Amino acid block copolymer and preparation method and compound thereof
A technology of block copolymer and amino acid, applied in the field of amino acids, can solve the problems of difficult release, unclear structure, strong chemical bond, etc., and achieve the effect of good biocompatibility and long-lasting efficacy.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0057] The present invention also provides a preparation method of an amino acid block copolymer having a structure of formula (I), comprising:
[0058] The compound with the structure of formula (III) or formula (IV) reacts with the protected amino acid monomer in an organic solvent to obtain a compound with a protecting group;
[0059] Deprotecting the compound with a protecting group to obtain an amino acid block copolymer with a structure of formula (I); the amino acid monomer is γ-benzyl-L-glutamic acid ester-N-carboxylic acid anhydride and L-phenylalanine-N-internal carboxylic acid anhydride;
[0060]
[0061] Among them, R 1 are independently selected from hydrogen, alkyl or substituted alkyl;
[0062] R 5 is -O-, -OCONH-, -OCO-, -NHCOO- or -NHCO-;
[0063] m is the degree of polymerization, 20≤m≤500; r is the degree of polymerization, 1≤r≤10.
[0064] The R 1 Independent preferably C1~C40 alkyl or composed of sulfhydryl, sugar residue, aldehyde, carboxyl, viny...
Embodiment 1
[0099] Add 4.00g of polyethylene glycol monomethyl ether with a number average molecular weight of 5000 and a structure of formula (III) to the dry reaction bottle, and remove water by azeotropic removal with 60mL of anhydrous toluene at 130°C for 3 hours, then vacuum dry The remaining toluene; the obtained solid was dissolved in 40 mL of dry N,N-dimethylformamide to obtain the first solution; 2.10 g of γ-benzyl-L-glutamate-N-carboxylic acid anhydride was mixed with 1.53 gL-Phenylalanine-N-internal carboxylic acid anhydride was dissolved in 36 mL of dry N,N-dimethylformamide to obtain the second solution; in a nitrogen atmosphere, the first solution was mixed with the second solution, at room temperature , Stirring and reacting for 72h under nitrogen protection; after the reaction, drain N,N-dimethylformamide under reduced pressure, then dissolve the obtained solid in dichloromethane, settle with ether, filter with suction, and dry , to obtain poly compounds with protective gr...
Embodiment 2
[0103] Add 4.00g of polyethylene glycol monomethyl ether with a number average molecular weight of 5000 and a structure of formula (III) to the dry reaction bottle, and remove water by azeotropic removal with 60mL of anhydrous toluene at 130°C for 3 hours, then vacuum dry The remaining toluene; the obtained solid was dissolved in 40 mL of dry N,N-dimethylformamide to obtain the first solution; 4.20 g of γ-benzyl-L-glutamate-N-carboxylic acid anhydride was mixed with 1.53 gL-Phenylalanine-N-internal carboxylic acid anhydride was dissolved in 60 mL of dry N,N-dimethylformamide to obtain the second solution; in a nitrogen atmosphere, the first solution was mixed with the second solution, at room temperature , Stirring and reacting for 72h under nitrogen protection; after the reaction, drain N,N-dimethylformamide under reduced pressure, then dissolve the obtained solid in dichloromethane, settle with ether, filter with suction, and dry , to obtain poly compounds with protective gr...
PUM
Property | Measurement | Unit |
---|---|---|
radius | aaaaa | aaaaa |
radius | aaaaa | aaaaa |
radius | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com