WO2006122014A2 - Bicyclic derivatives as modulators of ion channels - Google Patents
Bicyclic derivatives as modulators of ion channels Download PDFInfo
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- WO2006122014A2 WO2006122014A2 PCT/US2006/017699 US2006017699W WO2006122014A2 WO 2006122014 A2 WO2006122014 A2 WO 2006122014A2 US 2006017699 W US2006017699 W US 2006017699W WO 2006122014 A2 WO2006122014 A2 WO 2006122014A2
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- 0 NN(C1CCC=CCCCC1)S(Cc1ccc(CCCCCCC*C2)c2c1)(=O)=O Chemical compound NN(C1CCC=CCCCC1)S(Cc1ccc(CCCCCCC*C2)c2c1)(=O)=O 0.000 description 3
- VZWXIQHBIQLMPN-UHFFFAOYSA-N C1COc2ccccc2C1 Chemical compound C1COc2ccccc2C1 VZWXIQHBIQLMPN-UHFFFAOYSA-N 0.000 description 1
- WPWNEKFMGCWNPR-UHFFFAOYSA-N C1CSc2ccccc2C1 Chemical compound C1CSc2ccccc2C1 WPWNEKFMGCWNPR-UHFFFAOYSA-N 0.000 description 1
- WNRLMOJJTWCJAV-UHFFFAOYSA-N CC1(C)N=NON1 Chemical compound CC1(C)N=NON1 WNRLMOJJTWCJAV-UHFFFAOYSA-N 0.000 description 1
- IAEKOXNGVYKEKS-UHFFFAOYSA-N CC1=NCCN=C1 Chemical compound CC1=NCCN=C1 IAEKOXNGVYKEKS-UHFFFAOYSA-N 0.000 description 1
- AWPAAILWWGKSIF-UHFFFAOYSA-N CCOc(c(Cl)c1)ccc1Cl Chemical compound CCOc(c(Cl)c1)ccc1Cl AWPAAILWWGKSIF-UHFFFAOYSA-N 0.000 description 1
- YUTQRQJTFPEEPB-UHFFFAOYSA-N Cc1c[s]nc1 Chemical compound Cc1c[s]nc1 YUTQRQJTFPEEPB-UHFFFAOYSA-N 0.000 description 1
- KZNRNQGTVRTDPN-UHFFFAOYSA-N Cc1ccc(C)c(Cl)c1 Chemical compound Cc1ccc(C)c(Cl)c1 KZNRNQGTVRTDPN-UHFFFAOYSA-N 0.000 description 1
- LBBKWEDRPDGXPM-UHFFFAOYSA-N Cc1ccn[s]1 Chemical compound Cc1ccn[s]1 LBBKWEDRPDGXPM-UHFFFAOYSA-N 0.000 description 1
- WOTIUKDGJBXFLG-UHFFFAOYSA-N Cc1n[s]cc1 Chemical compound Cc1n[s]cc1 WOTIUKDGJBXFLG-UHFFFAOYSA-N 0.000 description 1
- WCUMFMHNYNLLBE-UHFFFAOYSA-N Cc1n[s]nc1 Chemical compound Cc1n[s]nc1 WCUMFMHNYNLLBE-UHFFFAOYSA-N 0.000 description 1
- BLUDKPWYPAXPEJ-UHFFFAOYSA-N O=C(C(F)(F)F)N1Cc2cc(S(Nc3ncc[s]3)(=O)=O)ccc2CC1 Chemical compound O=C(C(F)(F)F)N1Cc2cc(S(Nc3ncc[s]3)(=O)=O)ccc2CC1 BLUDKPWYPAXPEJ-UHFFFAOYSA-N 0.000 description 1
- UGFKMHXUQDVNLH-UHFFFAOYSA-N O=S(c1ccc(CCNC2)c2c1)(Nc1ncc[s]1)=O Chemical compound O=S(c1ccc(CCNC2)c2c1)(Nc1ncc[s]1)=O UGFKMHXUQDVNLH-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present invention relates to compounds useful as inhibitors of ion channels.
- the invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.
- Na channels are central to the generation of action potentials in all excitable cells such as neurons and myocytes! They play key roles in excitable tissue including brain, smooth muscles of the gastrointestinal tract, skeletal muscle, the peripheral nervous system, spinal cord and airway. As such they play key roles in a variety of disease states such as epilepsy (See, Moulard, B. and D. Bertrand (2002) “Epilepsy and sodium channel blockers” Expert Opin. Ther. Patents 12(1): 85-91)), pain (See, Waxman, S. G., S. Dib-Hajj, et al. (1999) "Sodium channels and pain” Proc Natl Acad Sci U S A 96(14): 7635-9 and Waxman, S.
- Voltage gated Na channels comprise a gene family consisting of 9 different subtypes (NaVl.1-NaVl.9). As shown in Table A, these subtypes show tissue specific localization and functional differences (See, Goldin, A. L. (2001) "Resurgence of sodium channel research” Annu Rev Physiol 63: 871-94). Three members of the gene family (NaVl.8, 1.9, 1.5) are resistant to block by the well-known Na channel blocker TTX, demonstrating subtype specificity within this gene family. Mutational analysis has identified glutamate 387 as a critical residue for TTX binding (See, Noda, M., H. Suzuki, et al. (1989) "A single point mutation confers tetrodotoxin and saxitoxin insensitivity on the sodium channel II" FEBS Lett 259(1): 213-6).
- CNS central nervous system
- PNS peripheral nervous sytem
- DRG dorsal root ganglion
- TG Trigeminal ganglion
- NaVs voltage-gated sodium channels
- Antagonists of NaV channels can attenuate these pain signals and are useful for treating a variety of pain conditions, including but not limited to acute, chronic, inflammatory, and neuropathic pain.
- Known NaV antagonists such as TTX, lidocaine (See, Mao, J. and L. L. Chen (2000) "Systemic lidocaine for neuropathic pain relief Pain 87(1): 7-17.) bupivacaine, phenytoin (See, Jensen, T. S.
- Hyperalgesia extreme sensitivity to something painful
- tissue injury or inflammation reflects, at least in part, an increase in the excitability of high-threshold primary afferent neurons innervating the site of injury.
- Voltage sensitive sodium channels activation is critical for the generation and propagation of neuronal action potentials.
- modulation of NaV currents is an endogenous mechanism used to control neuronal excitability (See, Goldin, A. L. (2001) "Resurgence of sodium channel research" Annu Rev Physiol 63: 871-94.).
- TTX-resistant currents are insensitive to micromolar concentrations of tetrodotoxin, and displays slow activation and inactivation kinetics and a more depolarized activation threshold when compared to other voltage-gated sodium channels.
- TTX-resistant sodium currents are primarily restricted to a subpopulation of sensory neurons likely to be involved in nociception. Specifically, TTX-resistant sodium currents are expressed almost exclusively in neurons that have a small cell-body diameter; and give rise to small-diameter slow-conducting axons and that are responsive to capsaicin.
- a large body of experimental evidence demonstrates that TTX-resistant sodium channels are expressed on C-fibers and are important in the transmission of nociceptive information to the spinal cord.
- NaVl.8 protein is upregulated along uninjured C-fibers adjacent to the nerve injury.
- Antisense treatment prevents the redistribution of NaV 1.8 along the nerve and reverses neuropathic pain.
- NaVl.3 The biophysics of the NaVl.3 channel is distinctive in that it shows very fast repriming after inactivation following an action potential. This allows for sustained rates of high firing as is often seen in the injured nerve (See, Cummins, T. R., F. Aglieco, et al. (2001) "Navl.3 sodium channels: rapid repriming and slow closed-state inactivation display quantitative differences after expression in a mammalian cell line and in spinal sensory neurons" J Neurosci 21(16): 5952-61.). NaVl.3 is expressed in the central and peripheral systems of man.
- NaV 1.9 is similar to NaV 1.8 as it is selectively localized to small sensory neurons of the dorsal root ganglion and trigeminal ganglion (See, Fang, X., L. Djouhri, et al. (2002). "The presence and role of the tetrodotoxin-resistant sodium channel Na(v)1.9 (NaN) in nociceptive primary afferent neurons.” J Neurosci 22(17): 7425-33.). It has a slow rate of inactivation and left-shifted voltage dependence for activation (See, Dib- Hajj, S., J. A. Black, et al.
- NaVl.9 a sodium channel with unique properties
- Trends Neurosci 25(5): 253-9. These two biophysical properties allow NaVl.9 to play a role in establishing the resting membrane potential of nociceptive neurons.
- the resting membrane potential of NaVl.9 expressing cells is in the -55 to -5OmV range compared to — 65mV for most other peripheral and central neurons.
- This persistent depolarization is in large part due to the sustained low-level activation of NaVl.9 channels. This depolarization allows the neurons to more easily reach the threshold for firing action potentials in response to nociceptive stimuli.
- Compounds that block the NaV 1.9 channel may play an important role in establishing the set point for detection of painful stimuli.
- NaVl.8 and NaVl.7 are termed neuromas and the primary Na channels expressed in them.
- NaVl.6 and NaVl.7 are also expressed in dorsal root ganglion neurons and contribute to the small TTX sensitive component seen in these cells.
- NaVl.7 in particular my therefore be a potential pain target in addition to it's role in neuroendocrine excitability (See, Klugbauer, N., L. Lacinova, et al. (1995) "Structure and functional expression of a new member of the tetrodotoxin- sensitive voltage-activated sodium channel family from human neuroendocrine cells” Embo J 14(6): 1084-90).
- NaVl.1 See, Sugawara, T., E. Mazaki-Miyazaki, et al. (2001)
- Antagonists for NaV1.5 have been developed and used to treat cardiac arrhythmias.
- a gene defect in NaV 1.5 that produces a larger noninactivating component to the current has been linked to long QT in man and the orally available local anesthetic mexilitine has been used to treat this condition (See, Wang, D. W., K. Yazawa, et al. (1997) "Pharmacological targeting of long QT mutant sodium channels.” J Clin Invest 99(7): 1714- 20).
- Narasimhan (1997) “Sodium channels and therapy of central nervous system diseases” Adv Pharmacol 39: 47-98) and as anesthetics (See, Strichartz, G. R., Z. Zhou, et al. (2002) "Therapeutic concentrations of local anaesthetics unveil the potential role of sodium channels in neuropathic pain.” Novartis Found Svmp 241: 189-201).
- Chronic headache pain see, Willimas & Stark, Cephalalgia. 2003; 23(10):963-71
- migraine see, Yamamura, H., et al., J Neurophysiol. 1999; 81(2):479-93
- tension headache including, cluster headaches (see, Costa, A., et al., Cephalalgia. 2000; 20(2):85-91); chronic neuropathic pain, including, post-herpetic neuralgia (see, Attal, N., et al., Neurology.
- central pain (Cahana, A., et al., Anesth Analg. 2004; 98(6): 1581-4), spinal cord injury pain (see, Hains, B. C, et al., Exp Neurol. 2000; 164(2):426-37); post-stroke pain; thalamic pain (see, LaBuda, C. J., et al., Neurosci Lett. 2000; 290(l):79-83); complex regional pain syndrome (see, Wallace, M. S., et al., Anesthesiology. 2000; 92(l):75-83; Xantos D et al., J Pain.
- chest pain including, cardiac Pain (see, Vergona, R. A., et al., Life Sci. 1984; 35(18):1877-84); pelvic pain, renal colic pain, acute obstetric pain, including, labor pain (see, Segal, S., et al., Anesth Analg. 1998; 87(4): 864-9); cesarean section pain; acute inflammatory, burn and trauma pain; acute intermittent pain, including, endometriosis (see, Cason, A. M., et al.,Horm Behav. 2003; 44(2): 123-31);
- Bladder and urogenital disease including, urinary incontinence (see, Berggren, T., et al., J Urol. 1993; 150(5 Pt l):1540-3); hyperactivity bladder (see, Chuang, Y. C, et al., Urology. 2003; 61(3):664-70); painful bladder syndrome (see, Yoshimura, N., et al., J Neurosci. 2001; 21(21):8690-6); interstitial cyctitis (IC) (see, Giannakopoulos& Campilomatos, Arch Ital Urol Nefrol Androl.
- urinary incontinence see, Berggren, T., et al., J Urol. 1993; 150(5 Pt l):1540-3
- hyperactivity bladder see, Chuang, Y. C, et al., Urology. 2003; 61(3):664-70
- painful bladder syndrome see, Yoshimura, N., et al.,
- Voltage-gated calcium channels are membrane-spanning, multi- subunit proteins that open in response to membrane depolarization, allowing Ca entry from the extracellular milieu.
- Calcium channels were initially classified based on the time and voltage-dependence of channel opening and on the sensitivity to pharmacological block. The categories were low- voltage activated (primarily T-type) and high- voltage activated (L,N,P,Q or R-type). This classification scheme was replaced by a nomenclature based upon the molecular subunit composition, as summarized in Table B (Hockerman GH, Peterson BZ, Johnson BD, Catterall WA. 1997. Annu Rev Pharmacol Toxicol 37: 361-96; Striessnig J. 1999. Cell Physiol Biochem 9: 242-69).
- the ⁇ ⁇ subunit is the primary determinant of the pharmacological properties and contains the channel pore and voltage sensor (Hockerman et al., 1997; Striessnig, 1999). Ten isoforms of the ⁇ ⁇ subunit are known, as indicated in Table I below.
- the a 2 d subunit consists of two disulfide linked subunits, a 2 , which is primarily extracellular and a transmembrane d subunit.
- a 2 d disulfide linked subunits
- Four isoforms of a 2 d are known, a 2 d-l, a 2 d-2, a 2 d-3 and a 2 d-4.
- the ⁇ subunit is a non-glycosylated cytoplasmic protein that binds to the a ⁇ subunit.
- Four isoforms are known, termed ⁇ i to ⁇ 4 .
- the ⁇ subunit is a transmembrane protein that has been biochemically isolated as a component of Ca v l and Ca v 2 channels.
- At least 8 isoforms are known (Y 1 to ⁇ 8 ) [Kang MG, Campbell KP. 2003. J Biol Chem 278: 21315-8].
- the nomenclature for voltage-gated calcium channels is based upon the content of the a ! subunit, as indicated in Table I.
- Each type of OC 1 subunit can associate with a variety of ⁇ , ⁇ 2 ⁇ or ⁇ subunits, so that each Ca v type corresponds to many different combinations of subunits.
- Ca v 2 currents are found almost exclusively in the central and peripheral nervous system and in neuroendocrine cells and constitute the predominant forms of presynaptic voltage-gated calcium current. Presynaptic action potentials cause channel opening and neurotransmitter release is steeply dependent upon the subsequent calcium entry. Thus, Ca v 2 channels play a central role in mediating neurotransmitter release.
- Ca v 2.1 and Ca v 2.2 contain high affinity binding sites for the peptide toxins ⁇ -conotoxin-MVIIC and ⁇ -conotoxin-GVIA, respectively, and these peptides have been used to determine the distribution and function of each channel type.
- Cay2.2 is highly expressed at the presynaptic nerve terminals of neurons from the dorsal root ganglion and neurons of lamina I and II of the dorsal horn (Westenbroek RE, Hoskins L, Catterall WA. 1998. J Neiirosci 18: 6319-30; Cizkova D, Marsala J, Lukacova N, Marsala M, Jergova S, et al.
- Ca ⁇ 2.2 channels are also found in presynaptic te ⁇ ninals between second and third order interneurons in the spinal cord. Both sites of neurotransmission are veiy important in relaying pain information to the brain.
- Acute pain serves an important protective function in keeping the organism safe from stimuli that may produce tissue damage. Severe thermal, mechanical, or chemical inputs have the potential to cause severe damage to the organism if unheeded.
- Acute pain serves to quickly remove the individual from the damaging environment. Acute pain by its very nature generally is short lasting and intense. Inflammatory pain on the other had may last for much longer periods of time and it's intensity is more graded. Inflammation may occur for many reasons including tissue damage, autoimmune response, and pathogen invasion.
- Inflammatory pain is mediated by an "inflammatory soup” that consists of substance P, histamines, acid, prostaglandin, bradykinin, CGPvP, cytokines, ATP, and neurotransmitter release.
- the third class of pain is neuropathic and involves nerve damage that results in reorganization of neuronal proteins and circuits yielding a pathologic "sensitized” state that can produce chronic pain lasting for years. This type of pain provides no adaptive benefit and is particularly difficult to treat with existing therapies.
- Pain, particularly neuropathic and intractable pain is a large unmet medical need. Millions of individuals suffer from severe pain that is not well controlled by current therapeutics.
- the current drugs used to treat pain include NSAIDS, COX2 inhibitors, opioids, tricyclic antidepressants, and anticonvulsants.
- Neuropathic pain has been particularly difficult to treat as it does not respond well to opiods until high doses are reached.
- Gabapentin is currently the favored therapeutic for the treatment of neuropathic pain although it works in only 60% of patients where it shows modest efficacy. The drug is however very safe and side effects are generally tolerable although sedation is an issue at higher doses.
- the toxin has an 85% success rate for the treatment of pain in humans with a greater potency than morphine.
- An orally available antagonist of Cay2.2 should have similar efficacy without the need for intrathecal infusion.
- Ca ⁇ 2.1 and Ca ⁇ 2.3 are also in neurons of nociceptive pathways and antagonists of these channels could be used to treat pain.
- Antagonists of Ca v 2.1, Ca v 2.2 or Ca v 2.3 should also be useful for treating other pathologies of the cental nervous system that apparently involve excessive calcium entry. Cerebral ischaemia and stroke are associated with excessive calcium entry due to depolarization of neurons.
- the Ca ⁇ 2.2 antagonist ziconotide is effective in reducing infarct size in a focal ischemia model using laboratory animals, suggesting that Ca ⁇ 2.2 antagonists could be used for the treatment of stroke.
- reducing excessive calcium influx into neurons may be useful for the treatment of epilepsy, traumatic brain injury, Alzheimer's disease, multi-infarct dementia and other classes of dementia, amyotrophic lateral sclerosis, amnesia, or neuronal damage caused by poison or other toxic substances.
- Ca ⁇ 2.2 also mediates release of neurotransmitters from neurons of the sympathetic nervous system and antagonists could be used to treat cardiovascular diseases such as hypertension, cardiac arrhythmia, angina pectoris, myocardial infarction, and congestive heart failure.
- the present invention provides compounds of formula I that are useful as inhibitors of voltage-gated sodium channels and calcium channels.
- ring Z is a 5-7 membered unsaturated or aromatic ring having at least one ring heteroatom selected from O, S, N, or NH, and said ring Z is optionally substituted with z occurrence of R z ; z is 0-4;
- R z is selected from R 1 , R 2 , R 3 , R 4 , or R 5 ;
- ring B is a 5-7 membered, monocyclic, unsaturated or aromatic ring with at least one heteroatom independently selected from N, O, S, or NH; wherein ring B, together with the phenyl ring fused thereto is optionally substituted with w occurrence of W-R w ; w is 0-4; wherein W is a bond or a C1-C6 straight or branched alkylidene chain, wherein up to two non-adjacent methylene units other than the carbon atom attached to ring B are optionally and independently replaced by -CO-, -CS-, -COCO-, -CONR 2 -, -CONR 2 NR 2 -, -CO 2 -, -OCO-, -NR 2 CO 2 -, -O-, -NR 2 CONR 2 -, -OCONR 2
- R w is independently selected from halo, CN, NO 2 , CF 3 , OCF 3 , OR 6 , SR 6 , S(O)R 2 , SO 2 R 2 , NH 2 , N(R 2 ) 2 , or COOR 2 ;
- Q is a bond or is a C1-C6 straight or branched alkylidene chain, wherein up to two non-adjacent methylene units of Q are optionally and independently replaced by -CO-, -CS-, -COCO-, -CONR 2 -, -CONR 2 NR 2 -, -CO 2 -, -OCO-, -NR 2 CO 2 -, -0-, -NR 2 CONR 2 -, -OCONR 2 - , -NR 2 NR 2 , -NR 2 NR 2 CO-, -NR 2 CO-, -S-, -SO, -SO 2 -, -NR 2 -,
- R ⁇ is a C 1-6 aliphatic group, a 3-8-membered saturated, partially unsaturated, or fully unsaturated monocyclic ring having 0-3 heteroatoms independently selected from O, S, N, or NH, or an 8-12 membered saturated, partially unsaturated, or fully unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from O, S, N, or NH; wherein R ⁇ is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 ;
- R N is R 2 ; q is O or 1;
- Y is halo, CN, NO 2 , CF 3 , OCF 3 , OH, SR 6 , S(O)R 6 , SO 2 R 6 , NH 2 , NHR 6 , N(R 6 ) 2 , NR 6 R 8 , COOH, COOR 6 , or OR 6 ; or two R 1 on adjacent ring atoms, taken together, form 1,2-methylenedioxy or 1,2- ethylenedioxy;
- R 2 is hydrogen or C1-C6 aliphatic, wherein each R 2 is optionally substituted with up to 2 substituents independently selected from R 1 , R 4 , or R 5 ;
- R 3 is a C3-C8 cycloaliphatic, C6-C10 aryl, C3-C8 heterocyclic, or C5-C10 heteroaryl ring, optionally substituted with up to 3 substituents, independently selected from R 1 , R 2 , R 4 , or R 5 ;
- R 4 is OR 5 , OR 6 , OC(O)R 6 , OC(O)R 5 , OC(O)OR 6 , OC(O)OR 5 , OC(O)N(R 6 ) 2 , OC(O)N(R 5 ) 2 , OC(O)N(R 6 R 5 ), OP(O)(OR 6 ) 2 , OP(O)(OR 5 ) 2 , OP(O)(OR 6 )(OR 5 ), SR 6 , SR 5 , S(O)R 6 , S(O)R 5 , SO 2 R 6 , SO 2 R 5 , SO 2 N(R 6 ) 2 , SO 2 N(R 5 ) 2 , SO 2 NR 5 R 6 , SO 3 R 6 , SO 3 R 5 , C(O)R 5 , C(O)OR 5 , C(O)R 6 , C(O)OR 6 , C(O)N(R 6 ) 2
- R 5 is a C3-C8 cycloaliphatic, C6-C10 aryl, C3-C8 heterocyclic, or C5-C10 heteroaryl ring, optionally substituted with up to 3 R 1 substituents;
- R 6 is H or C1-C6 aliphatic, wherein R 6 is optionally substituted with a R 7 substituent;
- R 7 is a C3-C8 cycloaliphatic, C6-C10 aryl, C3-C8 heterocyclic, or C5-C10 heteroaryl ring, and each R 7 is optionally substituted with up to 2 substituents independently chosen from H, C1-C6 aliphatic, or (CH 2 ) m -Z' wherein m is 0-2;
- Z' is selected from halo, CN, NO 2 , C(halo) 3 , CH(halo) 2 , CH 2 (halo), -OC(halo) 3 , - OCH(halo) 2 , -OCH 2 (halo), OH, S-(C1-C6) aliphatic, S(O)-(Cl-Co) aliphatic, SO 2 -(Cl- C6)aliphatic, NH 2 , NH-(C 1-C6)aliphatic, N((Cl-C6)aliphatic) 2 , N((Cl-C6)aliphatic)R 8 , COOH, C(0)0(-(Cl-C6)aliphatic), or O-(C1-C6)aliphatic;
- R 8 is acetyl, C6-C10 aryl sulfonyl, or C1-C6 alkyl sulfonyl; and provided that:
- compounds of the invention may optionally be substituted with one or more substituents, such as are illustrated generally above, or as exemplified by particular classes, subclasses, and species of the invention. It will be appreciated that the phrase “optionally substituted” is used interchangeably with the phrase “substituted or unsubstituted.” In general, the term “substituted”, whether preceded by the term “optionally” or not, refers to the replacement of hydrogen radicals in a given structure with the radical of a specified substituent.
- an optionally substituted group may have a substituent at each substitutable (i.e., having the requisite valency available for a given substituent) position of the group, and when more than one position in any given structure may be substituted with more than one substituent selected from a specified group, the substituent may be either the same or different at every position.
- Combinations of substituents envisioned by this invention are preferably those that result in the formation of stable or chemically feasible compounds.
- the term "stable”, as used herein, refers to compounds that are not substantially altered when subjected to conditions to allow for their production, detection, and preferably their recovery, purification, and use for one or more of the purposes disclosed herein.
- a stable compound or chemically feasible compound is one that is not substantially altered when kept at a temperature of 40°C or less, in the absence of moisture or other chemically reactive conditions, for at least a week.
- aliphatic or "aliphatic group”, as used herein, means a straight-chain (i.e., unbranched) or branched, substituted or unsubstituted hydrocarbon chain that is completely saturated or that contains one or more units of unsaturation. Unless otherwise specified, aliphatic groups contain 1-20 aliphatic carbon atoms. In some embodiments, aliphatic groups contain 1-10 aliphatic carbon atoms. In other embodiments, aliphatic groups contain 1-8 aliphatic carbon atoms. In still other embodiments, aliphatic groups contain 1-6 aliphatic carbon atoms, and in yet other embodiments aliphatic groups contain 1-4 aliphatic carbon atoms.
- Suitable aliphatic groups include, but are not limited to, linear or branched, substituted or unsubstituted alkyl, alkenyl, alkynyl groups.
- cycloaliphatic means a monocyclic hydrocarbon, bicyclic, or tricyclic hydrocarbon that is completely saturated or that contains one or more units of unsaturation, but which is not aromatic and has a single point of attachment to the rest of the molecule.
- cycloaliphatic refers to a monocyclic C 3 -C 8 hydrocarbon or bicyclic C 8 -C 12 hydrocarbon that is completely saturated or that contains one or more units of unsaturation, but which is not aromatic, that has a single point of attachment to the rest of the molecule wherein any individual ring in said bicyclic ring system has 3-7 members.
- heterocycle Unless otherwise specified, the term "heterocycle”, “heterocyclyl”,
- heterocycloaliphatic or “heterocyclic” as used herein means non-aromatic, monocyclic, bicyclic, or tricyclic ring systems in which one or more ring atoms in one or more ring members is an independently selected heteroatom. Heterocyclic ring can be saturated or can contain one or more unsaturated bonds.
- the "heterocycle”, “heterocyclyl”, or “heterocyclic” group has three to fourteen ring members in which one or more ring members is a heteroatom independently selected from oxygen, sulfur, nitrogen, or phosphorus, and each ring in the ring system contains 3 to 7 ring members.
- heteroatom means oxygen, sulfur, nitrogen, phosphorus, or silicon (including, any oxidized form of nitrogen, sulfur, phosphorus, or silicon; the quaternized form of any basic nitrogen or; a substitutable nitrogen of a heterocyclic ring, for example N (as in 3,4-dihydro-2H-pyrrolyl), NH (as in pyrrolidinyl) or NR + (as in N- substituted pyrrolidinyl)).
- alkoxy refers to an alkyl group, as previously defined, attached to the principal carbon chain through an oxygen (“alkoxy”) or sulfur (“thioalkyl”) atom.
- aralkoxy refers to monocyclic, bicyclic, and tricyclic ring systems having a total of five to fourteen ring carbon atoms, wherein at least one ring in the system is aromatic and wherein each ring in the system contains 3 to 7 ring carbon atoms.
- aryl may be used interchangeably with the term “aryl ring”.
- heteroaryl used alone or as part of a larger moiety as in
- heteroarylkyl refers to monocyclic, bicyclic, and tricyclic ring systems having a total of five to fourteen ring members, wherein at least one ring in the system is aromatic, at least one ring in the system contains one or more heteroatoms, and wherein each ring in the system contains 3 to 7 ring members.
- heteroaryl may be used interchangeably with the term “heteroaryl ring” or the term “heteroaromatic".
- alkylidene chain refers to a straight or branched carbon chain that may be fully saturated or have one or more units of unsaturation and has two points of attachment to the rest of the molecule.
- spirocycloalkylene refers to a cycloaliphatic ring that has two points of attachment from the same carbon atom to the rest of the molecule.
- structures depicted herein are also meant to include all isomeric (e.g., enantiomeric, diastereomeric, and geometric (or conformational)) forms of the structure; for example, the R and S configurations for each asymmetric center, (Z) and (E) double bond isomers, and (Z) and (E) conformational isomers. Therefore, single stereochemical isomers as well as enantiomeric, diastereomeric, and geometric (or conformational) mixtures of the present compounds are within the scope of the invention. Unless otherwise stated, all tautomeric forms of the compounds of the invention are within the scope of the invention.
- structures depicted herein are also meant to include compounds that differ only in the presence of one or more isotopically enriched atoms.
- compounds having the present structures except for the replacement of hydrogen by deuterium or tritium, or the replacement of a carbon by a 13 C- or 14 C-enriched carbon are within the scope of this invention.
- Such compounds are useful, for example, as analytical tools or probes in biological assays.
- q is 0. In another embodiment, q is 1.
- Z is an optionally substituted ring selected from:
- Z has up to two substituents selected from R 1 , R 2 , or R 5 .
- Z is selected from:
- Z is formula a-i-a.
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- Z is selected from:
- R 1 is oxo. Or R 1 is
- R 1 is R 6 .
- R 1 is (CH 2 )n-Y. Or, R 1 is Y.
- Exemplary Y includes halo, CN, NO 2 , CF 3 , OCF 3 , OH, SH, S(C 1-4 aliphatic), S(O)(C 1-4 aliphatic), SO 2 (C 1-4 aliphatic), NH 2 , NH(C 1-4 aliphatic), N(C 1-4 aliphatic) 2 , NR(C 1-4 aliphatic)R 8 , COOH, COO(C 1-4 aliphatic) or 0(C 1-4 aliphatic). Or, two R 1 on adjacent ring atoms, taken together, form 1,2-methylenedioxy or 1,2-ethylenedioxy.
- Y is halo, OH, SH, CN, NO 2 , CF 3 , OCF 3 , COOH, or C(O)O(C 1-C4 alkyl).
- R 1 is selected from halo, cyano, trifluoromethyl, OH, C 1-4 alkyl, C 2-4 alkenyl, C 1-4 alkoxy, trifluoromethoxy, C(O)NH 2 , NH 2 , NH(C 1-4 alkyl), N(C 1-4 alkyl) 2 , NHC(O)C 1-4 alkyl, 1-pyrrolidinyl, 1-piperidinyl, 1-morpholinyl, or C(O)Ci -4 alkyl.
- R 1 is (CH 2 ) n -Y.
- n is O or
- n is 2.
- Y is halo, CN, NO 2 , CF 3 , OCF 3 , OR 6 , SR 6 , S(O)R 6 , SO 2 R 6 , N(R 6 ) 2 , NR 6 R 8 , or COOR 6 .
- Y is halo, OH, SH, CN, NO 2 , CF 3 , OCF 3 , or C(O)O(C 1-C4 alkyl).
- R 2 is a straight or branched (C1-C6) alkyl or (C2-C6)alkenyl or alkynyl, optionally substituted with up to two R 1 substitutions.
- R is C1-C6 aliphatic
- R is a C1-C6 straight or branched alkyl.
- R 2 is C1-C4 alkyl.
- R is optionally substituted with up to 2 substituents independently selected from R 1 or R 4 .
- R 2 is optionally substituted with up to 2 substituents independently selected from R 1 or R 5 .
- R 3 is a C3-C8 cycloaliphatic optionally substituted with up to 3 substituents independently selected from R 1 , R 2 , R 4 , or R 5 .
- Exemplary cycloaliphatics include cyclopropyl, cyclopentyl, cyclohexyl, or cycloheptyl.
- R 3 is a C6-C10 aryl, optionally substituted with up to 3 substituents, independently selected from R 1 , R 2 , R 4 , or R 5 .
- Exemplary aryl rings include phenyl or naphthyl.
- R 3 is a C3-C8 heterocyclic, optionally substituted with up to 3 substituents, independently selected from R 1 , R 2 , R 4 , or R 5 .
- heterocyclic rings include azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, or thiomorpholinyl.
- R 3 is a C5-C10 heteroaryl ring, optionally substituted with up to 3 substituents, independently selected from R 1 , R 2 , R 4 , or R 5 .
- heteroaryl rings include pyridyl, pyrazyl, triazinyl, furanyl, pyrrolyl, thiophenyl, oxazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, imidazolyl, triazolyl, thiadiazolyl, pyrimidinyl.
- quinolinyl isoquinolinyl, benzofuranyl, benzothiophenyl, quinolinyl, isoquinolinyl, benzofuranyl, benzothiophenyl, indolizinyl, indolyl, isoindolyl, indolinyl, indazolyl, benzimidazolyl, benzothiazolyl, purinyl, cinnolinyl, phthalazine, quinazolinyl, quinaoxalinyl, naphthylirinyl, or pteridinyl.
- R 4 is selected from OR 5 or OR 6 .
- R 4 is selected from OC(O)R 6 or OC(O)R 5 .
- R 4 is selected from C(O)R 5 , C(O)OR 5 , C(O)R 6 , C(O)OR 6 , C(O)N(R 6 ) 2 , C(O)N(R 5 ) 2 , or C(O)N(R 5 R 6 ).
- R 4 is selected from N(R 6 ) 2 , N(R 5 ) 2 , or N(R 5 R 6 ).
- R 4 is selected from NR 5 C(O)R 5 , NR 6 C(O)R 6 , NR 6 C(O)R 5 , NR 6 C(O)N(R 6 ) 2 , NR 6 C(O)NR 5 R 6 , NR 6 C(O)N(R 5 ) 2 , NR 5 C(O)N(R 6 ) 2 , NR 5 C(O)NR 5 R 6 , or NR 5 C(O)N(R 5 ) 2 .
- R 5 is a C3-C8 cycloaliphatic, optionally substituted with up to 3 R 1 substituents.
- Exemplary cycloaliphatics include cyclopropyl, cyclopentyl, cyclohexyl, or cycloheptyl.
- R 5 is a C6-C10 aryl, optionally substituted with up to 3 R 1 substituents.
- Exemplary aryl rings include phenyl or naphthyl.
- R 5 is a C3-C8 heterocyclic, optionally substituted with up to 3 R 1 substituents.
- heterocyclic rings include azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, or thiomorpholinyl.
- R 5 is a C5-C10 heteroaryl ring, optionally substituted with up to 3 R 1 substituents.
- Exemplary heteroaryl rings include pyridyl, pyrazyl, triazinyl, furanyl, pyrrolyl, thiophenyl, oxazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, imidazolyl, triazolyl, thiadiazolyl, pyrimidinyl.
- quinolinyl isoquinolinyl, benzofuranyl, benzothiophenyl, quinolinyl, isoquinolinyl, benzofuranyl, benzothiophenyl, indolizinyl, indolyl, isoindolyl, indolinyl, indazolyl, benzimidazolyl, benzothiazolyl, purinyl, cinnolinyl, phthalazine, quinazolinyl, quinaoxalinyl, naphthyridinyl, or pteridinyl.
- R 6 is H. In another embodiment, R 6 is C1-C6 aliphatic, preferably, C1-C6 alkyl. Or, R 6 is C1-C6 aliphatic optionally substituted with a R 7 substituent.
- R 7 is a C3-C8 cycloaliphatic, optionally substituted with up to 2 substituents independently chosen from H, C1-C6 aliphatic, or (CH 2 ) m -Z' wherein m is 0-2.
- exemplary cycloaliphatics include cyclopropyl, cyclopentyl, cyclohexyl, or cycloheptyl.
- R 7 is a C6-C10 aryl, optionally substituted with up to 2 substituents independently chosen from H, C1-C6 aliphatic, or (CH 2 ) m -Z' wherein m is 0-2.
- Exemplary aryl rings include phenyl or naphthyl.
- R 7 is a C3-C8 heterocyclic, optionally substituted with up to 2 substituents independently chosen from H, C1-C6 aliphatic, or (CH 2 ) m -Z' wherein m is 0-2.
- Exemplary heterocyclic rings include azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, or thiomorpholinyl.
- R 7 is a C5-C10 heteroaryl ring, optionally substituted with up to 2 substituents independently chosen from H, C1-C6 aliphatic, or (CH 2 ) m -Z' wherein m is 0-2.
- Exemplary heteroaiyl rings include pyridyl, pyrazyl, triazinyl, furanyl, pyrrolyl, thiophenyl, oxazolyl, isoxazolyl, isothiazolyl, oxadiazolyl, imidazolyl, triazolyl, thiadiazolyl, pyrimidinyl.
- quinolinyl isoquinolinyl, benzofuranyl, benzothiophenyl, quinolinyl, isoquinolinyl, benzofuranyl, benzothiophenyl, indolizinyl, indolyl, isoindolyl, indolinyl, indazolyl, benzimidazolyl, benzothiazolyl, purinyl, cinnolinyl, phthalazine, quinazolinyl, quinaoxalinyl, naphthyridinyl, or pteridinyl.
- Z' is selected from halo, CN, NO 2 , C(halo) 3 ,
- Q is a bond.
- Q is O, S, or NR 2 .
- Q is O.
- Q is S.
- Q is NR 2 .
- Q is NH or N(C1-C6) alkyl.
- Q is a C1-C6 straight or branched alkylidene chain, wherein up to one methylene unit of Q is replaced by O, S, OCO, NH, or N(C1-C4 alkyl).
- Q is a C1-C6 alkyl, wherein one methylene group is replaced by a spirocycloalkylene group such as spirocyclopropylene.
- Q is -X 2 -PCO P -, wherein:
- X 2 is a bond, or C1-C6 aliphatic, optionally substituted with up to two substituents independently selected from R 1 , R 4 , or R 5 ; and p is 0 or 1; and
- X 2 is C1-C6 alkyl or C2-C6 alkylidene. Or, X 2 is
- X 2 is a bond.
- X 1 is NH. Or, X 1 is -N(C1-C4 alkyl)-.
- p is 0.
- p is 1 and X 1 is O.
- p is 1, and X 1 is NR 2 .
- R N is hydrogen.
- R Q is a C 1-6 aliphatic group, wherein R Q is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 .
- R ⁇ is a 3-8-membered saturated, partially unsaturated, or aromatic monocyclic ring having 0-3 heteroatoms independently selected from O, S, N, or NH, wherein R ⁇ is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 .
- R ⁇ is optionally substituted with up to 3 substituents selected from halo, cyano, trifluoromethyl, OH, C 1-4 alkyl, C 2-4 alkenyl, C 1-4 alkoxy, trifluoromethoxy, C(O)NH 2 , NH 2 , NH(C 1-4 alkyl), N(C 1-4 alkyl) 2 , NHC(O)Ci -4 alkyl, or C(O)Ci -4 alkyl.
- substituents selected from halo, cyano, trifluoromethyl, OH, C 1-4 alkyl, C 2-4 alkenyl, C 1-4 alkoxy, trifluoromethoxy, C(O)NH 2 , NH 2 , NH(C 1-4 alkyl), N(C 1-4 alkyl) 2 , NHC(O)Ci -4 alkyl, or C(O)Ci -4 alkyl.
- R Q is optionally substituted phenyl, wherein R Q is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 .
- R ⁇ is phenyl optionally substituted with up to 3 substituents selected from halo, cyano, trifluoromethyl, OH, C 1-4 alkyl, C 2-4 alkenyl, Ci -4 alkoxy, trifluoromethoxy, C(O)NH 2 , NH 2 , NH(Ci -4 alkyl), N(C 1-4 alkyl) 2 , NHC(O)C 1-4 alkyl, or C(O)Ci -4 alkyl.
- R Q is optionally substituted naphthyl, wherein R Q is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 .
- R ⁇ is naphthyl optionally substituted with up to 5 substituents selected from halo, cyano, trifluoromethyl, OH, Ci -4 alkyl, C 2-4 alkenyl, C 1-4 alkoxy, trifluoromethoxy, C(O)NH 2 , NH 2 , NH(Ci -4 alkyl), N(Ci -4 alkyl) 2 , NHC(O)C 1-4 alkyl, or C(O)C 1-4 alkyl.
- R ⁇ is an optionally substituted 3-8 membered cycloaliphatic ring, wherein R Q is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 .
- R ⁇ is selected from optionally substituted cyclopropyl, cyclobutyl, cyclopentyl, or cyclohexyl.
- R Q is an optionally substituted 5-6 membered monocyclic, unsaturated, partically saturated, or aromatic ring containing up to 3 heteroatoms independently selected from O, S, N, or NH.
- R ⁇ is a 3-7 membered monocyclic, heterocyclic ring.
- R Q is selected from an optionally substituted ring selected from:
- R Q is selected from any of rings i - xiv or xvi, wherein said ring is fused to an optionally substituted phenyl ring.
- R Q is selected from an optionally substituted ring selected from pyridyl, pyrimidinyl, pyrazinyl, or pyridazinyl.
- R ⁇ is an optionally substituted ring selected from:
- R Q is any one of the above rings xvii - xxiv, wherein said ring is fused to an optionally substituted phenyl ring.
- R ⁇ is an 8-12 membered saturated, partially unsaturated, or fully unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from O, S, N, or NH, wherein R ⁇ is optionally substituted with up to 4 substituents selected from R 1 , R 2 , R 3 , R 4 , or R 5 .
- R ⁇ is optionally substituted naphthyl.
- R ⁇ is an optionally substituted 8-10 membered, bicyclic, heteroaromatic ring.
- R Q is an optionally substituted, 8-10 membered, bicyclic, heterocyclic ring.
- R ⁇ is an optionally substituted ring selected from:
- R Q is an optionally substituted ring selected from:
- R ⁇ is an optionally substituted ring selected from:
- R ⁇ is selected from the following:
- R ⁇ is selected from pyrrolidin-1-yl, 3,3- difluoropyrrolidin-1-yl, piperidin-1-yl, 3-methyl-piperidin-l-yl, 4-methyl-piperidin-l-yl, 4,4- difluoropiperidin-1-yl, 4,5-dimethyl-4-morpholin-l-yl, 2,6-dimetliyl-morpholin-4-yl, indol-1- yl, 4-fluoro-indol-l-yl, 5-chloro-indol-l-yl, 7-chloro-indol-l-yl, tetrahydroquinolin-1-yl, 7- trifluoromethyl-tetrahydroquinolin- 1 -yl, 6-methyl-tetrahydroquinolin- 1 -yl, 6-chloro- tetrahydroquinolin-1-yl, tetrahydro
- the present invention provides compounds of formula I-A-i: wherein ring Z, R N , Q, and R ⁇ are as defined above.
- the present invention provides compounds of formula I-A-ii:
- the present invention provides compounds of formula I-B-i:
- the present invention provides compounds of formula I-B-ii:
- the present invention provides compounds of formula I-C-i:
- the present invention provides compounds of formula I-C-ii:
- the present invention provides compounds of formula I-D-ii:
- the present invention provides compounds of fo ⁇ nula I-E-i:
- the present invention provides compounds of fo ⁇ nula I-E-ii:
- the present invention provides compounds of
- the compounds of the present invention may be prepared readily using methods known in the art. Illustrated below in Scheme 1 is one such method for preparing the compounds of the present invention.
- compositions are provided.
- the present invention provides compounds that are inhibitors of voltage-gated sodium ion channels and/or calcium channels, and thus the present compounds are useful for the treatment of diseases, disorders, and conditions including, but not limited to acute, chronic, neuropathic, or inflammatory pain, arthritis, migrane, cluster headaches, trigeminal neuralgia, herpetic neuralgia, general neuralgias, epilepsy or epilepsy conditions, neurodegenerative disorders, psychiatric disorders such as anxiety and depression, myotonia, arrythmia, movement disorders, neuroendocrine disorders, ataxia, multiple sclerosis, irritable bowel syndrome, and incontinence.
- diseases, disorders, and conditions including, but not limited to acute, chronic, neuropathic, or inflammatory pain, arthritis, migrane, cluster headaches, trigeminal neuralgia, herpetic neuralgia, general neuralgias, epilepsy or epilepsy conditions, neurodegenerative disorders, psychiatric disorders such as anxiety and depression, my
- compositions comprising any of the compounds as described herein, and optionally comprise a pharmaceutically acceptable carrier, adjuvant or vehicle.
- these compositions optionally further comprise one or more additional therapeutic agents.
- a pharmaceutically acceptable derivative includes, but is not limited to, pharmaceutically acceptable salts, esters, salts of such esters, or any other adduct or derivative which upon administration to a patient in need is capable of providing, directly or indirectly, a compound as otherwise described herein, or a metabolite or residue thereof.
- the term “pharmaceutically acceptable salt” refers to those salts which are, within the scope of sound medical judgement, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response and the like, and are commensurate with a reasonable benefit/risk ratio.
- a “pharmaceutically acceptable salt” means any non-toxic salt or salt of an ester of a compound of this invention that, upon administration to a recipient, is capable of providing, either directly or indirectly, a compound of this invention or an inhibitorily active metabolite or residue thereof.
- the term “inhibitorily active metabolite or residue thereof means that a metabolite or residue thereof is also an inhibitor of a voltage-gated sodium ion channel or calcium channel.
- compositions of this invention include those derived from suitable inorganic and organic acids and bases.
- Examples of pharmaceutically acceptable, nontoxic acid addition salts are salts of an amino group formed with inorganic acids such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid and perchloric acid or with organic acids such as acetic acid, oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid or malonic acid or by using other methods used in the art such as ion exchange.
- inorganic acids such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid and perchloric acid
- organic acids such as acetic acid, oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid or malonic acid or by using other methods used in the art such as ion exchange.
- salts include adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fomiate, fumarate, glucoheptonate, glycerophosphate, gluconate, hemisulfate, heptanoate, hexanoate, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauiyl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate, pamoate, peroxine sodium
- Salts derived from appropriate bases include alkali metal, alkaline earth metal, ammonium and salts. This invention also envisions the quaternization of any basic nitrogen-containing groups of the compounds disclosed herein. Water or oil-soluble or dispersable products may be obtained by such quaternization.
- Representative alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like.
- Further pharmaceutically acceptable salts include, when appropriate, nontoxic ammonium, quaternary ammonium, and amine cations formed using counterions such as halide, hydroxide, carboxylate, sulfate, phosphate, nitrate, loweralkyl sulfonate and aryl sulfonate.
- the pharmaceutically acceptable compositions of the present invention additionally comprise a pharmaceutically acceptable carrier, adjuvant, or vehicle, which, as used herein, includes any and all solvents, diluents, or other liquid vehicle, dispersion or suspension aids, surface active agents, isotonic agents, thickening or emulsifying agents, preservatives, solid binders, lubricants and the like, as suited to the particular dosage form desired.
- a pharmaceutically acceptable carrier, adjuvant, or vehicle which, as used herein, includes any and all solvents, diluents, or other liquid vehicle, dispersion or suspension aids, surface active agents, isotonic agents, thickening or emulsifying agents, preservatives, solid binders, lubricants and the like, as suited to the particular dosage form desired.
- Remington's Pharmaceutical Sciences, Sixteenth Edition, E. W. Martin (Mack Publishing Co., Easton, Pa., 1980) discloses various carriers used in formulating pharmaceutically acceptable compositions
- any conventional carrier medium is incompatible with the compounds of the invention, such as by producing any undesirable biological effect or otherwise interacting in a deleterious manner with any other component(s) of the pharmaceutically acceptable composition, its use is contemplated to be within the scope of this invention.
- materials which can serve as pharmaceutically acceptable carriers include, but are not limited to, ion exchangers, alumina, aluminum stearate, lecithin, serum proteins, such as human serum albumin, buffer substances such as phosphates, glycine, sorbic acid, or potassium sorbate, partial glyceride mixtures of saturated vegetable fatty acids, water, salts or electrolytes, such as protamine sulfate, disodium hydrogen phosphate, potassium hydrogen phosphate, sodium chloride, zinc salts, colloidal silica, magnesium trisilicate, polyvinyl pyrrolidone, polyacrylates, waxes, polyethylene-polyoxypropylene-block polymers, wool fat, sugars such as lactose, glucose and sucrose; starches such as com starch and potato starch; cellulose and its derivatives such as sodium carboxymethyl cellulose, ethyl cellulose and cellulose acetate; powdered tragacanth; malt; gelatin; tal
- a method for the treatment or lessening the severity of acute, chronic, neuropathic, or inflammatory pain, arthritis, migrane, cluster headaches, trigeminal neuralgia, herpetic neuralgia, general neuralgias, epilepsy or epilepsy conditions, neurodegenerative disorders, psychiatric disorders such as anxiety and depression, myotonia, arrythmia, movement disorders, neuroendocrine disorders, ataxia, multiple sclerosis, irritable bowel syndrome, incontinence, visceral pain, osteoarthritis pain, postherpetic neuralgia, diabetic neuropathy, radicular pain, sciatica, back pain, head or neck pain, severe or intractable pain, nociceptive pain, breakthrough pain, postsurgical pain, or cancer pain comprising administering an effective amount of a compound, or a pharmaceutically acceptable composition comprising a compound to a subject in need thereof.
- a method for the treatment or lessening the severity of acute, chronic, neuropathic, or inflammatory pain comprising administering an effective amount of a compound or a pharmaceutically acceptable composition to a subject in need thereof.
- a method for the treatment or lessening the severity of radicular pain, sciatica, back pain, head pain, or neck pain is provided comprising administering an effective amount of a compound or a pharmaceutically acceptable composition to a subject in need thereof.
- a method for the treatment or lessening the severity of severe or intractable pain, acute pain, postsurgical pain, back pain, tinnitis or cancer pain comprising administering an effective amount of a compound or a pharmaceutically acceptable composition to a subject in need thereof.
- an "effective amount" of the compound or pharmaceutically acceptable composition is that amount effective for treating or lessening the severity of one or more of acute, chronic, neuropathic, or inflammatory pain, arthritis, migrane, cluster headaches, trigeminal neuralgia, herpetic neuralgia, general neuralgias, epilepsy or epilepsy conditions, neurodegenerative disorders, psychiatric disorders such as anxiety and depression, myotonia, arrythmia, movement disorders, neuroendocrine disorders, ataxia, multiple sclerosis, irritable bowel syndrome, incontinence, visceral pain, osteoarthritis pain, postherpetic neuralgia, diabetic neuropathy, radicular pain, sciatica, back pain, head or neck pain, severe or intractable pain, nociceptive pain, breakthrough pain, postsurgical pain, tinnitis or cancer pain.
- the compounds and compositions, according to the method of the present invention may be administered using any amount and any route of administration effective for treating or lessening the severity of one or more of acute, chronic, neuropathic, or inflammatory pain, arthritis, migrane, cluster headaches, trigeminal neuralgia, herpetic neuralgia, general neuralgias, epilepsy or epilepsy conditions, neurodegenerative disorders, psychiatric disorders such as anxiety and depression, myotonia, arrythmia, movement disorders, neuroendocrine disorders, ataxia, multiple sclerosis, irritable bowel syndrome, incontinence, visceral pain, osteoarthritis pain, postherpetic neuralgia, diabetic neuropathy, radicular pain, sciatica, back pain, head or neck pain, severe or intractable pain, nociceptive pain, breakthrough pain, postsurgical pain, tinnitis or cancer pain.
- trigeminal neuralgia such as anxiety and depression, myotonia, arrythmia
- the exact amount required will vary from subject to subject, depending on the species, age, and general condition of the subject, the severity of the infection, the particular agent, its mode of administration, and the like.
- the compounds of the invention are preferably formulated in dosage unit form for ease of administration and uniformity of dosage.
- dosage unit form refers to a physically discrete unit of agent appropriate for the patient to be treated. It will be understood, however, that the total daily usage of the compounds and compositions of the present invention will be decided by the attending physician within the scope of sound medical judgment.
- the specific effective dose level for any particular patient or organism will depend upon a variety of factors including the disorder being treated and the severity of the disorder; the activity of the specific compound employed; the specific composition employed; the age, body weight, general health, sex and diet of the patient; the time of administration, route of administration, and rate of excretion of the specific compound employed; the duration of the treatment; drugs used in combination or coincidental with the specific compound employed, and like factors well known in the medical arts.
- patient means an animal, preferably a mammal, and most preferably a human.
- compositions of this invention can be administered to humans and other animals orally, rectally, parenterally, intracisternally, intravaginally, intraperitoneally, topically (as by powders, ointments, or drops), bucally, as an oral or nasal spray, or the like, depending on the severity of the infection being treated.
- the compounds of the invention may be administered orally or parenterally at dosage levels of about 0.01 mg/kg to about 50 mg/kg and preferably from about 1 mg/kg to about 25 mg/kg, of subject body weight per day, one or more times a day, to obtain the desired therapeutic effect.
- Liquid dosage forms for oral administration include, but are not limited to, pharmaceutically acceptable emulsions, microemulsions, solutions, suspensions, syrups and elixirs.
- the liquid dosage forms may contain inert diluents commonly used in the art such as, for example, water or other solvents, solubilizing agents and emulsifiers such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylene glycol, dimethylformamide, oils (in particular, cottonseed, groundnut, corn, germ, olive, castor, and sesame oils), glycerol, tetrahydrofurfuryl alcohol, polyethylene glycols and fatty acid esters of sorbitan, and mixtures thereof.
- the oral compositions can also include adj
- Injectable preparations for example, sterile injectable aqueous or oleaginous suspensions may be formulated according to the known art using suitable dispersing or wetting agents and suspending agents.
- the sterile injectable preparation may also be a sterile injectable solution, suspension or emulsion in a nontoxic parenterally acceptable diluent or solvent, for example, as a solution in 1,3-butanediol.
- the acceptable vehicles and solvents that may be employed are water, Ringer's solution, U.S.P. and isotonic sodium chloride solution.
- sterile, fixed oils are conventionally employed as a solvent or suspending medium.
- any bland fixed oil can be employed including synthetic mono- or diglycerides.
- fatty acids such as oleic acid are used in the preparation of injectables.
- the injectable formulations can be sterilized, for example, by filtration through a bacterial-retaining filter, or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable medium prior to use.
- a compound of the present invention In order to prolong the effect of a compound of the present invention, it is often desirable to slow the absorption of the compound from subcutaneous or intramuscular injection. This may be accomplished by the use of a liquid suspension of crystalline or amorphous material with poor water solubility. The rate of absorption of the compound then depends upon its rate of dissolution that, in turn, may depend upon crystal size and crystalline form. Alternatively, delayed absorption of a parenterally administered compound form is accomplished by dissolving or suspending the compound in an oil vehicle. Injectable depot forms are made by fonning microencapsule matrices of the compound in biodegradable polymers such as polylactide-polyglycolide.
- the rate of compound release can be controlled.
- biodegradable polymers include poly(orthoesters) and poly(anhydrides).
- Depot injectable formulations are also prepared by entrapping the compound in liposomes or microemulsions that are compatible with body tissues.
- compositions for rectal or vaginal administration are preferably suppositories which can be prepared by mixing the compounds of this invention with suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax which are solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active compound.
- suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax which are solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active compound.
- Solid dosage forms for oral administration include capsules, tablets, pills, powders, and granules.
- the active compound is mixed with at least one inert, pharmaceutically acceptable excipient or carrier such as sodium citrate or dicalcium phosphate and/or a) fillers or extenders such as starches, lactose, sucrose, glucose, mannitol, and silicic acid, b) binders such as, for example, carboxymethylcellulose, alginates, gelatin, polyvinylpyrrolidinone, sucrose, and acacia, c) humectants such as glycerol, d) disintegrating agents such as agar—agar, calcium carbonate, potato or tapioca starch, alginic acid, certain silicates, and sodium carbonate, e) solution retarding agents such as paraffin, f) absorption accelerators such as quaternary ammonium compounds, g) wetting agents such as, for example, cetyl
- Solid compositions of a similar type may also be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polyethylene glycols and the like.
- the solid dosage forms of tablets, dragees, capsules, pills, and granules can be prepared with coatings and shells such as enteric coatings and other coatings well known in the pharmaceutical formulating art. They may optionally contain opacifying agents and can also be of a composition that they release the active ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner. Examples of embedding compositions that can be used include polymeric substances and waxes. Solid compositions of a similar type may also be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polethylene glycols and the like.
- the active compounds can also be in microencapsulated form with one or more excipients as noted above.
- the solid dosage forms of tablets, dragees, capsules, pills, and granules can be prepared with coatings and shells such as enteric coatings, release controlling coatings and other coatings well known in the pharmaceutical formulating art.
- the active compound may be admixed with at least one inert diluent such as sucrose, lactose or starch.
- Such dosage forms may also comprise, as is normal practice, additional substances other than inert diluents, e.g., tableting lubricants and other tableting aids such a magnesium stearate and microcrystalline cellulose.
- the dosage forms may also comprise buffering agents. They may optionally contain opacifying agents and can also be of a composition that they release the active ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner.
- buffering agents include polymeric substances and waxes.
- Dosage forms for topical or transdermal administration of a compound of this invention include ointments, pastes, creams, lotions, gels, powders, solutions, sprays, inhalants or patches.
- the active component is admixed under sterile conditions with a pharmaceutically acceptable carrier and any needed preservatives or buffers as may be required.
- Ophthalmic formulation, eardrops, and eye drops are also contemplated as being within the scope of this invention.
- the present invention contemplates the use of transdermal patches, which have the added advantage of providing controlled delivery of a compound to the body.
- Such dosage forms are prepared by dissolving or dispensing the compound in the proper medium.
- Absorption enhancers can also be used to increase the flux of the compound across the skin. The rate can be controlled by either providing a rate controlling membrane or by dispersing the compound in a polymer matrix or gel.
- the compounds of the invention are useful as inhibitors of voltage-gated sodium ion channels or calcium channels, preferably N- type calcium channels.
- the compounds and compositions of the invention are inhibitors of one or more of NaVl.1, NaVl.2, NaVl.3, NaV1.4, NaVl.5, NaVl.6, NaVl.7, NaVl.8, NaVl.9, or CaV2.2, and thus, without wishing to be bound by any particular theory, the compounds and compositions are particularly useful for treating or lessening the severity of a disease, condition, or disorder where activation or hyperactivity of one or more of NaVl.1, NaV1.2, NaV1.3, NaV1.4, NaV1.5, NaVl.6, NaVl.7, NaVl.8, NaVl.9, or CaV2.2 is implicated in the disease, condition, or disorder.
- NaVl.1, NaVl.2, NaVl.3, NaVl.4, NaVl.5, NaVl.6, NaV1.7, NaVl.8, NaVl.9, or CaV2.2 is implicated in a particular disease, condition, or disorder
- the disease, condition, or disorder may also be referred to as a "NaVl.1, NaVl.2, NaVl .3, NaVl.4, NaVl.5, NaVl.6, NaVl.7, NaVl.8 or NaV1.9-mediated disease, condition or disorder” or a "CaV2.2-mediated condition or disorder”.
- the present invention provides a method for treating or lessening the severity of a disease, condition, or disorder where activation or hyperactivity of one or more of NaVl.1, NaVl.2, NaVl.3, NaVl.4, NaVl.5, NaVl.6, NaVl.7, NaVl.8, NaVl.9, or CaV2.2 is implicated in the disease state.
- NaVl.1, NaV1.2, NaVl.3, NaVl .4, NaV1.5, NaVl.6, NaVl.7, NaVl.8, NaVl.9, or CaV2.2 may be assayed according to methods described generally in the Examples herein, or according to methods available to one of ordinary skill in the art.
- the compounds and pharmaceutically acceptable compositions of the present invention can be employed in combination therapies, that is, the compounds and pharmaceutically acceptable compositions can be administered concurrently with, prior to, or subsequent to, one or more other desired therapeutics or medical procedures.
- the particular combination of therapies (therapeutics or procedures) to employ in a combination regimen will take into account compatibility of the desired therapeutics and/or procedures and the desired therapeutic effect to be achieved.
- the therapies employed may achieve a desired effect for the same disorder (for example, an inventive compound may be administered concurrently with another agent used to treat the same disorder), or they may achieve different effects (e.g., control of any adverse effects).
- additional therapeutic agents that are normally administered to treat or prevent a particular disease, or condition, are known as "appropriate for the disease, or condition, being treated".
- exemplary additional therapeutic agents include, but are not limited to: nonopioid analgesics (indoles such as Etodolac, Indomethacin, Sulindac, Tolmetin; naphthylalkanones such sa Nabumetone; oxicams such as Piroxicam; para-aminophenol derivatives, such as Acetaminophen; propionic acids such as Fenoprofen, Flurbiprofen, Ibuprofen, Ketoprofen, Naproxen, Naproxen sodium, Oxaprozin; salicylates such as Asprin, Choline magnesium trisalicylate, Diflunisal; fenamates such as meclofenamic acid, Mefenamic acid; and pyrazoles such as Phenylbutazone); or opioid (narcotic)
- nondrag analgesic approaches may be utilized in conjunction with administration of one or more compounds of the invention.
- anesthesiologic intraspinal infusion, neural blocade
- neurosurgical neurolysis of CNS pathways
- neurostimulatory transcutaneous electrical nerve stimulation, dorsal column stimulation
- physiatric physical therapy, orthotic devices, diathermy
- psychologic psychologic
- the amount of additional therapeutic agent present in the compositions of this invention will be no more than the amount that would normally be administered in a composition comprising that therapeutic agent as the only active agent.
- the amount of additional therapeutic agent in the presently disclosed compositions will range from about 50% to 100% of the amount normally present in a composition comprising that agent as the only therapeutically active agent.
- the present invention in another aspect, includes a composition for coating an implantable device comprising a compound of the present invention as described generally above, and in classes and subclasses herein, and a earner suitable for coating said implantable device.
- the present invention includes an implantable device coated with a composition comprising a compound of the present invention as described generally above, and in classes and subclasses herein, and a carrier suitable for coating said implantable device.
- Suitable coatings and the general preparation of coated implantable devices are described in US Patents 6,099,562; 5,886,026; and 5,304,121.
- the coatings are typically biocompatible polymeric materials such as a hydrogel polymer, polymethyldisiloxane, polycaprolactone, polyethylene glycol, polylactic acid, ethylene vinyl acetate, and mixtures thereof.
- the coatings may optionally be further covered by a suitable topcoat of fluorosilicone, polysaccarides, polyethylene glycol, phospholipids or combinations thereof to impart controlled release characteristics in the composition.
- Another aspect of the invention relates to inhibiting one or more of
- biological sample includes, without limitation, cell cultures or extracts thereof; biopsied material obtained from a mammal or extracts thereof; and blood, saliva, urine, feces, semen, tears, or other body fluids or extracts thereof.
- NaVl.5, NaVl.6, NaVl.7, NaVl.8, NaVl .9, or CaV2.2 activity in a biological sample is useful for a variety of purposes that are known to one of skill in the art.
- Examples of such memeposes include, but are not limited to, the study of sodium ion channels in biological and pathological phenomena; and the comparative evaluation of new sodium ion channel inhibitors.
- Preperative HPLC was preformed using a Gilson HPLC system equipped with a Phenomenex 50 x 21.2 mm luna-5 ⁇ Cl 8 column.
- the preperative HPLC eluting system was 5-99% acetonitrile in H 2 O with 0.035% v/v trifluoroacetic acid using a 12 minute linear gradient and a flow rate of 30.0 mL/minute.
- Silica gel chromatography was performed using silica gel-60 with a particle size of 230-400 mesh. Microwave reactions were performed using an Emerys Optimizer.
- Compounds of the invention are useful as antagonists of voltage-gated sodium ion channels. Antagonist properties of test compounds were assessed as follows. Cells expressing the NaV of interest were placed into microtiter plates. After an incubation period, the cells were stained with fluorescent dyes sensitive to the transmembrane potential. The test compounds were added to the microtiter plate. The cells were stimulated with either a chemical or electrical means to evoke a NaV dependent membrane potential change from unblocked channels, which was detected and measured with trans-membrane potential- sensitive dyes. Antagonists were detected as a decreased membrane potential response to the stimulus.
- the optical membrane potential assay utilized voltage-sensitive FRET sensors described by Gonzalez and Tsien (See, Gonzalez, J. E. and R.
- VIPR optical membrane potential assay method with chemical stimulation
- CHO cells endogenously expressing a NaV 1.2 type voltage-gated NaV are seeded in 96-well poly-lysine coated plates at 60,000 cells per well.
- Other subtypes are performed in an analogous mode in a cell line expressing the NaV of interest.
- a 15 uM CC2-DMPE solution is prepared by mixing 5 mM coumarin stock solution with 10% Pluronic 127 1:1 and then dissolving the mix in the appropriate volume of BS#2.
- the cells are loaded with 80 ⁇ L of the CC2-DMPE solution. Plates are incubated in the dark for 30 minutes at room temperature.
- CC2-DMPE is removed and the cells are washed twice with 225 ⁇ L of BS#2. As before, the residual volume should be 40 ⁇ L.
- the cells are loaded with 80 ⁇ L of the DiSBAC 2 (3) solution, after which test compound, dissolved in DMSO, is added to achieve the desired test concentration to each well from the drug addition plate and mixed thoroughly.
- the volume in the well should be roughly 121 ⁇ L.
- the cells are then incubated for 20-30 minutes.
- the data is further reduced by calculating the initial (Ri) and final (Rf) ratios. These are the average ratio values during part or all of the pre-stimulation period, and during sample points during the stimulation period.
- baseline 2-7 sec and final response is sampled at 15-24 sec.
- Control responses are obtained by performing assays in the presence of a compound with the desired properties (positive control), such as tetracaine, and in the absence of pharmacological agents (negative control). Responses to the negative (N) and positive (P) controls are calculated as above.
- the compound antagonist activity A is defined as:
- ⁇ ⁇ - ⁇ -*100 .
- Bath Solution #1 NaCl 160, KCl 4.5, CaCl 2 2, MgCl 2 1, HEPES 10, pH 7.4 with NaOH
- CC2-DMPE prepared as a 5 mM stock solution in DMSO and stored at -2O 0 C
- DiSBAC 2 (3) prepared as a 12 mM stock in DMSO and stored at -
- ABSC 1 prepared as a 200 mM stock in distilled H 2 O and stored at room temperature
- CHO cells are grown in DMEM (Dulbecco's Modified Eagle Medium; GibcoBRL #10569-010) supplemented with 10% FBS (Fetal Bovine Serum, qualified; GibcoBRL #16140-071) and 1% Pen-Strep (Penicillin-Streptomycin; GibcoBRL #15140- 122).
- Cells are grown in vented cap flasks, in 90% humidity and 10% CO 2 , to 100% confluence. They are usually split by trypsinization 1:10 or 1:20, depending on scheduling needs, and grown for 2-3 days before the next split.
- VIPR optical membrane potential assay method with electrical stimulation
- HEK293 cells stably expressing NaVl.3 are plated into 96-well microtiter plates. After an appropriate incubation period, the cells are stained with the voltage sensitive dyes CC2-DMPE/DiSBAC2(3) as follows.
- ABSCl The required amount of 10 mM DISBAC 2 (3) is added to a 50 ml conical tube and mixed with 1 ⁇ L 10% pluronic for each mL of solution to be made and vortexed together. Then HBSS/HEPES is added to make up 2X solution. Finally, the ABSCl is added .
- the 2X DiSBAC 2 (3) solution can be used to solvate compound plates.
- the electrical stimulation instrument and methods of use are described in ION Channel Assay Methods PCT/US01/21652, herein incorporated by reference.
- the instrument comprises a microtiter plate handler, an optical system for exciting the coumarin dye while simultaneously recording the coumarin and oxonol emissions, a waveform generator, a current- or voltage-controlled amplifier, and a device for inserting electrodes in well. Under integrated computer control, this instrument passes user-programmed electrical stimulus protocols to cells within the wells of the microtiter plate.
- ABSCl stock (400X) 200 mM ABSCl in water
- [00314] Use the current-controlled amplifier to deliver stimulation wave pulses for 3 s. Two seconds of pre-stimulus recording are performed to obtain the un-stimulated intensities. Five seconds of post-stimulation recording are performed to examine the relaxation to the resting state.
- the data is further reduced by calculating the initial (Rj) and final (Rf) ratios. These are the average ratio values during part or all of the pre-stimulation period, and during sample points during the stimulation period.
- the response to the stimulus R R/Ri is then calculated.
- Control responses are obtained by performing assays in the presence of a compound with the desired properties (positive control), such as tetracaine, and in the absence of pha ⁇ nacological agents (negative control). Responses to the negative (N) and positive (P) controls are calculated as above.
- the compound antagonist activity ⁇ is defined as:
- TTX-resistant sodium currents were recorded from DRG somata using the whole-cell variation of the patch clamp technique. Recordings were made at room temperature ( ⁇ 22o C) with thick walled borosilicate glass electrodes (WPI; resistance 3-4 M ⁇ ) using an Axopatch 200B amplifier (Axon Instruments). After establishing the whole- cell configuration, approximately 15 minutes were allowed for the pipette solution to equilibrate within the cell before beginning recording. Currents were lowpass filtered between 2-5 kHz and digitally sampled at 10 kHz. Series resistance was compensated 60- 70% and was monitored continuously throughout the experiment. The liquid junction potential (-7 mV) between the intracellular pipette solution and the external recording solution was not accounted for in the data analysis. Test solutions were applied to the cells with a gravity driven fast perfusion system (SF-77; Warner Instruments).
- SF-77 gravity driven fast perfusion system
- Intracellular solution in mM: Cs-F (130), NaCl (10), MgC12 (1),
- Extracellular solution (in mM): NaCl (138), CaC12 (1.26), KCl (5.33),
- KH2PO4 (0.44), MgC12 (0.5), MgSO4 (0.41), NaHCO3 (4), Na2HPO4 (0.3), glucose (5.6), HEPES (10), CdC12 (0.4 ), NiCl2 (0.1), TTX (0.25 x 10 "3 ).
- Multiplamp 700A amplifier (Axon Inst). Borosilicate pipettes (4-5 MOhm) were filled with (in niM):150 K-gluconate, 10 NaCl, 0.1 EGTA, 10 Hepes, 2 MgCl 2 , (buffered to pH 7.34 with KOH). Cells were bathed in (in mM): 140 NaCl, 3 KCl, 1 MgCl , 1 CaCl , and 10 Hepes). Pipette potential was zeroed before seal formation; liquid junction potentials were not corrected during acquisition. Recordings were made at room temperature.
- Activity data for selected compounds against NaV 1.3 channel is displayed below in Table 4.
- the activity range is as follows:
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AU2006244206A AU2006244206A1 (en) | 2005-05-10 | 2006-05-08 | Bicyclic derivatives as modulators of ion channels |
JP2008511228A JP2008540539A (en) | 2005-05-10 | 2006-05-08 | Bicyclic derivatives as regulators of ion channels |
IL187224A IL187224A0 (en) | 2005-05-10 | 2007-11-08 | Bicyclic derivatives and pharmaceutical compositions containing the same |
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WO2008097428A2 (en) * | 2007-02-02 | 2008-08-14 | Irm Llc | Compounds and compositions as modulators of gpr119 activity |
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JP2012126751A (en) | 2012-07-05 |
RU2007145434A (en) | 2009-06-20 |
US20090012117A1 (en) | 2009-01-08 |
MX2007014180A (en) | 2008-01-14 |
JP2008540539A (en) | 2008-11-20 |
US8362032B2 (en) | 2013-01-29 |
CA2607670A1 (en) | 2006-11-16 |
NO20076306L (en) | 2007-12-07 |
US20110059965A1 (en) | 2011-03-10 |
CN101218235A (en) | 2008-07-09 |
US7786137B2 (en) | 2010-08-31 |
KR20080015102A (en) | 2008-02-18 |
IL187224A0 (en) | 2008-02-09 |
ZA200709961B (en) | 2009-07-29 |
AU2006244206A1 (en) | 2006-11-16 |
EP1891063B1 (en) | 2012-07-25 |
WO2006122014A3 (en) | 2006-12-28 |
EP1891063A2 (en) | 2008-02-27 |
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