Adenosine A2A antagonists with potent anti-cataleptic activity
摘要:
Structure-activity relationships of 8-styrylxanthines for in vivo adenosine A(2A) antagonism were explored. Diethyl substitution both at the 1- and 3-posit;on was found to dramatically potentiate the anti-cataleptic activity. (C) 1997 Elsevier Science Ltd.
DOI:
10.1016/s0960-894x(97)00440-x
作为产物:
描述:
(E)-6-amino-1,3-dipropyl-5-(3,4,5-trimethoxycinnamoylamino)uracil 、 sodium hydroxide 在
dioxane-water 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.17h,
以to give 6.83 g (yield 91%) of Compound 9 as white crystals的产率得到1,3-Dipropyl-8-[(E)-3,4,5-trimethoxystyryl]xanthine
The present invention relates to novel xanthine derivatives of the formula (I) which are selectively antagonistic to an adenosine A.sub.2 receptor, and pharmaceutically acceptable salts thereof. Formula (I): ##STR1## In the formula, R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom, a propyl group, a butyl group or an allyl group; R.sup.3 represents a hydrogen atom or a lower alkyl group; Y.sup.1 and Y.sup.2 are the same or different and each represents a hydrogen atom or a methyl group; and Z represents a substituted or unsubstituted phenyl group, a pyridyl group, an imidazolyl group, a furyl group or a thienyl group.
Therapeutic agents for use in the treatment of parkinson's disease
申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP0565377A1
公开(公告)日:1993-10-13
Disclosed are therapeutic agents for use in the treatment of Parkinson's disease, such agents being xanthine derivatives of the Formula (I) and their pharmaceutical acceptable salts :
where R1, R2 and R3 are each H, C1-C6 alkyl or allyl ; and R4 is cycloalkyl of 3 to 8 carbon atoms, a -(CH2)n-R5 group where n is an cycloalkyl of 3 to 8 carbon atoms, a - (CH2)n-R5 group where n is an integer of from 0-4 and R5 is an aryl group of 6 to 10 carbon atoms or a heterocyclic group, such aryl or heterocyclic group optionally being substituted by up to 3 substituent(s) selected from C1-C6 alkyl, hydroxy, C1-C6 alkoxy, halogen, nitro and amino ; or
a
group, where Y1 and Y2 are each H or CH3 and Z is a substituted or unsubstituted aryl or heterocyclic group as defined under R5.
A novel xanthine derivative represented by general formula (I), which selectively antagonizes adenosine receptor, and a pharmacologically acceptable salt thereof. In formula (I) R¹ and R² may be the same or different from each other and each represents hydrogen, propyl, butyl or allyl; R³ represents hydrogen or lower alkyl; Y¹ and Y² may be the same or different from each other and each represents hydrogen or methyl; and Z represents (un)substituted phenyl, pyridyl, imidazolyl, furyl or thienyl.
An antidepressant containing an active ingredient comprising a xanthine derivative represented by general formule (I) or a pharmacologically acceptable salt thereof, wherein R¹, R² and R³ may be the same or different from one another and each represents hydrogen, lower alkyl, alkyl or propargyl; R⁴ represents cycloalkyl, -(CH₂)n-R⁵ (wherein R⁵ represents optionally substituted aryl or optionally substituted heterocyclic group, and n represents an integer of 0 to 4) of group (A) wherein Y¹ and Y² may be the same or different from each other and each represents hydrogen, fluorine or methyl, and Z represents optionally substituted aryl, group (B) (wherein R⁶ represents hydrogen, hydroxy, lower alkyl, lower alkoxy, halogen, nitro or amino, and m represents an integer of 1 to 3), or optionally substituted heterocyclic group; and X¹ and X² may be the same or different from each other and each represents O or S.