N[ω,(ω-1)-dialkyloxy]- and N-[ω,(ω-1)-dialkenyloxy]-alk-1-yl-N,N,N-tetrasubstituted ammonium lipids and uses therefor
Patent 4897355 Issued on January 30, 1990. Estimated Expiration Date: October 29, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
424/450, Liposomes424/93.21, Eukaryotic cell435/440, PROCESS OF MUTATION, CELL FUSION, OR GENETIC MODIFICATION435/458The polynucleotide is coated with or encapsulated within a lipid containing material (e.g., liposome, etc.)
This invention relates to compounds of the formula ##STR1## or an optical isomer thereof wherein R1 and R2 are the same or different and are an alkyl or alkenyl group of 6 to 24 carbon atoms; R3, R4 and R5 are the same or different and are alkyl of 1 to 8 carbon atoms, aryl, aralkyl of 7 to 11 carbon atoms, or when two or three of R3, R4, and R5 are taken together to form quinuclidino, piperidino, pyrrolidino, or morpholino; n is 1 to 8; and X is a pharmaceutically acceptable anion.
October 29, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
