Patent ID: 11957752
Assignee: SOOCHOW UNIVERSITY
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A

Claim 2:
3. A method for preparing a near-infrared nano-photosensitizer according to claim 1, comprising steps of:
(1) reacting a compound of Formula (II) with, , in the presence of acetic acid and piperidine in a solvent, to obtain a compound of Formula (III); and
(2) reacting the compound of Formula (III) obtained in Step (1) with azido functionalized polyethylene glycol in the presence of copper sulfate pentahydrate and sodium ascorbate in a solvent, to obtain a compound of Formula (I),
wherein the structures of Formulas (I), (II) and (III) are shown below:, wherein R is, , x+y=11, x and y are both a positive integer;
R1 is, , n=11-227, and n is a positive integer.