Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
  • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
  • C07D413/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P13/00—Drugs for disorders of the urinary system
  • A61P13/08—Drugs for disorders of the urinary system of the prostate
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
  • A61P15/16—Masculine contraceptives
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
  • A61P15/18—Feminine contraceptives
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
  • A61P17/10—Anti-acne agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P5/00—Drugs for disorders of the endocrine system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P5/00—Drugs for disorders of the endocrine system
  • A61P5/24—Drugs for disorders of the endocrine system of the sex hormones
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P5/00—Drugs for disorders of the endocrine system
  • A61P5/24—Drugs for disorders of the endocrine system of the sex hormones
  • A61P5/26—Androgens
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
  • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
  • C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond

Definitions

• the present invention relates to progesterone receptor modulators.
• Intracellular receptors form a class of structurally related gene regulators known as "ligand dependent transcription factors".
• the steroid receptor family is a subset of the IR family, including progesterone receptor (PR), estrogen receptor (ER), androgen receptor (AR), glucocorticoid receptor (GR), and mineralocoiticoid receptor (MR).
• PR progesterone receptor
• ER estrogen receptor
• AR glucocorticoid receptor
• MR mineralocoiticoid receptor
• a compound that binds to an IR and mimics the action of the natural hormone is termed an agonist, whilst a compound that inhibits the effect of the hormone is an antagonist.
• the natural horaione, or ligand, for the PR is the steroid progesterone, but synthetic compounds, such as medroxyprogesterone acetate or levonorgestrel, have been made which also serve as ligands.
• a ligand Once a ligand is present in the fluid surrounding a cell, it passes through the membrane via passive diffusion, and binds to the IR to create a receptor/ligand complex. This complex binds to specific gene promoters present in the cell's DNA. Once bound to the DNA the complex modulates the production of mRNA and protein encoded by that gene.
• PR agonists naturally and synthetic are known to play an important role in the health of women.
• PR agonists are used in birth control formulations, typically in the presence of ER agonists, alternatively they may be used in conjunction with PR antagonists.
• ER agonists are used to treat the symptoms of menopause, but have been associated with a proliferative effect on the uterus that can lead to an increased risk of uterine cancers.
• Co-administration of a PR agonist reduces or ablates that risk.
• US Patent No. 6,407,101 which is hereby incorporated by reference, describes the preparation of cyclocarbamate derivatives, which are useful as progesterone receptor modulators.
• cyclocarbamate derivatives including, e.g., 5-(4,4-dimethyl-2-thioxo-l,4-dihydro-2H-benzoxazin-6-yl)-l-methyl-lH-2-cyano- pyrrole, are prepared by thionation of the corresponding benzoxazin-2-one (Scheme 1).
• the present invention provides a compound of formula I of the structure:
• the present invention provides the compounds 5-(4,4- dimethyl-2-thioxo- 1 ,4-dihydro-2H-3 , 1 -benzoxazin-6-yl)- 1 -methyl- 1 H-pyrrole-2- carbothioamide, 5-(4,4-dimethyl-2-oxo- 1 ,4-dihydro-2H-3 , 1 -benzoxazin-6-yl)- 1 - methyl- lH-pyrrole-2-carbothioamide, 5-(2'-thioxospiro[cyclohexane-l,3'-[3H]- indol]-5'-yl)-l -methyl- lH-pyrrole-2-carbothioa ⁇ nide, or a pharmaceutically acceptable salt thereof.
• the present invention provides pharmaceutical compositions containing compounds of the invention, or a pharmaceutically acceptable salt thereof, for use in contraception; hormone replacement therapy; treating or preventing hormone-dependent neoplastic disease; treating dysfunctional bleeding, uterine leiomyomata, endometriosis, or polycystic ovary syndrome; synchronizing estrus; treating acne; or treating hirsutism.
• the present invention provides use of compounds of the invention in preparing a medicament useful in contraception; hormone replacement therapy; treating or preventing hormone-dependent neoplastic disease; treating dysfunctional bleeding, uterine leiomyomata, endometriosis, or polycystic ovary syndrome; synchronizing estrus; treating acne; or treating hirsutism; in a mammal in need thereof.
• the present invention provides pharmaceutical kits or packs containing a course of treatment for contraception; hormone replacement therapy; treating or preventing hormone-dependent neoplastic disease; treating dysfunctional bleeding, uterine leiomyomata, endometriosis, or polycystic ovary syndrome; synchronizing estrus; treating acne; or treating hirsutism, comprising a container having a compound or composition of the invention in unit dosage form.
• the present invention provides methods for preparing compounds of the invention. Other aspects and advantages of the present invention are described further in the following detailed description of the preferred embodiments thereof.
• the present invention provides novel progesterone receptor modulators, including thioamide compounds, and methods for preparing the same.
• the thioamide compounds of the invention are useful for a variety of purposes including use as progesterone receptor modulators, and specifically for contraception; hormone replacement therapy; treating or preventing hormone-dependent neoplastic disease; treating dysfunctional bleeding, uterine leiomyomata, endometriosis, or polycystic ovary syndrome; synchronizing estrus; treating acne; or treating hirsutism by administering the compounds of the invention to a mammal in need thereof.
• alkyl is used herein to refer to both straight- and branched-chain saturated aliphatic hydrocarbon groups having 1 to about 10 carbon atoms, or 1 to about 8 carbon atoms.
• alkenyl is used herein to refer to both straight- and branched-chain alkyl groups having one or more carbon-carbon double bonds and containing about 2 to about 10 carbon atoms. In one embodiment, the term alkenyl refers to an alkyl group having 1 or 2 carbon-carbon double bonds and having 2 to about 6 carbon atoms.
• alkynyl is used herein to refer to both straight- and branched-chain alkyl groups having one or more carbon-carbon triple bond and having 2 to about 8 carbon atoms.
• alkynyl refers to an alkyl group having 1 or 2 carbon-carbon triple bonds and having 2 to about 6 carbon atoms.
• cycloalkyl is used herein to refer to an alkyl group as previously described that is cyclic in structure and has about 4 to about 10 carbon atoms, or about 5 to about 8 carbon atoms.
• substituted alkyl refers to alkyl, alkenyl, alkynyl, and cycloalkyl groups, respectively, having one or more substituents including, without limitation, halogen, CN, OH, NO 2 , amino, aryl, heterocyclic, alkoxy, aryloxy, alkylcarbonyl, alkylcarboxy, and arylthio which groups can be optionally substituted.
• substituents can be attached to any carbon of an alkyl, alkenyl, or alkynyl group provided that the attachment constitutes a stable chemical moiety.
• aryl refers to an aromatic system which can include a single ring or multiple aromatic rings fused or linked together where at least one part of the fused or linked rings forms the conjugated aromatic system.
• the aryl groups can include, but are not limited to, phenyl, naphthyl, bip enyl, anthryl, tetrahydronaphthyl, phenanthryl, indene, benzonaphthyl, fluorenyl, and carbazolyl.
• substituted aryl refers to an aryl group which is substituted with one or more substituents including halogen, CN, OH, N0 2 , amino, alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, aryloxy, alkyloxy, alkylcarbonyl, alkylcarboxy, aminoalkyl, and arylthio, which groups can be optionally substituted.
• a substituted aryl group is substituted with 1 to about 4 substituents.
• heterocyclic refers to a stable 4- to 7-membered monocyclic or multicyclic heterocyclic ring which is saturated, partially unsaturated, or wholly unsaturated.
• the heterocyclic ring has carbon atoms and one or more heteroatoms including nitrogen, oxygen, and sulfur atoms.
• the heterocyclic ring has 1 to about 4 heteroatoms in the backbone of the ring.
• the nitrogen or sulfur atoms can be oxidized.
• heterocyclic also refers to multicyclic rings in which a heterocyclic ring is fused to an aryl ring.
• the heterocyclic ring can be attached to the aryl ring through a heteroatom or carbon atom provided the resultant heterocyclic ring structure is chemically stable.
• a variety of heterocyclic groups are known in the art and include, without limitation, oxygen-containing rings, nitrogen-containing rings, sulfur-containing rings, mixed heteroatom-containing rings, fused heteroatom containing rings, and combinations thereof.
• Oxygen-containing rings include, but are not limited to, furyl, tetrahydrofuranyl, pyranyl, pyronyl, and dioxinyl rings.
• Nitrogen-containing rings include, without limitation, pyrrolyl, pyrazolyl, imidazolyl, triazolyl, pyridyl, piperidinyl, 2-oxopi ⁇ eridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, piperazinyl, azepinyl, triazinyl, pyrrolidinyl, and azepinyl rings.
• Sulfur-containing rings include, without limitation, thienyl and dithiolyl rings.
• Mixed heteroatom containing rings include, but are not limited to, oxathiolyl, oxazolyl, thiazolyl, oxadiazolyl, oxatriazolyl, dioxazolyl, oxathiazolyl, oxathiolyl, oxazinyl, oxathiazinyl, morpholinyL thiamorpholinyl, thiamorpholinyl sulfoxide, oxepinyl, thiepinyl, and diazepinyl rings.
• Fused heteroatom-containing rings include, but are not limited to, benzofuranyl, thionapthene, indolyl, benazazolyl, purindinyl, pyranopyrrolyl, isoindazolyl, indoxazinyl, benzoxazolyl, anthranilyl, benzopyranyl, quinolinyl, isoquinolinyl, benzodiazonyl, napthylridinyl, benzothienyl, pyridopyridinyl, benzoxazinyl, xanthenyl, acridinyl, and purinyl rings.
• substituted heterocyclic refers to a heterocyclic group having one or more substituents including halogen, CN, OH, N0 2 , amino, alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, aryloxy, alkyloxy, alkylcarbonyl, alkylcarboxy, aminoalkyl, and arylthio, which groups can be optionally substituted.
• a substituted heterocyclic group is substituted with 1 to about 4 substituents.
• alkoxy refers to the O(alkyl) group, where the point of attachment is through the oxygen-atom and the alkyl group is optionally substituted.
• aryloxy refers to the O(aryl) group, where the point of attachment is through the oxygen-atom and the aryl group is optionally substituted.
• alkyloxy includes hydroxyalkyl and as used herein refers to the alkylOH group, where the point of attachment is through the alkyl group.
• arylthio refers to the S(aryl) group, where the point of attachment is through the sulfur-atom and the aryl group can be optionally substituted.
• alkylcarbonyl refers to the C(0)(alkyl) group, where the point of attachment is through the carbon-atom of the carbonyl moiety and the alkyl group is optionally substituted.
• alkylcarboxy refers to the C(0)0(alkyl) group, where the point of attachment is through the carbon-atom of the carboxy moiety and the alkyl group is optionally substituted.
• aminoalkyl includes alkylamino and as used herein refers to both secondary and tertiary amines where the point of attachment is through the nitrogen- atom and the alkyl groups are optionally substituted.
• the alkyl groups can be the same or different.
• thioalkoxy or “thioalkyl” as used herein refers to the S(alkyl), where the point of attachment is through the sulfur-atom and the alkyl group is optionally substituted.
• halogen refers to CI, Br, F, or I groups.
• acne is meant to include any skin disorder where a skin pore becomes blocked and/or thereby becomes inflamed.
• acne includes without limitation superficial acne, including comedones, inflamed papules, superficial cysts, and pustules; and deep acne, including deep inflamed modules and pus-filled cysts.
• Specific acne conditions can include, but are not limited to, acne vulgaris, acne comedo, papular acne, premenstrual acne, preadolescent acne, acne venenata, acne cosmetica, pomade acne, acne detergicans, acne excoriee, gram negative acne, acne rosacea, pseudofolliculitis barbae, folliculitis, perioral dermatitis, and hiddradenitis suppurativa.
• the term "hirsutism” is meant to describe a skin disorder where an overgrowth of hair growth is observed in areas of the body which are not normally subject to excessive hair growth.
• SERM selective estrogen receptor modulator
• SERMs can act as estrogen receptor agonists in some tissues and as antagonists in other tissue types.
• SERMs can also be interchanged with the term "anti-estrogen”.
• R 1 and R 2 can be, independently, H, Ci to C 6 alkyl, or substituted Ci to C 6 alkyl.
• R 1 and R 2 can also be fused to fonn a ring including -CH 2 (CH 2 ) n CH 2 -, -CH 2 CH 2 C(CH 3 ) 2 CH 2 CH 2 -, -O(CH 2 ) p CH 2 -, -O(CH 2 ) q O-, -CH 2 CH 2 OCH 2 CH 2 -, or -CH 2 CH 2 NR 6 CH 2 CH 2 -, where n is 1 to 5; p is 1 to 4; and q is 1 to 4.
• R 3 can be H, OH, NH 2 , CN, halogen, Ci to C 6 alkyl, substituted Ci to C 6 alkyl, C 2 to C 6 alkenyl, substituted C 2 to C 6 alkenyl, C 2 to C 6 alkynyl, substituted C 2 to C 6 alkynyl, or COR A .
• R A can be H, Ci to C 6 alkyl, substituted Ci to C 6 alkyl, C ⁇ to C 6 alkoxy, substituted to C ⁇ alkoxy, C] to C ⁇ aminoalkyl, or substituted d to C 6 aminoalkyl.
• R 4 can be H, Ci to C ⁇ alkyl, substituted Ci to C 6 alkyl, Ci to C 6 alkoxy, substituted Ci to C 6 alkoxy, Ci to C ⁇ aminoalkyl, or substituted C . to C 6 aminoalkyl.
• R 5 can be Ci to C 6 alkyl, substituted Ci to C 6 alkyl, or COR A .
• R 6 can be H or Ci to C 6 alkyl.
• X can be O, S, or absent.
• Q can be O or S.
• the present invention also provides for compounds of formula I, where R and R 2 are Ci to C 6 alkyl, R 3 is H, R 4 is H, and R 5 is Ci to C 6 alkyl.
• the present invention provides for compounds of the following fo ⁇ nulae, where R ] -R 3 and R 5 are defined as described above,
• the present invention provides the following compounds:
• R 1 and R 2 are CH 3 , or R 1 and R 2 are fused to form a ring comprising -CH 2 (CH 2 ) n CH 2 -.
• An example of n is 3.
• An example of R 3 is H.
• R 4 may be for example H.
• An example of R 5 is CH .
• Q may be O in some embodiments or Q is S in other embodiments.
• An example of X is O. In other embodiments X is absent.
• the pyrrole ring may be for example 2,5-disubstituted.
• the thioamides of the present invention can be prepared by reacting a compound containing a CN moiety with a sulfur-containing agent in the presence of a base.
• the compounds containing the CN moieties can have substituents other than CN moieties. Examples of compounds containing CN moieties and other optional substituents include compounds of formula II, wherein R'-R 5 . Q. and X are defined as described above.
• the compound containing the CN moiety contains a pyrrole group containing one or more CN substituents attached to the pyrrole ring.
• the CN moiety is attached at the 2-position, 3- position, or 4-position of the pyrrole ring.
• the CN moiety is attached at the 2-position of the ring.
• the location and number of CN moieties is not a limitation of the present invention.
• the thioamides of the present invention can be prepared by reacting the cyanopyrrole compound with a sulfur-containing agent, in the presence of a solvent and a base, optionally in the presence of heat, (based on procedure by R. Shabana, H. J. Meyer, S.-O. Lawesson Phosphorus and Sulfur 1985, 25, 297).
• the solvent can include any reagent that does not react with the components of the reaction mixture and includes ethers.
• the solvent is 1,2- dimethoxyethane (DME), tetrahydrofuran (THF) or diethylether.
• the solvent is DME.
• the solvent can also include other agents that do not interfere with the reaction and includes, without limitation, water or alcohols.
• the sulfur-containing agent must be capable of reacting with the nitrile moiety of the pyrrole group and includes, without limitation, a dialkyldithiophosphate, a diaryldithiophosphate, hydrogen sulfide (H 2 S), 2,4-bis(4-methoxy ⁇ henyl)-l,3-dithia- 2,4-diphosphetane-2,4-disulfide (Lawesson's reagent), or phosphorus pentasulfide.
• the sulfur-containing agent is a dialkyldithiophosphate or diaryldithiophosphate.
• the sulfur-containing agent is diethyldithiophosphate.
• a 1:1 ratio of sulfur-containing agent to the compound of formula II in the range of 1 : 1 to 3 : 1 is utilized.
• One of skill in the art would readily be able to determine the amount of sulfur-containing agent to utilize depending on the reaction conditions, reagents, and purification required. For example a ratio of about 1:1, about 1.5:1, about 2: 1 ratio, about 2.5 : 1 , or about 3 : 1 can be used.
• the base utilized according to the present invention can be an amine.
• the amine is an alkylated amine including N,N-diisopropylethylamine (H ⁇ nig's base), triethylamine, and pyridine, among others.
• the thioamides of the present invention can be formed by the addition of hydrogen sulfide (H 2 S) or Lawesson's reagent derivatives to the nitrile moiety of the cyanopyrrole group.
• H 2 S can result from the hydrolysis of Lawesson's reagent or phosphorus pentasulfide by water.
• the H 2 S can also be formed by reaction of any alcohol, including methanol (MeOH) or isopropanol (iPrOH) that is present in the solvent, with Lawesson's reagent to give O-esters of phosphonodithioic acid and H 2 S.
• the compounds of formula I can be purified using techniques known to those of skill in the art and include, without limitation, extraction, recrystallization, chromatography, precipitation, and distillation.
• the compound of formula I is purified by dissolving the compound of formula I in a dissolving solvent to form a solution.
• the dissolving solvent can include any solvent that dissolves the compound of formula I with or without heating the same.
• the selection of the dissolving solvent can be readily determined by one of skill in the art.
• the dissolving solvent is acetone, 2-butanone, tetrahydrofuran, or DME.
• the solvent is acetone, or acetone heated to its boiling point.
• the dissolving solvent containing the compound of formula I can then be concentrated by distillation or vacuum.
• the dissolving solvent containing the compound of formula I is concentrated by distillation. Thereafter, purified compound of formula I is isolated by precipitation, optionally by cooling the concentrated dissolving solvent.
• the present invention provides a method for preparing a compound of formula I of the structure: I wherein, R 1 and R 2 can be, independently, H, Ci to C 6 alkyl, or substituted to C ⁇ alkyl. R 1 and R 2 can also be fused to form a ring including -CH 2 (CH 2 ) n CH 2 -, -CH 2 CH 2 C(CH 3 ) 2 CH 2 CH 2 -, -0(CH 2 ) p CH 2 -, -0(CH 2 ) q O-, -CH 2 CH 2 OCH 2 CH 2 -, or -CH 2 CH 2 NR 6 CH 2 CH 2 -, where n is 1 to 5; p is 1 to 4; and q is 1 to 4.
• R 3 can be H, OH, NH 2 , CN, halogen, Ci to C 6 alkyl, substituted C ⁇ to C 6 alkyl, C 2 to C 6 alkenyl, substituted C 2 to C 6 alkenyl, C 2 to C 6 alkynyl, substituted C 2 to C 6 alkynyl, or COR A .
• R A can be H, Ci to C 6 alkyl, substituted Ci to C 6 alkyl, Ci to C 6 alkoxy, substituted Ci to C 6 alkoxy, Ci to C ⁇ aminoalkyl, or substituted Ci to C 6 aminoalkyl.
• R 4 can be H, Ci to C ⁇ alkyl, substituted to C 6 alkyl, Ci to C 6 alkoxy, substituted Ci to C 6 alkoxy, Ci to C 6 aminoalkyl, or substituted Ci to C 6 aminoalkyl.
• R 5 can be Ci to C 6 alkyl, substituted Ci to C 6 alkyl, or COR A .
• R 6 can be H or d to C 6 alkyl.
• X can be O, S, or absent.
• Q can be O or S, or a pharmaceutically acceptable salt thereof, by combining a base, a dialkyldithiophosphate, and a compound of formula II of the structure, or a pharmaceutically acceptable salt thereof, where R ! -R 5 , Q, and X are defined above. See, Scheme 2.
• the method can further include purifying the compound of formula I including dissolving the compound of formula I in acetone to form a solution; heating the acetone solution to the boiling point of acetone; concentrating the acetone solution by distillation; and isolating the purified compound of formula I.
• the present invention provides a method for preparing 6-(2-carbomioamide-pyrrole)-benzoxazme compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound, a base, and a sulfur-containing agent.
• the present invention provides a method for preparing 6-(2-carbomioamide-pyrrole)-benzoxazme compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound, a base, and a sulfur-containing agent.
• the present invention provides a method for preparing
• 6-(2-carbothioamide-pyrrole)-benzoxazine compounds or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound, a base, and a dialkyldithiophosphate.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazine compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound, a base, and hydrogen sulfide.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazine compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound, a base, and diethyldithiophosphate.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazine compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound, Hiinig's base, and diethyldithiophosphate.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazin-2-one compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)- benzoxazin-2-one compound, a base, and a dialkyldithiophosphate.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazin-2-thione compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)- benzoxazin-2-thione compound, a base, and a dialkyldithiophosphate.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazine compounds, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound and hydrogen sulf ⁇ de.
• the present invention provides a method for preparing 6-(2-carbothioamide-pyrrole)-benzoxazine compound, or pharmaceutically acceptable salts thereof, including reacting a 6-(2-cyanopyrrole)-benzoxazine compound and diethyldithiophosphate.
• the thioamide compounds of this invention are useful as progesterone receptor modulators, including antagonists and agonists.
• the compounds of this invention can act as competitive inhibitors of progesterone binding to the PR and therefore act as agonists in functional models, either/or in-vitro and in-vivo.
• the compounds utilized according to the present invention can contain one or more asymmetric centers and can thus give rise to optical isomers and diastereomers. While shown without respect to stereochemistry, the compounds can include optical isomers and diastereomers; racemic and resolved enantiomerically pure R and S stereoisomers; other mixtures of the R and S stereoisomers; and pharmaceutically acceptable salts thereof.
• the compounds are therefore useful as oral contraceptives in both males and female.
• the compounds are also useful in hormone replacement therapy, and in preparing medicaments useful therefor.
• the compounds are further useful in the treatment of endometriosis, luteal phase defects, hormone-dependent neoplastic disease, and benign breast and prostatic diseases, and in preparing medicaments useful therefor.
• the hormone-dependent neoplastic disease can include uterine myometrial fibroids, endometriosis, benign prostatic hypertrophy, carcinomas and adenocarcinomas of the endometrium, ovary, breast, colon, prostate, pituitary, uterine, and meningioma.
• the compounds are also useful in treating hirsutism or acne, and in preparing medicaments useful therefor.
• the compounds are further useful in the synchronization of estrus, and in preparing medicaments useful therefor.
• the compounds of this invention can be used alone as a sole therapeutic agent or can be used in combination with other agents, such as estrogens such as those described in US Patent Publication Nos. US-2004-0006122-A1 and US-2004- 0014798-A1, which are hereby incorporated by reference, progestins, estrones, androgens, estrogen receptor agonist, or selective estrogen receptor modulators such as those described in US Patent Publication Nos. US-2004-0002535-A1 and US- 2004-0006060-A1, which are hereby incorporated by reference.
• the compounds of the present invention encompass tautomeric forms of the structures provided herein characterized by the bioactivity of the drawn structures.
• the compounds of the present invention can be used in the form of pharmaceutically acceptable salts derived from pharmaceutically or physiologically acceptable acids, bases, alkali metals and alkaline earth metals.
• Physiologically acceptable acids include those derived from inorganic and organic acids.
• inorganic acids include hydrochloric, hydrobromic, hydroiodic, sulfuric, nitric, and phosphoric acids, among others.
• organic acids include, without limitation, lactic, formic, acetic, fumaric, citric, propionic, oxalic, succinic, glycolic, glucuronic, maleic, furoic, glutamic, benzoic, anthranilic, salicylic, tartaric, malonic, mallic, phenylacetic, mandelic, embonic, methanesulfonic, ethanesulfonic, panthenoic, benzenesulfonic, toluenesulfonic, stearic, sulfanilic, alginic, and galacturonic acids, among others.
• Physiologically acceptable bases include those derived from inorganic and organic bases.
• inorganic bases include aluminum, calcium, lithium, magnesium, potassium, sodium, and zinc sulfate or phosphate compounds, among others.
• organic bases include, without limitation, N,N,-dibenzylethylenediamine, chloroprocaine, choline, diethanolarnine, ethylenediamine, meglumine, and procaine, among others.
• Physiologically acceptable alkali salts and alkaline earth metal salts can include, without limitation, sodium, potassium, calcium and magnesium salts in the form of esters, and carbamates.
• prodrug forms can also be utilized which, when delivered in such form, convert to the active moiety in vivo.
• These salts, as well as other compounds of the invention can be in the form of esters, carbamates and other conventional "pro-drug” forms, which, when administered in such form, convert to the active moiety in vivo.
• the prodrugs are esters. See, e.g., B. Testa and J. Caldwell, "Prodrugs Revisited: The "Ad Hoc” Approach as a Complement to Ligand Design", Medicinal Research Reviews, 16(3):233-241, ed., John Wiley & Sons (1996).
• the compounds discussed herein also encompass "metabolites" which are unique products formed by processing the compounds of the invention by the cell or patient In one embodiment, metabolites are formed in vivo.
• the compounds of this invention can be formulated neat or with a pharmaceutical carrier for administration, the proportion of which is determined by the solubility and chemical nature of the compound, chosen route of administration and standard pharmacological practice.
• the pharmaceutical carrier may be solid or liquid.
• a solid carrier can include one or more substances which may also act as flavoring agents, lubricants, solubilizers, suspending agents, fillers, glidants, compression aids, binders or tablet-disintegrating agents; it can also be an encapsulating material.
• the carrier is a finely divided solid which is in admixture with the finely divided active ingredient.
• the active ingredient is mixed with a carrier having the necessary compression properties in suitable proportions and compacted in the shape and size desired.
• the powders and tablets may contain up to 99% of the active ingredient.
• Suitable solid carriers include, for example, calcium phosphate, magnesium stearate, talc, sugars, lactose, dextrin, starch, gelatin, cellulose, methyl cellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidine, low melting waxes and ion exchange resins. Liquid carriers are used in preparing solutions, suspensions, emulsions, syrups, elixirs and pressurized compositions.
• the active ingredient can be dissolved or suspended in a pharmaceutically acceptable liquid carrier such as water, an organic solvent, a mixture of both or pharmaceutically acceptable oils or fats.
• a pharmaceutically acceptable liquid carrier such as water, an organic solvent, a mixture of both or pharmaceutically acceptable oils or fats.
• the liquid carrier can contain other suitable pharmaceutical additives such as solubilizers, emulsifiers, buffers, preservatives, sweeteners, flavoring agents, suspending agents, thickening agents, colors, viscosity regulators, stabilizers or osmo-regulators.
• liquid carriers for oral and parenteral administration include water (partially containing additives as above, e.g., cellulose derivatives, such as sodium carboxymethyl cellulose solution), alcohols (including monohydric alcohols and polyhydric alcohols, e.g., glycols) and their derivatives, lethicins, and oils (e.g., fractionated coconut oil and arachis oil).
• the carrier can also be an oily ester such as ethyl oleate and isopropyl myristate.
• Sterile liquid carriers are useful in sterile liquid form compositions for parenteral administration.
• the liquid carrier for pressurized compositions can be halogenated hydrocarbon or other pharmaceutically acceptable propellant.
• the compounds of the invention can be delivered by a route such as oral, dermal, transdermal, intrabronchial, intranasal. intravenous, intramuscular, subcutaneous, parenteral, intraperitoneal, intranasal, vaginal, rectal, sublingual, intracranial, epidural, intratracheal, or by sustained release.
• delivery is oral or transdermal.
• the compositions are delivered orally by tablet, capsule, microcapsules, dispersible powder, granule, suspension, syrup, elixir, and aerosol.
• delivery is by tablets and hard- or liquid-filled capsules.
• compositions are delivered intravenously, intramuscularly, subcutaneously, parenterally and intraperitoneally in the form of sterile injectable solutions, suspensions, dispersions, and powders which are fluid to the extent that easy syringe ability exists.
• injectable compositions are sterile, stable under conditions of manufacture and storage, and free of the contaminating action of microorganisms such as bacteria and fungi.
• Injectable formations can be prepared by combining the compositions with a liquid.
• the liquid can be selected from among water, glycerol, ethanol, propylene glycol and polyethylene glycol, oils, and mixtures thereof.
• the liquid carrier is water.
• the oil is vegetable oil.
• the liquid carrier contains about a suspending agent.
• the liquid carrier is an isotonic medium and contains about 0.05 to about 5% suspending agent.
• the compositions are delivered rectally in the form of a conventional suppository.
• the compositions are delivered vaginally in the form of a conventional suppository, cream, gel, ring, or coated intrauterine device (IUD).
• IUD intrauterine device
• the compositions are delivered mtranasally or intrabronchially in the form of an aerosol.
• compositions are delivered transdermally or by sustained release through the use of a transdermal patch containing the composition and an optional carrier that is inert to the compound(s), is nontoxic to the skin, and allows for delivery of the compound(s) for systemic absorption into the blood stream.
• a carrier can be a cream, ointment, paste, gel, or occlusive device.
• the creams and ointments can be viscous liquid or semisolid emulsions.
• Pastes can include absorptive powders dispersed in petroleum or hydrophilic petroleum.
• sustained delivery devices can be utilized to release the active reagents into the blood stream and include semi-permeable membranes covering a reservoir contain the active reagents, or a matrix containing the reactive reagents.
• the use of sustained delivery devices can be desirable, in order to avoid the necessity for the patient to take medications on a daily basis.
• sustained delivery is used herein to refer to delaying the release of an active agent, i.e., compositions of the invention, until after placement in a delivery environment, followed by a sustained release of the agent at a later time.
• a number of sustained delivery devices are known in the art and include hydrogels (US Patent Nos.
• compositions of the invention can be formulated as described herein.
• those of formula I may be useful at the lower end of the dosage ranges provided herein.
• the dosage regimen may however be adjusted to provide the optimal therapeutic response. For example, several divided doses (e.g., in divided doses 2 to 4 times a day) may be administered daily or the dose may be proportionally reduced as indicated by the exigencies of the therapeutic situation. Alternatively, a single dose can be delivered. In one embodiment, the delivery can be on a daily, weekly, or monthly basis. In another embodiment, delivery is daily. Daily dosages can be lowered or raised based on the periodic delivery. Precise dosages for oral, parenteral, nasal, or intrabronchial administration can be determined by the administering physician based on experience with the individual subject treated.
• the pharmaceutical composition is in unit dosage form, e.g., as tablets or capsules.
• the composition is sub-divided in unit dose containing appropriate quantities of the active ingredient;
• the unit dosage forms can be packaged compositions, for example, packaged powders, vials, ampoules, pre filled syringes or sachets containing liquids.
• the unit dosage form can be, for example, a capsule or tablet itself, or it can be the appropriate number of any such compositions in package form.
• V. Pharmaceutical Kits The present invention provides kits or packages of pharmaceutical formulations including the compounds of formula I described herein. When the compounds of formula I are to be delivered continuously, a package or kit can include the compound in each tablet.
• kits can include placebos on those days when the compound is not delivered.
• the kits can also be organized to indicate a single oral formulation or combination of oral formulations to be taken on each day of the cycle, in one embodiment including oral tablets to be taken on each of the days specified, and in another embodiment one oral tablet will contain each of the combined daily dosages indicated.
• other kits of the type described above may be prepared in which a compound of formula I is delivered.
• the daily dosage of the compound of formula I remains fixed in each particular phase in which it is delivered.
• the daily dose units described are to be delivered in the order described, with the first phase followed in order by the second and third phases.
• kits contain the placebo described for the final days of the cycle.
• the kits can also include an agent such as one or more of an agent selected from among estrogen, progestin, estrone, androgen, estrogen receptor agonist, or selective estrogen receptor modulator.
• an agent such as one or more of an agent selected from among estrogen, progestin, estrone, androgen, estrogen receptor agonist, or selective estrogen receptor modulator.
• One of skill in the art would readily be able to formulate a suitable amount of the above-noted agent for use in the kits of the invention.
• a number of packages or kits are known in the art for the use in dispensing pha ⁇ naceutical agents for oral use.
• the package has indicators for each day.
• the package is a labeled blister package, dial dispenser package, or bottle.
• LC-MS 331 (M + ); impurity 297 (NSP-989). Mp: particles of various shapes; small particles melted 210-215 °C; next 218-220 °C; final melt 223-226 °C.
• IR KBr, cm “1 ): 3375, 3269, 3165, 2211, 1624, 1610, 1540, 1526, 1466, 1370, 1294, 1261, 1186, 1114, 1086, 959, 880, 822, 779.
• EXAMPLE 4 PHARMACOLOGY 5 -(4,4-dimethyl-2-thioxo- 1 ,4-dihydro-2H-3 , 1 -benzoxazin-6-yl)- 1 -methyl- 1 H- pyrrole-2-carbothioamide (1) and 5-(4,4-dimethyl-2-oxo ⁇ l,4-dihydro-2H-3,l- benzoxazin-6-yl)-l -methyl- lH-pyrrole-2-carbothioamide (2) were tested in a T47D cytosol alkaline phosphatase assay (Table 1). The purpose of this functional assay was to identify progestins or antiprogestins by determining the compound's effect on alkaline phosphatase activity in T47D cells.

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