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08/24/06 - USPTO Class 514 |  17 views | #20060189655 | Prev - Next | About this Page  514 rss/xml feed  monitor keywords

Methylphenidate derivatives and uses of them

USPTO Application #: 20060189655
Title: Methylphenidate derivatives and uses of them
Abstract: and salts and prodrugs thereof, wherein n, R1 and R2 are defined herein. The invention also provides certain novel compounds of formula I and pharmaceutical compositions comprising them. The present invention provides methods of using compounds of formula I: (end of abstract)



Agent: Faegre & Benson LLP Patent Docketing - Minneapolis, MN, US
Inventors: David Bar-Or, Nagaraja R.K. Rao
USPTO Applicaton #: 20060189655 - Class: 514317000 (USPTO)

Related Patent Categories: Drug, Bio-affecting And Body Treating Compositions, Designated Organic Active Ingredient Containing (doai), Heterocyclic Carbon Compounds Containing A Hetero Ring Having Chalcogen (i.e., O,s,se Or Te) Or Nitrogen As The Only Ring Hetero Atoms Doai, Hetero Ring Is Six-membered Consisting Of One Nitrogen And Five Carbon Atoms, Piperidines, Additional Ring Containing

Methylphenidate derivatives and uses of them description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20060189655, Methylphenidate derivatives and uses of them.

Brief Patent Description - Full Patent Description - Patent Application Claims
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CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims benefit of provisional applications Nos. 60/645,778, filed Jan. 20, 2005, and 60/663,006, filed Mar. 18, 2005, the complete disclosures of which are incorporated herein by reference.

FIELD OF THE INVENTION

[0002] The invention relates to uses of methylphenidate derivatives. The uses include inhibiting angiogenesis and treating angiogenic diseases and conditions.

BACKGROUND

[0003] Methylphenidate is the treatment of choice for children and adults diagnosed with attention deficit/hyperactivity disorder (ADHD), including its inattentive subtype (formerly known as attention deficit disorder or ADD). Certain derivatives of methylphenidate have also been proposed for the treatment of ADD (see U.S. Pat. No. 6,025,502) and for the treatment of other neurological disorders and conditions (see U.S. Pat. Nos. 5,859,249, 6,025,502 and 6,486,177 and PCT application WO 99/36403).

[0004] Methylphenidate is a mild central nervous stimulant and is also taught for treating apathy, fatigue, cognitive decline, and depression in cancer patients, AIDS patients and other seriously ill patients. See U.S. Pat. Nos. 5,908,850, 6,127,385, 6,395,752 and 6,486,177, Challman and Lipsky, Mayo Clin. Proc., 75:711-721 (2000) and Leonard et al., Hum. Psychopharmacol. Clin. Exp., 19:151-180 (2004).

[0005] It has been reported that methylphenidate is not carcinogenic, and that there is a less than expected rate of cancer, in rats and humans taking methylphenidate. See Dunnick and Hailey, Toxicology, 103:77-84 (1995), National Toxicology Program, Natl. Toxicol. Program Tech. Rep. Ser., 439:1-299 (1995), Dunnick et al., Cancer Lett., 102:77-83 (1996) and Teo et al., Mutat. Res., 537:67-79 (2003). However, there is some evidence that methylphenidate is carcinogenic in mice. Dunnick and Hailey, Toxicology, 103:77-84 (1995) and National Toxicology Program, Natl. Toxicol. Program Tech. Rep. Ser., 439:1-299 (1995). Further, some types of tumors have been reported to be decreased, while other types of tumors have been reported to be increased. See Dunnick and Hailey, Toxicology, 103:77-84 (1995), National Toxicology Program, Natl. Toxicol. Program Tech. Rep. Ser., 439:1-299 (1995) and Dunnick et al., Cancer Lett., 102:77-83 (1996).

SUMMARY OF THE INVENTION

[0006] The invention provides methods of using a compound of formula I wherein n is an integer from 1 to 5, and each R.sup.1 is independently aryl, heteroaryl, alkyl, cycloalkyl, alkoxy, aryloxy, acyl, carboxyl, hydroxyl, halogen, amino, nitro, sulfo or sulfhydryl. Each alkyl can optionally be substituted with hydroxyl, amino or sulfhydryl. R.sup.2 is hydrogen or lower alkyl.

[0007] In a first embodiment, the invention provides a method of inhibiting angiogenesis in an animal. The method comprises administering an effective amount of a compound of formula I, or a pharmaceutically-acceptable salt or a prodrug thereof, to the animal.

[0008] In a second embodiment, the invention provides a method of treating an angiogenic disease or condition in an animal. The method comprises administering a therapeutically effective amount of a compound of formula I, or a pharmaceutically-acceptable salt or a prodrug thereof, to the animal.

[0009] In a third embodiment, the invention provides a method of treating a proliferative disorder in an animal. The method comprises administering a therapeutically effective amount of a compound of formula I, or a pharmaceutically-acceptable salt or a prodrug thereof, to the animal.

[0010] The invention also provides a compound of formula IA: where

[0011] n is an integer from 1 to 5;

[0012] each R.sup.1 is independently a moiety of the formula --C(O)--R.sup.8, --OR.sup.7 or --C(O)--O--R.sup.3;

[0013] R.sup.2 is hydrogen or lower alkyl;

[0014] R.sup.3 is hydrogen, alkyl, cycloalkyl or aryl;

[0015] R.sup.7 is aryl; and

[0016] R.sup.8 is cycloalkyl or aryl.

[0017] The invention further provides a pharmaceutical composition comprising a pharmaceutically-acceptable carrier and a compound of formula IA: or a salt or prodrug thereof, where

[0018] n is an integer from 1 to 5;

[0019] each R.sup.1 is independently a moiety of the formula --C(O)--R.sup.8, --OR.sup.7 or --C(O)--O--R.sup.3;

[0020] R.sup.2 is hydrogen or lower alkyl;

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