IT1229853B - Mono:phosphorylated l-dopa ester(s) with high bio:availability - Google Patents

Mono:phosphorylated l-dopa ester(s) with high bio:availability

Info

Publication number
IT1229853B
IT1229853B IT8920209A IT2020989A IT1229853B IT 1229853 B IT1229853 B IT 1229853B IT 8920209 A IT8920209 A IT 8920209A IT 2020989 A IT2020989 A IT 2020989A IT 1229853 B IT1229853 B IT 1229853B
Authority
IT
Italy
Prior art keywords
solvent
alkyl
ester
optionally substituted
formula
Prior art date
Application number
IT8920209A
Other languages
Italian (it)
Other versions
IT8920209A0 (en
Inventor
Cesare Casagrande
Francesco Santangelo
Original Assignee
Simes
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Simes filed Critical Simes
Priority to IT8920209A priority Critical patent/IT1229853B/en
Publication of IT8920209A0 publication Critical patent/IT8920209A0/en
Priority to AT90200937T priority patent/ATE118216T1/en
Priority to EP90200937A priority patent/EP0393781B1/en
Priority to ES90200937T priority patent/ES2070994T3/en
Priority to DE69016688T priority patent/DE69016688T2/en
Priority to US07/512,211 priority patent/US5073547A/en
Priority to JP2103274A priority patent/JPH02292290A/en
Application granted granted Critical
Publication of IT1229853B publication Critical patent/IT1229853B/en

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Abstract

Compound of formula (I) and its pharmaceutically acceptable acid or base salts is new. In (I) the assymetric C atom marked with an asterisk has 5 configuration; either R or R1 is H or R40P(O)(OH)-(where R4 is H, phenyl, alkylphenyl or (1-6C) alkyl optionally substituted); R2 is straight or branched (1-4C) alkyl, (3-6) cycloalkyl or a phenylalkyl with (1-4C) in the alkyl portion optionally substituted. R3 is H or an acyl group of a natural alpha-aminoacid, e.g. glycine, alanine, valine, leucine, isoleucine, etc. (I) is prepared by phosphorylating an L-dopa ester of formula (I) where R and R1 are H, optionally protected at one hydroxy phenol group and, when R3 is H, at the amino group, in a solvent at a temperature of -80 to +100 deg.C, then removing the protecting groups, if any. The solvent can be the phosphorylating agent or an inert organic solvent, e.g. hydrocarbon, halocarbon, ether, ester, amide, etc. The phosphorylating agent is e.g. orthophosphoric acid, polyphosphoric acid, phosphorous pentoxide, chlorophosphoric acids, etc. (I) may be administered as a solid, e.g. tablet, granules, or as a liquid, e.g. syrup, emulsion. The preferred administration is orally. The doses are 100 mg to 5 g per day.
IT8920209A 1989-04-20 1989-04-20 Mono:phosphorylated l-dopa ester(s) with high bio:availability IT1229853B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
IT8920209A IT1229853B (en) 1989-04-20 1989-04-20 Mono:phosphorylated l-dopa ester(s) with high bio:availability
AT90200937T ATE118216T1 (en) 1989-04-20 1990-04-17 DOPAMINE MEDICINE PRECURSOR.
EP90200937A EP0393781B1 (en) 1989-04-20 1990-04-17 Dopamine pro-drug
ES90200937T ES2070994T3 (en) 1989-04-20 1990-04-17 DOPAMINE PROFARMACO.
DE69016688T DE69016688T2 (en) 1989-04-20 1990-04-17 Dopamine drug precursor.
US07/512,211 US5073547A (en) 1989-04-20 1990-04-20 Dopamine pro-drug
JP2103274A JPH02292290A (en) 1989-04-20 1990-04-20 Dopamine prodrug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8920209A IT1229853B (en) 1989-04-20 1989-04-20 Mono:phosphorylated l-dopa ester(s) with high bio:availability

Publications (2)

Publication Number Publication Date
IT8920209A0 IT8920209A0 (en) 1989-04-20
IT1229853B true IT1229853B (en) 1991-09-13

Family

ID=11164783

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8920209A IT1229853B (en) 1989-04-20 1989-04-20 Mono:phosphorylated l-dopa ester(s) with high bio:availability

Country Status (1)

Country Link
IT (1) IT1229853B (en)

Also Published As

Publication number Publication date
IT8920209A0 (en) 1989-04-20

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950313