Claims for Patent: 9,549,929

Summary for Patent: 9,549,929

Title:	Pyrrolo[2,3-D]pyrimidine derivatives
Abstract:	Described herein are pyrrolo{2,3-d}pyrimidine derivatives, their use as Janus Kinase (JAK) inhibitors, and pharmaceutical compositions containing them.
Inventor(s):	Matthew Frank Brown, Ashley Edward Fenwick, Mark Edward Flanagan, Andrea Gonzales, Timothy Allan Johnson, Neelu Kaila, Mark J. Mitton-Fry, Joseph Walter Strohbach, Ruth E. TenBrink, John David Trzupek, Rayomand Jal Unwalla, Michael L. Vazquez, Mihir D. Parikh
Assignee:	Pfizer Corp SRL
Application Number:	US14/715,046
Patent Claims:	1. A method for treating a disorder or condition selected from rheumatoid arthritis, lupus, psoriasis, atopic dermatitis, and inflammatory bowel disease, comprising the step of administering to a subject an effective amount of a composition comprising a compound of formula I having the structure: or a pharmaceutically acceptable salt thereof, wherein R1 is hydrogen or C1-C4 alkyl, wherein said alkyl is further optionally substituted with one or more substituents selected from the group consisting of halo, hydroxy, methoxy, amino, CF3, and C3-C6 cycloalkyl; X is selected from —NH— and —CRaRb—, where (a) Ra and Rb are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, (aryl)C1-C6 linear or branched chain alkyl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, (heteroaryl)C1-C6 linear or branched chain alkyl, (heterocyclic)C1-C6 linear or branched chain alkyl, or (b) Ra and Rb together form a chain comprising —(CRcRd)j—, where Rc and Rd are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, halo, CN, CF3, hydroxyl, CONH2, or SO2CH3; Y is -A-R5, where A is a bond, —(CH2)k— or —(CD2)k- and R5 is C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, or —NRa′Rb′, or is an unsaturated, saturated or partially saturated monocyclic or bicyclic ring structure containing a total of four to eleven atoms having one to three heteroatoms independently selected from the group consisting of oxygen, nitrogen, and sulfur, wherein said alkyl, C3-C6 cycloalkyl, aryl, or monocyclic or bicyclic ring structure is further optionally substituted with one or more substituents selected from the group consisting of deuterium, halo, C1-C6 linear or branched chain alkyl, CN, hydroxyl, CF3, —ORe, —NReRf, —S(O)pRe and C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CONH2, and SO2CH3, where (a) Ra′ and Rb′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, or (C1-C6 linear or branched chain alkyl)heteroaryl, where said alkyl and cycloalkyl may be optionally substituted with one or more Rc′, or (b) Ra′ and Rb′ together form a chain comprising —(CRc′Rd′)j—, where Rc′ and Rd′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, halo, CN, hydroxyl, CF3, CONH2, —ORe, —NReRf, or —S(O)pRe −; where Re and Rf are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, or C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CF3, and CONH2; j is 2, 3, 4 or 5; k is 1, 2; 3, or 4; p is 0, 1 or 2; and, n is 1 or 2. 2. The method of claim 1 wherein the compound is a compound of formula IA having the structure: or a pharmaceutically acceptable salt thereof, wherein Y is -A-R5, where A is a bond, —(CH2)k— or —(CD2)k- and R5 is C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, or —NRa′Rb′, or is an unsaturated, saturated or partially saturated monocyclic or bicyclic ring structure containing a total of five to eleven atoms having one to three heteroatoms independently selected from the group consisting of oxygen, nitrogen, and sulfur, wherein said alkyl, C3-C6 cycloalkyl, aryl, or monocyclic or bicyclic ring structure is further optionally substituted with one or more substituents selected from the group consisting of deuterium, halo, C1-C6 linear or branched chain alkyl, CN, hydroxyl, CF3, —ORe, —NReRf, —S(O)pRe and C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CONH2, and SO2CH3, where (a) Ra′ and Rb′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, or (C1-C6 linear or branched chain alkyl)heteroaryl, where said alkyl and cycloalkyl may be optionally substituted with one or more Rc′, or (b) Ra′ and Rb′ together form a chain comprising —(CRc′Rd′)j—, where Rc′ and Rd′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, halo, CN, hydroxyl, CF3, CONH2, —ORe, —NReRf, or —S(O)pRe; where Re and Rf are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, or C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CF3, and CONH2; j is 2, 3, 4 or 5; k is 1, 2; 3, or 4; and, p is 0, 1 or 2. 3. The method of claim 2 wherein A is a bond and R5 is a C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl or aryl. 4. The method of claim 2 wherein A is a bond or —(CH2)k—, and R5 is C3-C6 cycloalkyl wherein said C3-C6 cycloalkyl is further optionally substituted with one or more substituents selected from the group consisting of halo, C1-C6 linear or branched chain alkyl, and CN where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CONH2, and SO2CH3; where k is 1, 2, or 3. 5. The method of claim 2 wherein A is a bond or —(CH2)k—, and R5 is an unsaturated, saturated or partially saturated monocyclic or bicyclic ring structure containing a total of five to eleven atoms having one to three heteroatoms independently selected from the group consisting of oxygen, nitrogen, and sulfur, wherein said alkyl, C3-C6 cycloalkyl, aryl, or monocyclic or bicyclic ring structure is further optionally substituted with one or more substituents selected from the group consisting of deuterium, halo, C1-C6 linear or branched chain alkyl, CN, hydroxyl, CF3, —S(O)pRe and C3-C6 cycloalkyl; where k is 1, 2, or 3. 6. The method of claim 1 wherein the compound is a compound of formula IB having the structure: or a pharmaceutically acceptable salt thereof, wherein (a) Ra′ and Rb′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, or (C1-C6 linear or branched chain alkyl)heteroaryl, where said alkyl and cycloalkyl may be optionally substituted with one or more Rc; (b) Ra′ and Rb′ together form a chain comprising —(CRc′Rd′)j—, where Rc′ and Rd′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, halo, CN, hydroxyl, CF3, CONH2, —ORe, —NReRf, or —S(O)pRe; where Re and Rf are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, or C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CF3, and CONH2; or, (c) Ra′ and Rb′ together form an unsaturated, saturated or partially saturated monocyclic or bicyclic ring structure containing a total of five to eleven atoms having one to three heteroatoms independently selected from the group consisting of oxygen, nitrogen, and sulfur, wherein said monocyclic or bicyclic ring structure is further optionally substituted with one or more substituents selected from the group consisting of deuterium, halo, C1-C6 linear or branched chain alkyl, CN, hydroxyl, CF3, —NReRf, —ORe, —S(O)pRe and C3-C6 cycloalkyl; j is 2, 3, 4 or 5; and, p is 0, 1 or 2. 7. The method of claim 1 wherein the compound is a compound of formula IC having the structure: or a pharmaceutically acceptable salt thereof, wherein (a) Ra′ and Rb′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, or (C1-C6 linear or branched chain alkyl)heteroaryl, where said alkyl and cycloalkyl may be optionally substituted with one or more Rc; (b) Ra′ and Rb′ together form a chain comprising —(CRc′Rd′)j—, where Rc′ and Rd′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, halo, CN, hydroxyl, CF3, CONH2, —ORe, —NReRf, or —S(O)pRe; where Re and Rf are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, or C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CF3, and CONH2; or, (c) Ra′ and Rb′ together form an unsaturated, saturated or partially saturated monocyclic or bicyclic ring structure containing a total of five to eleven atoms having one to three heteroatoms independently selected from the group consisting of oxygen, nitrogen, and sulfur, wherein said monocyclic or bicyclic ring structure is further optionally substituted with one or more substituents selected from the group consisting of deuterium, halo, C1-C6 linear or branched chain alkyl, CN, hydroxyl, CF3, —NReRf, —ORe, —S(O)pRe and C3-C6 cycloalkyl; j is 2, 3, 4 or 5; and, p is 0, 1 or 2. 8. The method of claim 1 wherein the compound is a compound of formula ID having the structure: or a pharmaceutically acceptable salt thereof, wherein Y is -AR5, where A is a bond or —(CH2)k—, and R5 is C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, or is an unsaturated, saturated or partially saturated monocyclic or bicyclic ring structure containing a total of five to eleven atoms having one to three heteroatoms independently selected from the group consisting of oxygen, nitrogen, and sulfur, wherein said alkyl, C3-C6 cycloalkyl, aryl, or monocyclic or bicyclic ring structure is further optionally substituted with one or more substituents selected from the group consisting of deuterium, halo, C1-C6 linear or branched chain alkyl, CN, hydroxyl, CF3, —NRa′Rb′, —ORe, —S(O)pRe and C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CONH2, and SO2CH3, where (a) Ra′ and Rb′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, C3-C6 cycloalkyl, aryl, (aryl)C1-C6 linear or branched chain alkyl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, (heteroaryl)C1-C6 linear or branched chain alkyl, (heterocyclic)C1-C6 linear or branched chain alkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more Rc′, or (b) Ra′ and Rb′ together form a chain comprising —(CRc′Rd′)j—, where Rc′ and Rd′ are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, aryl, (C1-C6 linear or branched chain alkyl)aryl, heteroaryl, (C1-C6 linear or branched chain alkyl)heteroaryl, halo, CN, hydroxyl, CF3, CONH2, —ORe, —NReRf, or —S(O)pRe; where Re and Rf where are independently hydrogen, deuterium, C1-C6 linear or branched chain alkyl, or C3-C6 cycloalkyl, where said alkyl and cycloalkyl may be optionally substituted with one or more substituents selected from the group consisting of halo, CN, hydroxyl, CF3, and CONH2; j is 2, 3, 4 or 5; k is 1, 2, or 3; and, p is 0, 1 or 2. 9. The method of claim 1 wherein the compound is selected from the group consisting of: 4-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}pyridine-2-sulfonamide; 2,2,2-trifluoro-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-ethanesulfonamide; 2-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}propane-1-sulfonamide; 1-cyclopropyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-methanesulfonamide; N-{cis-3-[(butylsulfonyl)methyl]cyclobutyl}-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine; 1-cyclopropyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-azetidine-3-sulfonamide; 3-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-azetidine-1-sulfonamide; (1R,5S)—N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-6-oxa-3-azabicyclo[3.1.1]heptane-3-sulfonamide; (3R)-3-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-pyrrolidine-1-sulfonamide; (3S)-3-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-pyrrolidine-1-sulfonamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1-(oxetan-3-yl)methane-sulfonamide; 1-(3,3-difluorocyclobutyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methane-sulfonamide; trans-3-(cyanomethyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-cyclobutyl}cyclo-butanesulfonamide; cis-3-(cyanomethyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-cyclobutyl}cyclobutane-sulfonamide; N-[cis-3-({[(3,3-difluorocyclobutyl)methyl]sulfonyl}methyl)cyclobutyl]-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine; (1S,5S)-1-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-3-azabicyclo[3.1.0]hexane-3-sulfonamide; (1R,5R)-1-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-3-azabicyclo[3.1.0]hexane-3-sulfonamide; (3R)-1-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}meth-yl)sulfonyl]pyrrolidine-3-carbonitrile; 1-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]-4-(trifluoromethyl)piperidin-4-ol; N-(cis-3-{[(4, 4-difluoropiperidin-1-yl)sulfonyl]methyl}cyclobutyl)-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine; (3S)-1-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}meth-yl)sulfonyl]pyrrolidine-3-carbonitrile; N-(cis-3-{[(3-chloro-4-fluorophenyl)sulfonyl]methyl}cyclobutyl)-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine; N-(cis-3-{[(2-cyclopropylethyl)sulfonyl]methyl}cyclobutyl)-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine; N-methyl-N-[cis-3-({[1-(propan-2-yl)pyrrolidin-3-yl]sulfonyl}methyl)cyclobutyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine; 3,3-difluoro-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutane-sulfonamide; 1-[3-(cyanomethyl)oxetan-3-yl]-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-methanesulfonamide; cis-3-(cyanomethyl)-3-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-cyclobutanesulfonamide; trans-3-(cyanomethyl)-3-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide; N-(2-cyanoethyl)-N-methyl-N′-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}sulfuric diamide; N-{(1S,3R)-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclopentyl}propane-1-sulfonamide; 3-(2-hydroxypropan-2-yl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}benzene-sulfonamide; N-(cyclopropylmethyl)-N′-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}sulfuric diamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-4-(1H-pyrazol-3-yl)piperidine-1-sulfonamide; 2-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-2,6-dihydropyrrolo[3,4-c]pyrazole-5(4H)-sulfonamide; N-cyclopropyl-1-{trans-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methane-sulfonamide; 2-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyridine-4-carbonitrile; (1S,3S)-3-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)-sulfonyl]cyclopentanecarbonitrile; (1R,3R)-3-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]cyclopentanecarbonitrile; 1-cyclopropyl-N-{trans-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methane sulfonamide; 3-cyano-N-{trans-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}pyrrolidine-1-sulfonamide; N-methyl-N-{trans-3-[(propylsulfonyl)methyl]cyclobutyl}-7H-pyrrolo[2,3-d]pyrimidin-4-amine; and, 2-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1,3-thiazole-5-sulfonamide; or, a pharmaceutically acceptable salt thereof. 10. The method of claim 1 wherein the compound is 2-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1,3-thiazole-5-sulfonamide, or a pharmaceutically acceptable salt thereof. 11. The method of claim 1 wherein the compound is N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide, or a pharmaceutically acceptable salt thereof. 12. The method of claim 1 wherein the compound is trans-3-(cyanomethyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide or a pharmaceutically acceptable salt thereof. 13. The method of claim 1 wherein the compound is 1-(3,3-difluorocyclobutyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methanesulfonamide or a pharmaceutically acceptable salt thereof. 14. The method of claim 1 wherein the compound is N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1-(oxetan-3-yl)methanesulfonamide or a pharmaceutically acceptable salt thereof. 15. The method of claim 1 wherein the compound is (3R)-1-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyrrolidine-3-carbonitrile or a pharmaceutically acceptable salt thereof. 16. The method of claim 1 wherein the compound is 3,3-difluoro-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide or a pharmaceutically acceptable salt thereof. 17. The method of treating psoriasis of claim 1 comprising the step of administering to a subject an effective amount of a composition comprising the compound: (3R)-1-[({cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyr-rolidine-3-carbonitrile; or, a pharmaceutically acceptable salt thereof. 18. The method of treating psoriasis of claim 1 comprising the step of administering to a subject an effective amount of a composition comprising the compound: N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide; or, a pharmaceutically acceptable salt thereof. 19. The method of treating psoriasis of claim 1 comprising the step of administering to a subject an effective amount of a composition comprising the compound: 3-Cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-cyclobutyl}azetidine-1-sulfonamide; or, a pharmaceutically acceptable salt thereof. 20. The method of treating lupus of claim 1 comprising the step of administering to a subject an effective amount of a composition comprising a compound selected from the group consisting of 2-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1,3-thiazole-5-sulfonamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide; trans-3-(cyanomethyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide; 1-(3,3-difluorocyclobutyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methanesulfonamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1-(oxetan-3-yl)methanesulfonamide; (3R)-1-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyrrolidine-3-carbonitrile; 3,3-difluoro-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide; and, (1S,5S)-1-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-3-azabicyclo[3.1.0]hexane-3-sulfonamide; or, a pharmaceutically acceptable salt thereof. 21. The method of claim 19 wherein the compound is: (1S,5S)-1-Cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-3-azabicyclo[3.1.0]hexane-3-sulfonamide; or, a pharmaceutically acceptable salt thereof. 22. The method of claim 19 wherein the compound is: (3R)-1-[({cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyr-rolidine-3-carbonitrile; or, a pharmaceutically acceptable salt thereof. 23. The method of claim 19 wherein the compound is: N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide; or, a pharmaceutically acceptable salt thereof. 24. The method of claim 19 wherein the compound is: 3-Cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-cyclobutyl}azetidine-1-sulfonamide; or, a pharmaceutically acceptable salt thereof. 25. The method of treating atopic dermatitis of claim 1 comprising the step of administering to a subject an effective amount of a composition comprising a compound selected from the group consisting of 2-methyl-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1, 3-thiazole-5-sulfonamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide; trans-3-(cyanomethyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide; 1-(3,3-difluorocyclobutyl)-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methanesulfonamide; N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-1-(oxetan-3-yl)methanesulfonamide; (3R)-1-[({cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyrrolidine-3-carbonitrile; 3,3-difluoro-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}cyclobutanesulfonamide; and, (1S,5S)-1-cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-3-azabicyclo[3.1.0]hexane-3-sulfonamide; or, a pharmaceutically acceptable salt thereof. 26. The method of claim 25 wherein the compound is: (1S,5S)-1-Cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-3-azabicyclo[3.1.0]hexane-3-sulfonamide; or, a pharmaceutically acceptable salt thereof. 27. The method of claim 25 wherein the compound is: (3R)-1-[({cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}methyl)sulfonyl]pyr-rolidine-3-carbonitrile; or, a pharmaceutically acceptable salt thereof. 28. The method of claim 25 wherein the compound is: N-{cis-3-[Methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl}-propane-1-sulfonamide; or, a pharmaceutically acceptable salt thereof. 29. The method of claim 25 wherein the compound is: 3-Cyano-N-{cis-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-cyclobutyl}azetidine-1-sulfonamide; or, a pharmaceutically acceptable salt thereof.