申请人:Asakawa Masumi
公开号:US20090202641A1
公开(公告)日:2009-08-13
Disclosed is a method of synthesizing a water-free nanotube capable of efficiently encapsulating a functional substance therein, in large quantities. The method comprises: dissolving, in an organic solvent heated up to a temperature equal to or less than a boiling point thereof, an N-glycoside type glycolipid represented by the following general formula (1): G-NHCO—R
1
(wherein G represents a sugar residue from which a hemiacetal hydroxyl group bonded to an anomeric carbon atom of the sugar is excluded; and R
1
represents an unsaturated hydrocarbon group having 10 to 39 carbon atoms), or a peptide-lipid conjugate represented by one of the following general formulas (2) and (3): R
2
CO(NH—CHR
3
—CO)
m
OH and H(NH—CHR
3
—CO)
m
NHR
2
(wherein: R
2
represents a hydrocarbon group having 6 to 24 carbon atoms; R
3
represents an amino-acid side chain; and m represents an integer of 1 to 10); (i) slowly cooling the obtained solution, and maintaining the cooled solution undisturbed at room temperature, or (ii) concentrating the obtained solution, and maintaining the concentrated solution disturbed at room temperature, or (iii) adding to the obtained solution a poor solvent for the N-glycoside type glycolipid or the peptide-lipid conjugate, and maintaining the mixed solution undisturbed at room temperature; collecting from the resulting solution a hollow fibrous organic nanotube formed through self-assembling in the stationary solution, and drying the collected hollow fibrous organic nanotube, in air at room temperature or by heating under reduced-pressure, to obtain a hollow fibrous organic nanotube.
本发明公开了一种合成无水纳米管的方法,该方法能够大量高效地封装功能物质。该方法包括:将下列通式(1)所表示的N-糖苷型糖脂或下列通式(2)和(3)所表示的肽-脂共轭物溶解于加热至沸点以下温度的有机溶剂中,其中,通式(1)中,G代表糖的缩合物,缩合物的半乙醇羟基与糖的缩合物的一个非环氧碳原子上的氢原子形成的羟基不包括在内;R1代表具有10至39个碳原子的不饱和烃基;通式(2)和(3)中,R2代表具有6至24个碳原子的碳氢基;R3代表氨基酸侧链;m代表1至10的整数。然后,(i)缓慢冷却所得溶液,并在室温下保持冷却的溶液不受干扰,或(ii)浓缩所得溶液,并在室温下保持浓缩的溶液受干扰,或(iii)向所得溶液中加入N-糖苷型糖脂或肽-脂共轭物的劣溶剂,并在室温下保持混合溶液不受干扰;从得到的溶液中收集在静止溶液中自组装形成的空心纤维有机纳米管,并通过在室温下空气干燥或在减压下加热干燥来获得空心纤维有机纳米管。