Abstract: The present invention provides novel carbamate-based cationic lipids of the general structure: or a salt, or solvate, or enantiomers thereof, wherein (a) R1 is a lipophilic moiety; (b) R2 is a positively charged moiety; (c) n is an integer from 1 to 8; (d) X is an anion or polyanion; and (e) m is an integer from 0 to a number equivalent to the positive charge(s) present on the lipid. The present invention further provides compositions of these lipids with polyanionic macromolecules, methods for interfering with protein expression in a cell utilizing these compositions, and a kit for preparing the same.

Abstract: The present invention provides novel carbamate-based cationic lipids of the general structure: 1

Abstract: The present invention provides novel amide-based cationic lipids of the general structure: 1

Abstract: The present invention provides novel amide-based cationic lipids of the general structure: or a salt, or solvate, or enantiomers thereof wherein; (a) Y is a direct link or an alkylene of 1 to about 20 carbon atoms; (b) R1 is H or a lipophilic moiety; (c) R2, R3, and R4 are positively charged moieties, or at least one but not all of R2,R3, or R4 is a positive moiety and the remaining are independently selected from H, an alkyl moiety of 1 to about 6 carbon atoms, or a heterocyclic moiety of about 5 to about 10 carbon atoms; (d) n and p are independently selected integers from 0 to 8, such that the sum of n and o is from 1 to 16; (e) X− is an anion or polyanion and (f) m is an integer from 0 to a number equivalent to the positive charge(s) present on the lipid; provided that if Y is a direct link and the sum of n and p is 1 then one of either R3 or R4 must have an alkyl moiety of at least 10 carbon atoms.

Abstract: The present invention provides novel carbamate-based cationic lipids of the general structure: or a salt, or solvate, or enantiomers thereof, wherein (a) R1 is a lipophilic moiety; (b) R2 is a positively charged moiety; (c) n is an integer from 1 to 8; (d) X is an anion or polyanion; and (e) m is an integer from 0 to a number equivalent to the positive charge(s) present on the lipid. The present invention further provides compositions of these lipids with polyanionic macromolecules, methods for interfering with protein expression in a cell utilizing these compositions, and a kit for preparing the same.

Abstract: The present invention provides novel phosphonic acid-based cationic lipids of the general structure: or a salt, or solvate, or enantiomers thereof wherein; (a) R1 is a lipophilic moiety; (b) R2 is a positively charged moiety; (c) R3 is a lipophilic moiety of 1 to about 24 carbon atoms, a positively charged moiety, or a negatively charged moiety; (d) n is an integer from 0 to 8; (e) X− is an anion or polyanion; (f) Y is N or 0, and (g) m is an integer from 0 to a number equivalent to the positive charge(s) present on the lipid. The present invention further provides compositions of these lipids with polyanionic macromolecules, methods for interfering with protein expression in a cell utilizing these compositions and a kit for preparing the same.

Abstract: Dibenzazole compounds having the general structure: ##STR1## wherein; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 are independently H or a substituent which aids in solubility of the compound or which provides a linker arm for linking the compound to another moiety; Y is H or a cleavable moiety; X is a hydrogen, halogen, CF.sub.3, or SO.sub.3 H; V and W are oxygen or sulfur; Z is --C.dbd.C--, --C.tbd.C-- or an aromatic ring moiety; and n is 0, 1, or 2. When n=0 at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 is a substituent which aids in solubility of the compound or which provides a linker arm for linking the compound to another moiety or X is a halogen, CF.sub.3 or SO.sub.3 H. These compounds are highly fluorescent and can be easily detected using a fluorometer. Derivatives in which the Y group is a substituent other than H contain a fluorescence inhibiting chemical moiety that upon removal restores the fluorescence of the compound.

Abstract: The present invention provides novel dimeric cationic lipids. The present invention further provides compositions of these lipids with anionic or polyanionic macromolecules, methods for interfering with protein expression in a cell utilizing these compositions and a kit for preparing the same.