The present invention provides compounds, compositions thereof, and methods of using the same.

This invention relates to a wax composition comprising a plurality of fatty acid amide compounds having the Formula (I): ##STR00001##
where R.sup.1, R.sup.2, n.sub.1, n.sub.2, m.sub.1, and m.sub.2 are as described herein. This invention also relates to a wax composition comprising: a) one or more fatty acid amide compounds having the Formula (II): ##STR00002##
and b) one or more fatty acid amide compounds having the Formula (III): ##STR00003##
where R.sup.1, R.sup.2, n.sub.1, and n.sub.2 are as described herein. This invention also relates to a fatty acid amide compound having the Formula (I) and a process for preparing a compound of Formula (I).

This invention relates to a wax composition comprising a plurality of fatty acid amide compounds having the Formula (I): ##STR00001##
where R.sup.1, R.sup.2, n.sub.1, n.sub.2, m.sub.1, and m.sub.2 are as described herein. This invention also relates to a wax composition comprising: a) one or more fatty acid amide compounds having the Formula (II): ##STR00002##
and b) one or more fatty acid amide compounds having the Formula (III): ##STR00003##
where R.sup.1, R.sup.2, n.sub.1, and n.sub.2 are as described herein. This invention also relates to a fatty acid amide compound having the Formula (I) and a process for preparing a compound of Formula (I).

A peptide having a fluoroalkyl group as its side chain and a method for producing, which comprises condensing a compound represented by the formula (6-2) or (6-4), where means that an asymmetric carbon atom has an absolute configuration of S or R, Rf is a C.sub.1-30 alkyl group which is substituted with at least two fluorine atoms, and which may further be substituted with a halogen atom other than a fluorine atom (when the C.sub.1-30 alkyl group is a C.sub.2-30 alkyl group, it may have 1 to 5 etheric oxygen atoms between carbon atoms), and R.sup.2 is a protecting group for the amino group, with a fluorinated amino acid having its carboxy group protected, an amino acid having its carboxy group protected, a fluorinated peptide having its C-terminal protected, or a peptide having its C-terminal protected.

A peptide having a fluoroalkyl group as its side chain and a method for producing, which comprises condensing a compound represented by the formula (6-2) or (6-4), where means that an asymmetric carbon atom has an absolute configuration of S or R, Rf is a C.sub.1-30 alkyl group which is substituted with at least two fluorine atoms, and which may further be substituted with a halogen atom other than a fluorine atom (when the C.sub.1-30 alkyl group is a C.sub.2-30 alkyl group, it may have 1 to 5 etheric oxygen atoms between carbon atoms), and R.sup.2 is a protecting group for the amino group, with a fluorinated amino acid having its carboxy group protected, an amino acid having its carboxy group protected, a fluorinated peptide having its C-terminal protected, or a peptide having its C-terminal protected.

A composition for the delivery of a nucleic acid compound is provided which comprises a cationic peptide or polymer and a lipidoid compound. The nucleic acid compound may be any chemically modified or unmodified DNA or RNA. The amount of the lipidoid in the composition is preferably low, relative to the cationic peptide or polymer.

A composition for the delivery of a nucleic acid compound is provided which comprises a cationic peptide or polymer and a lipidoid compound. The nucleic acid compound may be any chemically modified or unmodified DNA or RNA. The amount of the lipidoid in the composition is preferably low, relative to the cationic peptide or polymer.

Disclosed is use of an aspartic acid derivative having a structure represented by formula (I), or a racemate, stereoisomer, geometric isomer, tautomer, solvate or feed-acceptable salt thereof, in preparing an animal feed additive that significantly improves production performance of farmed animals,

##STR00001##

wherein Y and X are independently selected from a C.sub.1-C.sub.20 alkyl or —H; R.sup.1 is R.sup.1aC(═O) or H; R.sup.2 is R.sup.2aC(═O); and the R.sup.1a and R.sup.2a are independently selected from (A)(B)N—(CH.sub.2).sub.0-5—, and the A and B are independently selected from a C.sub.1-C.sub.20 alkyl or —H.

Disclosed is use of an aspartic acid derivative having a structure represented by formula (I), or a racemate, stereoisomer, geometric isomer, tautomer, solvate or feed-acceptable salt thereof, in preparing an animal feed additive that significantly improves production performance of farmed animals,

##STR00001##

wherein Y and X are independently selected from a C.sub.1-C.sub.20 alkyl or —H; R.sup.1 is R.sup.1aC(═O) or H; R.sup.2 is R.sup.2aC(═O); and the R.sup.1a and R.sup.2a are independently selected from (A)(B)N—(CH.sub.2).sub.0-5—, and the A and B are independently selected from a C.sub.1-C.sub.20 alkyl or —H.

Provided herein are lipids that can be used in combination with other lipid components, such as neutral lipids, cholesterol and polymer conjugated lipids, to form lipid nanoparticles for delivery of therapeutic agents (e.g., nucleic acid molecules) for therapeutic or prophylactic purposes, including vaccination.