NEW 5-AMINOLEVULINIC ACID PRODRUGS FOR USE IN PHOTODYNAMIC THERAPY AND PHOTODYNAMIC DIAGNOSIS
申请人:Eriksson Leif A.
公开号:US20110223105A1
公开(公告)日:2011-09-15
There is provided a compound of Formula
and salts thereof wherein
R
1
is an imine or an alkylated imine, said imine or alkylated imine comprising a linear or branched alkyl group of length C1 to C5;
R
2
are each independently
(a) an unsubstituted or substituted linear or branched alkyl group of chain length C
1-7
;
(b) an aryl substituted alkyl group, wherein said aryl group is substituted,
(c) an alkoxy substituted alkyl group, wherein said alkoxy group is substituted by a methoxy group or an alkoxy group substituted with an alkoxy group; or
(d) an H atom;
wherein said substituents in (a) and (b) are selected from hydroxy, alkoxy, acyloxy, alkoxycarbonyloxy, amino, aryl, nitro, oxo and fluoro groups.
R
3
and R
4
are linear or branched alkyl groups of length C1 to C6 constituting a ketal or a cyclic ketal.
The compounds claimed may be used for the manufacture of a medicament.