Biodegradable Quinolone Antibiotics with Amide Bonds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The persistence and accumulation of non-degradable antibiotics in water resources pose a risk to water quality and promote antibiotic resistance in bacteria, as existing antibiotics are not effectively biodegradable and can retain antibiotic activity for extended periods, leading to environmental contamination and resistance development.
Innovation Solution
Development of environmentally friendly fluoroquinolone antibiotic variants with amide bonds on the basic structure, which are biodegradable and break down quickly under UV light, maintaining antibiotic activity for a sufficient period in the body but degrading rapidly, reducing the risk of resistance development and environmental contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-biodegradable antibiotics are used to treat infections, then antibiotic effectiveness is maintained, but accumulation in water resources occurs and promotes resistance development
Solution Approach 1:
The patent modifies the chemical structure of fluoroquinolone antibiotics by introducing amide bonds at specific positions (R3) in the molecule. This structural parameter change enables biodegradability while maintaining antibiotic activity, allowing the substance to break down in the environment after exerting its therapeutic effect, thus eliminating long-term accumulation and resistance promotion.
Solution Approach 2:
The invention creates antibiotics designed to be temporarily active and then readily degraded. The amide bond-containing structure allows the antibiotic to fulfill its therapeutic function and then be quickly broken down by environmental microorganisms, similar to disposable items that serve their purpose and are then discarded/degraded, preventing persistent environmental contamination.
2Duration of action of stationary object
If biodegradable compounds with amide bonds are introduced, then environmental persistence is reduced, but stability in the human body must be sufficient for effective treatment duration
Solution Approach 1:
The patent applies amide bonds specifically at the R3 position in the fluoroquinolone structure, while maintaining the stability of other critical structural elements. This localized modification enables biodegradability at the environmental level without compromising the overall molecular stability required for effective antibiotic action within the human body during the treatment period.
3Object-generated harmful factors
If amide bonds are added to the antibiotic backbone, then biodegradability is enhanced, but the risk of enzymatic cleavage in the human body increases
Solution Approach 1:
The patent uses proline, a natural amino acid, as the R3 substituent which contains an amide bond. This approach copies a biologically compatible structure that is already present in the human body, reducing the likelihood of unexpected enzymatic cleavage while still providing the desired environmental biodegradability through the same amide bond functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new antibiotic variants exhibit significant activity against E. coli while minimizing resistance development in other bacteria and environmental persistence, offering a pharmacologically and environmentally improved treatment option with reduced collateral selection pressure.
Implementation Method 1
after excretion from the body, the compounds are degraded relatively quickly (i.e., within a few weeks or months), for example, under the influence of UV light
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
The present invention relates to novel quinolone antibiotics and to the use thereof.