WO2006040351A1 - Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents - Google Patents
Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents Download PDFInfo
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- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/06—Peri-condensed systems
Definitions
- the present invention relates to non steroidal compounds with affinity for estrogen receptors. More specifically, the invention relates to indazole, benzisoxazole and benzisothiazole compounds as estrogen receptor subtype modulators and/or selective estrogen receptor modulators (SERM). The present invention also relates to pharmaceutical compositions containing these compounds, and to the use of these compounds in the treatment of estrogen-related diseases. Background of the invention
- Perimenopause is the period of years in which normal ovulatory cycles give way to cessation of menses. This time is marked by irregular menstrual cycles. Cycle length begins to increase, and ovulation and fertility decrease. Menopause is typically defined as the point, after the loss of ovarian activity, when permanent cessation of menstruation occurs.
- estrogens are involved in various other physiological processes such as the modulation of the immune response and development of cancer (breast, endometrium, colon, prostate).
- estrogen receptor is a nuclear receptor with two known different subtypes.
- ER subtypes share about 50% identity in the ligand- binding domain (Kuiper et al, Endocrinology, 1998, 139(10), 4252-4263), they have similar Estradiol (E 2 ) binding affinities and can hetero- or homodimerize (Cowley, J Biol Chem, 1997, 272, 19858-19862) to form a signalling complex (Kuiper et al, Endocrinology, 1997, 138(10), 863-870; Kuiper, Proc. Natl. Acad. Sci. USA, 1996, 93, 5925-5930).
- ER ⁇ is strongly expressed in a number of tissues including prostate epithelium (Weihua Z, Proc. Natl. Acad.
- Neoplasia 1997, 2, 393-402
- lung intestine
- vascular endothelium parts of the brain
- ERa is expressed in breast epithelium (Palmieri C, Endocr. Relat. Cancer, 2002, 9, 1-13)
- uterus uterus
- bone ovary theca cells
- prostate stroma Cho S., MoI.
- estrogen-related diseases such as Alzheimer's disease, menopausal complaints (e.g. hot flushes, vaginal dryness, atrophy), cognitive functions (e.g. anxiety, depression, dementia), osteoporosis, estrogen dependant tumours (uterine, breast, colon, or prostate cancers), benign prostatic hyperplasia, bladder control, hearing disorders, stroke, leukaemia, hypertension, obesity, irritable bowel syndrome, or reproductive aspects such as contraception or infertility.
- menopausal complaints e.g. hot flushes, vaginal dryness, atrophy
- cognitive functions e.g. anxiety, depression, dementia
- osteoporosis e.g. anxiety, depression, dementia
- estrogen dependant tumours uterine, breast, colon, or prostate cancers
- benign prostatic hyperplasia bladder control, hearing disorders, stroke, leukaemia, hypertension, obesity, irritable bowel syndrome, or reproductive aspects such as contraception or infertility.
- ER ⁇ -selective ligands may be therapeutically useful agents to treat chronic intestinal and joint inflammation (Harris et coll., Endocrinology, 2003, 144, 4241-4249). According to Warembourg M and Leroy D (Brain Res v 2004, 26; 55-66), ER ⁇ was only detected within the rat dorsal raphe nucleus. In contrast, only ER ⁇ -immunoreactivity was seen in the septum, and in the magnocellular supraoptic, paraventricular, arcuate, and premammillary nuclei. These observations provide evidence of a distinct neuroanatom ⁇ cal pattern for the two subtypes of the ERs.
- ER ⁇ modulators should be of interest as neuroprotective, antidepressant or anxiolytic agents.
- estrogen receptors can suppress NFKB-mediated transcription in both a ligand-dependent and independent manner (Quaedackers, et al., Endocrinology 2001,142: 1156-1166; Bhat, et al., Journal of Steroid Biochemistry & Molecular Biology 1998, 67: 233-240; Pelzer, et al., Biochemical & Biophysical Research Communications 2001, 286: 1153-7). These data show the link between selective estrogen receptor modulators and NFKB which is implicated in apoptosis and immune/inflammatory response. Many compounds have been described as estrogen receptor agonists or antagonists as they respectively had a similar activity or blocked the activity of estradiol.
- Such agonist compounds could be used as contraceptive agents in premenopausal women.
- Antagonists are widely used therapeutic agents in the treatment of breast cancer (Vogel, Anticancer Drugs, 2003, 14, 265-273) whereas agonists are used in HRT (Hormone Replacement Therapy) in post menauposal women (Burkman, Minerva Ginecol, 2003, 55, 107-116) to treat hot flushes, vaginal atrophy.
- SERMs are compounds that present mixed activities depending on the tissue (McDonnell, J Soc Gynecol Invest, 2000, 7, S10-S15). SERMs might have utility for the treatment of osteoporosis, cardiovascular diseases and related estrogen receptor diseases. Estrogen receptors adopt different conformations when binding ligands.
- Benzisoxazole intermediates used in the preparation of diuretic compounds are described in Chem Pharm Bull 1991, 39(7): 1760-1772.
- the synthesis of various benzisothiazoles is described in Tetrahedron 1988, 44(10): 2985-2992.
- Summary of the invention One aspect of this invention is to provide indazole, benzisoxazole and benzisothiazole compounds, which have an affinity for the estrogen receptors.
- Another aspect of this invention is to provide a pharmaceutical composition containing an indazole, benzisoxazole or benzisothiazole compound as mentioned above.
- a further aspect of this invention is to provide the use of an indazole, benzisoxazole, or benzisothiazole compound in the manufacture of a medicament for treating or preventing various diseases mediated by estrogen receptors.
- the indazole, benzisoxazole or benzisothiazole compounds of this invention can be represented by the following general formula (I) :
- R 2 and R 3 are each independently hydrogen or a hydroxyl, halogen, nitro, cyano, (d-C 6 )alkyl, (C 3 -C 6 )cycloalkyl, (d-C 6 )alkoxy, trifluoromethyl, -NR 7 R 8 ,
- R 2 can also be a phenyl or a saturated or unsaturated heterocycle, wherein the phenyl is unsubstituted or substituted by at least one substituent selected from the group consisting of a hydroxyl, a halogen, a nitro, a cyano, a (Ci-C 3 )alkyl, a (CrC 3 )alkoxy, a trifluoromethyl and a saturated heterocyclic radical;
- - X is O, S, SO, SO 2 or NR 4 ;
- R 4 is hydrogen or a (Ci-C 6 )alkyl, (CrCeJcycloalkyl, phenyl, phenyl(Ci-C 3 )alkyl, (CrC 3 )alkyl substituted by a saturated heterocyclic radical, -COR 7 , -CO 2 R 7 or -SO 2 NR 7 R 8 group, wherein the phenyl is unsubstituted or substituted by at least one substituent selected from the group consisting of a hydroxyl, a halogen, a nitro, a cyano, a (CrC 3 )alkyl, a (Ci-C 3 )alkoxy, a trifluoromethyl, a phenyl(CrC 3 )alkyl and a phenyl(CrC 3 )alkoxy;
- R 5 , R 6 , R 7 and R 8 are each independently hydrogen or a (CrC 6 )alkyl or (C 3 -C 6 )cycloalkyl group;
- R 9 is hydrogen, a (d-C 6 )alkyl, a phenyl or a saturated or unsaturated heterocyclic radical, wherein the phenyl is unsubstituted or substituted by at least one substituent selected from the group consisting of a hydroxyl, a halogen, a nitro, a cyano, a (d-C 3 )alkyl, a (Ci-C 3 )alkoxy, a trifluoromethyl and a saturated heterocyclic radical;
- - Rio and Rn are each independently hydrogen or a cyano, (Ci-QJalkyl, -CO-phenyl, -CO(unsaturated heterocyclic radical) or -CONR 7 R 8 group, wherein the phenyl is unsubstituted or substituted by at least one substituent selected from the group consisting of a hydroxyl, a halogen, a nitro, a cyano, a (CrC 3 )alkyl, a (CrC 3 )alkoxy and a trifluoromethyl;
- - A is a (C 3 -Ci 5 )cycloalkyl, a (C 3 -C 15 )cycloalkene, a phenyl or a naphthyl, wherein the cycloalkyl or the cycloalkene is unsubstituted or substituted by at least one (Q-C ⁇ jalkyl, and wherein the phenyl or the naphthyl is unsubstituted or substituted by at least one substituent selected from the group consisting of a hydroxyl, a halogen, a nitro, a cyano, a (Ci-C 3 )alkyl, a (Ci-C 3 )alkoxy and a trifluoromethyl; - when X is NR 4 , Y and R 2 together with the indazole ring bearing them can also form a lH-pyrano[4,3,2-cd]indazole.
- the compounds of formula (I) are claimed as such except that: 1/ when X is O, S or NR 4 , R 1 is hydrogen or a (Q-C ⁇ jalkyl, (C 3 -C 6 )cycloalkyl or trifluoromethyl, and Y is a direct bond, then A is not optionally substituted phenyl or optionally substituted naphthyl;
- (CrC 6 )alkyl is understood as meaning a linear or branched hydrocarbon chain having 1 to 6 carbon atoms.
- a (CrC 6 )alkyl radical is for example a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, isopentyl or hexyl radical.
- Preferred alkyl radicals are those having 1, 2 or 3 carbon atoms.
- halogen is understood as meaning a chlorine, bromine, iodine or fluorine atom.
- (C 3 -Ci 5 )cycloalkyl is understood as meaning a saturated, fused or bridged, mono-, bi- or tricyclic hydrocarbon having 3 to 15 carbon atoms.
- a monocyclic radical is for example a cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl or cyclododecyl radical.
- a fused, bridged or spiranic, dicyclic or tricyclic radical is for example a norbornyl, bornyl, isobomyl, noradamantyl, adamantyl or spiro[5,5]undecanyl radical.
- Preferred cycloalkyls are those having 5 to 12 carbon atoms, the cyclopentyl, cyclohexyl, cycloheptyl and adamantyl radicals being especially preferred.
- a (C 3 -C 6 )cycloalkyl radical is for example a cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl radical.
- the term "(C 3 -Ci 5 )cycloalkene” is understood as meaning an unsaturated (C 3 -Ci 5 )cycloalkyl, the latter term being as defined above.
- (CrC 6 )alkoxy is understood as meaning a group OR in which R is a (CrC 6 )alkyl as defined above.
- a (CrCe)alkoxy radical is for example a methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, tert-butoxy, n-pentyloxy or isopentyloxy radical.
- Preferred alkoxy radicals are those having 1, 2 or 3 carbon atoms.
- a “salt” is understood as meaning an alkali metal salt or alkaline earth metal salt, such as a sodium, potassium, magnesium or calcium salt, or a salt with an ammonium or with an organic amine such as triethylamine, ethanolamine or tris-(2-hydroxyethyl)amine.
- heterocycle or “heterocyclic”, is understood as meaning a saturated or unsaturated 5- to 8-membered monocyclic radical containing one or two heteroatoms chosen from O, N and S.
- unsaturated heterocyclic radicals include, but are not limited to, the furyl, imidazolinyl, imidazolyl, pyridyl, pyrazinyl, pyrazolyl, pyridazinyl, pyrimidinyl, pyrrolyl, quinolinyl, isoquinolinyl, thiazolyl, thienyl benzimidazolyl, benzoxazolyl, benzothiazolyl, indolyl and indazolyl radicals.
- saturated heterocyclic radicals include, but are not limited to, the imidazolidinyl, morpholinyl, thiomorpholinyl, piperidyl, piperazinyl, pyrrolidinyl, pyrazolidinyl, tetrahydrofuryl, 2-oxopiperazinyl, 2-oxopiperidyl and 2-oxopyrrolidinyl radicals, the morpholinyl and piperidyl radicals being preferred.
- the compounds of formula (I) can form addition salts with acids.
- Such salts especially those which are pharmaceutically acceptable, are encompassed by the present invention.
- Examples of salts include those formed, for example with inorganic acids such as hydrochloric acid, hydrobrom ⁇ c acid, sulfuric acid, nitric acid, phosphoric acid, or with organic carboxylic acids such as acetic acid, propionic acid, glycolic acid, pyruvic acid, oxalic acid, malic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, cinnamic acid, mandelic acid, methanesulfonic acid.
- inorganic acids such as hydrochloric acid, hydrobrom ⁇ c acid, sulfuric acid, nitric acid, phosphoric acid
- organic carboxylic acids such as acetic acid, propionic acid, glycolic acid, pyruvic acid, oxalic acid, malic acid, fumaric acid, tartaric acid, citric acid,
- the present invention also encompasses stereoisomeric forms of the compounds of formula (I).
- Preferred compounds of formula (I) include those that fulfil at least one of the following conditions:
- - Ri is hydrogen, a (d-C 6 )alkyl, a phenyl(d-C 3 )alkyl, a (Ci-C 3 )alkyl substituted by a saturated heterocyclic radical or a -SO 2 NR 7 R 8 group ;
- R 2 is hydrogen, hydroxyl, (CrC 6 )alkyl or halogen
- - A is a (C 3 -C 15 )cycloalkyl optionally substituted by at least one (CrC 6 )alkyl;
- Particularly preferred compounds are those wherein:
- - Ri is hydrogen or a -SO 2 NR 7 R 8 group in which R 7 and Ra are each independently hydrogen or a (C r C 6 )alkyl;
- - A is a (C 3 -Ci 2 )cycloalkyl optionally substituted by 1 to 4 (d-C 6 )alkyls.
- the following compounds are also preferred: a) Compounds where X is NR 4 and - R 1 is hydrogen or a (d-QOalkyl, phenyl(d-C 3 )alkyl or -SO 2 NR 7 R 8 group;
- R 2 and R 3 are each hydrogen
- R 4 is hydrogen or a (d-C 6 )alkyl, phenyl, phenyl(d-C 3 )alkyl, (d-C 3 )alkyl substituted by a saturated heterocyclic radical, -SO 2 NR 7 R 8 or -COR 9 group, where the phenyl is optionally substituted by at least one substituent selected from the group consisiting of a hydroxyl, a halogen and a phenyI(d-C 3 )alkoxy;
- R 7 and R 8 are each independently hydrogen or a (Q-Cejalkyl; - R 9 is hydrogen or a (CrC 6 )alkyl;
- R 10 and R 11 are each indepently hydrogen, cyano or a -CONR 7 R 8 group;
- - A is a (C 3 -Ci 5 )cycloalkyl optionally substituted by at least one (d-C 6 )alkyl or a phenyl optionally substituted by a hydroxyl or a (d-C 3 )alkoxy;
- - Y and R 2 together with the indazole ring bearing them can also form a lH-pyrano[4,3,2-cd]indazole; provided that when Ri is H or (d-C 6 )alkyl and Y is a direct bond, then A is not optionally substituted phenyl.
- R 2 is hydrogen, halogen, hydroxyl or (d-C 6 )alkoxy
- - Rio and Rn are each indepently hydrogen or cyano
- R 2 and R 3 are each hydrogen, hydroxyl or halogen
- R 7 and R 8 are each indepently hydrogen or a (d-C 6 )alkyl; - Rio and Rn are each indepently hydrogen or cyano;
- - A is a (C 3 -Ci 5 )cycloalkyl optionally substituted by at least one (Q-C ⁇ alkyl;
- the compounds of the invention can be used alone or in combination with other active ingredients for the treatment or the prevention of any estrogen-dependent disorder or for the management of estrogen- regulated reproductive functions, in humans (Njar VC and Brodie AM, Drugs,
- SERMs are especially useful in the treatment or prevention of benign breast diseases in women, gynecomastia in men and in benign or malignant breast tumors with or without metastasis both in men and women (A. M. Brodie and V. C. Njar, Steroids, 2000, 65: 171-179 ; K.I. Pritchard, Cancer,
- SERMs are therefore useful to treat or prevent endometriosis, benign uterine diseases or benign or malignant uterine tumors with or without metastasis in women (A. M. Brodie and V. C.
- SERMs can be used to treat abnormal or untimely ovarian estrogen production such as polycystic ovary syndrome or precocious puberty, respectively (Bulun et al., J Steroid Biochem MoI Biol, 1997, 61: 133-139).
- Ovarian as well as non-ovarian but estrogen- producing benign or malignant tumors with or without metastasis (Sasano H and Harada N, Endocrine Reviews, 1998, 19: 593-607) may also benefit from treatment with SERMs according to the invention.
- SERMs can be used to treat or to prevent benign (Sciarra F and Toscano V, Archiv Androl, 2000, 44: 213-220) or malignant prostate tumors with or without metastasis (Auclerc G et al., Oncologist, 2000, 5: 36-44) or to treat, prevent or control spermatogenesis functions or malfunctions, in men as well as in male wild or domestic animals.
- Estrogens are also known to be implicated in the regulation of bone turnover; therefore, SERMs may be useful, alone or in combination with other antiresorbtive or proosteogenic agents, in the treatment or prevention of bone disorders according to appropriate therapeutic sequences or regimens.
- estrogens are involved in the regulation of the balance between Thi and Th 2 predominant immune functions and may therefore be useful in the treatment or prevention of gender-dependent auto-immune diseases such as lupus, multiple sclerosis, rheumatoid arthritis.
- Another aspect of the invention thus consists in a method for the treatment or prevention of the above-mentioned diseases or disorders, wherein a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt thereof is administered to a patient or animal in need of such treatment or prevention.
- a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt thereof is administered to a patient or animal in need of such treatment or prevention.
- Co-administration with one or more active substances suitable for the treatment or prevention of said diseases or disorders is also encompassed by the present invention.
- the compounds of the invention can in particular be used in the following indications:
- treatment of cognitive dysfunction for instance as neuroprotective, antidepressant or anxiolytic agents.
- treatment of schizophrenia or neurodegenerative diseases such as Alzheimer's disease or Parkinson's disease.
- estrogen-dependent disorders for example hot flushes, osteoporosis, perimenopausal mood, perimenstrual syndromes, vasomotor related syndromes, vaginal atrophy or dryness, sexual dysfunction such as libido decrease, urinary incontinence, pruritus, local infections of the genital tract.
- said compounds can be combined with a sexual endocrine therapeutic agent.
- control or management of reproductive functions such as male or female fertility, pregnancy, abortion, contraception, delivery, or estrogen-related skin diseases.
- said compounds can be combined with a LH-RH agonist or antagonist, an estroprogestative contraceptive, a progestin, an antiprogestin or a prostaglandin. • prevention or treatment of benign or malignant diseases of the breast, the uterus or the ovary, or of polycystic ovary syndrome.
- said compounds can be combined with an antiestrogen, a progestin or a LH-RH agonist or antagonist.
- said compounds can be combined with an antiandrogen, a progestin, a lyase inhibitor or a LH-RH agonist.
- the compounds of the invention can also be combined with a radiotherapeutic agent; a chemiotherapeutic agent such as a nitrogenated mustard analogue like cyclophosphamide, melphalan, iphosphamide, or trophosphamide; an ethylenimine like thiotepa; a nitrosourea like carmustine; a lysed agent like temozolomide or dacarbazine; an antimetabolite of folic acid like methotrexate or raltitrexed; a purine analogue like thioguanine, cladribine or fludarabine; a pyrimidine analogue like fluorouracil, tegafur or gemcitabine; an
- the term “combined” or “combination” refers to any protocol for the co-administration of a compound of formula (I) and one or more other pharmaceutical substances, irrespective of the nature of the time of administration and the variation of dose over time of any of the substances.
- the co-administration can for example be parallel, sequential or over an extended period of time.
- the compounds of formula (I) or their pharmaceutically acceptable salts may be administered, for example, orally, topically, parenterally, in dosage unit formulations containing conventional non-toxic pharmaceutically acceptable carriers, adjuvants and/or vehicles. These dosage forms are given as examples, but other dosage forms may be developed by those skilled in the art of formulation, for the administration of the compounds of formula (I).
- parenteral as used herein includes subcutaneous injections, intravenous, intramuscular or intrasternal injections or infusion techniques.
- warm-blooded animals such as mice, rats, horses, cattle sheep, dogs, cats, etc.
- the compounds of the invention are effective in the treatment of humans.
- compositions containing the active ingredient may be in a form suitable for oral use, for example, as tablets, troches, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsions, hard or soft capsules, or syrups or elixirs.
- Compositions intended for oral use may be prepared according to any method known in the art for the manufacture of pharmaceutical compositions and such compositions may contain one or more agents selected from the group consisting of sweetening agents, flavoring agents, coloring agents and preserving agents in order to provide pharmaceutically elegant and palatable preparations. Tablets contain the active ingredient in admixture with non-toxic pharmaceutically acceptable excipients, which are suitable for the manufacture of tablets.
- excipients may be for example, inert diluents, such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example, corn starch, or aiginic acid; binding agents, for example starch, gelatin or acacia, and lubricating agents, for example, magnesium stearate, stearic acid or talc.
- the tablets may be uncoated or they may be coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period.
- a time delay material such as glyceryl monostearate or glyceryl distearate may be employed.
- Formulations for oral use may also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate, or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin, or olive oil.
- Aqueous suspensions contain the active ingredient in admixture with excipients suitable for the manufacture of aqueous suspensions.
- excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydroxy-propylmethylcellulose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia; dispersing or wetting agents such as a naturally- occurring phosphatide, for example lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol such as polyoxyethylene sorbitol monooleate, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene sorbitan monooleate.
- dispersing or wetting agents such as a naturally- occurring phosphatide, for example lecithin, or condensation products of an al
- the aqueous suspensions may also contain one or more preservatives, for example ethyl, or n-propyl, p-hydroxybenzoate, one or more coloring agents, one or more flavoring agents, and one or more sweetening agents, such as sucrose, saccharin or aspartame.
- preservatives for example ethyl, or n-propyl, p-hydroxybenzoate
- coloring agents for example ethyl, or n-propyl, p-hydroxybenzoate
- coloring agents for example ethyl, or n-propyl, p-hydroxybenzoate
- flavoring agents such as sucrose, saccharin or aspartame.
- sweetening agents such as sucrose, saccharin or aspartame.
- Oily suspensions may be formulated by suspending the active ingredient in a vegetable oil, for example arachis oil, olive oil, sesame oil or coconut oil, or in a mineral oil such as liquid paraffin.
- the oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol. Sweetening agents such as those mentioned above, and flavoring agents may be added to provide a palatable oral preparation. These compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
- Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, suspending agent and one or more preservatives.
- compositions of the invention may also be in the form of an oil- in-water emulsion.
- the oily phase may be a vegetable oil, for example olive oil or arachis oil, or a mineral oil, for example liquid paraffin or mixtures of these.
- Suitable emulsifying agents include naturally-occuring phosphatides, for example soy bean, lecithin, and esters or partial esters derived from fatty acids and hexitol anhydrides, for example sorbitan monooleate, and condensation products of the said partial esters with ethylene oxide, for example polyoxyethylene sorbitan monooleate.
- the emulsions may also contain sweetening and flavouring agents.
- the pharmaceutical compositions may be in the form of a sterile injectable aqueous or oleagenous suspension. This suspension may be formulated according to the known art using those suitable dispersing or wetting agents and suspending agents which have been mentioned above.
- the sterile injectable preparation may also be a sterile injectable solution or suspension in a non-toxic parenterally-acceptable diluent or solvent, for example as a solution in 1, 3-butane diol.
- Acceptable vehicles and solvents that may be employed include water, Ringer's solution and isotonic sodium chloride solution.
- sterile, fixed oils are conventionally employed as a solvent or suspending medium.
- any bland fixed oil may be employed including synthetic mono- or diglycerides.
- fatty acids such as oleic acid find use in the preparation of injectables.
- Dosage levels of the order of from about 0.001 mg to about 10 mg/kg of body weight per day are useful in the treatment or prevention of the above-mentioned diseases or disorders, or alternatively about 0.1 mg to about 100 mg per patient per day.
- 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 particular mode of administration.
- the indazole derivatives of formula (I) can be prepared according to general schemes Ia, Ib, Ic.
- ketone (5) is reacted with a suitable acid chloride of formula (2) by Friedel-Craft reaction following the procedure described by K L Kees (J Med Chem, 29, 11, 1986, 2329-2334) to give ketone (5).
- This ketone (5) can also be obtained by condensation of alkylmagnesium (4) on fluorobenzonitrile derivative (3) according to H. Shaffer (J Am Chem Soc, 1939, 61, 2175).
- the ketone (5) is then refluxed in EtOH in the presence of substituted hydrazine or in hydrazine hydrate to afford respectively the cyclised indazoles (6) and (7).
- the compound (7) can also be prepared by selective N-alkylation of indazole (6) using the conditions described by U. Lerch and J. K ⁇ nig (Synthesis, 1983, 2, 157-8) or the conditions described by J Chung and al! (Tetrahedron Letters, 1992, 33, 4717-20).
- the benzisothiazole derivatives of formula (I) can be prepared according to general scheme III.
- ketone (5) was reacted with phenylmethanethiol to give (44).
- the obtained compound (44) was refluxed in sulfuryl chloride followed by ammoniac treatment to afford cyclised benzisothiazole (45) according to the procedure described by D. M. Fink (Tetrahedron Letters, 1993, 34, 41, 6525- 6528).
- Demethylation of compounds (45) with either tribromoborane using the conditions described by J.F.W McOmie (Tetrahedron, 1968, 24, 2289-92) or HBr/AcOH or pyridinium hydrochloride gave the hydroxy benzisothiazole compounds (46).
- EXAMPLE 12 ⁇ -benzyloxy-S-cyclopentyl-lH-indazole A mixture of cydopentyl (4-benzyloxy-2-fluorophenyl) methanone (40 g, 0.13 mol) in hydrazine hydrate (50 ml) was refluxed overnight. After cooling to room temperature, the solid was filtered, dissolved in EtOAc, then washed with aqueous NH 4 CI and brine. The solution was dried over Na 2 SO 4 , filtered and concentrated under vacuum. Purification by flash chromatography
- EXAMPLE 16 3-cycloheptyl-6-methoxy-lH-indazole (45 %).
- EXAMPLE 20 Tertio-butyl- ⁇ -benzyloxy-B-cyclohexyl-lH-indazole-l- car boxy late At 0 0 C di-tert-butyldicarbonate (36.38 g, 0.166 mol) in acetonitrile (340 ml) was added on a mixture of 6-benzyloxy-3-cyclohexyl-lH-indazole (42.50 g, 0.138 mol), TEA (22 ml, 0.152 mol), acetonitrile (460 ml) and DMAP (3.40 g, 0.027 mol).
- EXAMPLE 27 3-cyclopentyl-l-(2-piperidin-l-yl-ethyl)-lH-indazol-6-ol, hydrochloride (90%). mp 120 0 C.
- Di-tert-butyl-dicarbonate in acetonitrile was mixed at 0 0 C with 6-methoxy-3- methyl-lH-indazole (prepared following the procedure described by F. Dennler, Tetrahedron, 22, 1966, 3131-3139) (26.27 g, 0.162 mol), acetonitrile (200 ml), triethylamine (25 ml, 0.178 mol), DMAP (3.96 g, 0.0324 mol). The mixture was stirred at room temperature overnight. Acetonitrile was concentrated under vacuum.
- EXAMPLE 43 l-[(teit-butoxycarbonyl)oxy]-6-methoxy-3-biOmo- methyl-lH-indazole l-[(tert-butoxycarbonyl)oxy]-6-methoxy-3-methyl-lH-indazole (25.2 g, 0.096 mol) was dissolved in CCI 4 and mixed with benzoyl peroxide (2.33 g, 9.6 mmol). N-bromosuccinimide (NBS, 18.8 g, 0.109 mol) was slowly added to this mixture and heated under reflux overnight. The mixture was cooled at room temperature, filtered on Celite®, the filtrate was concentrated under vacuum and flashed with toluene. 10.5 g of the expected product were obtained (32 %, as oil).
- EXAMPLE 45 2-(Z/E)-2-(6-methoxy-lH-indazol-3-yl)-3-(4- methoxy phenyl) prop-2-ene nitrile
- the reaction was complete, the mixture was filtered to obtain 3.53 g of the expected product (77 % as solid).
- EXAMPLE 54 3-(4-hydroxy-phenyl)-lH-pyrano[4,3,2-cd]indazol-7-ol, hydrochloride (15 %). mp 111°C.
- EXAMPLE 56 l-adamantyl(2-chloro-4,6-dihydroxyphenyl) methanone oxime l-adamantyl-(2-chloro-4,6-dihydroxyphenyl) methanone (1.9 g, 6.2 mmoles), hydroxylamine hydrochloride (100 g) and pyridine (50 ml) were refluxed for 4 h. The mixture was concentrated under vacuum, poured into water, extracted with ethyl acetate, washed with HCI IN, dried over Na 2 SO 4 and concentrated under vacuum to give the crude product. Flash chromatography (AcOEt/toluene 3/7) gave the pure oxime (1 g as a solid, 50%).
- EXAMPLE 62 3-(l-adamantyl)-6-benzyloxy-l,2-benzisoxazole l-adamantyl-(4-benzyloxy-2-fluorophenyl) methanone oxime (2.3 mg, 6 mM) in DMF (30 ml) was added at 0 0 C dropwise under N 2 , to a stirred suspension of NaH (0.61 g, 18 mM, 60 % oil dispersion) in DMF (10 ml). After the complete addition, the reaction mixture was allowed to warm to room temperature and poured into H 2 O. The precipitate was collected by filtration to give the expected product (2.06 g, 95 %). mp 132°C.
- Resorcinoi 100 g, 0.91 mol
- 4-hydroxyphenylacetic acid 138.4 g, 0.91 mol
- the mixture was stirred and heated at 50-60 0 C. After complete reaction, the mixture was cooled to room temperature and poured into a large volume of iced water. The crude product was filtered off and dried to yield trihydroxybenzoin (70 %). mp 211 0 C.
- EXAMPLE 71 l-[2-hydroxy-4-tetrahydiO-2H-pyran-2-yloxy)phenyl]-2- [4-(tetrahydro-2H-pyran-2-yloxy)phenyl]ethanone oxime
- a mixture of l-[2-hydroxy-4-(tetrahydro-2H-pyran-2-yloxy)]-2-[4-(tetrahydro-2H- pyran-2-yloxy) phenyl]ethanone (5 g, 12 mmol) and H 2 NOH, HCI (8.59 g, 12.3 mmol) was stirred for 24h in pyridine (65 ml) at room temperature.
- reaction mixture was poured into a large volume of 99/1 H 2 O/triethylamine and was then extracted with EtOAc. The organic solution was washed with brine. After drying over Na 2 SO 4 , EtOAc was evaporated. The residue was purified by flash column chromatography (toluene/l,4-dioxane 90/1 + TEA 1 %) to provide a colorless oil (5.05 g, 97 %).
- 2-benzisoxazole 3-methyl-l,2-benzisoxazol-6-ol (10 g, 67 mmoles) (prepared following M.A. Elkasaby, Indian J. Chem., 1987, 26, 620) and DMF (50 ml) were added to a mixture of tert-butyldimethylsilyl chloride (1.05 eq, 10.6 g), imidazole (2.5 eq, 11.4 g) and DMF (100 ml) under N 2 . The mixture was then stirred at room temperature for Ih, poured into water and extracted with ethyl acetate, dried over Na 2 SO 4 , filtered and concentrated under vacuum to give a crude product.
- EXAMPLE 88 3-(bromomethyl)-6-[(tert-butyl(dimethyl)silyl)oxy]-l, 2-benzisoxazole NBS (12.7 g, 71.5 mmoles) and benzyl peroxide (1.6 g, 6.5 mmoles) were added to a mixture of 3-methyl-6-[(tert-butyl(dimethyl)silyl)oxy]-l, 2-benzisoxazole (17.1 g, 65 mmoles) and CCI 4 (200 ml).
- EXAMPLE 93 3-cyclohexyl-l,2-benzisothiazol-6-ol
- a solution of boron tribromide IM in CH 2 CI 2 (11.9 ml, 11.9 mmoles) was slowly added to a solution of 6-benzyloxy-3-cyclohexyl-l,2-benzisothiazole (3.5 g, 10 mmoles) in CH 2 CI 2 (50 ml) at 0 0 C.
- the mixture was stirred at room temperature for 15 min and poured into water.
- the precipitate was filtered, dried and crystallised from EtOH to give pure 3-cyclohexyl-l,2-benzisothiazol-6-ol (940 mg, 40.3 %).
- RBA Relative binding affinities
- Receptors were incubated in Tris buffer (1OmM Tris, 2 mM DTT, 1 mg/BSA, 10 % Glycerol, pH 7.5 with HCI) at 4 0 C for 18-20 hours with 2 nM of [ 3 H]-E 2 with or without increasing concentrations of test compound from 1 nM to 10 ⁇ M.
- Non-specific binding was measured in the presence of a 500-fold excess of unlabeled E 2 . Separation of bound and free 3 H-E 2 fractions was achieved with dextran (0.25 %) coated charcoal (2.5 %) in Tris-EDTA buffer.
- the estrogenic and anti-estrogenic potentials of new compounds were evaluated using the induction of alkaline phosphatase (APase) activity, an estrogen specific response in human endometrial adenocarcinoma Ishikawa cells (Botella J., J Steroid Biochem Molec Biol, 1995, 55: 77-84; Littlefield et al., Endocrinology, 1990, 127: 2757-2762).
- Ishikawa cells were routinely grown as monolayers in Dulbecco's Modified Eagle's medium (DMEM) containing 4 mM Glutamax I and supplemented with 10 % of decomplemented fetal calf serum (dFCS) and antibiotics.
- DMEM Dulbecco's Modified Eagle's medium
- dFCS decomplemented fetal calf serum
- APase activity was assayed by a method involving the hydrolysis of p-nitrophenyl phosphate to p-nitrophenol at pH 9.8 and spectrophotometric determination of the product at 405 nm.
- the microplates were first rinsed twice with cold phosphate buffered solution and then placed at -80° C for at least 15 minutes. After thawing at room temperature for 5-10 minutes, the plates were put on ice and 50 ⁇ l ice-cold solution containing 5 mM p-nitrophenyl phosphate was added to each well. The plates were warmed to room temperature to allow for the development of the enzymatic reaction (to). After a 15 to 60 minute incubation period, the intensity of the yellow color generated by the production of p-nitrophenol was measured into each well at 405 nm using a microplate reader (Wallac, model 1420 Victor 2 ).
- APase activity reflected by absorbance, was first expressed as fold increase over control (FI) and then as percentage of E 2 activity (10 ⁇ 8 M) chosen equal to 100 %.
- FI fold increase over control
- E 2 activity 10 ⁇ 8 M
- the proliferative effect of the compounds of the invention was evaluated on human breast cancer cell line MCF-7 by measuring the number of viable cells after 6 days of treatment.
- MCF-7 cells were routinely cultured as monolayers in Dulbecco's modified Eagle's medium (DMEM) containing 4 mM Glutamax and 4.5 g/l glucose and supplemented with 5 % (v/v) decomplemented fetal calf serum (dFCS) and antibiotics.
- DMEM Dulbecco's modified Eagle's medium
- dFCS decomplemented fetal calf serum
- Cells were plated at 2.10 6 cells/75 cm 2 flasks and incubated at 37° C in a humidified atmosphere containing 5 % CO 2 . They were passaged once weekly to maintain continuous exponential growth. Forty eight hours before the start of an experiment, near-confluent cells were changed to a phenol red free DMEM containing 5 % steroid-stripped dFCS by dextran coated charcoal treatment (DCC-DMEM). On the day of the experiment, cells were harvested by brief exposure to trypsin and plated in DCC-DMEM in 96-well microplates at a density of 4.1O 3 cells/well.
- DCC-DMEM dextran coated charcoal treatment
- test compounds diluted appropriately in estrogen-free DMEM, were added and incubated for six days.
- the tested concentrations ranged from 10 12 M to ICT 5 M and the final vehicle concentration did not exceed 0.1 % (v/v).
- cell proliferation was evaluated by quantitation of the cellular ATP content which signals the presence of metabolically active cells. ATP assay
- the assay based on the ATP-dependent luciferase reaction, enables generation of a luminescent signal proportional to the amount of ATP present.
- the luminescent signal allowed to precisely evaluate cell proliferation (Crouch, S.P.M. et al. J. Immunol. Meth., 1993, 160, 81; Kangas, L. et al. Med. Biol. 1984, 62, 338; Petty, R.D. et al. J. Biolum. Chemilum. 1995, 10, 29).
- the microplates were inverted to discard the culture medium and 100 ⁇ l of fresh medium was added into each well.
- microplates were equilibrated at room temperature for approximately 30 minutes. 100 ⁇ l of luciferase reagent was added into each well and contents were mixed for 2 minutes to induce cell lysis. The plates were incubated at room temperature for 10 minutes to stabilize luminescence signal.
- Luminescence was recorded using a microplate reader (Wallac, model 1420 Victor 2 ) and results were expressed as percentage of the control luminescence. Sigmoidal dose-response curves were plotted and EC 50 values were calculated for each compound in order to evaluate their proliferative potency.
- ESTROGENIC ACTIVITY IN VIVO Prepubescent female rats were orally treated at 3 mg/rat/day for 3 days. On the day following the last treatment, uteri were removed and wet weights were recorded.
- the results are expressed as % of stimulation of uterus weight in comparison with vehicles.
- the compounds of examples 23, 31, 35, 66, 73, 84, 86 and 93 exhibited a marked selectivity for the human recombinant estrogen receptor ⁇ and a weak estrogenic effect in alkaline phosphatase activity in the Ishikawa cell model. These compounds were accordingly selected to check their in vitro estrogenicity.
- TAM tamoxifen
- DPN 2,3-bis-(4 -hydroxyphenyl)propionitrile
- PPT l,3,5-tris-(4-hydroxyphenyl) -4-propyl-lH-pyrazole
- E2 17 ⁇ -estradiol
- TAM 206 8 These results show that the compound of Example 23 is a potent ligand to estrogen receptor beta, with a weak in vivo estrogenic activity after oral administration.
- Prepubescent female rats were orally treated with 0.3; 1; 3 or 10 mg/rat/day for
- the compound of example 23 has been selected as a potential good candidate for treating estrogenic dependent diseases because of the lack of uterotrophicity up to a 3 mg/animal/day dosage, after oral administration.
- tail skin temperature of ovariectomized rats may serve as a useful tool for selection of compounds that are of potential use in the treatment of hot flushes in postmenopausal women.
- the aim of this study was to evaluate the effect of the compound of Example 23 over 4 days on tail skin temperature in ovariectomized rats. 17 ⁇ -estradiol, the standard reference, was administered by oral route at 1 mg/rat/day over 13 consecutive days (Watanabe N. et al, 2003).
- Rats were then ovariectomized and left undisturbed for at least 2 weeks. After this hormonal rest period, tail skin temperature was monitored during the same period and animals were randomized into 3 groups based on mean temperature. The first group was “ovariectomy control group”, the second group was “estradiol group” to confirm the estrogen activity on tail temperature and the third group was "Ex 23 group” to test the activity of this product on temperature. Body weights were then recorded on the first day of treatment and at the end of study.
- Results are expressed as % of stimulation of uterus weight in comparison with vehicles. 17 ⁇ -estradiol (E2) at 3 mg/rat/day is taken as the standard reference.
- the compound of example 23 decreased tail skin temperature of ovariectomized rat, without deleterious side-effects on uteri, unlike estradiol activity on body weight or uteri (as seen below).
- the ovariectomized rat is a mandatory model for preclinical evaluation of new compounds used for the prevention of bone loss (osteoporosis).
- Female Wistar - derived OFA strain rats from IFFA CREDO (France) were ovariectomized or sham operated as intact control. Upon arrival, they were housed in metal hanging cages in groups of 3 or 4 per cage and had ad libitum access to food and water for one week. After a one week acclimation period, daily dosing was carried out with the compound of interest or 17 ⁇ -estradiol.
- lipid parameter assay triglycerides, free cholesterol, total cholesterol, HDL, LDL, VLDL, apoliporotein A and BlOO; bone metabolism parameters such as: DPD, Ca 2+ , collagen type I and II C-telopeptide fragments; and urinary bone markers such as Ca 2+ , and inorganic phosphate. All assays were carried out following the manufacturer's recommendations. To allow bone mineral density measurement of individual lumbar segments, lumbar high resolution or whole body dual energy X-ray absorptiometry procedures were carried out during the study on isoflurane anesthetized animals.
- ER ⁇ KO mice model In addition, ER ⁇ localization in dorsal raphe nucleus area in rat has been described.
- the gold standard test for antidepressant potency of compound consist in the forced swimming test, in this experiment antidepressants could be distinguished from psychostimulants which decreased immobility at doses which increased general activity.
- the forced swimming test was performed according to the following design. The animals were housed six per cage under standard colony conditions, with a 12 h light/dark cycle and ad libitum food and water. They were allowed to acclimatize to the colony for at least 7 days prior to any experimentation.
- the compound of Example 23 was dissolved in olive oil and diluted to the desired concentration on the day of administration.
- intraperitoneal (i.p.) injection of desipramine was done.
- Desipramine was dissolved in double-distilled water (10 mg/kg).
- the experiments were conducted 30 min after the positive control drug treatment (only for desipramine treatment).
- Other compounds, ie: estradiol and the compound of Example 23 were daily injected subcutaneously in rats, during a 7 days period. Acquisition were performed on day 8 (24 h after the last administration of items) and day 9 (48h after estradiol or compound 23 administration), respectively. Data aquired 24 hours after the last administration consisted in the "naive animal group", these animals had never been previously tested in the device. Data aquired 48 hours after a last administration of compounds consisted in "trained animal group”.
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Abstract
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CA2582180A CA2582180C (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles, process for preparing them, pharmaceutical compositions and use as estrogenic agents |
AU2005293509A AU2005293509B2 (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
AT05794749T ATE512952T1 (en) | 2004-10-14 | 2005-10-14 | INDAZOLES, BENZISOXAZOLES AND BENZISOTHIAZOLES AND THEIR USE AS ESTROGENIC AGENTS |
JP2007536185A JP5047801B2 (en) | 2004-10-14 | 2005-10-14 | Indazole, benzisoxazole and benzisothiazole, their production method, pharmaceutical composition and use as estrogenic substance |
AP2007003960A AP2007003960A0 (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles andtheir use as estrogenic agents |
MX2007004372A MX2007004372A (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents. |
US11/664,887 US7977364B2 (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
BRPI0516851-1A BRPI0516851A (en) | 2004-10-14 | 2005-10-14 | indazoles, benzisoxazoles and benzisothiazoles and their uses as estrogenic agents |
NZ554279A NZ554279A (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
CN2005800430259A CN101080395B (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
EP05794749A EP1812404B1 (en) | 2004-10-14 | 2005-10-14 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
IL182047A IL182047A (en) | 2004-10-14 | 2007-03-20 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
TNP2007000138A TNSN07138A1 (en) | 2004-10-14 | 2007-04-13 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
NO20071922A NO20071922L (en) | 2004-10-14 | 2007-04-16 | Indazoles, benzisocazoles and benzinsothiazoles and their use as estrogenic agents |
US13/152,433 US8173679B2 (en) | 2004-10-14 | 2011-06-03 | Indazoles, benzisoxazoles and benzisothiazoles and their use as estrogenic agents |
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Cited By (5)
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JP2008174456A (en) * | 2007-01-16 | 2008-07-31 | Idemitsu Kosan Co Ltd | Adamanthylcarbonyl group-containing aromatic diol, its derivative and methods for producing these |
WO2008107455A1 (en) | 2007-03-07 | 2008-09-12 | Glaxo Group Limited | Indazoles used to treat estrogen receptor beta mediated disorders |
WO2009103710A1 (en) * | 2008-02-19 | 2009-08-27 | Glaxo Group Limited | Substituted 4-hydroxy-n- (4-hydroxyphenyl) indoles as estrogenic agents |
US10392368B2 (en) | 2017-08-01 | 2019-08-27 | Theravance Biopharma R&D Ip, Llc | Pyrazolo and triazolo bicyclic compounds as JAK kinase inhibitors |
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DE102015012050A1 (en) * | 2015-09-15 | 2017-03-16 | Merck Patent Gmbh | Compounds as ASIC inhibitors and their uses |
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CN110117278B (en) * | 2018-02-07 | 2022-07-19 | 石家庄以岭药业股份有限公司 | Alkoxybenzo five-membered (six-membered) heterocyclic amine compound and pharmaceutical application thereof |
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