a process for preparing solid Form II of the benzimidazolyl urea
compound. The pharmaceutically acceptable hydrochloric acid on salt of the
benzimidazolyl urea compound may be ed by any method known to those skilled in the
art. For example, gaseous hydrochloric acid may be bubbled through a solution of the
benzimidazolyl urea nd until a mono acid addition salt of the compound is prepared.
In one embodiment, the hydrochloric acid addition salt of the benzimidazolyl urea compound
may precipitate out. In other embodiments, the acid addition salt may be isolated from the
reaction mixture by modifying the solubility of the salt in the solvent. For example,
removing some or all of the solvent or lowering the mixture temperature may reduce the
solubility of the hloride salt of the benzimidazolyl urea compound and the salt
precipitate. Alternatively, adding a second solvent to the mixture may precipitate the salt.
In one embodiment, the benzimidazolyl urea compound of the t
application is suspended in a polar solvent. In a further ment, the polar solvent is
acetonitrile. In this embodiment, the idazolyl urea compound of the present
application is suspended in acetonitrile at room temperature and a stoichoimetric amount of
an aqueous HCl solution is added. The sion is kept in a closed container while ng
gently until it equilibrates and the benzimidazolyl urea compound is converted to the
corresponding acid addition salt. In some ments, it may take anywhere from a few
minutes to a few days for the free base sion to be converted to the acid addition salt.
The salt may be recovered by filtering the suspension to obtain a white solid, which may be
dried at room temperature under vacuum for several hours.
Solid Form II of the hydrochloride salt of the benzimidazolyl urea nd
may be identified by an X-ray powder diffraction pattern essentially as shown in Table 2 and
Figure 4 wherein the XRPD patterns were measured using a powder diffractometer equipped
with a Cu X—ray tube source. The sample was illuminated with Cu Kou radiation and XRPD
data were collected from about 5 to about 400 20. A person skilled in the art would recognize
that relative intensities of the XPRD peaks may significantly vary depending on sample
ation.
Figure 4 is an X-ray powder diffraction pattern of solid Form II of the
hydrochloride salt of the benzimidazolyl urea compound collected from about 0 to about 40
degrees 2 0. The peaks ponding to X—ray powder diffraction pattern having a relative
intensity greater than or equal to 5% are listed in Table 2.
In one embodiment, the present invention provides a hydrochloric acid salt of
the compound of formula (I):
N \ N
NH 0
) a).
In another embodiment, the hydrochloride salt is in a solid form.
In r embodiment, the hydrochloride salt is a solid Form II.
In another embodiment, the solid Form II is characterized by an X-ray powder
diffraction pattern (XPRD) comprising at least three approximate peak positions (degrees 2 0
:: 0.2) when measured using Cu K0, radiation, selected from the group consisting of 7.0, 9.1,
11.5, 12.3, 12.4, 13.5, 16.4, 17.2, 17.9, 18.2, 19.0, 19.5, 20.6, 20.9, 22.4, 23.0, 23.5, 24.0,
24.5, 26.0, 26.5, 27.1, 27.4, 28.5, 29.4, 30.8, 33.0, when the XPRD is ted from about 5
to about 38 degrees 2 0.
In another embodiment, the solid Form II is characterized by an X-ray powder
diffraction pattern (XPRD) sing at least three approximate peak positions (degrees 2 0
:: 0.2) when measured using Cu K0, radiation, selected from the group consisting of 7.0, 9.1,
11.5, 12.3, 12.4, 16.4, 17.9, 19.5, 24.0, and 29.4, when the XPRD is collected from about 5 to
about 38 degrees 2 0.
In another embodiment, the solid Form II is characterized by an X-ray powder
diffraction pattern (XPRD) comprising at least three approximate peak ons (degrees 2 0
:: 0.2) when measured using Cu K0, radiation, selected from the group consisting of 7.0, 9.1,
11.5, 19.5, and 24.0, when the XPRD is collected from about 5 to about 38 degrees 2 0.
In another ment, the solid Form II is characterized by an X-ray powder
diffraction n, as measured using Cu K“ radiation, substantially similar to Figure 4.
In another embodiment, the present invention es a method for preparing
the solid Form II comprising suspending a solid free base of the benzimidazolyl urea in an
acidic solvent system comprising acetonitrile or water.
Table 2. XRPD pattern peaks for solid Form 11 of the benzimidazolyl urea compound
Peak No. Position Relative
[°2 0] Intensi []%
123483
12.4346
13.4801
16.3614
17.9001
18.1737
19.0475
26. 5376 9
26 28.4887 14
27 29.3904 18
28 30.8478 6
29 32.9868 5
Solid Form 111 of the hloride salt of the benzimidazolyl urea compound
may be identified by an X-ray powder diffraction pattern essentially as shown in Table 3 and
Figure 7 n the XRPD patterns were measured using a powder diffractometer equipped
with a Cu X—ray tube source. The sample was illuminated with Cu Kou radiation and XRPD
data were collected from about 5 to about 400 20. A person skilled in the art would recognize
that relative intensities of the XPRD peaks may significantly vary depending on sample
orientation.
Figure 5 shows a DSC thermogram of solid Form 11 of the hydrochloride salt
of the idazolyl urea compound exhibiting an endotherm with an onset transition at
about 216°C. A person skilled in the art would recognize that the peak and onset
temperatures of the endotherms may vary depending on the experimental conditions. Data in
Figure 5 were collected equilibrating a 1.26 mg sample of the solid Form II at about 35°C for
about 10 minutes. During the data collection , the temperature was increased at a rate
of about 10°C per minute.
Figure 6 is a TGA (thermal gravimetric analysis) thermogram of solid Form II
of the idazolyl urea compound ting an initial weight loss of about 22% percent
in the 50 to 230°C temperature range. Data in Figure 6 were collected equilibrating a 1.82
mg sample of solid Form II at about 35°C for about 10 minutes. During the data collection
period, the temperature was increased at a rate of about 10°C per minute. While applicants
do not wish to be held to a particular explanation of the endotherm in the DSC and weight
loss in the TGA, it appears that the tion with large peak in the DSC is due to a melting
transition coupled with degradation of the material as suggested by the weight loss in the
TGA.
Figure 7 is an X-ray powder diffraction pattern of solid Form III of the
hydrochloride salt of the benzimidazolyl urea compound collected from about 5 to about 40
s 2 0. The peaks corresponding to X—ray powder diffraction pattern having a relative
intensity greater than or equal to 5% are listed in Table 3.
In one embodiment, the present invention provides a solid compound, wherein
said hydrochloric salt of nd of formula (I) is a solid Form III.
In another embodiment, the solid Form III is terized by an X-ray
powder diffraction n (XPRD) comprising at least three approximate peak positions
(degrees 2 0 :: 0.2) when measured using Cu K0, radiation, selected from the group consisting
of6.9, 9.1, 11.0,11.7,12.3,15.8, 169,181, 18.9, 19.8, 20.9, 22.7, 23.4, 24.1, 24.8, 25.3,
27.7, 28.5, 29.5, and 31.4, when the XPRD is collected from about 5 to about 38 degrees 2 0.
In another embodiment, the solid Form III is characterized by an X-ray
powder diffraction pattern (XPRD) comprising at least three imate peak positions
(degrees 2 0 :: 0.2) when measured using Cu K0, radiation, selected from the group consisting
of 6.9, 9.1, 11.7, 18.1, 18.9, 19.8, 23.4, and 24.8, when the XPRD is ted from about 5 to
about 38 degrees 2 0.
In another ment, the solid Form III is characterized by an X-ray
powder diffraction pattern, as measured using Cu K“ radiation, substantially similar to Figure
In another embodiment, the present invention provides a method for preparing
solid Form 111 comprising suspending a solid free base of the benzimidazolyl urea in an
acidic solvent system comprising one or more ethereal solvents and water.
Table 3. XRPD pattern peaks for solid Form 111 of the benzimidazolyl urea compound
Peak Relative Intensity
N0. 0] [%]
6.8885 17. 17
3 9.117
4 10.9885
11.7157
6 7
9 15.7808
11 16.8739
12 18.1446
13 18.936
-14—
-15—
-16—
-17—
-18—
-19—
-20—
-23—
-24—
-25—
26 31.4273 6.34
Figure 8 shows a DSC thermogram of solid Form 111 of the hydrochloride salt
of the benzimidazolyl urea compound exhibiting a melting endotherm with an onset transition
at about 214°C. A person skilled in the art would recognize that the peak and onset
temperatures of the endotherms may vary ing on the experimental conditions. Data in
Figure 8 were collected equilibrating a 1.03 mg sample of the solid form at about 35°C for
about 10 minutes. During the data collection period, the ature was increased at a rate
of about 10°C per .
Figure 9 is a TGA (thermal gravimetric analysis) thermogram of solid Form
111 of the benzimidazolyl urea compound exhibiting an initial weight loss of about 28%
percent in the 50 to 260°C temperature range. Data in Figure 9 were ted equilibrating a
3.71 mg sample of the solid form at about 35°C for about 10 minutes. During the data
collection period, the temperature was sed at a rate of about 10°C per minute. While
applicants do not wish to be held to a particular explanation of the endotherm in the DSC and
weight loss in the TGA, it appears that the transition with large peak in the DSC is due to a
melting transition coupled with degradation of the material as ted by the weight loss in
the TGA.
In one embodiment, solid Form III of the hydrochloride salt of the
benzimidazolyl urea compound may be ed from a mixture of an ethereal solvent and
aqueous HCl. In one embodiment, the ethereal solvent is THF, -tert—butyl ether
(MTBE), or mixtures thereof. In a particular embodiment, the benzimidazolyl urea
compound may be suspended in an ethereal solvent followed by on of a stoichiometric
amount of HCl. Additional ethereal solvent may be added and the suspension may be
allowed to equilibrate for a certain period of time enough to convert the free base to the
corresponding HCl addition salt. It may take less than an hour to several hours for the
equilibration to be completed. In certain embodiments, the suspension may be allowed to
equilibrate for up to 24 hours before collecting the white solid. The solid may be ted
using any method known to those skilled in the art. The solid may be dried under vacuum for
several hours.
In another aspect, the present application provides an ous Form IV of the
mesylate salt of the benzimidazolyl urea compound. In one embodiment, the present
application provides a process for preparing amorphous Form IV of the mesylate salt of the
benzimidazolyl urea compound. A pharmaceutically acceptable esulphonic acid salt
of the benzimidazolyl urea compound may be prepared by any method known to those d
in the art. For example, a solution of methanesulphonic acid may be added to a solution of
the benzimidazolyl urea compound until a mono acid addition salt of the compound is
prepared.
The mesylate salt of the benzimidazolyl urea compound may be converted to an
amorphous solid Form IV using any method known to those d in the art. The
ous idazolyl urea compound mesylate salt may be characterized by the
absence of a diffraction pattern characteristic of a crystalline form. The X-ray powder
diffraction of a partially amorphous benzimidazolyl urea compound mesylate salt may still
lack es characteristic of a crystal form because the diffraction peaks from the crystalline
portion of the sample may be too weak to be observable over the noise. Figure 10 is an X—ray
powder diffraction pattern of an amorphous Form IV of the mesylate salt of the
benzimidazolyl urea compound.
In one ment, the amorphous mesylate salt of the benzimidazolyl urea
compound may be prepared by spray drying a solution of the salt in appropriate t.
Spray drying is well known in the art and is often used to dry thermally-sensitive materials
such as pharmaceutical drugs. Spray drying also provides consistent particle distribution that
can be reproduced fairly well. Any gas may be used to dry the powder although air is
ly used. If the material is sensitive to air, an inert gas, such nitrogen or argon, may
be used. Any method that converts a solution, slurry, suspension or an emulsion of the salt to
produce a solid powder may be suitable for preparing the amorphous Form IV of the
mesylate salt of the benzimidazolyl urea compound. For e, freeze drying, drum
drying, or pulse conversion drying may be used to produce an amorphous mesylate salt of the
benzimidazolyl urea compound.
In one embodiment, the t invention es a solid compound of formula
(I), wherein said solid is an amorphous mesylate salt of Form IV.
In another embodiment, the solid amorphous mesylate salt Form IV is
characterized by an X-ray powder diffraction pattern (XPRD) using Cu K“ radiation,
characterized by a broad halo with no discernable diffraction peak.
In one embodiment, a solution of the idazolyl urea compound in a polar
solvent may be spray dried using a nanospray dryer equipped a condenser.
Figure 11 shows a DSC thermogram of amorphous Form IV of the mesylate salt
of the idazolyl urea compound. Data in Figure 11 were collected equilibrating a 1.6
mg sample of the amorphous material at about 35°C for about 10 minutes. During the data
collection period, the ature was increased at a rate of about 10°C per minute.
It is to be understood that solid Forms I, II and III and ous solid Form IV
of the idazolyl urea compound or its salts, in addition to having the XRPD, DSC,
TGA and other teristics described herein, may also possess other characteristics not
described, such as but not limited to the presence of water or one or more solvent molecules.
X-Ray Powder Diffraction (XRPD): The XRPD pattern of the crystalline forms
were recorded at room temperature in reflection mode using a Bruker D8 Discover system
equipped with a sealed tube source and a Hi—Star area detector (Bruker AXS, Madison, WI).
The X-Ray generator was operating at a tension of 40 kV and a current of 35 mA. The
powder sample was placed on a Si zero—background wafer. Two frames were registered with
an exposure time of 120 s each. The data were subsequently integrated over the range of 3°—
410 2 with a step size of 0.020 and merged into one continuous pattern.
X-Ray Powder Diffraction (XRPD) for amorphous forms: The XRPD pattern
of the amorphous solid form was recorded at room temperature in reflection mode using a
Bruker D8 Advance system equipped with a Vantec—l on sensitive detector (Bruker
AXS, Madison, WI). The X-Ray generator was operating at a tension of 40 kV and a current
of 45 mA. The powder sample was placed on a Si zero—background holder, spinning at 15
rpm during the experiment in a continuous mode using variable slit at the detector. Data was
collected from 3 to 40 degrees with 0.0144653 degree increments (0.25s/step).
Differential Scanning Calorimetry (DSC): DSC was performed on a sample of
the material using a DSC Q2000 differential scanning calorimeter (TA Instruments, New
Castle, DE). The instrument was calibrated with indium. A sample of approximately 1-2 mg
was weighed into an aluminum pan that was crimped using lids with either no pin-hole or
pin—hole lids. The DSC samples were d from 30°C to temperatures ted in the
plots at a heating rate of 10°C/min with 50 mL/min nitrogen flow. The samples run under
modulated DSC (MDSC) were ted + and — 1°C every 60s with ramp rates of 2 or 3
C/min.
Data was collected by Thermal Advantage Q SeriesTM re and ed by
Universal Analysis 2000 software (TA ments, New , DE).
Thermogravimetric analysis (TGA): A Model Q5000 Thermogravimetric Analyzer (TA
Instruments, New Castle, DE) was used for TGA measurement. Typically, approximately 3—
mg of the sampleswere scanned from 30°C to temperatures indicated on the plots at a
g rate of 10°C/min. Data was collected by Thermal age Q SeriesTM software
and analyzed by sal Analysis 2000 software (TA Instruments, New Castle, DE).
The present invention also provides a pharmaceutical composition comprising a
compound of formula (I), or a pharmaceutically acceptable salt thereof, and a
pharmaceutically acceptable carrier, adjuvant, or vehicle.
The present invention also provides a method of controlling, treating or reducing
the advancement, severity or effects of a nosocomial or a non-nosocomial bacterial infection
in a patient, comprising administering to said patient a pharmaceutical composition
comprising a compound of formula (I), or a ceutically acceptable salt f.
In another embodiment, the present invention provides a a method of controlling,
treating or reducing the advancement, severity or effects of a nosocomial or a non-
nosocomial bacterial infection in a patient, comprising administering to said patient a
pharmaceutical composition comprising a compound of formula (I), or a pharmaceutically
acceptable salt thereof, wherein the bacterial infection is characterized by the presence of one
or more of Streptococcus pneumoniae, Staphylococcus epidermidis, Enterococcusfaecalis,
Staphylococcus aureus, Clostridium diflicile, Moraxella catarrhalis, Neisseria gonorrhoeae,
Neisseria meningitidis, Mycobacterium avium complex, Mycobacterium abscessus,
Mycobacterium kansasii, Mycobacterium ns, Chlamydophila pneumoniae, Chlamydia
trachomatis, hilus influenzae, Streptococcus pyogenes or B—haemolytic streptococci.
In another embodiment, the present invention provides a method of controlling,
treating or reducing the advancement, severity or effects of a nosocomial or a non-
nosocomial ial infection in a patient, comprising administering to said patient a
pharmaceutical ition comprising a compound of formula (I), or a pharmaceutically
acceptable salt thereof, n the bacterial infection is selected from one or more of the
following: upper respiratory infections, lower atory infections, ear infections,
pleuropulmonary and bronchial ions, complicated urinary tract infections,
uncomplicated urinary tract infections, intra-abdominal infections, cardiovascular infections,
a blood stream infection, sepsis, bacteremia, CNS infections, skin and soft tissue infections,
GI infections, bone and joint infections, l infections, eye infections, or granulomatous
infections, uncomplicated skin and skin structure infections (uSSSI), complicated skin and
skin structure infections (cSSSI), catheter infections, pharyngitis, tis, otitis externa,
otitis media, bronchitis, empyema, pneumonia, ity-acquired bacterial pneumoniae
(CABP), hospital-acquired pneumonia (HAP), hospital-acquired bacterial nia,
ventilator-associated pneumonia (VAP), diabetic foot infections, vancomycin ant
cocci infections, cystitis and pyelonephritis, renal calculi, prostatitis, nitis,
complicated intra-abdominal infections (cIAI) and other inter-abdominal infections, dialysis-
associated peritonitis, visceral abscesses, endocarditis, myocarditis, rditis, transfusion—
associated , meningitis, encephalitis, brain abscess, osteomyelitis, tis, genital
ulcers, urethritis, vaginitis, cervicitis, gingivitis, conjunctivitis, keratitis, endophthalmitisa, an
infection in cystic fibrosis patients or an infection of febrile neutropenic patients.
In another embodiment, the bacterial infection is ed from one or more of the
following: community-acquired bacterial pneumoniae (CABP), hospital-acquired pneumonia
(HAP), hospital-acquired bacterial nia, ventilator-associated pneumonia (VAP),
emia, diabetic foot infections, catheter infections, uncomplicated skin and skin
structure infections (uSSSI), complicated skin and skin structure infections ),
vancomycin resistant enterococci infections or osteomyelitis.
According to r embodiment, the invention provides a method of
decreasing or inhibiting bacterial quantity in a biological sample. This method comprises
contacting said biological sample with a compound of formula (I) or a pharmaceutically
acceptable salt thereof.
The term "biological sample", as used herein, includes cell cultures or extracts
f; biopsied material obtained from a mammal or extracts thereof; and blood, saliva,
urine, feces, semen, tears, or other body fluids or extracts f. The term gical
sample" also includes living organisms, in which case "contacting a nd of this
invention with a biological " is synonymous with the term "administering said
compound or ition sing said compound) to a mammal".
The gyrase and/or topoisomerase IV inhibitors of this invention, or
ceutical salts thereof, may be formulated into pharmaceutical compositions for
administration to animals or humans. These pharmaceutical compositions effective to treat or
prevent a bacterial infection which comprise the gyrase and/or topoisomerase IV inhibitor in
an amount sufficient to measurably decrease bacterial quantity and a pharmaceutically
acceptable carrier, are another embodiment of the present ion. The term "measurably
decrease bacterial quantity", as used herein means a measurable change in the number of
bacteria between a sample ning said inhibitor and a sample containing only bacteria.
According to another embodiment, the methods of the present invention are useful
to treat patients in the veterinarian field including, but not limited to, zoo, laboratory, human
companion, and farm animals ing primates, rodents, reptiles and birds. Examples of
said animals include, but are not limited to, guinea pigs, hamsters, gerbils, rat, mice, rabbits,
dogs, cats, horses, pigs, sheep, cows, goats, deer, rhesus monkeys, monkeys, tamarinds, apes,
baboons, gorillas, chimpanzees, orangutans, gibbons, ostriches, chickens, s, ducks, and
geese.
The term osocomial infections" is also referred to as community acquired
infections.
In another embodiment, the bacterial infection is characterized by the presence of
one or more of Streptococcus pneumoniae, Enterococcusfaecalis, or Staphylococcus aureus.
In another embodiment, the bacterial infection is characterized by the presence of
one or more of E. coli, Moraxella catarrhalis, or Haemophilus influenzae.
In another ment, the ial infection is characterized by the presence of
one or more of Clostridium diflicile, ria gonorrhoeae, Neisseria meningitidis,
Mycobacterium avium complex, cterium abscessus, Mycobacterium kansasii,
cterium ulcerans, Chlamydophila pneumoniae and Chlamydia tracomatis.
In another embodiment, the bacterial infection is characterized by the presence of
one or more of Streptococcus pneumoniae, Staphylococcus epidermidis, Enterococcus
faecalis, Staphylococcus aureus, Clostridium diflicile, Moraxella catarrhalis, ria
gonorrhoeae, Neisseria meningitidis, Mycobacterium avium complex, Mycobacterium
abscessus, Mycobacterium kansasii, Mycobacterium ulcerans, Chlamydophila pneumoniae,
Chlamydia trachomatis, Haemophilus influenzae, Streptococcus pyogenes or fl-haemolytic
streptococci.
In some embodiments, the bacterial infection is characterized by the presence of
one or more of Methicillin resistant Staphylococcus aureus, Fluoroquinolone resistant
Staphylococcus aureus, ycin intermediate resistant Staphylococcus aureus, Linezolid
resistant lococcus aureus, Penicillin resistant Streptococcus pneumoniae, Macrolide
resistant ococcus pneumoniae, Fluoroquinolone resistant Streptococcus pneumoniae,
Vancomycin resistant Enterococcusfaecalis, Linezolid ant Enterococcus is,
Fluoroquinolone resistant Enterococcusfaecalis, Vancomycin resistant Enterococcus
faecium, Linezolid resistant Enterococcusfaecium, quinolone ant Enterococcus
faecium, Ampicillin resistant Enterococcusfaecium, Macrolide resistant Haemophilus
nzae, B—lactam resistant Haemophilus nzae, Fluoroquinolone resistant
Haemophilus influenzae, B—lactam resistant lla catarrhalis, Methicillin resistant
Staphylococcus epidermidis, Methicillin resistant Staphylococcus epidermidis, Vancomycin
resistant Staphylococcus epidermidis, quinolone resistant lococcus epidermidis,
Macrolide resistant Mycoplasma niae, lsoniazid resistant Mycobacterium
tuberculosis, Rifampin resistant Mycobacterium tuberculosis, Methicillin resistant Coagulase
negative staphylococcus, Fluoroquinolone resistant Coagulase negative staphylococcus,
Glycopeptide intermediate resistant Staphylococcus aureus, Vancomycin resistant
Staphylococcus aureus, Hetero vancomycin intermediate resistant Staphylococcus aureus,
Hetero vancomycin resistant Staphylococcus , Macrolide-Lincosamide—Streptogramin
resistant Staphylococcus, B—lactam resistant Enterococcus faecalis, B—lactam resistant
Enterococcusfaecium, de resistant Streptococcus pneumoniae, de resistant
Streptococcus pyogenes, Macrolide resistant ococcus pyogenes, Vancomycin resistant
staphylococcus epidermidis, Fluoroquinolone resistant Neisseria gonorrhoeae, Multidrug
Resistant Pseudomonas aeruginosa or Cephalosporin resistant Neisseria gonorrhoeae.
ing to another embodiment, the Methicillin resistant Staphylococci are
selected from illin resistant Staphylococcus aureus, Methicillin resistant
Staphylococcus epidermidis, or Methicillin resistant Coagulase negative staphylococcus.
In some embodiments, a form of a compound of formula (I), or a
pharmaceutically acceptable salt f, is used to treat community acquired MRSA (i.e.,
cMRSA).
In other embodiments, a form of a compound of formula (I), or a pharmaceutically
able salt thereof, is used to treat daptomycin resistant organism including, but not
limited to, Daptomycin resistant Enterococcusfaecium and Daptomycin resistant
Staphylococcus aureus.
] According to another embodiment, the Fluoroquinolone resistant
Staphylococci are selected from Fluoroquinolone resistant Staphylococcus aureus,
Fluoroquinolone resistant lococcus epidermidis, or Fluoroquinolone resistant
ase negative staphylococcus.
ing to another embodiment, the Glycopeptide ant Staphylococci
are selected from Glycopeptide intermediate resistant lococcus aureus, Vancomycin
resistant Staphylococcus aureus, Vancomycin intermediate resistant Staphylococcus ,
Hetero vancomycin intermediate resistant Staphylococcus aureus, or Hetero vancomycin
resistant Staphylococcus aureus.
According to another embodiment, the Macrolide-Lincosamide-Streptogramin
resistant Staphylococci is Macrolide—Lincosamide—Streptogramin resistant Staphylococcus
aureus.
According to another embodiment, the Linezolid resistant Enterococci are
selected from Linezolid ant Enterococcusfaecalis, or Linezolid resistant Enterococcus
faecium.
According to another ment, the Glycopeptide resistant Enterococci are
selected from Vancomycin resistant Enterococcusfaecium or ycin resistant
Enterococcusfaecalis.
According to another embodiment, the B-lactam resistant Enterococcus
is is B-lactam resistant Enterococcusfaecium.
According to r embodiment, the Penicillin resistant Streptococci is
Penicillin resistant Streptococcus pneumoniae.
According to another embodiment, the Macrolide resistant Streptococci is
Macrolide resistant Streptococcus pneumonia.
According to another embodiment, the Ketolide resistant Streptococci are
selected from Macrolide resistant Streptococcus pneumoniae and Ketolide resistant
Streptococcus pyogenes.
According to another embodiment, the Fluoroquinolone resistant Streptococci
is Fluoroquinolone ant Streptococcus pneumoniae.
According to another embodiment, the am resistant hilus is [3-
lactam resistant Haemophilus influenzae.
According to another embodiment, the Fluoroquinolone resistant Haemophilus
is Fluoroquinolone resistant Haemophilus influenzae.
According to another embodiment, the ide resistant Haemophilus is
Macrolide resistant Haemophilus influenzae.
According to another embodiment, the Macrolide resistant Mycoplasma is
Macrolide resistant Mycoplasma pneumoniae.
] According to r embodiment, the lsoniazid resistant Mycobacterium is
zid resistant Mycobacterium tuberculosis.
According to another embodiment, the Rifampin resistant Mycobacterium is
Rifampin resistant Mycobacterium ulosis.
According to another embodiment, the B-lactam resistant Moraxella is [3-
lactam ant Moraxella catarrhalis.
According to another embodiment, the bacterial infection is characterized by
the presence of one or more of the following: Methicillin resistant Staphylococcus aureus,
Fluoroquinolone resistant Staphylococcus aureus, ycin intermediate resistant
Staphylococcus aureus, Linezolid resistant lococcus aureus, Penicillin resistant
Streptococcus pneumoniae, Macrolide resistant Streptococcus pneumoniae, Fluoroquinolone
resistant Streptococcus pneumoniae, Vancomycin ant Enterococcusfaecalis, Linezolid
ant Enterococcusfaecalis, Fluoroquinolone resistant coccus faecalis,
Vancomycin resistant Enterococcus faecium, Linezolid resistant Enterococcusfaecium,
Fluoroquinolone resistant Enterococcusfaecium, Ampicillin resistant Enterococcusfaecium,
Macrolide resistant Haemophilus influenzae, B—lactam resistant Haemophilus influenzae,
Fluoroquinolone ant Haemophilus influenzae, B—lactam resistant Moraxella catarrhalis,
illin ant Staphylococcus epidermidis, Methicillin resistant Staphylococcus
epidermidis, ycin resistant Staphylococcus epidermidis, Fluoroquinolone resistant
Staphylococcus epidermidis, Macrolide resistant asma pneumoniae, Isoniazid
resistant Mycobacterium tuberculosis, Rifampin resistant Mycobacterium tuberculosis,
Fluoroquinolone resistant Neisseria gonorrhoeae or Cephalosporin resistant Neisseria
gonorrhoeae.
According to r embodiment, the ial infection is characterized by
the ce of one or more of the following: Methicillin resistant Staphylococcus aureus,
Methicillin resistant Staphylococcus epidermidis, Methicillin resistant Coagulase negative
staphylococcus, Fluoroquinolone resistant Staphylococcus aureus, Fluoroquinolone resistant
lococcus midis, Fluoroquinolone resistant Coagulase negative staphylococcus,
Vancomycin resistant Staphylococcus aureus, Glycopeptide intermediate resistant
Staphylococcus aureus, Vancomycin resistant Staphylococcus aureus, Vancomycin
intermediate resistant Staphylococcus aureus, Hetero vancomycin intermediate resistant
Staphylococcus aureus, Hetero vancomycin resistant Staphylococcus aureus, Vancomycin
resistant coccusfaecium, Vancomycin resistant Enterococcusfaecalis, Penicillin
resistant Streptococcus pneumoniae, Macrolide resistant Streptococcus pneumoniae,
quinolone resistant Streptococcus pneumoniae, Macrolide resistant Streptococcus
pyogenes, or B—lactam resistant Haemophilus nzae.
According to another embodiment, the bacterial infection is characterized by
the ce of one or more of the following: Methicillin resistant Staphylococcus aureus,
Vancomycin resistant Enterococcusfaecium, Vancomycin resistant Enterococcus faecalis,
Vancomycin resistant Staphylococcus aureus, Vancomycin intermediate ant
Staphylococcus aureus, Hetero vancomycin intermediate resistant Staphylococcus aureus,
Hetero vancomycin resistant Staphylococcus aureus, Multidrug Resistant Pseudomonas
aeruginosa, lsoniazid resistant Mycobacterium tuberculosis, and in resistant
Mycobacterium ulosis.
Pharmaceutically acceptable salts of the compounds of this invention include
those derived from ceutically acceptable inorganic and organic acids and bases.
Examples of suitable acid salts include acetate, adipate, alginate, aspartate, benzoate,
benzenesulfonate, bisulfate, butyrate, citrate, rate, rsulfonate,
cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, formate, te,
glucoheptanoate, glycerophosphate, glycolate, lfate, heptanoate, hexanoate,
hydrochloride, hydrobromide, hydroiodide, 2-hydroxyethanesulfonate, lactate, maleate,
malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, palmoate, pectinate,
persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, nate, salicylate, succinate,
sulfate, te, thiocyanate, tosylate and undecanoate. Other acids, such as oxalic, while not
in themselves pharmaceutically acceptable, may be employed in the preparation of salts
useful as intermediates in obtaining the compounds of the invention and their
pharmaceutically acceptable acid on salts.
Salts derived from riate bases include alkali metal (e. g., sodium and
potassium), alkaline earth metal (e. g., magnesium), ammonium and 4 4 salts. This
invention also envisions the quaternization of any basic nitrogen-containing groups of the
nds disclosed herein. Water or oil—soluble or dispersible products may be ed by
such nization.
Pharmaceutical compositions of this invention comprise a compound of
formula (I) or a pharmaceutically acceptable salt thereof and a pharmaceutically acceptable
carrier. Such compositions may ally comprise an additional therapeutic agent. Such
agents include, but are not limited to, an antibiotic, an anti-inflammatory agent, a matrix
metalloprotease inhibitor, a lipoxygenase inhibitor, a cytokine antagonist, an
immunosuppressant, an anti-cancer agent, an anti-viral agent, a cytokine, a growth factor, an
immunomodulator, a prostaglandin or an anti-vascular hyperproliferation compound.
The term "pharmaceutically acceptable carrier" refers to a non-toxic carrier
that may be administered to a patient, together with a compound of this invention, and which
does not destroy the pharmacological activity thereof.
Pharmaceutically acceptable carriers that may be used in the ceutical
compositions of this invention include, but are not limited to, ion exchangers, alumina,
aluminum stearate, in, serum proteins, such as human serum albumin, buffer substances
such as phosphates, glycine, sorbic acid, potassium sorbate, partial glyceride es of
saturated vegetable fatty acids, water, salts or electrolytes, such as protamine sulfate,
disodium en phosphate, potassium hydrogen phosphate, sodium chloride, zinc salts,
colloidal silica, magnesium trisilicate, polyvinyl pyrrolidone, cellulose—based nces,
polyethylene glycol, sodium carboxymethylcellulose, polyacrylates, waxes, polyethylene-
polyoxypropylene—block polymers, wool fat and self—emulsifying drug delivery s
(SEDDS) such as alpha-tocopherol, polyethyleneglycol 1000 ate, or other similar
polymeric delivery matrices.
The term "pharmaceutically effective amoun " refers to an amount effective in
treating or ameliorating a bacterial infection in a patient. The term "prophylactically effective
amount" refers to an amount effective in preventing or substantially lessening a bacterial
infection in a patient.
Depending upon the particular condition, or disease state, to be treated or
prevented, additional therapeutic agents, which are normally administered to treat or prevent
that condition, may be administered together with the inhibitors of this invention. Such
therapeutic agents include, but are not limited to, an antibiotic, an anti-inflammatory agent, a
matrix metalloprotease inhibitor, a lipoxygenase inhibitor, a cytokine nist, an
suppressant, an anti-cancer agent, an iral agent, a ne, a growth factor, an
immunomodulator, a prostaglandin or an anti-vascular hyperproliferation compound.
Theconmmundsofflnsinvenfionrnaybeenufloyedhiaconvenfionminanner
for controlling bacterial infections levels in vivo and for treating diseases or reducing the
ement or severity of effects which are mediated by bacteria. Such s of
treatment, their dosage levels and requirements may be selected by those of ordinary skill in
the art from available methods and techniques.
For example, a compound of this invention may be combined with a
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ive to lessen the severity of that infection or disease.
atively, the compounds of this invention may be used in compositions
and methods for treating or protecting individuals against bacterial infections or diseases over
extended periods of time. In one embodiment, the compounds of this invention may be used
in compositions and methods for treating or protecting individuals against bacterial infections
or diseases over a 1—2 week period. In another ment, the compounds of this invention
may be used in compositions and methods for treating or protecting duals against
bacterial infections or diseases over a 4-8 week period (for e, in the treatment of
patients with or at risk for ping endocarditis or osteomyelitis). In another embodiment,
the compounds of this invention may be used in compositions and methods for treating or
protecting individuals against bacterial ions or es over an 8—12 week period. The
compounds may be employed in such compositions either alone or together with other
nds of this invention in a manner consistent with the conventional utilization of
enzyme inhibitors in pharmaceutical compositions. For example, a compound of this
invention may be combined with pharmaceutically acceptable adjuvants conventionally
employed in vaccines and stered in prophylactically effective amounts to protect
duals over an extended period of time against bacterial infections or diseases.
In some embodiments, compounds of formula (I), or a pharmaceutically
able salt thereof, may be used prophylactically to prevent a bacterial infection. In some
embodiments, compounds of formula (I), or a pharmaceutically able salt thereof, may
be used before, during or after a dental or surgical procedure to t opportunistic
infections such as those encountered in bacterial endocarditis. In other embodiments,
compounds of formula (I), or a pharmaceutically acceptable salt thereof, may be used
prophylactically in dental procedures, including but not limited to extractions, periodontal
procedures, dental implant placements and endodontic surgery. In other ments,
nds of formula (I), or a pharmaceutically acceptable salt thereof, may be used
prophylactically in surgical procedures including but not limited to general surgery,
respiratory surgery (tonsillectomy/adenoidectomy), intestinal surgery (upper GI and
elective small bowel surgery, esophageal sclerotherapy and dilation, large bowel resections,
acute appendectomy), trauma surgery (penetrating abdominal surgery), -urinary tract
surgery (prostatectomy, urethral on, cystoscopy, l or nal hysterectomy,
cesarean section), transplant surgery (kidney, liver, pancreas or kidney transplantation), head
and neck surgery (skin excisions, neck dissections, laryngectomy, head and neck cancer
surgeries, mandibular fractures), orthopaedic surgery (total joint replacement, traumatic open
fractures), vascular surgery (peripheral vascular procedures), cardiothoracic surgery, coronary
bypass surgery, pulmonary resection and neurosurgery.
The term "prevent a bacterial infection" as used herein, unless otherwise
indicated, means the prophylactic use of an antibiotic, such as a gyrase and/or topoisomerase
IV inhibitor of the present invention, to t a bacterial infection. Treatment with a
gyrase and/or topoisomerase IV inhibitor could be done prophylactically to prevent an
infection caused by an organism that is susceptible to the gyrase and/or topoisomerase IV
inhibitor. One general set of conditions where prophylactic treatment could be ered is
when an individual is more vulnerable to infection due to, for example, weakened immunity,
y, , presence of an artificial device in the body (temporary or permanent), an
ical defect, exposure to high levels of bacteria or possible exposure to a e—
causing pathogen. Examples of factors that could lead to weakened immunity include
chemotherapy, radiation therapy, diabetes, advanced age, HIV infection, and transplantation.
An example of an anatomical defect would be a defect in the heart valve that increases the
risk of bacterial endocarditis. Examples of artificial devices include artificial joints, surgical
pins, catheters, etc. Another set of situations where prophylactic use of a gyrase and/or
topoisomerase IV inhibitor might be appropriate would be to prevent the spread of a pathogen
between individuals (direct or ct). A specific example of prophylactic use to prevent
the spread of a pathogen is the use of a gyrase and/or topoisomerase IV inhibitor by
individuals in a healthcare institution (for example a hospital or nursing home).
The compounds of formula (I), or a pharmaceutically acceptable salt f,
may also be co-administered with other antibiotics to increase the effect of therapy or
prophylaxis against various bacterial infections. When the compounds of this invention are
administered in combination therapies with other agents, they may be administered
sequentially or concurrently to the patient. Alternatively, pharmaceutical or lactic
compositions according to this invention comprise a combination of a compound of formula
(I), or a pharmaceutically acceptable salt thereof, and another therapeutic or prophylactic
agent.
In some embodiments, the additional therapeutic agent or agents is an
antibiotic selected from a natural penicillin, a llinase-resistant llin, an
antipseudomonal penicillin, an aminopenicillin, a first generation osporin, a second
generation cephalosporin, a third tion cephalosporin, a fourth generation
cephalosporin, a carbapenem, a cephamycin, a quinolone, a quinolone, an
aminoglycoside, a macrolide, a ketolide, a polymyxin, a tetracycline, a glycopeptide, a
streptogramin, an oxazolidinone, a rifamycin, or a sulfonamide.
In some embodiments, the additional therapeutic agent or agents is an
antibiotic ed from a penicillin, a cephalosporin, a quinolone, an aminoglycoside or an
idinone.
In other ments, the additional therapeutic agents are selected from a
natural penicillin including Benzathine penicillin G, Penicillin G and Penicillin V, from a
llinase-resistant penicillin including Cloxacillin, Dicloxacillin, Nafcillin and Oxacillin,
from a antipseudomonal llin including Carbenicillin, Mezlocillin, Pipercillin,
Pipercillin/tazobactam, Ticaricillin and Ticaricillin/Clavulanate, from an aminopenicillin
including Amoxicillin, Ampicillin and llin/Sulbactam, from a first generation
cephalosporin including Cefazolin, Cefadroxil, Cephalexin and rine, from a second
generation cephalosporin including Cefaclor, Cefaclor-CD, Cefamandole, Cefonacid,
WO 97270
Cefprozil, Loracarbef and Cefuroxime, from a third generation cephalosporin including
Cefdinir, Cefixime, Cefoperazone, Cefotaxime, Cefpodoxime, Ceftazidime, Ceftibuten,
Ceftizoxme and Ceftriaxone, from a fourth generation cephalosporin including Cefepime,
Ceftaroline and Ceftobiprole, from a ycin including Cefotetan and Cefoxitin, from a
carbapenem including Doripenem, Imipenem and Meropenem, from a monobactam including
nam, from a quinolone including Cinoxacin, Nalidixic acid, Oxolininc acid and
Pipemidic acid, from a fluoroquinolone including Besifloxacin, Ciprofloxacin, Enoxacin,
Gatifloxacin, Grepafloxacin, xacin, Lomefloxacin, xacin, Norfloxacin,
cin and Sparfloxacin, from an aminoglycoside including Amikacin, Gentamicin,
Kanamycin, Neomycin, Netilmicin, Spectinomycin, Streptomycin and Tobramycin, from a
macrolide including Azithromycin, Clarithromycin and Erythromycin, from a ketolide
including romycin, from a Tetracycline including Chlortetracycline, Demeclocycline,
Doxycycline, Minocycline and Tetracycline, from a eptide including Oritavancin,
Dalbavancin, Telavancin, Teicoplanin and Vancomycin, from a streptogramin ing
Dalfopristin/quinupristin, from an oxazolidone including Linezolid, from a Rifamycin
including Rifabutin and in and from other antibiotics including bactitracin, colistin,
Tygacil, ycin, chloramphenicol, clindamycin, isoniazid, metronidazole, mupirocin,
polymyxin B, pyrazinamide, trimethoprim/sulfamethoxazole and sulfisoxazole.
In other embodiments, the additional eutic agents are selected from a
natural penicillin including Penicillin G, from a penicillinase-resistant penicillin ing
Nafcillin and Oxacillin, from an antipseudomonal penicillin including Pipercillin/tazobactam,
from an aminopenicillin including Amoxicillin, from a first generation cephalosporin
including exin, from a second generation osporin including Cefaclor, Cefaclor-
CD and Cefuroxime, from a third generation cephalosporin including Ceftazidime and
axone, from a fourth generation cephalosporin including Cefepime, from a carbapenem
including Imepenem, Meropenem, Ertapenem, Doripenem, Panipenem and Biapenem,a
fluoroquinolone including Ciprofloxacin, Gatifloxacin, Levofloxacin and Moxifloxacin, from
an aminoglycoside including Tobramycin, from a macrolide including omycin and
Clarithromycin, from a Tetracycline including Doxycycline, from a glycopeptide including
ycin, from a Rifamycin including Rifampin and from other antibiotics including
isoniazid, pyrazinamide, Tygacil, ycin or trimethoprim/sulfamethoxazole.
In some embodiments, a solid form of a compound of formula (I), or a
pharmaceutically acceptable salt thereof, can be administered for the treatment of a gram
positive infection. In some embodiments, the composition is a solid, liquid (e.g., a
suspension), or an iv (e. g., a form of the a (I) compound, or a pharmaceutically
acceptable salt thereof, is dissolved into a liquid and administered iv) composition. In some
embodiments, the composition including a formula (I) compound, or a pharmaceutically
acceptable salt thereof, is administered in combination with an additional otic agent, for
e, a natural penicillin, a penicillinase-resistant penicillin, an antipseudomonal
penicillin, an aminopenicillin, a first generation cephalosporin, a second generation
cephalosporin, a third generation cephalosporin, a fourth generation cephalosporin, a
carbapenem, a cephamycin, a quinolone, a fluoroquinolone, an aminoglycoside, a macrolide,
a ketolide, a polymyxin, a tetracycline, a glycopeptide, a streptogramin, an oxazolidinone, a
rifamycin, or a sulfonamide. In some embodiments, the composition including a solid form
of a formula (I) compound, or a pharmaceutically acceptable salt f, is stered
orally, and the additional antibiotic agent, for example, a natural penicillin, a penicillinase-
resistant penicillin, an antipseudomonal penicillin, an aminopenicillin, a first generation
cephalosporin, a second generation cephalosporin, a third generation cephalosporin, a fourth
generation cephalosporin, a carbapenem, a cephamycin, a quinolone, a quinolone, an
lycoside, a macrolide, a ketolide, a polymyxin, a tetracycline, a glycopeptide, a
streptogramin, an oxazolidinone, a cin, or a sulfonamide is administered iv.
] In some embodiments, a solid form of a a (I) compound, or a
pharmaceutically acceptable salt f, can be administered for the treatment of a gram
negative infection. In some embodiments, the composition is a solid, liquid (e. g., a
suspension), or an iv (e. g., a form of a formula (I) compound, or a pharmaceutically
acceptable salt thereof, is dissolved into a liquid and administered iv) composition. In some
embodiments the composition ing a formula (I) compound, or a pharmaceutically
acceptable salt thereof, is administered in combination with an additional antibiotic agent,
selected from a: l penicillin, a penicillinase-resistant penicillin, an antipseudomonal
llin, an aminopenicillin, a first generation cephalosporin, a second generation
cephalosporin, a third generation cephalosporin, a fourth generation cephalosporin, a
carbapenem, a cephamycin, a monobactam, a quinolone, a fluoroquinolone, an
aminoglycoside, a macrolide, a ketolide, a polymyxin, tetracycline or a sulfonamide. In some
ments, the composition including a solid form of a formula (I) compound, or a
pharmaceutically acceptable salt thereof, is administered orally, and the additional antibiotic
agent, for example, a natural penicillin, a llinase-resistant penicillin, an
antipseudomonal penicillin, an aminopenicillin, a first generation cephalosporin, a second
generation cephalosporin, a third generation cephalosporin, a fourth generation
osporin, a carbapenem, a cephamycin, a monobactam, a quinolone, a fluoroquinolone,
an lycoside, a macrolide, a ketolide, a polymyxin, tetracycline or a amide is
administered orally. In some embodiments, the additional therapeutic agent is administered
The additional therapeutic agents described above may be administered
separately, as part of a multiple dosage regimen, from the inhibitor-containing composition.
Alternatively, these agents may be part of a single dosage form, mixed together with the
inhibitor in a single composition.
The pharmaceutical compositions of this invention may be administered
orally, parenterally, by inhalation spray, topically, rectally, y, buccally, vaginally or via
an implanted reservoir. The ceutical compositions of this invention may contain any
conventional xic pharmaceutically-acceptable carriers, adjuvants or vehicles. In some
cases, the pH of the formulation may be adjusted with pharmaceutically able acids,
bases or buffers to enhance the stability of the formulated compound or its delivery form.
The term parenteral as used herein includes subcutaneous, intracutaneous, intravenous,
intramuscular, intra-articular, intrasynovial, ternal, intrathecal, intralesional and
intracranial injection or on 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 ques known in the art using le
dispersing or wetting agents (such as, for example, Tween 80) and suspending agents. The
sterile injectable preparation may also be a sterile injectable on or suspension in a non-
toxic parenterally-acceptable t or solvent, for example, as a solution in l,3-butanediol.
Among the acceptable vehicles and solvents that may be employed are mannitol, water,
Ringer's solution and isotonic sodium de solution. In addition, sterile, fixed oils are
conventionally employed as a solvent or suspending medium. For this purpose, any bland
fixed oil may be employed including tic mono— or diglycerides. Fatty acids, such as
oleic acid and its glyceride derivatives are useful in the preparation of injectables, as are
l pharmaceutically-acceptable oils, such as olive oil or castor oil, especially in their
polyoxyethylated versions. These oil solutions or suspensions may also contain a long—chain
alcohol diluent or dispersant, such as those described in Pharmacopeia Helvetica, or a similar
alcohol.
] The pharmaceutical compositions of this invention may be orally administered
in any orally able dosage form including, but not limited to, capsules, tablets, and
aqueous sions and solutions. In the case of tablets for oral use, carriers which are
commonly used include lactose and corn starch. Lubricating agents, such as magnesium
stearate, are also typically added. For oral administration in a capsule form, useful diluents
include lactose and dried corn starch. When s suspensions and solutions and
propylene glycol are administered orally, the active ingredient is combined with emulsifying
and ding agents. If desired, certain sweetening and/or flavoring and/or coloring agents
may be added.
The pharmaceutical compositions of this invention may also be administered
in the form of suppositories for rectal administration. These compositions can be prepared by
mixing a compound of this invention with a suitable non-irritating excipient which is solid at
room temperature but liquid at the rectal temperature and therefore will melt in the rectum to
release the active components. Such materials include, but are not d to, cocoa butter,
beeswax and polyethylene glycols.
Topical administration of the ceutical compositions of this invention is
especially useful when the desired treatment involves areas or organs readily accessible by
topical application. For application topically to the skin, the pharmaceutical composition
should be ated with a le ointment containing the active components suspended or
dissolved in a carrier. Carriers for topical stration of the compounds of this ion
include, but are not limited to, mineral oil, liquid petroleum, white petroleum, propylene
glycol, polyoxyethylene, polyoxypropylene, emulsifying wax and water. Alternatively, the
pharmaceutical composition can be formulated with a suitable lotion or cream containing the
active compound ded or dissolved in a r. Suitable carriers include, but are not
limited to, l oil, sorbitan monostearate, rbate 60, cetyl esters wax, cetearyl
alcohol, 2-octyldodecanol, benzyl alcohol and water. The pharmaceutical compositions of
this invention may also be topically applied to the lower intestinal tract by rectal suppository
formulation or in a suitable enema formulation. Topically-administered transdermal patches
are also included in this invention.
The pharmaceutical compositions of this ion may be administered by
nasal aerosol or inhalation. Such compositions are prepared according to techniques well—
2012/021275
known in the art of pharmaceutical formulation and may be prepared as solutions in saline,
employing benzyl alcohol or other suitable preservatives, tion promoters to enhance
bioavailability, fluorocarbons, and/or other lizing or dispersing agents known in the art.
According to another embodiment, compounds of formula (I), or a
pharmaceutically acceptable salt thereof, may also be delivered by implantation (e.g.,
surgically), such as with an implantable or indwelling . An implantable or indwelling
device may be designed to reside either ently or temporarily in a subject. Examples of
implantable and indwelling s include, but are not limited to, contact lenses, central
venous ers and needleless connectors, endotracheal tubes, intrauterine devices,
mechanical heart valves, pacemakers, peritoneal is catheters, etic joints, such as
hip and knee replacements, tympanostomy tubes, urinary catheters, voice prostheses, stents,
delivery pumps, vascular filters and implantable control release compositions. Biofilms can
be detrimental to the health of patients with an implantable or indwelling medical device
because they uce an artificial substratum into the body and can cause persistent
infections. Thus, providing compounds of formula (I), or a pharmaceutically acceptable salt
thereof, in or on the implantable or indwelling device can prevent or reduce the production of
a biofilm. In addition, implantable or indwelling devices may be used as a depot or reservoir
of compounds of formula (I), or a pharmaceutically acceptable salt thereof. Any implantable
or indwelling device can be used to deliver a nd of formula (I), or a pharmaceutically
acceptable salt thereof, provided that a) the , a nd of formula (I), or a
pharmaceutically acceptable salt thereof, and any pharmaceutical composition including a
compound of formula (I), or a pharmaceutically acceptable salt thereof, are biocompatible,
and b) that the device can deliver or release an effective amount of compounds of formula (I),
or a ceutically acceptable salt thereof, to confer a therapeutic effect on the treated
patient.
Delivery of therapeutic agents via implantable or ling s is known
in the art. See for example, “Recent Developments in Coated Stents” by Hofma et al.
published in Current Interventional Cardiology s 2001, 3:28—36, the entire contents of
which, including references cited therein, incorporated herein by reference. Other
descriptions of implantable devices can be found in US. Patent Nos. 6,569,195 and
6,322,847; and US. Patent Application Numbers 2004/0044405, 018228,
2003/0229390, 2003/0225450, 2003/0216699 and 2003/0204168, each of which is
incorporated herein by reference in its entirety.
In some embodiments, the implantable device is a stent. In one specific
embodiment, a stent can include ocked meshed cables. Each cable can e metal
wires for structural support and polymeric wires for delivering the therapeutic agent. The
polymeric wire can be dosed by immersing the polymer in a solution of the therapeutic agent.
Alternatively, the therapeutic agent can be embedded in the ric wire during the
formation of the wire from polymeric precursor solutions.
In other embodiments, implantable or indwelling devices can be coated with
polymeric coatings that e the therapeutic agent. The polymeric coating can be designed
to control the release rate of the therapeutic agent. Controlled release of therapeutic agents
can utilize s logies. Devices are known that have a monolithic layer or coating
incorporating a heterogeneous solution and/or dispersion of an active agent in a ric
substance, where the diffusion of the agent is rate limiting, as the agent diffuses through the
polymer to the polymer-fluid interface and is released into the surrounding fluid. In some
s, a e substance is also dissolved or dispersed in the polymeric al, such that
additional pores or channels are left after the material dissolves. A matrix device is lly
diffusion limited as well, but with the channels or other internal geometry of the device also
g a role in releasing the agent to the fluid. The ls can be pre-existing channels
or channels left behind by ed agent or other soluble substances.
Erodible or able devices typically have the active agent physically
immobilized in the polymer. The active agent can be dissolved and/or dispersed throughout
the polymeric material. The polymeric material is often hydrolytically degraded over time
through hydrolysis of labile bonds, allowing the polymer to erode into the fluid, releasing the
active agent into the fluid. Hydrophilic polymers have a generally faster rate of erosion
relative to hydrophobic polymers. Hydrophobic polymers are believed to have almost purely
surface diffusion of active agent, having erosion from the surface inwards. Hydrophilic
polymers are believed to allow water to penetrate the surface of the polymer, allowing
hydrolysis of labile bonds h the surface, which can lead to homogeneous or bulk
erosion of polymer.
The implantable or indwelling device coating can include a blend of polymers
each having a different release rate of the therapeutic agent. For instance, the coating can
include a polylactic acid/polyethylene oxide (PLA-PEO) copolymer and a polylactic
acid/polycaprolactone (PLA-PCL) copolymer. The ctic acid/polyethylene oxide (PLA-
PEO) copolymer can exhibit a higher release rate of therapeutic agent relative to the
ctic acid/polycaprolactone CL) copolymer. The relative amounts and dosage
rates of therapeutic agent delivered over time can be controlled by controlling the relative
amounts of the faster releasing rs relative to the slower releasing polymers. For
higher initial release rates the proportion of faster releasing polymer can be increased ve
to the slower releasing polymer. If most of the dosage is desired to be released over a long
time period, most of the polymer can be the slower releasing polymer. The device can be
coated by spraying the device with a solution or sion of polymer, active agent, and
solvent. The solvent can be evaporated, leaving a coating of polymer and active agent. The
active agent can be dissolved and/or dispersed in the polymer. In some ments, the co—
polymers can be extruded over the device.
Dosage levels of between about 0.01 and about 100 mg/kg body weight per
day, ably between 0.5 and about 75 mg/kg body weight per day and most preferably
between about 1 and 50 mg/kg body weight per day of the active ingredient nd are
useful in a erapy for the prevention and treatment of bacterial infections.
Typically, the pharmaceutical compositions of this invention will be
administered from about 1 to 5 times per day or alternatively, as a continuous infusion.
Alternatively, the compositions of the present invention may be stered in a pulsatile
formulation. 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
form will vary depending upon the host treated and the ular mode of administration. A
l preparation will contain from about 5% to about 95% active compound (w/w).
Preferably, such preparations contain from about 20% to about 80% active compound.
] When the compositions of this invention comprise a combination of a
compound of formula (I), or a pharmaceutically acceptable salt thereof, and one or more
additional therapeutic or prophylactic agents, both the compound and the additional agent
should be present at dosage levels of between about 10% to 80% of the dosage normally
administered in a monotherapy regime.
Upon improvement of a patient's condition, a maintenance dose of a
compound, composition or combination of this invention may be administered, if necessary.
Subsequently, the dosage or frequency of administration, or both, may be reduced, as a
function of the symptoms, to a level at which the improved ion is retained when the
symptoms have been alleviated to the desired level, treatment should cease. Patients may,
however, require intermittent treatment on a long—term basis upon any recurrence or disease
symptoms.
As the skilled artisan will appreciate, lower or higher doses than those recited
above may be ed. Specific dosage and treatment regimens for any particular patient
will depend upon a variety of s, including the activity of the specific compound
employed, the age, body weight, general health status, sex, diet, time of administration, rate
of excretion, drug combination, the severity and course of the disease, and the t's
disposition to the disease and the judgment of the ng physician.
According to another ment, the invention es methods for treating
or preventing a bacterial infection, or disease state, comprising the step of administering to a
patient any nd, pharmaceutical composition, or combination described herein. The
term "patien ", as used herein, means an animal, preferably a mammal, and most preferably a
human.
The compounds of this invention are also useful as commercial reagents which
effectively bind to the gyrase B and/or topoisomerase IV enzymes. As commercial reagents,
the compounds of this invention, and their derivatives, may be used to block gyrase B and/or
topoisomerase IV activity in biochemical or cellular assays for ial gyrase B and/or
topoisomerase IV or their homologs or may be derivatized to bind to a stable resin as a
tethered substrate for affinity chromatography applications. These and other uses which
characterize commercial gyrase B and/or topoisomerase IVinhibitors will be evident to those
of ordinary skill in the art.
In order that this invention be more fully understood, the following schemes
and examples are set forth. These examples are for the purpose of illustration only and are
not to be construed as limiting the scope of the ion in any way.
The following definitions describe terms and abbreviations used :
Ac acetyl
Bu butyl
Et ethyl
Ph phenyl
Me methyl
THF ydrofuran
DCM dichloromethane
CHzClz dichloromethane
EtOAc ethyl acetate
CH3CN acetonitrile
EtOH ethanol
EtZO diethyl ether
MeOH methanol
MTBE methyl tert—butyl ether
DMF N,N—dimethylformamide
DMA methylacetamide
DMSO dimethyl sulfoxide
HOAc acetic acid
TEA triethylamine
TFA trifluoroacetic acid
TFAA trifluoroacetic anhydride
Et3N triethylamine
DIPEA diisopropylethylamine
DIEA diisopropylethylamine
K2CO3 potassium carbonate
NazCO3 sodium carbonate
NaZSZO3 sodium thiosulfate
CszCO3 cesium carbonate
NaHCO3 sodium bicarbonate
NaOH sodium hydroxide
NaZSO4 sodium sulfate
MgSO4, magnesium sulfate
K3PO4 potassium phosphate
NH4Cl um chloride
LC/MS liquid chromatography/mass spectra
GCMS gas chromatography mass spectra
HPLC high performance liquid chromatography
GC gas chromatography
LC liquid chromatography
IC ion chromatography
1M intramuscular
CFU/cfu colony forming units
MIC minimum inhibitory concentration
Hr or h hours
atm atmospheres
rt or RT room temperature
TLC thin layer chromatography
HCl hydrochloric acid
H20 water
EtNCO ethyl isocyanate
Pd/C palladium on carbon
NaOAc sodium acetate
H2804 ic acid
N2 nitrogen gas
H2 hydrogen gas
n—BuLi n—butyl lithium
DI de—ionized
Pd(OAc)2 palladium(II)acetate
PPh3 nylphosphine
i-PrOH isopropyl l
NBS osuccinimide
Pd[(Ph3)P]4 tetrakis(triphenylphosphine)palladium(0)
PTFE polytetrafluoroethylene
rpm revolutions per minute
SM starting material
Equiv. equivalents
1H-NMR proton nuclear ic nce
Synthesis of the Compounds
EXAMPLES
THE BENZIMIDAZOLYL UREA ND
Scheme 2 provides a method for preparing the benzimidazolyl urea compound.
Scheme 2
dlleAC”WP 30 psi H2, Pd/C
+ DP—>
Br 0 14d'°xa”ei
/ NEt3 MeOH, rt
N02 K2003, reflux N020 N02 0
NH2 0
1 2 4
MTBE, CH3CN
NBS, 2°C
E :OH iOH B r
Ni \N N \N Pdldppflc'z TFAA, Me—THF
' aq
/ 45 psi H2, Pd/C aq Nazcos NaOH 2c to rt
<— ‘— <—| + OQN
NEtg, MeOH, THF 1 ,4-dioxane 14-doxane NH4N03 rt to 40°C
reflux remix YNH O
NH2 0
HZN OZN CF3
NH2 0 6
9 8
OH OH
N \N
I NI \N
/ / Ni \ N
0 3’0
JL A JL 10
EiHN H N NHE‘
'—> chiral chrom MeSO3H
—> —>
pH 3.5 buffer N N\ DCM, EtOH
dioxane, reflux >\’NH 0 >’NH O
2°C _ rt
HN HN
>=o >=o Hr
HN 11 HN >20 Me803H
) > 12 HN
) 13
Example l.a
Preparation of 2-(2-nitrophenyl)-2,5-dihydrofuran (3a) and 2-(2-nitrophenyl)-2,3-
dihydrofuran (3b)
Pd(0AC)2. dppp
+ O +
Br 0 1,4—dioxane, \
N02 K2CO3, reflux N02 0 N02 0
1 2 3a 3b
l-Bromonitro-benzene (1) (600 g, 99%, 2.941 mol, Alfa Aesar A1 1686),
l,3—bis(diphenylphosphino)propane (62.50 g, 97%, 147.0 mmol, Alfa Aesar A1293 l), 1,4—
dioxane (2.970 L, Sigma—Aldrich 360481), ium carbonate (812.9 g, 5.882 mol, JT—
Baker 301201), and 2,3-dihydrofuran (2) (1.041 kg, 99%, 1.124 L, 14.70 mol, Aldrich
200018) were mixed in a reaction vessel. A stream of nitrogen was bubbled through the
stirring mixture for 4 hrs, followed by addition of palladium (II) acetate (16.51 g, 73.52
mmol, Strem ) and continuation of deoxygenation for another 10 minutes. The
reaction mixture was d at reflux under en overnight (NMR of a worked-up aliquot
showed complete consumption of arylbromide). The reaction mixture was allowed to cool,
diluted with hexane (l L), filtered through a short plug of Florisil® (500 g, -200 mesh), and
eluted with EtOAc. The filtrate was concentrated under reduced re nitrophenyl)-
2,3-dihydrofuran (3b) is volatile under high vacuum and may be somewhat unstable at room
temperature) giving a mixture of (3a) and (3b) as a dark brown oil (654.0 g). The crude
material was stored in the refrigerator and carried forward t further purification.
Example l.a.l
Asymmetric Preparation of 2-(2-nitrophenyl)-2,5-dihydrofuran (3 a) and 2-(2-nitrophenyl)-
2,3—dihydrofuran (3b)
R)Psd(OAC)2J)-osiPhos
:O()1(,4-dioxane
K2C03, 105°C N02 N02 N02 N02
(R)—3a (S)—3a (R)-3b (S)-3b
l—bromo—2—nitrobenzene (50.0 mg, 98%, 0.2426 mmol, h 365424),
potassium carbonate (67.1 mg, 0.4852 mmol, JT—Baker 301201), (R)—(-)—l—[(S)—2—
(diphenylphosphino)ferrocenyl]ethyldicyclohexylphosphine ethanol adduct ((R)—(S)—
JosiPhos, 7.8 mg, 0.01213 mmol, Strem 261210), 2,3—dihydrofuran (1.0 mL, 99%, 13.08
mmol, Aldrich 200018), and l,4-dioxane (0.98 mL) were mixed in a reaction tube. A stream
of nitrogen was bubbled through the stirring mixture for 20 s, and then palladium (II)
acetate (1.36 mg, 65 mmol, Strem 461780) was added. The tube was sealed and the
reaction e stirred at 105°C overnight. HPLC of the crude reaction mixture showed
nearly complete consumption of aryl bromide and formation of a 1:1 mixture of the 2-(2-
henyl)-2,5-dihydrofuran (3a) and 2-(2-nitrophenyl)-2,3-dihydrofuran (3b). The
reaction mixture was allowed to cool, diluted with hexane (2 mL), filtered, and rinsed with
ethyl acetate. The filtrate was concentrated on a rotary evaporator to afford a brown oil (51
mg). The material was not placed under high vacuum due to volatility and stability concerns.
The crude reaction mixture was determined to be a 1:1 mixture of (3a) and (3b) by 1H NMR
amhmsTMoflw%pmmwbywkaghmmmm%mmwdmmgmm0m3W6EOAMn
hexane (or 0 to 100% CHzClz in hexane) to afford pure samples of (3a) and (3b). Analytical
data for these samples was as s:
2—(2—nitrophenyl)—2,5-dihydrofuran (3a) was obtained as a yellow solid (97%
HPLC purity, 97.0% ee): LCMS (C18 column eluting with 10—90% MeOH / water nt
from 3-5 minutes with formic acid modifier) M+1: 192.05 (3.40 min); HPLC retention time
of 4.2 min (YMC ODS-AQ 150 x 3.0 mm column eluting with 10—90% CH3CN / water
gradient over 8 minutes with 0.1% TFA er and 1 mL/min flow rate); analytical chiral
HPLC retention time of 7.4 min (major enantiomer) and 8.1 min (minor omer) eluting
with 10% iPrOH / hexane on a CEL® OJ® 4.6 x 250 mm column with 1 mL/min
flow rate at 30°C; 1H NMR (300 MHz, CDCl3) 5 8.02 (d, J = 8.2 Hz, 1H), 7.73 (d, J = 7.9 Hz,
1H), 7.64 (t, J = 7.6 Hz, 1H), 7.45 — 7.38 (m, 1H), 6.37 — 6.30 (m, 1H), 6.11 — 6.06 (m, 1H),
6.04 — 5.98 (m, 1H), 5.02 — 4.83 (m, 2H) ppm; 13C NMR (75 MHz, CDC13) 5 146.97, 139.11,
13395,12958,12810,12809,12678,12438,8428,76421xnn;BC])EPTVthR(75
MHz, CDC13) 5 133.95 (CH), 129.58 (CH), 128.10 (CH), 128.09 (CH), 126.78 (CH), 124.38
(CPD,8428(CTD,7642(CPh)pan
2—(2—nitrophenyl)—2,3-dihydrofuran (3b) was obtained as a yellow oil %
HPLC purity, 44.0% ee): LCMS (C18 column eluting with 10-90% MeOH / water gradient
from 3-5 minutes with formic acid modif1er) M+1: 192.05 (3.72 min); HPLC retention time
of 4.8 min (YMC ODS—AQ 150 x 3.0 mm column eluting with 10—90% CH3CN / water
gradient over 8 minutes with 0.1% TFA modifier and 1 mL/min flow rate); analytical chiral
HPLC retention time of 5.96 min (major enantiomer) and 6.35 min (minor enantiomer)
eluting with 10% iPrOH / hexane on a CHIRALCEL® OJ® 4.6 x 250 mm column with 1
mL/min flow rate at 30°C; 1H NMR (300 MHz, CDCl3) 5 8.08 (d, J = 8.2 Hz, 1H), 7.73 (d, J
=78lfi,HD,7650,J=761h,HD,748—739(m,HD,650@LJ=241h,HD,610
(wLJ=109,74Ph,HD,495@LJ=25PR,HD,346—335(m,HD,250—239(m,HD
ppm; 13C NMR (75 MHz, CDCl3) 5 , 144.98, 139.73, 133.93, 128.07, , 124.85,
99.29, 78.45, 38.29 ppm; 13C DEPT NMR (75 MHz, CDCl3) 5 144.98 (CH), 133.93 (CH),
128.07 (CH), 127.11 (CH), 124.85 (CH), 99.29 (CH), 78.45 (CH), 38.29 (CH2) ppm.
321 and 3b were carried through the reduction step to afford 2—tetrahydrofuran—
2-yl-aniline (4) as set forth in Example 1.b (below). is of this material revealed that
both 321 and 3b were formed with the same major enantiomer, with an overall 70% ee. It is
unknown whether the absolute stereochemistry of the major enantiomer was (R) or (S).
Example 1.b
ation of 2-tetrahydrofuranyl-aniline (4)
psi H2, Pd/C
NEt3, MeOH rt
N02 NO2 O
NH2 0
5% Palladium on carbon (16.3 g, 50% wet, 3.83 mmol, Aldrich 330116) was
placed in a Parr bottle under nitrogen, followed by MeOH (100 mL, er 909333). The
crude mixture of 2-(2-nitrophenyl)-2,5-dihydrofuran and 2-(2-nitrophenyl)-2,3-dihydrofuran
(3a & 3b) (163 g) dissolved in MeOH (3 89 mL) was added to the Parr bottle, ed by
NEt3 (237.6 mL, 1.705 mol, Sigma-Aldrich 471283). The bottle was placed on a Parr shaker
and saturated with H2. 30 psi H2 was added and the bottle was shaken until starting material
was completely consumed (LCMS and NMR showed complete reaction). The reaction
mixture was purged with nitrogen, filtered through CeliteTM and rinsed with EtOAc. The
te was concentrated on a rotary evaporator giving a brown oil. The reaction was
repeated three more times on the same scale and the batches were combined for purification.
The crude product was vacuum distilled (ca. 15 torr) collecting the distillate at 108 - 129°C to
give (4) as a clear faint yellow oil (427.9 g, average yield was 84%; 98% GCMS purity).
LCMS (C18 column eluting with 10—90% CH3CN / water gradient over 5 minutes with
formic acid modifier) M+1: 163.95 (1.46 min). 1H NMR (300 MHz, CDCl3) 5 7.15 — 7.04
(m, 2H), 6.77 — 6.62 (m, 2H), 4.85 — 4.77 (m, 1H), 4.18 (s, 2H), 4.12 — 4.02 (m, 1H), 3.94 —
3.85 (m, 1H), 2.25 — 1.95 (m, 4H) ppm.
WO 97270
Example 1.c
Preparation of 4-bromotetrahydrofuranyl-aniline (5).
NH O MTBE, CH3CN
2 ””2 O
NBS, 2°C
4 5
To a stirring solution of 2-tetrahydrofuranyl-aniline (4) (53.45 g, 327.5
mmol) in methyl tert-butyl ether (MTBE, 641.4 mL) and acetonitrile (213.8 mL) cooled to
2°C was added N—bromosuccinimide (NBS, 58.88 g, 99%, 327.5 mmol, Aldrich B81255) in 4
portions maintaining internal temperature below about 8°C. The reaction e was stirred
while cooling with an ice—water bath for 30 minutes (NMR of a worked—up aliquot showed
complete consumption of starting material). Aqueous 1 N Na2S203 (330 mL) was added to
the reaction mixture, removed the cold bath and d for 20 minutes. The mixture was
diluted with EtOAc and the layers were separated. The organic phase was washed with
saturated aqueous NaHCO3 (2x), water, brine, dried over MgSO4, filtered through a short
plug of , eluted with EtOAc, and concentrated under d pressure to give (5) as a
very dark amber oil (82.25 g, 77—94% HPLC purity). Carried forward without further
purification. LCMS (C18 column eluting with 10—90% CH3CN / water gradient over 5
minutes with formic acid modifier) M+1: 242.10 (2.89 min). 1H NMR (300 MHz, CDCl3) 5
7.22 (d, J = 2.3 Hz, 1H), 7.16 (dd, J = 8.4, 2.3 Hz, 1H), 6.54 (d, J = 8.4 Hz, 1H), 4.79 — 4.73
(m, 1H), 4.15 (s, 2H), 4.10 — 4.01 (m, 1H), 3.93 — 3.85 (m, 1H), 2.26 — 2.13 (m, 1H), 2.12 —
1.97 (m, 3H) ppm.
Example 1.d
Preparation of N—(4-bromonitrotetrahydrofuranyl-phenyl)-2,2,2-trifluoro-acetamide
(6)-
TFAA, Me-THF,
2°C to rt
NH4N03, rt to 40°C
0 NH 0
NHZO Y
CF3
To trifluoroacetic anhydride (455.3 mL, 3.275 mol, Sigma—Aldrich 106232)
stirring at 2°C was slowly added 4-bromotetrahydrofuranyl-aniline (5) (79.29 g, 327.5
mmol) as a thick oil via on funnel over 15 minutes (reaction ature rose to 14°C).
The ing oil was rinsed into the reaction mixture with anhydrous
2-methyltetrahydrofuran (39.6 mL, Sigma—Aldrich 414247). The cold bath was removed and
ammonium e (34.08 g, 425.8 mmol, Aldrich 467758) was added. The reaction
temperature rose to 40°C over about 30 minutes at which time a cold water bath was used to
control the exotherm and bring the reaction to room temperature. The cold bath was then
removed and stirring continued for another 40 minutes (HPLC showed very little remaining
un-nitrated material). The reaction mixture was slowly poured into a stirring mixture of
d ice (800 g). The solid precipitate was collected by filtration, washed with water,
saturated aqueous NaHC03 (to pH 8), water again, and hexane. The wet solid was dried first
in a convection oven at 50°C for several hours and then under reduced pressure in an oven at
40°C overnight giving (6) as a light brown solid (77.86 g, 62% yield; 98% HPLC ).
LCMS (C18 column eluting with 10—90% CH3CN / water gradient over 5 minutes with
formic acid r) M+1: 383.19 (3.27 min). 1H NMR (300 MHz, CDCl3) 5 9.81 (s, 1H),
8.08 (d, J = 2.2 Hz, 1H), 7.73 (d, J = 2.2 Hz, 1H), 4.88 (dd, J = 9.0, 6.5 Hz, 1H), 4.17 — 4.08
(m, 1H), 4.03 — 3.95 (m, 1H), 2.45 — 2.34 (m, 1H), 2.17 — 2.06 (m, 2H), 1.96 — 1.83 (m, 1H)
ppm.
Example 1.e
Preparation of 4-bromonitrotetrahydrofuranyl-aniline (6a).
aq NaOH
OZN 1,4-dioxane
reflux OZN
O NH O
\\l’ NH2 0
N—(4-bromonitrotetrahydrofuranyl-phenyl)-2,2,2-trifluoro-acetamide
(6) (54.00 g, 140.9 mmol) was dissolved in oxane (162 mL) and added aqueous 6 M
NaOH (70.45 mL, 422.7 mmol, JT-Baker 567202). The reaction mixture was stirred at reflux
for 2 days (HPLC showed complete conversion). The mixture was allowed to cool, diluted
with MTBE (800 mL), and washed with water (2 x 200 mL), saturated aqueous NH4Cl,
water, and brine. The mixture was dried over MgSO4, filtered, and concentrated under
reduced pressure to give (621) as a dark amber oil (40.96 g, 93% yield; overall 92% HPLC
plus NMR purity). LCMS (C18 column g with 10-90% MeOH / water gradient from 3-
minutes with formic acid modifier) M+1: 287.28 (3.44 min). 1H NMR (300 MHz, CDCl3) 5
8.24 (d, J = 2.4 Hz, 1H), 7.41 (d, J = 2.3 Hz, 1H), 6.91 (s, 2H), 4.80 (t, J = 7.2 Hz, 1H), 4.14 —
4.05 (m, 1H), 3.98 — 3.90 (m, 1H), 2.36 — 2.19 (m, 1H), 2.15 — 2.01 (m, 3H) ppm.
Example If
Preparation of 2-[5-(4-aminonitrotetrahydrofuranyl-phenyl)pyrimidinyl]propan
ol (8).
\ N Pd(PPh3 4) N \N
N C0 I
aq a2 3 /
1 4—dioxane
OZN 1
/B\ reflux
O O
NH2 0
as NH2 0
7 8
4-Bromonitrotetrahydrofuranyl-aniline (621) (40.40 g, 92%, 129.5
mmol), 1,4-dioxane (260 mL, Sigma-Aldrich 360481), 2-[5-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolan—2—yl)pyrimidin—2-yl]propan—2—ol (7) (41.05 g, 155.4 mmol), and aqueous 2.7 M
NazCO3 (143.9 mL, 388.5 mmol) were mixed. A stream of nitrogen was bubbled through the
stirring mixture for 1 hr, followed by addition of tetrakis(triphenylphosphine)palladium (0)
(7.48 g, 6.47 mmol, Strem 462150). The reaction mixture was stirred at reflux for 2 hrs
(HPLC showed complete reaction), allowed to cool, and diluted with EtOAc. The mixture
was washed with water, saturated aqueous NH4Cl, and brine, dried over MgSO4, and filtered
h a short plug of il® eluting with EtOAc. The filtrate was concentrated under
reduced pressure giving dark brown oil. The oil was dissolved in CHzClz and eluted through
a short plug of silica gel with CHzClz and then EtOAc. The desired fraction was concentrated
on a rotary evaporator until a precipitate formed giving a thick brown slurry, which was
triturated with MTBE. The solid was ted by tion, washed with MTBE, and dried
under high vacuum giving (8) as a yellow solid (35.14 g, 99+% HPLC purity). LCMS (C18
column eluting with 10-90% CH3CN / water gradient over 5 minutes with formic acid
modifier) M+1: 345.00 (2.69 min). 1H NMR (300 MHz, CDCl3) 5 8.88 (s, 2H), 8.36 (d, J =
2012/021275
2.2 Hz, 1H), 7.56 (d, J = 2.1 Hz, 1H), 7.09 (s, 2H), 4.92 (t, J = 7.2 Hz, 1H), 4.62 (s, 1H), 4.20
— 4.11 (m, 1H), 4.03 — 3.94 (m, 1H), 2.39 — 2.26 (m, 1H), 2.23 — 2.08 (m, 3H), 1.64 (s, 6H)
ppm. The filtrate was concentrated and purified by ISCO silica gel chromatography eluting
with 0 to 80% EtOAc / hexane giving a second crop of product (8) as an amber solid (4.46 g,
88% overall yield ; 88% HPLC purity).
Example 1.g
Preparation of 2-[5-(3,4-diaminotetrahydrofuranyl-phenyl)pyrimidinyl]propanol
(9).
:0H fiOH
psi45 H2, Pd/C
NEt3, MeOH THF
] To a suspension of 2-[5-(4-amino-3 -nitrotetrahydrofuranyl-
phenyl)pyrimidinyl]propanol (8) (30.10 g, 87.41 mmol) and THF (90 mL) in a Parr
bottle under nitrogen was added a slurry of 5% palladium on carbon (3.01 g, 50% wet, 0.707
mmol, Aldrich 330116) in MeOH (90 mL, JT—Baker ), followed by NEt3 (24.37 mL,
174.8 mmol, Sigma-Aldrich 471283). The vessel was placed on a Parr shaker and saturated
with H2. After adding 45 psi H2, the vessel was shaken until consumption was complete
(HPLC showed complete conversion). The reaction mixture was purged with nitrogen,
filtered through CeliteTM and rinsed with EtOAc. The e was re-filtered through a 0.5
micron glass fiber filter paper sandwiched between two P5 papers, and concentrated under
reduced pressure giving (9) as a light brown foam (28.96 g, 98% yield; 93% NMR purity).
LCMS (C18 column eluting with 10—90% CH3CN / water nt over 5 minutes with
formic acid modifier) M+1: 315.32 (1.54 min). 1H NMR (300 MHz, CDCl3) 5 8.83 (s, 2H),
6.92 (d, J = 1.8 Hz, 1H), 6.88 (d, J = 1.8 Hz, 1H), 4.90 (dd, J = 7.9, 6.2 Hz, 1H), 4.72 (s, 1H),
4.18 (s, 2H), 4.17 — 4.08 (m, 1H), 3.99 — 3.89 (m, 1H), 3.46 (s, 2H), 2.34 — 2.19 (m, 1H), 2.17
— 2.05 (m, 3H), 1.63 (s, 6H) ppm.
Example 1.h
ation of 1-ethyl-3 -[5-[2-(1-hydroxymethyl-ethyl)pyrimidinyl]tetrahydrofuran-
2-yl-IH—benzimidazolyl]urea (11).
N\NOI Z Z
I s/ O
// NWNHB
pH 3. 5 buffer N\
dioxane reflux >’NH
HN) 11
To a stirring solution of 2-[5-(3,4-diaminotetrahydrofuranyl-
phenyl)pyrimidinyl]propanol (9) (32.10 g, 102.1 mmol) in 1,4-dioxane (160.5 mL,
Sigma—Aldrich 360481) was added pH 3.5 buffer (240.8 mL), prepared by dissolving NaOAc
trihydrate (34.5 g) in IN aqueous H2SO4 (240 mL). 1-Ethyl(N—(ethylcarbamoyl)-C—
methylsulfanyl-carbonimidoyl)urea (10) (28.46 g, 122.5 mmol, CB Research and
Development) was added to the on mixture and stirred at reflux overnight (HPLC
showed 99% consumption of ng diamine). The reaction mixture was cooled to room
temperature and poured portion-wise (frothing) into a stirring solution of s saturated
NaHCO3 (480 mL) and water (120 mL) giving pH 8-9. This was stirred for 30 minutes, the
solid was collected by filtration, washed copiously with water to neutral pH, and then more
sparingly with EtOH. The solid was dried under reduced pressure giving (11) as an off—white
solid (34.48 g, 82% yield; 99.4% HPLC purity). LCMS (C18 column eluting with 10—90%
CH3CN / water gradient over 5 minutes with formic acid modifier) M+1: 411.41 (1.73 min).
1H NMR (300 MHz, MeOD) 5 9.02 (s, 2H), 7.62 (s, 1H), 7.37 (s, 1H), 5.31 (s, 1H), 4.23 (dd,
J = 14.5, 7.3 Hz, 1H), 4.01 (dd, J = 15.0, 7.1 Hz, 1H), 3.38 — 3.28 (m, 2H), 2.58 — 2.46 (m,
1H), 2.16 — 2.05 (m, 2H), 2.02 — 1.88 (m, 1H), 1.63 (s, 6H), 1.22 (t, J = 7.2 Hz, 3H) ppm.
Example 1.i
Chiral chromatographic ion of 1-ethyl-3 -[5-[2-(1-hydroxymethyl-ethyl)pyrimidin-5 -
yl][(2R)—tetrahydrofuranyl]-1H-benzimidazolyl]urea (12)
E :OH E :OH
N \ N N \ N
| I
/ /
chiral chrom
N N
>\’NH O >\’NH O
HN HN
>20 >20
HN 11 HN
> > 12
A racemic sample of 1-ethyl[5-[2-(1-hydroxymethyl-ethyl)pyrimidin
tetrahydrofuran—2—yl—1H-benzimidazol—2—yl]urea (11) (24.60 g) was resolved on a
CHIRALPAK® IC® column (by Chiral Technologies) eluting with CHzClz / MeOH / TBA
(60/ 40/ 0.1) at 35°C giving the desired enantiomer (12) as a white solid (11.35 g, 45%
yield; 99+% HPLC purity, 99+% ee). Analytical chiral HPLC retention time was 6.2 min
(CHIRALPAK® IC® 4.6 x 250 mm column, 1 mL/min flow rate, 30°C).
The structure and absolute stereochemistry of 12 were confirmed by single—
crystal x-ray diffraction analysis. Single crystal diffraction data was acquired on a Bruker
Apex II diffractometer equipped with sealed tube Cu K-alpha source (Cu K01 radiation, y =
1.54178 A) and an Apex II CCD detector. A crystal with dimensions of 1/2x 0.05 x 0.05 mm
was selected, cleaned using l oil, mounted on a MicroMount and ed on a Bruker
APEXH system. Three batches of 40 frames separated in reciprocal space were obtained to
e an orientation matrix and initial cell ters. Final cell parameters were obtained
and refined after data collection was completed based on the full data set. Based on
systematic absences and intensities tics the structure was solved and refined in acentric
P21 space group.
A ction data set of reciprocal space was obtained to a resolution of 0.9 A
using 050 steps using 60 s exposure for each frame. Data were collected at 100 (2) K.
Integration of intensities and refinement of cell parameters were accomplished using APEXII
2012/021275
software. Observation of the crystal after data collection showed no signs of decomposition.
As shown in Fig. 1, there are two symmetry independent molecules in the ure and both
symmetry independent molecules are R isomers.
The data was collected, refined and reduced using the Apex 11 software. The
structure was solved using the SHELXS97 (Sheldrick, 1990); program(s) and the structure
d using the SHELXL97 (Sheldrick, 1997) program. The crystal shows monoclinic cell
with P21 space group. The e parameters are a = 9.8423(4) A, b = 10.8426(3) A, c =
19.4441 (7) A, [3 = 102.966(3)°. Volume = 2022.09(12) A3.
Example 1.j
Preparation of the esulfonic acid salt of 1-ethyl[5-[2-(1-hydroxymethylethyl
)pyrimidinyl][(2R)-tetrahydrofuranyl]-1H-benzimidazolyl]urea (13)
N \N
I f”
/ N \N
MeSO3H
>’NH DCM,EtOH
2°C-rt N
HN>=O HN>\’NH o
HN >20
) 12 HN Me803H
A stirring suspension of 1-ethyl[5-[2-(1-hydroxymethyl-ethyl)pyrimidin-
7-[(2R)—tetrahydrofuranyl]-1H-benzimidazolyl]urea (12) (9.32 g, 22.71 mmol) in
absolute ethanol (93.2 mL) was cooled with an ice-water bath. Methanesulfonic acid (1.548
mL, 23.85 mmol, Sigma—Aldrich 471356) was added, removed cold bath and stirred at room
temperature for 20 minutes. It was concentrated on a rotary evaporator at 35°C to a thick
slurry, diluted with EtOAc, collected the solid by filtration, washed with EtOAc, and dried
under reduced re giving an initial crop of (13) as a white solid (8.10 g). The filtrate
was concentrated on a rotary evaporator giving a yellowish glassy foam, which was dissolved
in EtOH, concentrated to a solid slurry, triturated with EtOAc / EtZO, and ted by
filtration. The solid was washed with EtOAc / EtZO, combined with the first crop, and dried
under reduced pressure giving (13) as a white solid (9.89 g, 86% yield; 99+% HPLC purity,
WO 97270
99+% ee). Analytical chiral HPLC shows one enantiomer with ion time of 6.3 min
eluting with CHzClz / MeOH / TBA (60/ 40 / 0.1) on a CHIRALPAK® IC® 4.6 x 250 mm
column with 1 mL/min flow rate at 30°C. LCMS (C18 column eluting with 10—90% CH3CN
/ water gradient over 5 minutes with formic acid modifier) M+1: 411.53 (1.74 min). 1H NMR
(300 MHz, MeOD) 5 9.07 (s, 2H), 7.79 (s, 1H), 7.62 (s, 1H), 5.30 (t, J = 7.3 Hz, 1H), 4.24
(dd, J = 14.6, 7.3 Hz, 1H), 4.04 (dd, J = 15.0, 7.6 Hz, 1H), 3.40 — 3.30 (m, 2H), 2.72 (s, 3H),
2.65 — 2.54 (m, 1H), 2.20 — 2.07 (m, 2H), 2.04 — 1.90 (m, 1H), 1.64 (s, 6H), 1.23 (t, J = 7.2
Hz, 3H) ppm.
Example 1.k
1—pot deprotection/ Suzuki procedure
Preparation of 2-[5-(4-aminonitrotetrahydrofuranyl-phenyl)pyrimidinyl]propan
01(8).
N \N Pd(dppf)C|2 ”I \N
V /
aq NaZCO3
OZN +
B 1,4-dioxane
OYNH O 0’ \O reflux
CF3 M OZN
6 NH2 0
N—(4-Bromonitrotetrahydrofuranyl-phenyl)-2,2,2-trifluoro-acetamide
(6) (19.00 g, 49.59 mmol), 2—[5—(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyrimidin
yl]propan—2—ol (7) (14.41 g, 54.55 mmol), aqueous 2.7 M sodium carbonate (73.48 mL, 198.4
mmol), and 1,4-dioxane (190 mL, Sigma-Aldrich 360481) were mixed. A stream of nitrogen
was bubbled through the stirring mixture for 40 minutes, followed by addition of 1,1’-
bis(diphenylphosphino)ferrocene dichloropalladium dichloromethane adduct (2.025 g, 2.480
mmol, Strem 460450). The reaction mixture was stirred at reflux under N2 for 7 hrs, added
another 50 mL of saturated aqueous sodium carbonate, and refluxed for another 16 hrs. The
reaction e was d to cool, then diluted with EtOAc (500 mL) and water (200
mL). The layers were separated and the aqueous phase extracted with EtOAc (200 mL). The
combined organic phase was washed with water (500 mL), brine (500 mL), dried over
NaZSO4, filtered h a Florisil® plug, and concentrated on a rotary evaporator to give
crude (8) as an orange oil. Purified by ISCO silica gel chromatography eluting with 20—90%
EtOAc / hexane to give (8) as an orange solid (15.00 g, 81—88% ). LCMS (C18 column
eluting with 10-90% CH3CN / water gradient over 5 minutes with formic acid modifier)
M+1: 345.35 (2.68 min). 1H NMR (300 MHz, CDC13) 5 8.88 (s, 2H), 8.36 (d, J = 2.2 Hz,
1H), 7.56 (d, J = 2.1 Hz, 1H), 7.09 (s, 2H), 4.92 (t, J = 7.2 Hz, 1H), 4.62 (s, 1H), 4.20 — 4.11
(m, 1H), 4.03 — 3.94 (m, 1H), 2.39 — 2.26 (m, 1H), 2.23 — 2.08 (m, 3H), 1.64 (s, 6H) ppm.
Example 1.k
Preparation of Form 1: Chiral chromatographic isolation of 1-ethyl[5-[2-(1-hydroxy
methyl-ethyl)pyrimidinyl]—7-[(2R)-tetrahydrofuranyl]—1H-benzimidazolyl]urea
] A racemic sample of 1-ethyl[5-[2-(1-hydroxymethyl-ethyl)pyrimidin
yl]—7—tetrahydrofuran—2—yl—1H-benzimidazol—2—yl]urea (24.60 g) was resolved on a
CHIRALPAK® IC® column (by Chiral Technologies) eluting with DCM / MeOH / TBA (60
/ 40/ 0.1) at 35°C. The d fractions were ted, concentrated to dryness on a rotary
evaporator, then dried overnight in a vacuum oven at about 40°C giving the desired
enantiomer as a white solid (11.35 g, 99+% HPLC purity, 99+% ee) which was used for
physical form characterization. LCMS (C18 column eluting with 10—90% CH3CN / water
gradient over 5 minutes with formic acid modifier) M+1: 411.66 (1.74 min). HPLC ion
time was 3.61 min (YMC ODS—AQ 150 x 3.0 mm column eluting with 10—90% CH3CN/
water gradient over 8 minutes with 0.1% TFA er and 1 mL/min flow rate). Analytical
chiral HPLC shows one enantiomer with retention time of 6.2 min (CHIRALPAK® IC® 4.6
x 250 mm column, 1 mL/min flow rate, 30°C). 1H NMR (300 MHz, MeOD) 5 9.02 (s, 2H),
7.62 (d, J = 1.6 Hz, 1H), 7.37 (s, 1H), 5.32 (br.s, 1H), 4.23 (dd, J = 14.8, 6.7 Hz, 1H), 4.01
(dd, J = 15.1, 7.0 Hz,1H), 3.37 — 3.29 (m, 2H), 2.58 — 2.46 (m, 1H), 2.17 — 2.06 (m, 2H),
2.03 — 1.90 (m, 1H), 1.63 (s, 6H), 1.22 (t, J = 7.2 Hz, 3H) ppm.
Example 1.1
Preparation of Form 11
To 20 mg of the benzimidazolyl urea compound was added to an HPLC vial
and 1 mL acetonitrile (CH3CN) was added to the vial with stirring at room temperature. To
the resulting suspension a stoichiometric amount of 1 Molar HCl solution (0.049 mL) in
water was added. The vial was crimp—capped and the mixture (suspension) was allowed to
equilibrate for 6 days under gentle stirring before it was filtered and the white solid, dried
under vacuum for several hours and recovered for physical form characterization.
Example 1.m
Preparation of Form 111
To 20 mg of the benzimidazolyl urea compound in an HPLC vial 0.5 ml of
THF was added under stirring at room temperature. Stoichiometric amount of HCl was
added as 1M aqueous solution (0.049 mL). 2 mL of methyl tert—butyl ether was added and
the suspension was allowed to equilibrate ght with stirring. It was then filtered, and the
white solid was dried under vacuum for several hours before subjecting the compound to
physical form characterization.
Example 1.n
Preparation of Form IV
] A suspension of 3,4—diamino-5—[(2R)—tetrahydrofuran—2—
yl]phenyl]pyrimidinyl]propanol (2 g, 6.362 mmol) and (3Z)ethyl
[(ethylcarbamoylamino)-methylsulfanyl-methylene]urea (1.478 g, 6.362 mmol) in dioxane
(26.00 mL) and buffer pH 3.5 (100 mL, stock solution made from 1N HZSO4 and NaOAc)
was stirred for 3 h under reflux (~95 oC). Then the reaction e was quenched with
approximately 50 mL water. The crude reaction mixture was transferred to a larger
roundbottom flask, neutralized with NaHCO3, then filtered to give a beige solid which was
washed with hot water (~200 mL). The solid (1.84 g) was dried and was salted as MeSO3H
salts. 2.25 g (81%ee; 98% pure; 69.8 % yield) of pure product was obtained which was
submitted for supercritical fluid chromatography (SFC) chiral tion to give peak one (S-
enantiomer) and peak two (R—enantiomer).
The material (the R-enantiomer) from SFC (peak 2) was suspended in MeOH
(~20 mL) and basifled with sat NaHC03 (200 mL). The mixture was d for 1h, then
filtered. After flltration, the solids were collected, washed with warm water (~500 mL) and
dried. 1.22 g of parent molecule (free base; peak 2) was obtained which was then salted as the
mesylate. 1.43 g of pure mesylate was obtained (R; 99 % ee; 99% pure).
The te salt of the compound of the present application may be prepared
using methods known to those skilled in the art. For example, the free base of the
idazolyl urea compound may be mixed with a stoichiometric amount of a
methanesulfonic acid and the mixture concentrated until a solid is obtained. atively,
the free base of the benzimidazolyl urea compound may be suspended in an appropriate
solvent containing the acid and allowing the mixture to equilibrate until the free base if
converted to the corresponding acid addition salt. Figure 12 shows a 1H NMR spectrum of
the mesylate salt of the benzimidazolyl urea compound.
LOGY STUDIES
The enzyme tion activities of compounds of this invention may be
determined in the experiments described below:
] DNA Gyrase ATPase Assay
The ATP hydrolysis ty of S. aureus DNA gyrase is measured by
coupling the production of ADP h pyruvate kinase/lactate dehydrogenase to the
oxidation ofNADH. This method has been described previously (Tamura and Gellert, 1990,
J. Biol. Chem, 265, 21342).
] ATPase assays are carried out at 30°C in buffered solutions containing 100
mM TRIS pH 7.6, 1.5 mM MgC12, 150 mM KCl. The coupling system contains final
concentrations of 2.5 mM phosphoenol pyruvate, 200 ”M nicotinamide e dinucleotide
(NADH), 1 mM DTT, 30 ug/ml pyruvate kinase, and 10 ug/ml lactate dehydrogenase. The
enzyme (90 nM final concentration) and a DMSO solution (3 % final concentration) of a
compound is added. The reaction mixture is allowed to incubate for 10 minutes at 30°C. The
reaction is ted by the addition of ATP to a final tration of 0.9 mM, and the rate of
NADH disappearance is monitored at 340 ters over the course of 10 minutes. The Ki
and IC50 values are determined from rate versus concentration profiles.
DNA Topo IV ATPase Assay
The conversion ofATP to ADP by S. aureus TopoIV enzyme is coupled to the
conversion ofNADH to NAD+, and the progress of the reaction is measured by the change in
absorbance at 340 nm. TopoIV (64 nM) is incubated with the selected compound (3%
DMSO final) in buffer for 10 minutes at 30 °C. The buffer consists of 100 mM Tris 7.5, 1.5
mM MgCl2, 200 mM K°Glutamate, 2.5 mM phosphoenol pyruvate, 0.2 mM NADH, 1 mM
DTT, 5 ug/mL linearized DNA, 50 ug/mL BSA, 30 ug/mL pyruvate kinase, and 10 ug/mL
lactate dehyrodgenase (LDH). The reaction is ted with ATP, and rates are monitored
continuously for 20 minutes at 30°C on a Molecular Devices SpectraMAX plate reader. The
inhibition constant, Ki, and the IC50 are determined from plots of rate vs. concentration of
selected compound fit to the Morrison Equation for tight binding inhibitors.
Example 3
Susceptibility Testing in Liquid Media
WO 97270
nds of this invention were tested for antimicrobial activity by
susceptibility testing in liquid media. Such assays can be performed within the guidelines of
the latest CLSI document governing such ces: 8 Methods for Dilution
Antimicrobial Susceptibility Tests for Bacteria that Grow Aerobically; Approved Standard--
Eighth Edition (2009)". Other publications such as "Antibiotics in Laboratory Medicine"
(Edited by V. Lorian, Publishers Williams and Wilkins, 1996) provide essential practical
techniques in laboratory antibiotic testing. The c protocols used were as follows:
ol #1: Gyrase MIC determination of nds using
microdilution broth method
Materials:
Round bottom l microtiter plates (Costar 3788)
r Hinton H agar plates (MHH; BBL premix)
Mueller Hinton H liquid broth (MHII; BBL premix)
BBL Prompt Inoculation System (Fisher B26306)
Test Reading Mirror (Fisher)
Agar plates with bacteria streaked to single colonies, freshly prepared
Sterile DMSO
Human serum (U.S. Biologicals S1010—5 1)
Laked horse blood (Quad Five 270—100)
Resazurin 0.01%
Sprague Dawley Rat serum (U.S. Biologicals 1011—90B or Valley BioMedical
AS306 1 SD)
Pooled Mouse serum (Valley BioMedical AS3054)
Strains (media, broth and agar):
1. Staphylococcus aureus ATCC #29213
a. MHH
b. MHH -- 50% human serum
c. MHII -- 50% rat serum
d. MHII -- 50% mouse serum
9‘95“!” Staphylococcus aureus ATCC #29213 GyrB T1731 (MHll)
Staphylococcus aureus, JMI collection strains; see table 5 (MHll)
Staphylococcus midis, JMI collection strains; see table 5 (MHII)
Enterococcusfaecalis ATCC #29212 (MHII + 3% laked horse blood)
_ 53 _
6. Enterococcusfaecium ATCC #49624 (MHII + 3% laked horse blood)
7. Enterococusfaecalis, JMI collection strains; see table 5 (MHII -- 3% laked horse
blood)
8. Enterococusfaecium, JMI collection strains; see table 5 (MHII -- 3% laked horse
blood)
9. Streptococcus pneumoniae ATCC #10015 (MHII + 3% laked horse blood)
. Streptococcus pneumoniae, JMI tion strains; see table 5 (MHH + 3% laked horse
blood)
11. flhaemolytic streptococci, Groups A, B, C, G) JMI collection strains; see table 5
(MHII + 3% laked horse blood)
12. Bacillus cereus ATCC 10987 (MHH)
13. Bacillus cereus ATCC 14579(MHII)
14. Bacillus subtilis ATCC 6638 (MHII)
. Bacillus subtilis (168) ATCC 6051 (MHII)
Inoculum prep (for all strains other than S. aureus + 50% sera):
1. Using the BBL Prompt kit, picked 5 big or 10 small, well separated colonies from
culture grown on the appropriate agar medium as indicated above and inoculated 1
mL of sterile saline provided in the kit.
2. Vortexed the wells for ~ 30 s to provide a suspension of ~108 mL. Actual
y could be confirmed by plating out dilutions of this suspension.
3. d the suspension 1/ 100 by transferring 0.15 mL of cells into 15 mL (~106
mL) sterile broth (or see below) for each plate of nds tested, then swirled to
mix. If more than 1 plate of compounds (> 8 compounds), including compound 12 or 13,
which may be prepared by following Examples 1.i and 1.j, respectively (above), were
tested, volumes were increased accordingly.
a. For E. faecalis, E. faecium and S. niae: 14.1 mL MHII + 0.9 mL laked
horse blood was used.
4. Used 50 pl cells (~5 X 104 cells) to inoculate each microtiter well containing
50 ul of the drug diluted in broth (see below).
Drug dilutions, inoculation, MIC determination:
1. All drug/compound stocks were prepared at 12.8 mg/mL concentration, usually in
100% DMSO.
Diluted drug/compound stocks to 200x desired final concentration in 50 uL DMSO.
If starting concentration of MICs was 8 ug/mL final concentration, then required 6.25
uL of stock + 43.75 uL DMSO. Each 200x stock was placed in a separate row of
column 1 of a new 96 well microtiter plate.
Added 25 uL ofDMSO to columns 2 -12 of all rows of the microtiter plate containing
200x compound stocks and serially diluted 25 uL from column 1 through column 11,
changed tips after each column. i.e. 25 uL compound + 25 uL DMSO = 2x dilution.
Left “no nd” DMSO well at the end of the series for l.
For each strain tested (except S. aureus + 50% human serum), prepared two microtiter
plates with 50 uL of MHII broth using a Matrix pipettor.
Transferred 0.5 uL of each dilution (w/Matrix auto-pipettor) to 50 uL of
medium/microtiter well prior to the on of 50 ul of cells. The usual starting
concentration of compound was 8 ug/mL after the 1/200 on into medium + cells
— compound concentrations decreased in 2x steps across the rows of the microtiter
plate. All MICs were done in duplicate.
All wells were ated with 50 pl of diluted cell suspension (see above) to a final
volume of 100 pl.
After inoculum was added, mixed each well ghly with a manual multichannel
pipettor; same tips were used going from low to high concentration of drug in the
same microtiter plate.
Plates were incubated at 37°C for at least 18 hours.
Plates were viewed with a test reading mirror after 18 hours and the MIC was
recorded as the lowest concentration of drug where no growth was observed (optical
y in the well).
Preparation of S. aureus + 50% human serum, S. aureus + 50% rat serum
or S. aureus + 50% mouse serum.
1. Prepared 50% serum media by combining 15 mL of MHII + 15 mL human serum —
total 30 mL. Increased volume in 30 mL increments when more than 1 compound
plate was tested.
Used the same BBL Prompt inoculum of S. aureus ATCC #29213 as described above,
diluted 1/200 by transferring 0.15 mL of cells into 30 mL (~5x105 cells/mL) of the
50% human serum media prepared above and swirled to mix.
Filled all test wells of the desired number of iter plates with 100 uL cells in
50% serum media.
Transferred 0.5 uL of each compound dilution (w/Matrix auto-pipettor) to 100 uL of
media. The usual starting concentration of nd was 8 ug/mL after the
1/200 dilution into medium + cells — compound concentrations decreased in 2x steps
across the rows of a microtiter plate. All MICs were done in duplicate.
Mixed each well thoroughly with a manual multichannel pipettor; same tips were used
going from low to high concentration of drug in the same microtiter plate.
Plates were incubated at 37°C for at least 18 hours. After incubation, added 25 [LL of
0.01% Resazurin to each well and continued to incubate at 37°C for at least 1
additional hour or until the Resazurin color changes.
Plates were Viewed with a test reading mirror and the MIC was recorded. When using
Resazurin, the color of the dye d from a dark blue to a bright pink in wells with
no growth. The lowest concentration of drug that turned the dye pink was the MIC.
Protocol 2: Gyrase MIC determination of compounds against Gram
negatives using microdilution broth method
Materials:
] Round bottom 96—well microtiter plates (Costar 3788)
Mueller Hinton II agar plates (MHII; BBL premix)
Mueller Hinton II liquid broth (MHII; BBL premix)
BBL Prompt Inoculation System (Fisher )
Test Reading Mirror (Fisher)
] Agar plates with ia streaked to single colonies, freshly prepared
e DMSO
Strains (MHII media for all; broth and agar):
1. Escherichia coli ATCC # 25922
899:5?!“ Escherichia coli, JMI collection strains, see table 5
Escherichia coli AG100 WT
Escherichia coli AG100 tolC
Acinetobacter baamannii ATCC # BAA-1710
Acinetobacter baamannii ATCC # 19606
Acinetobacter baamannii, JMI collection strains, see table 5
—56—
8. Klebsiella pneumoniae ATCC # 05
9. Klebsiella pneumoniae ATCC # 700603
. Klebsiella niae, JMI collection strains, see table 5
11. Moraxella catarrhalis ATCC# 25238
12. Moraxella catarrhalis ATCC# 49143
13.A40raxeflacxnarrhafis,Jhllcoflectknrsflains,seetable5
14. Haemophilus influenzae ATCC 49247
. Haemophilus influenzae (Rdl KW20) ATCC 51907
16. Haemophilus influenzae Rd0894 (AcrA—)
17. Haemophilus influenzae, JMI collection strains, see table 5
18. Pseudomonas aeruginosa PAOl
19. monas aeruginosa, JMI collection strains, see table 5
. Proteus mirabilis, JMI collection strains, see table 5
21. Enterobacter cloacae, JMI collection s, see table 5
22. Stenotrophomonas maltophilia ATCC BAA—84
23. Stenotrophomonas maltophilia ATCC13637
Inoculunlprep:
1. Using the BBL Prompt kit, picked 5 big or 10 small, well separated colonies from
cultures grown on agar medium and inoculated 1 mL sterile saline that came with the
2. Vortexed the wells for ~ 30 s to give a suspension of ~108 cells/mL. Actual density
could be confirmed by plating out ons of this suspension.
3. d the suspension 1/ 100 by transferring 0.15 mL of cells into 15 mL (~106
cells/mL) sterile broth (see below) for each plate of compounds tested, d to mix.
If more than 1 plate of compounds (> 8 compounds), including compound 12 or 13,
was to be tested, increased volumes accordingly.
4 [Bed50ulcdb(~5x104cdb)u)moGHMemmhnfimofimrweflcmumnmg
50 ul of the drug diluted in broth (see below).
Drug dilutions, inoculation, MIC determination:
1. All drug/compound stocks were ed at 12.8 mg/mL concentration, usually in
100% DMSO.
2. Diluted drug/compound stocks to 200x desired final tration in 50 [LL DMSO.
If starting concentration of MICs was 8 ug/mL final concentration, then required 6.25
[1L of stock + 43.75 [1L DMSO. Each 200x stock was placed in a separate row of
column 1 of a new 96 well microtiter plate.
3. Added 25 [LL of DMSO to columns 2 -12 of all rows of the microtiter plate containing
200x compound stocks and serially diluted 25 [LL from column 1 through column 11,
d tips after each column. i.e. 25 [LL compound + 25 [LL DMSO = 2x dilution.
Left “no compound” DMSO well at the end of the series for control.
4. For each strain tested, prepared two microtiter plates with 50 [LL of MHII broth using
a Matrix pipettor.
. Transferred 0.5 uL of each dilution (w/Matrix ipettor) to 50 [LL of
medium/microtiter well prior to the addition of 50 ul of cells. The usual starting
concentration of compound was 8 ug/mL after the 1/200 dilution into medium + cells
— compound concentrations decreased in 2x steps across the rows of a microtiter plate.
All MICs were done in duplicate.
6. All wells were inoculated with 50 pl of diluted cell suspension (see above) to a final
volume of 100 pl.
7. After inoculum was added, each well was mixed thoroughly with a manual
multichannel pipettor; same tips were used going from low to high concentration of
drug in the same microtiter plate.
8. Plates were incubated at 37°C for at least 18 hours.
9. Plates were viewed with a test reading mirror after 18 hours and the MIC was
recorded as the lowest concentration of drug where no growth was observed al
clarity in the well).
Protocol #3: Gyrase MIC ination of nds using Agar
dilution method
Materials:
Petri plates 60 x 15 mm (Thermo Scientific Cat. # 12567100)
Centrifuge tubes, 15 mL (Costar)
BBL Prompt Inoculation System (Fisher b26306)
Agar plates with ia streaked to single colonies, freshly prepared
Sterile DMSO
—58—
WO 97270
GasPakTM incubation containers (BD Cat. #260672)
GasPak TM EZ Anaerobe container system sachets (BD Cat. #260678)
{333173}; E2 {:02 ner system sachets (BD Cat. #260679)
Gasl‘ak TM EZ Campy container system sachets (BD Cat. #260680)
Strains:
l. Clostridium le ATCC BAA-1382;
pPOSQMer’N Clostridium diflz‘cile, CMI collection strains, see table 4
Clostriudium perfringens, CMI collection strains, see table 4
Bacteroidesfragilis and oides Spp., CMI collection strains, see table 4
Fusobacterium Spp., CMI collection strains, see table 4
treptococcus, Spp., CMI collections strains, see table 4
Prevotella Spp., CMI collection strains, see table 4
N. gonorrhoeae ATCC 35541
N. gonorrhoeae ATCC 49226
. Neisseria gonorrhoeae, JMI collection strains, see table 4
ll. Neisseria meningitidis, JMI collection strains, see table 4
Media preparation and growth conditions:
Growth medium recommended for each ial species was prepared ing tothe
CLSI publication ‘Ml l-A7 s for Antimicrobial Susceptibility Testing of
Anaerobic Bacteria; Approved Standard - Seventh Edition (2007)’ with the exception of
N. gonorrhoeae and N meningitidisfor which media was prepared according to"M07—A8
Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria that Grow
Aerobically; Approved Standard--Eighth Edition (2009)".
Plate pouring:
1. ed 100x drug stocks of each test compound as described in Table 1A. Used a
mL centrifuge tube, added 100 uL of each drug stock to 10 mL of molten agar
(cooled to ~ 55°C in water bath). Mixed by inverting tube 2 —3x then pour into
individually labeled 60X15 mm Petri dish.
2. Routine test concentrations were: 0.002 ug/mL — l6 ug/mL (14 plates).
3. Poured 4 drug free plates: 2 as positive control, 2 as c l.
4. Allowed plates to dry. Used same day or stored overnight at RT or stored up to
3daysat 4°C.
. Plates were labeled accordingly for drug concentration and strain ent.
] Growth of cells requiring the nance of an anaerobic environment:
1. All work performed with anaerobic bacteria was done as rapidly as possible; work
performed in biosafety cabinets (i.e., aerobic environment) was completed in less then
minutes before cells were returned to bic chambers.
2. Incubation of anaerobic bacteria was achieved using GasPakTM chambers. The large
box style chambers (VWR 90003—63 6) required 2 anaerobic sachets (VWR 90003—
642), while the tall cylinder style rs (VWR 90003—602) only required 1 sachet.
Plate inoculation (performed in ety cabinet):
1. Streaked each strain onto individual agar plates as described above. Incubated for
required time and environmental condition (i.e. anaerobic, microaerophilic, etc).
2. Used direct colony suspension method to d loopfuls of y streaked cells
into ~ 4 mL 0.9% NaClz and vortexed.
3. Adjusted suspension to O.D.600 0.05 (5x10e7 cfu/mL). ed to mix.
4. Transferred ~0.2 mL of adjusted, mixed cultures to a 96 well plate. When 5 5 strains
were tested, all strains were lined together in a single row. When testing > 5 strains,
transfered strains into plate with no more that 5 strains in a single row. This was
necessary to fit on the small plates.
. Used multi—channel pipettor, spotted 0.002 mL of each strain from prepared 96 well
plates onto each MIC test plate. This resulted in ~ lx10e5 cfu/spot. When testing C.
diflz‘cile, strains swarmed when grown, however ce between multi—channel
pipettor spots was far enough such that swarming cells did not impair assay results.
a. Inoculated2 drug free plates first, while the other 2 drug free plates were
inoculated last after the MIC test plates. The former and latter served as
growth and inoculation controls. Incubated one plate from each set of drug—
free controls under required atmospheric conditions with MIC plates and one
set aerobically to test for contamination with aerobic bacteria. Aerobic culture
was negative for growth when working with strict be or microaerophilic
strain. Some growth was visible with N. gonorrhoeae.
6. d inoculum to dry (for as short a time as necessary), then placed upside down
in GasPak with appropriate number of sachets and incubate.
7. Neisseriasppwere incubated at 37°C in a5% COzenvironment for 24h.
MIC determination:
Examined the test plates after the correct incubation time and read the MIC
endpoint at the concentration where a marked reduction occurred in the appearance of growth
on the test plate as compared to that of growth on the positive l .
Table 1A: Compound dilutions for MIC ination using the agar dilution method.
Final Volume
Volume Diluent, Intermediate Conc. (uL) added
Stock from stock DMSO Conc. At 1:100 to 10 mL
Steo u ml Source uL uL ** u/mL u mL aar
1,600 Stock 75 75 800 8 100
1,600 Stock 75 225 400 4 100
1,600 Stock 75 525 200 2 100
200 Step 4 75 75 100
200 Step 4 75 225 50 0.5 100
200 Ste 4 75 525 25 0.25 100
n-Step 7 75 75 12.5 0.125 100
Ste 7 75 225 6.25 0.06 100
Ste 7 75 525 3.1 0.03 100
--11 3 10 75 75 . 0.016 100
--12 3 10 75 . 0.008 100
--13 3 10 75 . 0.004 100
Step
14 0.4 13 75 . 0.002 100
*1,600 ug/ml = 64 ul (10mg/ml stock) + 336 ul DMSO; 400 ul total volume to start
**compound dissolved and diluted in 100%
DMSO
Protocol #4. MIC Determination Procedure for Mycobacterium species
Materials
Round bottom 96—well microtiter plates (Costar 3788) or r
Film plate seals (PerkinElmer, TopSeal-A #6005250 or similar)
Middlebrook 7H10 broth with 0.2% glycerol
brook 7H10 agar with 0.2% glycerol
Middlebrook OADC Enrichment
Inoculum Preparation for M. tuberculosis:
1. Used prepared frozen M. tuberculosis stock stored at —700C. M. tuberculosis was
grown in 7H10 broth + 10% OADC, then frozen at a concentration of 100 Klett or 5 x
107cfu/ml,
2. Prepared a 1:20 dilution by removal of 1 ml of the frozen stock and added it to 19 ml
of 7H10 broth + 10% OADC (final concentration 2.5 x 106cfu/ml).
3. From this dilution prepared a second 1:20 dilution, removed 1 ml and added it to 19
ml of fresh broth. This was the final inoculum to add to the 96—well plates.
Inoculum ation for M. kansasii, M. avium, M. sus and
Nocardia spc.:
1. Used prepared frozen stock of culture or a fresh culture grown in 7H10 broth at a
concentration of 10 Klett or 5 x 107/ml.
2. ed a 1:20 dilution by removing 1.0 ml of the culture stock and added it to 19 ml
of 7H10 broth (final concentration 2.5 x 106cfu/ml).
3. From this dilution prepared a 1:20 dilution, removed 1 ml and added it to 19 ml of
fresh broth (final sion).
Plate Preparation:
1. Labeled .
2. Added 50 pl of 7H10 broth + 10% OADC to all wells being utilized for MIC
determination using a multichannel electronic pipettor.
3. Prepared stock solutions of drugs (e.g. 1 mg/ml concentration) to be tested.
4. Thawed and diluted frozen stock solutions using 7H10 broth + 10% OADC to obtain
a g solution 4x the maximum concentration tested (e.g. final concentration 32
ug/ml, highest concentration tested was 8 ug/ml). Dilutions were made from the
stock solution. To start at a concentration of 1 ug/ml the drugs were prepared at 4
ug/ml, so the starting concentration was 1 ug/ml. Removed 25 ul of the 1mg/ml
stock and added to 6.2 ml of broth. All dilutions of drugs were done in broth.
. Added 50 ul of the 4x working on to the first well of the designated row.
Continued for all compounds to be tested. Using a multichannel onic pipettor,
mixed 4X and serial diluted compounds h the 11th well. Discarded remaining
50 ul. Used the 12th well as the positive control.
6. Incubated plates at 37° C M tuberculosis for ~18 days; M avium and M kansasii for
~7 days; Nocardia and M abcessus for ~4 days; with film seals.
2012/021275
7. Read visually and recorded the s. The MIC was ed as the lowest
tration of drug where no growth was observed (optical clarity in the well).
Protocol #5. Protocol for Mycobacterium tuberculosis Serum Shift MIC
Assay
Materials and reagents:
Costar #3 904 Black—sided, flat—bottom 96—well microtiter plates
Middlebrook 7H9 broth (BD271310) with 0.2% glycerol
Middlebrook OADC Enrichment
Fetal Bovine Serum
] Catalase (Sigma C1345)
Dextrose
NaClz
BBL Prompt Inoculation System (Fisher b26306)
Agar plates (Middlebrook 7H11 with 0.2% glycerol and OADC enrichment)
with bacteria ed to single colonies
Sterile DMSO
Media prep:
1. For serum shifted MICs, three different media were required which all had a base of
7H9 + 0.2% glycerol. It was important that all media and supplements were sterilized
prior to MICs.
2. Prepared all media below and inoculated as described in next section. Tested all
compounds against Mtb using each media.
a. 7H9 -- 0.2% glycerol -- 10% OADC (“standard” MIC media).
b. 7H9 -- 0.2% glycerol -- 2 g/L dextrose + 0.85 g/L NaCl + 0.003 g/L catalase
(0% FBS).
c. 2x 7H9 + 0.2% glycerol + 2 g/L dextrose + 0.85 g/L NaCl + 0.003 g/L
catalase combined with equal volume Fetal Bovine Serum (50% FBS).
Inoculum prep:
1. Using BBL Prompt, picked5-10 well-separated colonies and inoculated 1 ml sterile
saline that came in the kit. Typically plates were two to three weeks of age when used
for this assay due to the slow growth of this organism in culture.
2. Vortexed well, then sonicated in water bath for 30 sec providing a sion of ~108
ml. Actual density could be confirmed by plating out dilutions of this
suspension.
Prepared inoculum in each of the three media formulations by ng the BBL
Prompt suspension 1/200 (for example: erred 0.2 ml of cells to 40 ml of
medium) to obtain a starting cell density of ~106 cells/ml.
Used 100 pl cells (~5 X 104 cells) to inoculate each microtiter well containing 1 pl of
drug in DMSO (see below).
Drug dilutions, inoculation, MIC determination:
1. Control drug stocks Isoniazid and Novobiocin were prepared at 10 mM in 100%
DMSO while Ciprofloxacin and Rifampin were prepared at 1 mM in 50% DMSO and
100% DMSO, respectively. Prepared dilutions— dispensed 100 pL of the stock
solution into the first column of a l plate. Prepared 11-step, 2-fold serial
dilutions across the row for each compound by transferring 50 pl from column 1 into
50 pl of DMSO in column 2. Continued to transfer 50 pL from column 2 through
column 11 while mixing and changing tips at each column. Left column 12 with
DMSO only as a control.
Transferred 1 pl of each dilution into an empty microtiter well prior to the addition of
100 pl of cells. The ng concentration of Isoniazid and Novobiocin was 100 pM
after the on into medium + cells; the starting tration of Ciprofloxacin and
Rifampin was 10 pM after the dilution into medium + cells. Compound
concentrations decreased in 2x steps moving across the rows of the microtiter plate.
All MICs were done in duplicate at each of the three medium conditions.
Test sets of compounds were typically at 10 mM and 50 pL volume.
Used a multichannel pipettor, removed all of the volume from each column of the
master plate and transferred into the first column of a new 96-well microtiter plate.
Repeated for each column of compounds on master plate, transferring into column 1
of a new 96—well plate.
As described above for control compounds, ted 2-fold, 11—point dilutions of
each compound using DMSO as diluent. In all cases, left column 12 as DMSO only
for a control. Once all dilutions were complete, again transferred 1 pl of each dilution
into an empty microtiter well prior to the on of 100 pl of cells as done for the
control compounds.
WO 97270
.0909?” All wells were inoculated with 100 pl of diluted cell suspension (see above).
After inoculum addition, mixed plates by gently tapping sides of plate.
Plates were incubated in a humidified 37°C r for 9 days.
At 9 days added 25 pl 0.01% sterile resazurin to each well. Measured background
fluorescence at Excitation 492 nm, Emission 595 nm and returned the plate to the
incubator for another 24 hours.
After 24 hours the fluorescence of each well was ed at Excitation 492
nm, Emission 595 nm.
Percent inhibition by a given compound was calculated as follows: Percent
tion=100-([well fluorescence—average background fluorescence]/[DMSO control —
e background fluorescence] x100). MICs were scored for all three medium conditions
as the lowest compound concentration that inhibited resazurin reduction (‘%-inhibition’)
signal 270% at a given medium condition.
Table 2A shows the results of the MIC assay for the mesylate salt of the
benzimidazolyl urea compound of this invention.
In Table 2A and in subsequent Tables and Examples, und 13” relates
to the mesylate salt of Compound 12. Compounds 12 and 13 may be prepared by following
Examples 1.i and 1.j, respectively (above). These are the same numbers used to fy said
compounds and salts as used in the Examples above.
Table 2A — MIC Values of Selected Compounds
Strain/Special Condition Protocol Compound
Staphylococcus aureus 1 0.13
ATCC 29213
lococcus aureusATCC 1 0.31
29213 with Human Serum
Staphylococcus aureus 1 0.53
ATCC 29213 with Rat Serum
Staphylococcus aureus 1 2
ATCC 29213 with Mouse
Serum
Staphylococcus aureus 1 1.29
ATCC 29213 GyrB T173I
Enterococcusfaecalis ATCC 1 0.081
29212, with Laked Horse
Blood
Enterococcusfaecium ATCC 1 0.39
49624 with Laked Horse
—65—
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Strain/Special Condition Protocol Compound
Blood
Enterococcusfaecium ATCC 0.25
49624
Streptococcus pneumoniae 0.022
ATCC 10015, with Laked
Horse Blood
Bacillus cereus ATCC 10987
Bacillus cereus ATCC 14579
Bacillus subtilis ATCC 6638
Bacillus subtilis (168) ATCC
605 1
Clostridium diflicile ATCC
BAA— 1 3 82
Haemophilus nzae
ATCC 49247
Haemophilus influenzae (Rdl 2.5
KW20) ATCC 51907
Haemophilus influenzae 0.14
Rd0894 (AcrA-)
Moraxella halis ATCC 0.071
25238
Moraxella catarrhalis ATCC 0.04
49143
Neisseria g0n0rrh0eae 1.3
ATCC 35541
Neisseria g0n0rrh0eae 2.3
ATCC 49226
Escherichia c0li AG100 WT >16
ichia c0li AG100 tolC 0.11
Escherichia c0li ATCC [\JNN 16
25922
Escherichia c0li CHE30
Escherichia c0li CHE30 tolC
Escherichia c0li MC4100
Escherichia c0li MC4100 [\JNNN
tolC
ella pneumoniae
ATCC 700603
Klebsiella pneumoniae
ATCC BAA—1705
Acinetobacter baumannii
ATCC 19606
Acinetobacter baumannii
ATCC BAA—1710
Pseudomonas aeruginosa
PAOl
Strain/Special Condition ol Compound
Pseudomonas aeruginosa 0.33
PAO750
Stenotropbomonas Not done
maltopbilia ATCC BAA-84
Stenotropbomonas [\J Not done
maltopbilia 637
Mycobacterium avium 103 0.47
M. avium Far 0.94
M. avium 3404.4 0.94
Nocardia caviae 2497 2
N. asteroids 2039 ##-l>-l>-l>-l>-l>-I>J>J> 8
N. nova 10 8
M. kansasii 303 Not Done
M. kansasii 316 Not Done
M kansasii 379 Not Done
M tuberculosis H37RV 0.37
ATCC 25618
M tuberculosis Erdman J> 0.25
ATCC 35801
M ulosis Erdman U1 0.045
ATCC 35801
M tuberculosis Erdman U1 2
ATCC 35801 with Mouse
Serum
M abscessus BB2 \0t Done
M abscessus MC 6005 \ot Done
M abscessus MC 5931 \ot Done
M abscessus MC 5605 \ot Done
M abscessus MC 6025 \ot Done
M abscessus MC 5908 \ot Done
M abscessus BB3 \ot Done
M abscessus BB4 \ot Done
M abscessus BB5 \ot Done
M abscessus VIC 5922 \ot Done
M abscessus VIC 5960 \ot Done
M abscessus BB1 \ot Done
M abscessus VIC 5812 \ot Done
M abscessus VIC 5901 \ot Done
M abscessus BB6 \ot Done
M abscessus BB8 \ot Done
M abscessus VIC 5908 \ot Done
M abscessus LT 949 \ot Done
M abscessus BB10 \ot Done
M abscessus VIC 6142 \ot Done
M abscessus VIC 6136 \ot Done
M abscessus VIC 6111 ##-l>-l>-l>-l>-l>-I>J>J>J>J>J>J>-b-I>J>J>-b-I>J>J> \ot Done
—67—
Strain/Special Condition Protocol Compound
M. sus MC 6153 4 Not Done
] Table 3A shows the results of the MIC90 assay for selected compounds of this
invention.
Table 3A — MIC90 Values of Selected Compounds with Panels of Gram
Positive, Gram ve and Anaerobic Pathogens
Compound 13
Organism Number Protocol Range MIC90
0f (Hg/m1) (Hg/m1)
Isolates
Tested
Aerobic Gram-positive
Staphylococcus aureus 67 1 0.03— 0.25
Staphlococcus epidermidis 35 1 0.03— 0.12
0.25
Enterococcusfaecalis 34 1 0.03— 0.25
0.25
Enterococcusfaecium 33 1 0.12— 0.5
Streptococcus pneumoniae 67 1 0.015— 0.06
0.06
olytic streptococci s A, B, C 28 1 0.06— 0.25
and G) 0.5
Aerobic Gram-negative
Haemophilus influenzae 55 2 0.25— 8 2
Moraxella catarrhah's 26 2 0.015— 0.12
0.12
Acinetobacter baumannii 12 2 >8— >8 >8
Pseudomonas aeruginosa 12 2 >8— >8 >8
Escherichia coli 12 2 >8— >8 >8
Klebsiella pneumoniae 12 2 >8— >8 >8
Proteus mirabilis 12 2 >8— >8 >8
Enterobacter e 12 2 >8— >8 >8
Neisseria gonorrhoeae 13 3 0.5— 1 1
Neisseria meningitidis 12 3 0.015— 0.12
0.25
Anaerobes
Bacteroides and Parabacter spp. 26 3 2— >16 >16
Bacteroidesfragilis 25 3 8— >16 >16
Clostridium diflicile 16 3 0.5— 16 1
Clostridium perfringens 12 3 0.12— 0.5
nd 13
Organism Number Protocol Range MIC90
0f (Hg/m1) (Hg/m1)
Isolates
Tested
Fusobacterium Spp. 16 3 1-4 2
Peptostreptococcus Spp. 1 1 3 0.06— >16
Prevotella Spp. 13 3 05— >16 >16
In Table 4 below, the term “CMI” stands for The Clinical Microbiology
Institute located in Wilsonville, Oregon.
Table 4: Panels of bic Organism Used to Generate MIC90 Data
CMI# ORGANISM
A2380 B. fragilis
A2381 B. fragilis
A2382 B. fragilis
A2486 B. fragilis
A2487 B. fragilis
A2489 B. is
A2527 B. fragilis
A2529 B. fragilis
A2562 B. fragilis
A2627 B. fragilis
A2802 B. fragilis
A2803 B. fragilis
A2804 B. fragilis
A2805 B. is
A2806 B. fragilis
A2807 B. fragilis
A2808 B. fragilis
A2809 B. fragilis
CMI# ORGANISM
A2810 B. is
A2811 B. fragilis
A2812 B. fragilis
A2813 B. fragilis
A2814 B. is
A2460 B. thetaiotaomicron
A2462 B. thetaiotaomicron
A2463 B. thetaiotaomicron
A2464 B. thetaiotaomicron
A2536 B. thetaiotaomicron
A2591 B. uniformis
A2604 B. vulgatus
A2606 B. vulgatus
A2613 B. ovatus
A2616 B. ovatus
A2815 Bacteroides tectum
A2816 B. ureolyticus
A2817 Bacteroides capillosus
CMI# ORGANISM
A2818 B. ureolyticus
A2824 Parabacter distasonis
A2825 B. ovatus
A2826 B. uniformis
A2827 B. uniformis
A2828 B. vulgatus
A2829 B. vulgatus
A2830 B. ovatus
A2831 B. thetaiotaomicron
A2832 Parabacter distasonis
A2833 B. thetaiotaomicron
A2767 C. diflicile
A2768 C. diflicile
A2769 C. diflicile
A2770 C. le
A2771 C. diflicile
A2772 C. le
A2773 C. diflicile
CMI# SM
A2774 C. diflicile
A2775 C. diflicile
A2776 C. diflicile
A2777 C. diflicile
A2778 C. diflicile
A2779 C. le
A2780 C. diflicile
A2140 C. perfringens
A2203 C. perfringens
A2204 C. perfringens
A2227 C. perfringens
A2228 C. perfringens
A2229 C. perfringens
A2315 C. perfringens
A2332 C. perfringens
A2333 C. perfringens
A2334 C. perfringens
A2389 C. perfringens
CMI# ORGANISM
A2390 C. perfringens
A864 F. necrophorum
A871 F. tum
A1667 F. necrophorum
A1666 F necrophorum
A2249 F tum
A2716 Fusobacterium species
A2717 Fusobacterium species
A2719 Fusobacterium species
A2721 Fusobacterium species
A2722 Fusobacterium species
A2710 Fusobacterium species
A2711 Fusobacterium species
A2712 Fusobacterium species
A2713 cterium species
A2714 Fusobacterium species
A2715 Fusobacterium species
A1594 Peptostreptococcus anaerobius
CMI# ORGANISM
A2 15 8 Peptostreptococcus magnus
A2168 Peptostreptococcus anaerobius
A2170 Peptostreptococcus magnus
A2 17 1 Peptostreptococcus magnus
A2575 Peptostreptococcus Spp.
A2579 Peptostreptococcus asaccharolyticus
A2580 Peptostreptococcus asaccharolyticus
A2614 Peptostreptococcus asaccharolyticus
A2620 Peptostreptococcus asaccharolyticus
A2629 Peptostreptococcus Spp.
A2739 Prevotella denticola
A2752 Prevotella bivia
A2753 Prevotellaintermedia
A2754 Prevotellaintermedia
A2756 Prevotella bivia
A2759 ella bivia
A2760 Prevotella denticola
A2761 Prevotella intermedia
CMI# ORGANISM
A2762 Prevotella melaninogenica
A2765 Prevotella melaninogenica
A2766 Prevotella melaninogenica
A2821 Prevotella bivia
A2822 Prevotella bivia
QCBF B. is
QCBT B. thetaiotaomicron
QCCD C. diflicile
QCBF B. fragilis
QCBT B. thetaiotaomicron
QCCD C. diflicile
In Table 5 below, the term “JMI” stands for The Jones Microbiology Institute
located in North Liberty, Iowa.
Table 5: Panels of Gram ve and Gram Negative Organism Used to
Generate MIC90 Data
JMI Organism
JMI Isolate # Organism
394 ACB Acinetobacter baumannii
2166 ACB Acinetobacter baumannii
3060 ACB Acinetobacter nii
3170 ACB Acinetobacter baumannii
9328 ACB Acinetobacter baumannii
9922 ACB Acinetobacter baumannii
13 618 ACB Acinetobacter baumannii
14308 ACB Acinetobacter baumannii
17086 ACB obacter baumannii
17176 ACB Acinetobacter nii
30554 ACB obacter baumannii
32007 Acinetobacter baumannii
1 192 ECL Enterobacter cloacae
3096 lfiflerobackwcfloacae
5534 Enterobacter cloacae
6487 Enterobacter e
9592 Enterobacter cloacae
11680 lfiflerobackwcfloacae
12573 ECL Enterobacter cloacae
12735 ECL Enterobacter cloacae
13057 ECL Enterobacter cloacae
18048 ECL Enterobacter cloacae
173 ECL Enterobacter cloacae
29443 ECL Enterobacter cloacae
44 iEF lfiflerococcusfbecafis
355 iEF lfiflerococcusfbecafis
886 iEF lfiflerococcusfbecafis
955 iEF lfiflerococcusfbecafis
1000 Enterococcusfaecalis
1053 Enterococcusfaecalis
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JMI Organism
JMI Isolate # Code sm
1142 Enterococcusfaecalis
1325 Enterococcusfaecalis
1446 Enterococcusfaecalis
2014 Enterococcusfaecalis
2103 EF Enterococcusfaecalis
2255 EF Enterococcusfaecalis
2978 EF Enterococcusfaecalis
2986 EF Enterococcusfaecalis
5027 Enterococcusfaecalis
5270 Enterococcusfaecalis
5874 Enterococcusfaecalis
7430 Enterococcusfaecalis
7904 Enterococcusfaecalis
8092 EF Enterococcusfaecalis
8691 EF Enterococcusfaecalis
9090 EF Enterococcusfaecalis
10795 EF Enterococcusfaecalis
14104 EF Enterococcusfaecalis
16481 Enterococcusfaecalis
18217 coccusfaecalis
22442 Enterococcusfaecalis
25726 Enterococcusfaecalis
26143 Enterococcusfaecalis
2813 1 EF Enterococcusfaecalis
29765 EF Enterococcusfaecalis
30279 EF Enterococcusfaecalis
31234 EF Enterococcusfaecalis
31673 EF Enterococcusfaecalis
115 Enterococcusfaecium
227 EFM Enterococcusfaecium
—78—
JMI sm
JMI Isolate # Code Organism
414 coccusfaecium
712 Enterococcusfaecium
870 Enterococcusfaecium
911 Enterococcusfaecium
2356 Enterococcusfaecium
2364 Enterococcusfaecium
2762 Enterococcusfaecium
3062 Enterococcusfaecium
4464 coccusfaecium
4473 Enterococcusfaecium
4653 Enterococcusfaecium
4679 Enterococcusfaecium
6803 Enterococcusfaecium
6836 Enterococcusfaecium
8280 Enterococcusfaecium
8702 Enterococcusfaecium
9855 Enterococcusfaecium
10766 Enterococcusfaecium
12799 Enterococcusfaecium
13556 Enterococcusfaecium
13783 Enterococcusfaecium
14687 Enterococcusfaecium
15268 Enterococcusfaecium
15525 Enterococcusfaecium
15538 Enterococcusfaecium
18102 Enterococcusfaecium
18306 Enterococcusfaecium
19967 Enterococcusfaecium
22428 Enterococcusfaecium
23482 Enterococcusfaecium
JMI Organism
JMI Isolate # Organism
29658 EFM Enterococcusfaecium
597 EC Escherichia coli
847 EC ichia coli
1451 EC Escherichia coli
8682 EC Escherichia coli
11 199 EC Escherichia coli
12583 EC Escherichia coli
12792 EC Escherichia coli
13265 Escherichia coli
14594 Escherichia coli
22148 Escherichia coli
29743 Escherichia coli
30426 Escherichia coli
470 Group A Streptococcus
2965 Group A Streptococcus
3112 Group A Streptococcus
3637 Group A Streptococcus
4393 Group A Streptococcus
4546 BSA Group A Streptococcus
4615 BSA Group A Streptococcus
5848 BSA Group A ococcus
6194 BSA Group A Streptococcus
8816 BSA Group A ococcus
1 1814 Group A Streptococcus
16977 Group A Streptococcus
18083 Group A Streptococcus
18821 Group A Streptococcus
25178 Group A Streptococcus
30704 BSA Group A Streptococcus
12 BSB Group B Streptococcus
JMI Organism
JMI Isolate # sm
103 66 BSB Group B Streptococcus
10611 BSB Group B Streptococcus
16786 BSB Group B Streptococcus
18833 BSB Group B Streptococcus
30225 BSB Group B Streptococcus
10422 BSC Group C Streptococcus
14209 BSC Group C Streptococcus
29732 BSC Group C Streptococcus
8544 BSG Group G Streptococcus
18086 BSG Group G Streptococcus
29815 BSG Group G Streptococcus
147 Haemophilus influenzae
180 hilus influenzae
934 HI Haemophilus influenzae
970 HI Haemophilus influenzae
1298 HI Haemophilus influenzae
1819 HI Haemophilus zae
1915 HI Haemophilus influenzae
2000 hilus influenzae
2562 Haemophilus influenzae
2821 Haemophilus influenzae
3133 Haemophilus influenzae
3140 Haemophilus influenzae
3497 HI Haemophilus influenzae
3508 HI Haemophilus influenzae
3535 HI Haemophilus influenzae
4082 HI Haemophilus influenzae
4108 HI Haemophilus zae
4422 Haemophilus influenzae
4868 Haemophilus influenzae
JMI Organism
JMI Isolate # Organism
4872 Haemophilus influenzae
585 8 hilus zae
625 8 Haemophilus influenzae
6875 hilus influenzae
7063 HI Haemophilus influenzae
7600 HI Haemophilus influenzae
8465 HI Haemophilus influenzae
10280 HI hilus zae
10732 Haemophilus influenzae
10850 Haemophilus influenzae
113 66 Haemophilus influenzae
11716 Haemophilus influenzae
11724 Haemophilus influenzae
11908 HI Haemophilus influenzae
12093 HI Haemophilus influenzae
12107 HI Haemophilus influenzae
13424 HI Haemophilus influenzae
13439 HI Haemophilus influenzae
13 672 Haemophilus influenzae
13 687 Haemophilus influenzae
13 792 Haemophilus influenzae
13 793 Haemophilus influenzae
14440 Haemophilus zae
153 51 HI Haemophilus influenzae
153 56 HI Haemophilus influenzae
15678 HI Haemophilus influenzae
800 HI Haemophilus influenzae
17841 HI Haemophilus influenzae
18614 Haemophilus influenzae
25195 Haemophilus influenzae
JMI Organism
JMI Isolate # Organism
27021 Haemophilus influenzae
28326 Haemophilus influenzae
28332 Haemophilus influenzae
29918 hilus influenzae
29923 HI Haemophilus influenzae
31911 HI Haemophilus influenzae
428 KP\ Klebsiella niae
791 KP\ Klebsiella pneumoniae
836 KP\ Klebsiella pneumoniae
1422 KP\ Klebsiella pneumoniae
1674 KP\ Klebsiella pneumoniae
1883 Klebsiella pneumoniae
6486 KP\ Klebsiella niae
8789 Klebsiella pneumoniae
10705 Klebsiella pneumoniae
1 1123 Klebsiella pneumoniae
28148 Klebsiella pneumoniae
29432 Klebsiella pneumoniae
937 Moraxella catarrhalis
1290 lla catarrhalis
1830 Moraxella catarrhalis
1903 Moraxella catarrhalis
4346 Moraxella catarrhalis
4880 Moraxella catarrhalis
6241 lla catarrhalis
6551 Moraxella catarrhalis
7074 lla catarrhalis
7259 Moraxella catarrhalis
7544 Moraxella catarrhalis
8142 Moraxella catarrhalis
JMI sm
JMI Isolate # Organism
8451 Moraxella halis
9246 Moraxella catarrhalis
9996 Moraxella catarrhalis
12158 Moraxella catarrhalis
13443 A40raxeflacxnarrhafis
13692 A40raxeflacxnarrhafis
13817 A40raxeflacxnarrhafis
14431 A40raxeflacxnarrhafis
14762 Moraxella catarrhalis
14842 Moraxella catarrhalis
15361 Moraxella catarrhalis
15741 Moraxella catarrhalis
17843 Moraxella catarrhalis
18639 \4CUXT A40raxeflacxflarrhal$
241 GC Neisseria gonorrhoeae
291 GC Neisseria gonorrhoeae
293 GC ria gonorrhoeae
344 GC Neisseria gonorrhoeae
451 Neisseria hoeae
474 Neisseria gonorrhoeae
491 Neisseria gonorrhoeae
493 Neisseria gonorrhoeae
503 ria gonorrhoeae
521 GC Neisseria gonorrhoeae
552 GC Neisseria gonorrhoeae
573 GC Neisseria gonorrhoeae
592 GC ria gonorrhoeae
NM Neisseria meningitidis
813 Neisseria meningitidis
1725 Neisseria meningitidis
JMI Organism
JMI Isolate # Code Organism
2747 \VI Neisseria meningitidis
3201 Neisseria meningitidis
3335 Neisseria meningitidis
7053 Neisseria meningitidis
9407 \VI Neisseria meningitidis
10447 \V1 Neisseria meningitidis
12685 \V1 Neisseria meningitidis
12841 \V1 Neisseria meningitidis
14038 Neisseria meningitidis
1127 s mirabilis
3049 PVI Proteus mirabilis
4471 Proteus mirabilis
8793 PVI Proteus mirabilis
10702 PVI Proteus mirabilis
1 1218 PVI Proteus mirabilis
14662 PVI Proteus mirabilis
17072 PVI Proteus mirabilis
19059 PVI Proteus mirabilis
23367 PVI Proteus mirabilis
29819 PVI s lis
31419 PVI Proteus mirabilis
1881 PSA Pseudomonas aeruginosa
5061 PSA Pseudomonas aeruginosa
7909 Pseudomonas aeruginosa
8713 Pseudomonas aeruginosa
143 18 Pseudomonas aeruginosa
14772 monas aeruginosa
155 12 Pseudomonas nosa
17093 PSA Pseudomonas aeruginosa
17802 PSA Pseudomonas aeruginosa
—85—
WO 97270
JMI Organism
JMI Isolate # Code Organism
19661 PSA Pseudomonas aeruginosa
29967 PSA Pseudomonas aeruginosa
31539 PSA Pseudomonas aeruginosa
82 SA Staphylococcus aureus
99 SA Staphylococcus aureus
13 8 SA Staphylococcus aureus
13 9 SA Staphylococcus aureus
140 SA Staphylococcus aureus
141 Staphylococcus aureus
142 Staphylococcus aureus
272 Staphylococcus aureus
287 Staphylococcus aureus
354 Staphylococcus aureus
382 SA Staphylococcus aureus
11 12 SA Staphylococcus aureus
1687 SA Staphylococcus aureus
1848 SA Staphylococcus aureus
2031 SA Staphylococcus aureus
2159 Staphylococcus aureus
2645 Staphylococcus aureus
3256 Staphylococcus aureus
3276 lococcus aureus
4044 Staphylococcus aureus
4214 SA Staphylococcus aureus
4217 SA Staphylococcus aureus
4220 SA Staphylococcus aureus
4231 SA Staphylococcus aureus
4240 SA Staphylococcus aureus
4262 lococcus aureus
4370 Staphylococcus aureus
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JMI Organism
JMI Isolate # Organism
4665 Staphylococcus aureus
4666 Staphylococcus aureus
4667 Staphylococcus aureus
5026 Staphylococcus aureus
5666 SA Staphylococcus aureus
6792 SA Staphylococcus aureus
7023 SA Staphylococcus aureus
7461 SA Staphylococcus aureus
7899 Staphylococcus aureus
7901 Staphylococcus aureus
8714 Staphylococcus aureus
9374 Staphylococcus aureus
9437 Staphylococcus aureus
10056 SA Staphylococcus aureus
101 10 SA Staphylococcus aureus
1 1379 SA Staphylococcus aureus
1 1629 SA Staphylococcus aureus
1 1659 SA Staphylococcus aureus
12788 lococcus aureus
12789 Staphylococcus aureus
13043 Staphylococcus aureus
13086 lococcus aureus
13721 Staphylococcus aureus
13742 SA Staphylococcus aureus
13932 SA Staphylococcus aureus
14210 SA Staphylococcus aureus
143 84 SA Staphylococcus aureus
15428 SA Staphylococcus aureus
15430 Staphylococcus aureus
17721 Staphylococcus aureus
—87—
JMI Organism
JMI Isolate # Organism
18688 Staphylococcus aureus
19095 Staphylococcus aureus
20195 Staphylococcus aureus
22141 lococcus aureus
22689 SA Staphylococcus aureus
27398 SA Staphylococcus aureus
29048 SA Staphylococcus aureus
29051 SA Staphylococcus aureus
30491 Staphylococcus aureus
30538 Staphylococcus aureus
Staphylococcus epidermidis
53 Staphylococcus epidermidis
385 Staphylococcus epidermidis
398 Staphylococcus epidermidis
701 Staphylococcus epidermidis
713 Staphylococcus epidermidis
13 81 Staphylococcus epidermidis
2174 Staphylococcus epidermidis
2286 Staphylococcus epidermidis
2969 Staphylococcus epidermidis
3417 Staphylococcus epidermidis
3447 Staphylococcus epidermidis
4753 lococcus epidermidis
7241 Staphylococcus epidermidis
9366 Staphylococcus epidermidis
10665 lococcus midis
1 1792 Staphylococcus epidermidis
123 1 1 Staphylococcus epidermidis
13036 lococcus epidermidis
13227 Staphylococcus epidermidis
JMI Organism
JMI Isolate # Code Organism
13243 Staphylococcus midis
13 621 Staphylococcus epidermidis
13 63 8 Staphylococcus epidermidis
13 800 Staphylococcus epidermidis
14078 Staphylococcus epidermidis
14392 Staphylococcus epidermidis
15007 Staphylococcus epidermidis
16733 Staphylococcus epidermidis
18871 Staphylococcus epidermidis
23285 lococcus epidermidis
27805 lococcus epidermidis
29679 Staphylococcus epidermidis
29985 Staphylococcus epidermidis
30259 Staphylococcus epidermidis
31444 Staphylococcus epidermidis
268 Streptococcus pneumoniae
1264 Streptococcus pneumoniae
2482 ococcus pneumoniae
2653 Streptococcus pneumoniae
2994 Streptococcus pneumoniae
3123 Streptococcus pneumoniae
3124 Streptococcus pneumoniae
4336 Streptococcus pneumoniae
4858 ococcus pneumoniae
5606 Streptococcus niae
5881 Streptococcus pneumoniae
5897 Streptococcus pneumoniae
5900 Streptococcus pneumoniae
605 1 Streptococcus pneumoniae
6216 Streptococcus pneumoniae
JMI Organism
JMI Isolate # Code sm
6556 Streptococcus pneumoniae
7270 Streptococcus pneumoniae
7584 Streptococcus pneumoniae
8479 Streptococcus niae
8501 Streptococcus pneumoniae
9256 Streptococcus niae
9257 Streptococcus niae
10246 Streptococcus pneumoniae
10467 Streptococcus niae
10886 Streptococcus pneumoniae
11217 ococcus pneumoniae
11228 Streptococcus pneumoniae
11238 Streptococcus pneumoniae
11757 Streptococcus pneumoniae
11768 Streptococcus pneumoniae
12121 Streptococcus pneumoniae
12124 Streptococcus pneumoniae
12149 Streptococcus pneumoniae
12767 Streptococcus pneumoniae
12988 Streptococcus pneumoniae
13321 Streptococcus pneumoniae
13393 Streptococcus pneumoniae
13521 Streptococcus pneumoniae
13544 Streptococcus pneumoniae
13700 Streptococcus pneumoniae
13704 Streptococcus pneumoniae
13822 Streptococcus pneumoniae
13838 Streptococcus pneumoniae
14131 Streptococcus pneumoniae
14413 Streptococcus pneumoniae
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JMI Organism
JMI e # Code Organism
14744 Streptococcus pneumoniae
14808 Streptococcus pneumoniae
14827 Streptococcus pneumoniae
14835 Streptococcus pneumoniae
14836 Streptococcus pneumoniae
15832 Streptococcus pneumoniae
17336 Streptococcus pneumoniae
17343 Streptococcus pneumoniae
17349 Streptococcus pneumoniae
17735 Streptococcus niae
18060 Streptococcus pneumoniae
18567 Streptococcus pneumoniae
18595 Streptococcus pneumoniae
19082 Streptococcus pneumoniae
19826 Streptococcus pneumoniae
22174 Streptococcus pneumoniae
22175 Streptococcus pneumoniae
27003 Streptococcus pneumoniae
28310 Streptococcus pneumoniae
28312 ococcus pneumoniae
29890 Streptococcus pneumoniae
29910 Streptococcus pneumoniae
Claims (4)
1. A solid compound of formula (I): or a salt thereof.
2. The solid compound of claim 1, wherein said solid is a solid Form I free base having an X-ray powder diffraction pattern (XPRD) comprising at least three approximate peak positions (degrees 2 θ ± 0.2) when measured using Cu Kα radiation, selected from the group ting of 9.3, 11.7, 12.4, 13.8, 14.6, 16.0, 16.2, 16.7, 18.6, 18.9, 19.6, 20.2, 20.5, 21.3, 21.7, 22.7, 23.9, 24.5, 24.9, 25.8, 26.7, 27.9, 28.1, 28.4, 30.4, 33.5, and 37.4, when the XPRD is collected from about 5 to about 38 s 2 θ.
3. The solid compound of claim 2, n said solid Form I has an X-ray powder diffraction pattern (XPRD) comprising at least three approximate peak positions (degrees 2 θ ± 0.2) when measured using Cu Kα radiation, selected from the group consisting of 9.3, 16.7, 18.6, 19.6, 21.7, and 25.8, when the XPRD is collected from about 5 to about 38 degrees 2 θ.
4. The solid compound of claim 2 or 3, wherein said solid Form I has an X-ray powder diffraction pattern, as measured using Cu Kα ion, substantially similar to
Applications Claiming Priority (3)
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US201161433161P | 2011-01-14 | 2011-01-14 | |
US61/433,161 | 2011-01-14 | ||
PCT/US2012/021275 WO2012097270A1 (en) | 2011-01-14 | 2012-01-13 | Solid forms of gyrase inhibitor (r)-1-ethyl-3-[5-[2-{1-hydroxy-1-methyl-ethyl}pyrimidin-5-yl]-7-(tetrahydrofuran-2-yl}-1h-benzimidazol-2-yl]urea |
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NZ612912A NZ612912A (en) | 2015-10-30 |
NZ612912B2 true NZ612912B2 (en) | 2016-02-02 |
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