Substituted pyridoxine-lactam carboxylate salts
The present invention provides salt adducts comprising at least one positively charged moiety being a pyridoxine or a derivative thereof and at least one carboxylated 5- to 7-membered lactam ring, optionally additionally substituted, methods of their preparation, and pharmaceutical compositions and medicaments comprising them. Salt adducts of the invention and compositions comprising them may be used to in the treatment of diseases or disorders associated with or inflicted by alcohol consumption.
1. A salt adduct comprising a positively charged moiety of formula (I):
wherein
R 1 is straight or branched C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 3 and R 4 are each independently selected from formyl and straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, or C 1 -C 6 alkoxycarbonyl, and
a carboxylated lactam ring is selected from the group consisting of:
wherein
R 6 is selected from H, straight or branched C 1 -C 6 alkyl optionally substituted at least one halogen, straight or branched C 2 -C 6 alkenyl, straight or branched C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by a C 1 -C 6 alkyl;
R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 and R 14 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino, wherein the salt adduct is not metadoxine.
2. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is a compound of formula (II):
and
said positively charged moiety is compound (2):
R 6 is selected from H, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, straight or branched C 2 -C 6 alkenyl, straight or branched C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by a C 1 -C 6 alkyl;
R 7 , R 8 , R 9 , R 10 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino.
3. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is compound (1):
and
said positively charged moiety is a compound of formula (I):
wherein
R 1 is straight or branched C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 3 and R 4 are each independently selected from formyl and straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, or C 1 -C 6 alkoxycarbonyl.
4. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is compound (1):
and
said positively charged moiety is a compound of formula (I):
wherein R 1 is a C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 3 and R 4 are each independently selected from formyl and straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, or C 1 -C 6 alkoxycarbonyl.
5. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is compound (1):
and
said positively charged moiety is a compound of formula (I):
wherein R 2 is selected from —OH and C 1 -C 6 alkoxy; and
R 1 is straight or branched C 1 -C 6 alkyl;
R 3 and R 4 are each independently selected from formyl and straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, or C 1 -C 6 alkoxycarbonyl.
6. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is compound (1):
and
said positively charged moiety is a compound of formula (I):
wherein R 3 is —CH 2 R 15 , wherein R 15 is selected from —C 1 -C 6 alkoxy, —OH and —NH 3 + ; and
R 1 is straight or branched C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 4 is selected from formyl and straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, or C 1 -C 6 alkoxycarbonyl.
7. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is compound (1):
and
said positively charged moiety is a compound of formula (I):
wherein R 4 is selected from formyl and —CH 2 R 16 , wherein R 16 is selected from —C 1 -C 6 alkoxy and —OH; and
R 1 is straight or branched C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 3 is selected from formyl, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, C 1 -C 6 alkoxycarbonyl.
8. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is a compound of formula (II):
wherein
R 6 is selected from H, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, straight or branched C 2 -C 6 alkenyl, straight or branched C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by a C 1 -C 6 alkyl;
R 7 , R 8 , R 9 , R 10 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino.
9. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is a compound of formula (II):
wherein
R 6 is C 1 -C 6 alkyl and R 7 , R 8 , R 9 , R 10 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino.
10. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is a compound of formula (II):
wherein
R 9 is C 1 -C 6 alkyl,
R 6 is selected from H, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, straight or branched C 2 -C 6 alkenyl, straight or branched C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by a C 1 -C 6 alkyl;
R 7 , R 8 , R 9 , R 10 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino.
11. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is a compound of formula (III):
and
said positively charged moiety is a compound of formula (I):
wherein
R 1 is straight or branched C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 3 and R 4 are each independently selected from formyl, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, C 1 -C 6 alkoxycarbonyl
R 6 is selected from H, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, straight or branched C 2 -C 6 alkenyl, straight or branched C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by a C 1 -C 6 alkyl;
R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 and R 14 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino.
12. The salt adduct according to claim 1 , wherein said carboxylated lactam ring is a compound of formula (IV):
and
said positively charged moiety is a compound of formula (I):
wherein
R 1 is straight or branched C 1 -C 6 alkyl;
R 2 is selected from —OH, straight or branched C 1 -C 6 alkoxy, and straight or branched C 1 -C 6 alkoxycarbonyl;
R 3 and R 4 are each independently selected from formyl, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, amine, hydroxyl, C 1 -C 6 alkoxy, thiol, C 1 -C 6 alkoxycarbonyl
R 6 is selected from H, straight or branched C 1 -C 6 alkyl optionally substituted by at least one halogen, straight or branched C 2 -C 6 alkenyl, straight or branched C 2 -C 6 alkynyl, cycloalkyl, aryl and heteroaryl optionally substituted by a C 1 -C 6 alkyl;
R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 and R 14 are each independently selected from H, straight or branched C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, aryl, and heteroaryl optionally substituted by at least one group selected from C 1 -C 6 alkyl, halogen, amino, cyano, nitro, thiol, C 1 -C 6 alkoxy, aminocarbonyl, C 1 -C 6 alkoxycarbonyl, C 1 -C 6 carboxyalkyl, C 1 -C 6 alkoxycarbonylalkyl and amidino.
13. The salt adduct according to claim 1 , selected from the following group:
14. A pharmaceutical composition comprising a salt adduct of claim 1 and a pharmaceutically acceptable carrier.