Patent ID: 7432253

Claim:
A compound: (i) of formula wherein R1 is selected from —CH 3 or —CH 2 —CH 3 , Cat+ is an organic or inorganic cation, n is an integer between 2 and 20; and R2 is selected from nucleoside derivatives, oligonucleotides, nucleic acids, amino acids, peptides, proteins, monosaccharides, oligosaccharides, polysaccharides, fatty acids, simple lipids, complex lipids, folic acid, tetrahydrofolic acid, phosphoric acids, inositol, vitamins, co-enzymes, flavonoids, aldehydes, halohydrins, phosphoepoxides of formula (1) or epoxides; (ii) of formula wherein R1 is —CH 2 CH 3 ; Cat+ is an organic or inorganic cation; and n is an integer between 2 and 20; (iii) of formula where R1 is selected from —CH 3 or —CH 2 —CH 3 ; Cat+ is an organic or inorganic cation; and n is an integer between 3 and 20; (iv) of formula wherein R1 is selected from —CH 3 or —CH 2 —CH 3 ; Cat+ is an organic or inorganic cation; and n is an integer between 2 and 20; (v) of formula where R1 is —CH 2 —CH 3 ; Cat+ is an organic or inorganic cation; and n is an integer between 2 and 20; or (vi) of formula wherein R1 is selected from —CH 3 or —CH 2 —CH 3 ; Cat+ is an organic or inorganic cation; and n is an integer between 2 and 20; and R2 is selected from nucleoside derivatives, oligonucleotides, nucleic acids, amino acids, peptides, proteins, monosaccharides, oligosaccharides, polysaccharides, fatty acids, simple lipids, complex lipids, folic acid, tetrahydrofolic acid, phosphoric acids, inositol, vitamins, co-enzymes, flavonoids, aldehydes, halohydrins, phosphoepoxides of formula (1) or epoxides.