Claims
- 1. A lipid membrane structure comprising, in a lipid membrane or salt thereof, a compound represented by formula (I): ##STR5## wherein (a) R.sub.1 represents a hydrogen atom or a fatty acid residue, said fatty acid residue having 1 to 30 carbon atoms;
- (b) R.sub.2 represents a hydrogen atom or acyclic hydrocarbon residue, said acyclic hydrocarbon residue having 1 to 30 carbon atoms;
- (c) R.sub.3 represents an amino group, a guanidino group or an amidino group;
- (d) n represents an integer of from 1 to 6, provided that R.sub.1 and R.sub.2 do not both represent a hydrogen atom; and
- (e) a sum of a number of carbon atoms of said fatty acid residue and said acyclic hydrocarbon residue is n the range of from 10 to 40 carbon atoms.
- 2. A lipid membrane structure as claimed in claim 1, wherein the fatty acid residue contains from 14 to 20 carbon atoms.
- 3. A lipid membrane structure as claimed in claim 1, wherein the acyclic hydrocarbon residue contains from 14 to 20 carbon atoms.
- 4. A lipid membrane structure as claimed in claim 1, wherein n is 3 or 4.
- 5. A lipid membrane structure as claimed in claim 1, wherein said lipid membrane structure is selected from the group consisting of a liposome, a micelle and a microemulsion.
- 6. A lipid membrane structure as claimed in claim 1, wherein a molar ratio of said compound of formula (I) or a sat thereof to the total content of the lipid components is at least about 1/40.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-162153 |
Jun 1988 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 07/373,838 filed Jun. 29, 1989, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (2)
Number |
Date |
Country |
3621306 |
Jan 1987 |
NLX |
WOA38704926 |
May 1988 |
WOX |
Continuations (1)
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Number |
Date |
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Parent |
373838 |
Jun 1989 |
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