N-alkyl-2-phenoxyethanamines, their preparation and use
The present invention provides a compound having the structure: (structurally represented) wherein R1, R2, R3, R4, and R5 are each independently H, halogen, CF3 or C1-C4 alkyl; R6 is alkyl; A is absent or present, and when present is —C(O)— or —C(O)NH—; B is substituted or unsubstituted monocycle, bicycle, heteromonocycle, heterobicycle, benzyl, CO2H or (C1-C4 alkyl)-CO2H, wherein when B is CO2H, then A is present and is —C(O)—, or a pharmaceutically acceptable salt thereof.
1. A compound having the structure:
wherein
R 1 , R 2 , R 3 and R 4 are each independently H, halogen, CF 3 or C 1 -C 4 alkyl, and R 5 is CF 3 , t-butyl, propyl or isopropyl;
R 6 is alkyl;
A is absent or present, and when present is
and
B has the structure:
wherein R 10 is H, C 1 -C 10 alkyl, C 3 -C 6 cycloalkyl, (C 1 -C 10 alkyl)-CF 3 , (C 1 -C 10 alkyl)-OCH 3 , (C 1 -C 10 alkyl)-halogen, SO 2 —(C 1 -C 10 alkyl), SO 2 —(C 1 -C 10 alkyl)-CF 3 , SO 2 —(C 1 -C 10 alkyl)-OCH 3 , SO 2 —(C 1 -C 10 alkyl)-halogen, C(O)—(C 1 -C 10 alkyl), C(O)—(C 1 -C 10 alkyl)-CF 3 , C(O)—(C 1 -C 10 alkyl)-OCH 3 , C(O)—(C 1 -C 10 alkyl)-halogen, C(O)—NH—(C 1 -C 10 alkyl), C(O)—N(C 1 -C 4 alkyl) 2 , (C 1 -C 10 alkyl)-C(O)OH, C(O)—NH 2 or oxetane,
wherein
R 7 is H, C 1 -C 4 alkyl, or oxetane; and
Y 1 , Y 2 , Y 3 and Y 4 are each independently CR 8 or N,
wherein each R 8 is independently H, halogen, C 1 -C 4 alkyl, C 1 -C 4 cycloalkyl, O—(C 1 -C 4 alkyl), C(O)OH, C(O)—NH 2 , C(O)—N(CH 3 ) 2 , C(O)—NHCH 3 , NHC(O)—N(CH 3 ) 2 , CN, or CF 3 ,
or a pharmaceutically acceptable salt thereof.
2. The compound of claim 1 having the structure:
3. The compound of claim 1 , wherein B has the structure:
4. The compound of claim 1 , wherein B has the structure:
5. The compound of claim 1 , wherein B has the structure:
wherein
R 7 is H, C 1 -C 4 alkyl, or oxetane; and
Y 1 , Y 2 , Y 3 and Y 4 are each independently CR 8 or N,
wherein each R 8 is independently H, halogen, C 1 -C 4 alkyl, C 1 -C 4 cycloalkyl, O—(C 1 -C 4 alkyl), C(O)OH, C(O)—NH 2 , C(O)—N(CH 3 ) 2 , C(O)—NHCH 3 , NHC(O)—N(CH 3 ) 2 , CN, or CF 3 .
6. The compound of claim 1 having the structure:
or a pharmaceutically acceptable salt thereof.
7. A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
8. A method for treating a disease characterized by excessive lipofuscin accumulation in the retina in a mammal afflicted therewith comprising administering to the mammal an effective amount of the compound of claim 1 .
9. The compound claim 1 , wherein R 1 , R 2 , R 3 and R 4 are each H; and R 5 is CF 3 , t-Bu or i-Pr.
10. The compound of claim 1 , wherein R 6 is methyl.