PROBLEM TO BE SOLVED: To provide a new lipid film structure excellent in retentivity in blood and selective delivery to a target position in the case of applying the structure to a drug delivery system.SOLUTION: There is provided the lipid film structure containing a polyoxyalkylene chain-containing lipid derivative represented by general formula (1) (in the formula, L, Y, W, X1, X2, X3, OA, Z, m1, m2, m3, n1, n2 and n3 are as defined in the specification).COPYRIGHT: (C)2012,JPO&INPIT【課題】ドラッグデリバリーシステムに適用した際の血中滞留性及び標的部位への選択的送達性に優れる新規な脂質膜構造体を提供すること。【解決手段】下記一般式(1)で表されるポリオキシアルキレン鎖含有脂質誘導体を含有する脂質膜構造体。(式中、L、Y、W、X1、X2、X3、OA、Z、m1、m2、m3、n1、n2及びn3は、本明細書の定義と同義である。)【選択図】なし
