Lipids and lipid compositions for the delivery of active agents

1. A compound, or a pharmaceutically acceptable salt thereof, selected from:

1-(3,5-bis((Z)-octadec-9-en-1-yloxy)phenyl)-N,N-dimethylmethanamine;

1-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)-N,N-dimethylmethanamine;

2,2′-((3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzl)azanediyl)diethanol;

1-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl)pyrrolidine;

1-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl)azetidin-3-ol;

ethyl 2-((3,5-bis((Z)-octadec-9-en-1-yloxy)benzyl)(methyl)amino)acetate;

1-(3,5-bis((Z)-octadec-9-en-1-yloxy)benzyl)pyrrolidine;

2-((3,5-bis((Z)-octadec-9-en-1-yloxy)benzyl)(methyl)amino)acetic acid

1-((2-(3,5-bis((Z)-octadec-9-en-1-yloxy)phenyl)-1,3-dioxolan-4-yl)methyl)pyrrolidine;

1-(2-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)-1,3-dioxolan-4-yl)-N,N-dimethylmethanamine;

1-((2-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)-1,3-dioxolan-4-yl)methyl)piperidine;

(2-(3,5-bis((Z)-octadec-9-en-1-yloxy)phenyl)-1,3-dioxolan-4-yl)methyl 2-(dimethylamino)acetate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl4-(dimethylamino)butanoate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl3-(dimethylamino)propanoate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl2-(dimethylamino)acetate;

4-methyl-3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl3-(dimethylamino)propanoate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl3-(dimethylamino)-2-methylpropanoate;

2-(dimethylamino)ethyl 2,6-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)isonicotinate;

3-(dimethylamino)propyl2,6-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)isonicotinate;

(9Z,9′Z,12Z,12′Z)-5-(((3-(dimethylamino)propanoyl)oxy)methyl)-1,3-phenylene bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-5-(((4-(dimethylamino)butanoyl)oxy)methyl)-1,3-phenylene bis(octadeca-9,12-dienoate);

(2,6-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)pyridin-4-yl)methyl3-(diethylamino)propanoate;

(2,6-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)pyridin-4-yl)methyl 4-(dimethylamino)butanoate;

(2,6-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)pyridin-4-yl)methyl3-(dimethylamino)propanoate;

1-(2,6-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)pyridin-4-yl)-N,N-dimethylmethanamine;

di(9Z,12Z)-octadeca-9,12-dien-1-yl) 5-(((3-(dimethylamino)propanoyl)oxy)methyl)isophthalate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-ylcarbamoyl)benzyl 3-(dimethylamino)propanoate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-ylcarbamoyl)benzyl 4-(dimethylamino)butanoate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenethyl 3-(dimethylamino)propanoate;

3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl (3-(dimethylamino)propyl) carbonate;

(9Z,9′Z,12Z,127)-5-((((2-(dimethylamino)ethoxy)carbonyl)oxy)methyl)-1,3-phenylene bis(octadeca-9,12-dienoate;)

3-(dimethylamino)propyl 4-isopropyl-3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl carbonate;

4-bromo-3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl (3-(dimethylamino)propyl) carbonate;

4-chloro-3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl (3-(dimethylamino)propyl) carbonate;

N-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)benzyl)-2-(dimethylamino)acetamide;

3-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)propyl 3-(dimethylamino)propanoate;

N,N-dimethyl-1-(3,4,5-tris((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)methanamine;

2-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)-N,N-dimethylethanamine;

3-(3,5-bis((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenyl)-N,N-dimethylpropan-1-amine;

(9Z,9′Z,12Z,12′Z)-((5-(((3-(dimethylamino)propanol)oxy)methyl)-1,3-phenylene)bis(oxy))bis(ethane-2,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(((3-(dimethylamino)propanoyl)oxy)methyl)-1,3-phenylene)bis(oxy))bis(propane-3,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(2-(dimethylamino)acetoxy)methyl)-1,3-phenylene)bis(oxy))bis(propane-3,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(2-(dimethylamino)acetoxy)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(((3-(dimethylamino)propanoyl)oxy)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(((4-(dimethylamino)butanoyl)oxy)methyl)-1,3-phenylene)bis(oxy))bis(ethane-2,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(propane-3,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(ethane-2,1-diyl) bis(octadeca-9,12-dienoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(octane-8,1-diyl) dihexanoate;

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(octane-8,1-diyl) dioctanoate;

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(decane-10,1-diyl) dioctanoate;

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(decane-10,1-diyl) dihexanoate;

(9Z,9′Z,12Z,12′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(hexane-6,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(octane-8,1-diyl) bis(octadeca-9,12-dienoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(hexane-6,1-diyl) bis(decanoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(hexane-6,1-diyl) dioctanoate;

(9Z,9′Z,12Z,12′Z)-((5-((3-hydroxyazetidin-1-yl)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

(8Z,8′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(hexane-6,1-diyl) bis(dodec-8-enoate);

(9Z,9′Z,12Z,12′Z)-((5-((dimethylamino)methyl)-2-methyl-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(octane-8,1-diyl) bis(decanoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(octane-8,1-diyl) didodecanoate;

(9Z,9′Z,12Z,12′Z)-((5-((diethylamino)methyl)-2-methyl-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(propane-3,1-diyl) bis(3-octylundecanoate);

didecyl 8,8′-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))dioctanoate;

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(hexane-6,1-diyl) didodecanoate;

(Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) dioleate;

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) ditetradecanoate;

(9Z,9′Z,12Z,12′Z,15Z,15′Z)-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12,15-trienoate);

(9Z,12Z)-4-(3-((dimethylamino)methyl)-5-(4-(oleoyloxy)butoxy)phenoxy)butyl octadeca-9,12-dienoate;

(9Z,12Z,15Z)-4-(3-((dimethylamino)methyl)-5-(4-(9Z,12Z)-octadeca-9,12-dienoyloxy)butoxy)phenoxy)butyl octadeca-9,12,15-trienoate;

di((9Z,12Z)-octadeca-9,12-dien-1-yl) 5,5′-((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))dipentanoate;

didodecyl 6,6′((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))dihexanoate;

(9Z,12Z)-3-(3-((dimethylamino)methyl)-5-(3-((3-octylundecanoyl)oxy)propoxy)phenoxy)propyl octadeca-9,12-dienoate;

((5-((dimethylamino)methyl)benzene-1,2,3-triyl)tris(oxy))tris(decane-10,1-diyl) trioctanoate;

((5-((diethylamino)methyl)benzene-1,2,3-triyl)tris(oxy))tris(decane-10,1-diyl) trioctanoate;

(9Z,12Z)-4-(3-((dimethylamino)methyl)-5-(4-((Z)-dodec-8-enoyloxy)butoxy)phenoxy)butyl octadeca-9,12-dienoate;

(9Z,12Z)-4-(3-((dimethylamino)methyl)-5-(4-((3-octylundecanoyl)oxy)butoxy)phenoxy)butyl octadeca-9,12-dienoate;

(9Z,9′Z,12Z,12′Z)-((5-(pyrrolidin-1-ylmethyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(7-hexyltridecanoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(9-pentyltetradecanoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(5-heptyldodecanoate);

((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(3-octylundecanoate);

(9Z,9′Z,12Z,12′Z)-((5-(3-(piperidin-1-yl)propyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(3-(dimethylamino)propyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((5-(3-morpholinopropyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl) bis(octadeca-9,12-dienoate);

((5-(((3-(dimethylamino)propanoyl)oxy)methyl)-1,3-phenylene)bis (oxy))bis(octane-8, 1-diyl) bis(decanoate);

((5-(((4-(dimethylamino)butanoyl)oxy)methyl)-1,3-phenylene)bis(oxy))bis(octane-8,1-diyl) bis(decanoate);

(9Z,9′Z,12Z,12′Z)-(5-(((3-(dimethylamino)propanoyl)oxy)methyl)-1,3-phenylene)bis(methylene) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(octadeca-9,12-dienoate);

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) ditridecanoate;

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(3-octylundecanoate);

(9Z,12Z)-3-((dimethylamino)methyl)-5-(((3-octylundecanoyl)oxy)methyl)benzyl octadeca-9,12-dienoate;

(9Z,9′Z,12Z,12′Z)-(5-((((3-(diethylamino)propoxy)carbonyl)oxy)methyl)-1,3-phenylene)bis(methylene) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-(5-((((2-(dimethylamino)ethoxy)carbonyl)oxy)methyl)-1,3-phenylene)bis(methylene) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-(5-((((3-(dimethylamino)propoxy)carbonyl)oxy)methyl)-1,3-phenylene)bis(methylene) bis(octadeca-9,12-dienoate);

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(5-heptyldodecanoate);

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(7-hexyltridecanoate);

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(9-pentyltetradecanoate);

O,O′-((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene)) di((9Z,12Z)-octadeca-9,12-dien-l-yl) disuccinate;

O,O′-((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene)) bis(10-(octanoyloxy)decyl) disuccinate;

O ′1 ,O 1 -(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene)) 8-dinonyl dioctanedioate;

O ′1 ,O 1 -(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene)) 9-dioctyl dinonanedioate;

(9Z,9′Z,12Z,12′Z)-(((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene))bis(oxy))bis(4-oxobutane-4,1-diyl) bis(octadeca-9,12-dienoate);

(((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene))bis(oxy))bis(8-oxooctane-8,1-diyl) bis(decanoate);

(((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene))bis(oxy))bis(4-oxobutane-4,1-diyl) dioctanoate;

(((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene))bis(oxy))bis(6-oxohexane-6,1-diyl) dioctanoate;

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(10-(octanoyloxy)decanoate);

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(8-(octanoyloxy)octanoate);

(((5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene))bis(oxy))bis(6-oxohexane-6,1-diyl) bis(decanoate);

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(8-decanamidooctanoate); and

(5-((dimethylamino)methyl)-1,3-phenylene)bis(methylene) bis(6-(((nonyloxy)carbonyl)oxy)hexanoate);

(9Z,9′Z,12Z,12′Z)-((((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1-diyl) bis(octadeca-9,12-dienoate);

(9Z,9′Z,12Z,12′Z)-((((5-((diethylamino)methyl)-1,3-phenylene)bis(oxy))bis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1-diyl) bis(octadeca-9,12-dienoate);

((((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(propane-3,1-diyl))bis(oxy))bis(4-oxobutane-4,1-diyl) bis(decanoate);

O ′1 ,O 1 -(((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(propane-3,1-diyl)) 9-dioctyl dinonanedioate;

4,4′-(5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-1,2-diyl) tetraoctanoate;

(R)-4-(3((S)-3,4-bis(octanoyloxy)butoxy)-5-((dimethylamino)methyl)phenoxy)butane-1,2-diyl dioctanoate;

(5)-4-(3-((S)-3,4-bis(octanoyloxy)butoxy)-5-((dimethylamino)methyl)phenoxy)butane-1,2-diyl dioctanoate;

(R)-4-(3-(R)-3,4-bis(octanoyloxy)butoxy)-5-((dimethylamino)methyl)phenoxy)butane-1,2-diyl dioctanoate;

2-(3-(4-(5-((dimethylamino)methyl)-2-methyl-3((9Z,12Z)-octadeca-9,12-dien-1-yloxy)phenoxy)butoxy)-3-oxopropyl)propane-1,3-diyl dihexanoate;

(((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl))bis(propane-3,2,1-triyl) tetraoctanoate;

(((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(methylene))bis(propane-3,2,1-triyl) tetraoctanoate; and

((((5-((dimethylamino)methyl)-1,3-phenylene)bis(oxy))bis(butane-4,1-diyl))bis(oxy))bis(propane-3,2,1-triyl) tetraoctanoate; or a pharmaceutically acceptable salt thereof.