Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Liposomes
Patent
1994-05-04
1997-04-22
Azpuru, Carlos
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Liposomes
424423, 424427, 424428, 424449, 435829, 264 41, 264 433, 264 46, A61F 202, A61K 970, A61K 9127, B01J 1302
Patent
active
056227124
ABSTRACT:
This invention relates to compounds of the formula ##STR1## or an optical isomer thereof wherein R.sup.1 and R.sup.2 are the same or different and are an alkyl or alkenyl group of 6 to 24 carbon atoms; R.sup.3, R.sup.4, R.sup.5 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 R.sup.3, R.sup.4, and R.sup.5 are taken together to form quinuclidino, piperidino, pyrrolidino, or morpholino; n is 1 to 8; and X is a pharmaceutically acceptable anion.
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Eppstein Deborah A.
Felgner Philip L.
Gadek Thomas R.
Jones Gordon H.
Roman Richard B.
Azpuru Carlos
Syntex (U.S.A.) Inc.
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