Patent 6703424 Issued on March 9, 2004. Estimated Expiration Date: February 25, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
514/567, Benzene ring nonionically bonded514/538, Nitrogen bonded to carbon in Z moiety514/614, N-N containing (e.g., aminimine, hydrazine, etc.)514/654, The chain consists of two or more carbons which are unsubtituted or have acyclic hydrocarbyl substituents only514/657, Bicyclo ring system514/960SIGNIFICANT, TABLET FORMULATION (E.G., DESIGNATED EXCIPIENT, DISINTEGRANT, GLYDENT OR LUBRICANT, ETC.)
The present invention relates to a dispersible pharmaceutical composition comprising a therapeutically effective amount of L-DOPA ethyl ester, a therapeutically effective amount of a decarboxylase inhibitor, a filler, a disintegrant, and a lubricant. The present invention also provides a method of preparing the pharmaceutical composition described herein.
King, "Tablets, Capsules, and Pills" in Pharmaceutical Sciences, Remington, Mack Publishing (15th Edition, 1975) 89: 1576-1607
Banerjee et al., "Derivatives of 3,4-Dihydroxyphenylalanine for Peptide Synthesis" J. Org. Chem. (1976) 41(18):3056-3058
Bodor et al., "Improved Delivery Through Biological Membranes. 4. Prodrugs of L-DOPA" Journal of Medicinal Chemistry (1977) 20(11): 1435-1445
Cooper et al., "L-DOPA Methyl Ester--A Candidate for Chronic Systemic Delivery of L-DOPA in Parkinson's Disease" Clin. Neuropharmacol. (1984) 7:(1) 89-98
Cooper et al., "L-Dopa Esters as Potential Prodrugs: Behavioural Acitivity in Experimental Models of Parkinson's Disease" J. Pharm Pharmacol (Aug. 1987) 39(8): 627-635
El-Naggar et al., "Synthesis of Some Dipeptides Containing 2-Aminobutyric Acid, 3,4-Dihydroxyphenylalanine, Urea and Thiourea Derivatives" Polish Journal of Chemistry (1978) 52: 1809-1814
Fix et al., "Short-Chain Alkyl Esters of L-DOPA as Prodrugs for Rectal Absorption" Pharm. Res. (1989) 6(6): 501-505
Juncos et al., "Levodopa Methyl Ester Treatment of Parkinson's Disease" Neurology (1987) 37 : 1242-1245
Lai et al., New Compounds: Synthesis of Alkyl Esters of D,L-DOPA, J. Phar. Sci. (1973) 62: 510-511
Lou et al., "Direct Enantiomer Separation of Phenylalanine, DOPA and Their Intermediates by Supercritical Fluid Chromatography" Journal of Chromatography (1992) 605: 103-107
Marrel et al., "L-DOPA Esters as Potential Prodrugs" Eur. J. Med. Chem. (1985) 20(5): 459-465
Tomiuchi et al., "Enzymatic Reactions in Aqueous-Organic Media. XVII. Optical Resolution of Amino Acid Esters by Enzymatic Hydrolysis in Organic Solvents" Bull. Chem. Soc. Jpn.(1992) 65: 2599-2603
Venter et al., "Synthesis Phenylpropanolamine Derivatives as Potentitial ଲ-Adrenergic Agents" S. Afr. Tydskr. Chem (1978) 31(4): 135-137)