Patent ID: 7399877
Filing Date: 2008-07-15
Classification: A61K,A61P,C07F,C11D

Abstract:
1. A phospholipid derivative represented by the following formula (I): wherein R 1 CO and R 2 CO independently represent an acyl group having 8 to 22 carbon atoms; R 3 represents hydrogen atom, or a hydrocarbon group having 1 to 4 carbon atoms; symbol “a” represents an integer of 0 to 4; symbol “b” represents 0 or 1, provided that when a is 0, b is 0; X represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium; A 1 O and A 3 O independently represent an oxyalkylene group containing oxyethylene group and having 2 to 4 carbon atoms, wherein the ratio of the oxyethylene group to the oxyalkylene group having 2 to 4 carbon atoms in A 1 O and A 3 O is 0.5 or larger in terms of a weight ratio; A 2 O represents an oxyalkylene group having 3 or 4 carbon atoms; symbols “m” and “q” independently represent an average molar number of added oxyalkylene groups having 2 to 4 carbon atoms; and symbol “n” represent an average molar number of added oxyalkylene groups having 3 or 4 carbon atoms; provided that m, n and q satisfy the following conditions: