Enhanced Anti-Mycobacterial Drugs with Modified Backbone Structures

Publication ID: 24-11857521_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Anti-Mycobacterial Drugs with Modified Backbone Structures,” Published Technical Disclosure No. 24-11857521_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857521_0006_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,521.

Summary of the Inventive Concept

The inventive concept relates to novel oligo(carbamoylated guanidine) (OCG) compounds with modified backbone structures, enhancing their ability to treat mycobacterial infections, including tuberculosis, more effectively and efficiently.

Background and Problem Solved

The current TB treatment regimen is lengthy and rigorous due to difficulties associated with the existing OCGs. The inventive concept addresses these limitations by introducing modified backbone structures, enhancing the OCGs' ability to dissipate a component of the proton motive force (PMF) and deplete ATP production, thereby improving their bactericidal effects.

Detailed Description of the Inventive Concept

The new OCG compounds feature modified backbone structures, including cationic ends designed to interact with the bacterial cell membrane, enhancing their bactericidal effects. The inventive concept also encompasses methods for treating mycobacterial infections, systems for inhibiting mycobacterial growth, and pharmaceutical formulations for oral administration of OCGs with pH-sensitive coatings. These enhancements provide a synergistic effect in inhibiting mycobacterial growth, increasing the selectivity of OCGs towards mycobacterial cells, and improving their bioavailability in the gastrointestinal tract.

Novelty and Inventive Step

The new claims introduce novel modifications to the OCG backbone structure, enhancing their ability to treat mycobacterial infections. These modifications are non-obvious compared to the original patent, as they require a deep understanding of the OCG's mechanism of action and the specific limitations of the existing treatment regimen.

Alternative Embodiments and Variations

Other embodiments of the inventive concept could include modifying the H-bonding pattern of the OCG to increase its specificity towards mycobacterial cells, or combining OCGs with different backbone structures to provide a synergistic effect. Additionally, the inventive concept could be adapted for use in treating other bacterial infections, such as MRSA or E. coli.

Potential Commercial Applications and Market

The enhanced anti-mycobacterial drugs have significant commercial potential in the pharmaceutical industry, particularly in the development of new treatments for tuberculosis and other bacterial infections. The target market includes pharmaceutical companies, research institutions, and healthcare organizations focused on infectious disease treatment and prevention.

CPC Classifications

SectionClassGroup
A A61 A61K31/17
A A61 A61K31/133
A A61 A61K31/277
A A61 A61K31/4409
A A61 A61K31/47
A A61 A61K31/496
A A61 A61K31/498
A A61 A61K31/4965
A A61 A61K31/5377
A A61 A61P31/06
C C07 C07C279/12
C C07 C07D295/215
C C08 C08G65/00
C C08 C08G71/02
C C07 C07C2601/16

Field of Art

Medicinal Chemistry and Pharmaceutical Biotechnology, focusing on anti-mycobacterial drug design, with expertise in organic synthesis, molecular pharmacology, and bacterial membrane interactions

Person of Ordinary Skill (PHOSITA) Profile

A researcher with advanced degrees in chemistry or pharmaceutical sciences, experienced in drug design, familiar with bacterial membrane interactions, sequence analysis, and structure-activity relationship (SAR) studies

Obviousness Rationale

A PHOSITA would recognize that the PTD's modifications to oligo(carbamoylated guanidine) (OCG) structures represent predictable variations in anti-mycobacterial drug design. The disclosed backbone modifications and membrane interaction strategies are logical extensions of the source patent's fundamental approach to targeting mycobacterial cellular processes. The variations demonstrate standard pharmaceutical engineering techniques for improving drug efficacy and specificity.

Obvious Combinations & Variations

Source Patent Element
OCG compounds with variable backbone structures (n ranging from 3 to 50)
PTD Variation
Modifying OCG backbone to include cationic ends specifically designed to interact with bacterial cell membranes
Obviousness Reasoning
A PHOSITA would recognize that tailoring molecular ends to enhance membrane interactions is a known technique for improving drug penetration and efficacy, representing a predictable design optimization
Source Patent Element
Pharmaceutical composition for treating mycobacterial infections
PTD Variation
Adding pH-sensitive coating to enhance gastrointestinal tract bioavailability
Obviousness Reasoning
Developing targeted drug delivery mechanisms is a standard approach in pharmaceutical engineering, representing a finite and predictable solution to improving drug absorption
Source Patent Element
OCG compounds with variable structural configurations
PTD Variation
Combining OCGs with different backbone structures to create synergistic anti-mycobacterial effects
Obviousness Reasoning
Combining therapeutic agents to enhance efficacy is a well-established pharmaceutical strategy, representing an obvious approach for a skilled practitioner seeking improved treatment outcomes
Source Patent Element
Base OCG molecular structure targeting bacterial cellular processes
PTD Variation
Modifying H-bonding patterns to increase specificity towards mycobacterial cells
Obviousness Reasoning
Adjusting molecular interactions to improve target specificity is a standard technique in medicinal chemistry, representing a predictable optimization of the original molecular design
Source Patent Element
Anti-mycobacterial drug targeting cellular energy production
PTD Variation
Specifically designing OCGs to dissipate proton motive force and deplete ATP production
Obviousness Reasoning
Refining mechanism of action to more precisely target bacterial metabolic processes is a logical and predictable extension of the original therapeutic approach
35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. ยง 103, the variations disclosed in this publication would have been obvious to a person having ordinary skill in the art at the time of invention, with a reasonable expectation of success, when considering the teachings of US Patent 11857521 in combination with standard pharmaceutical engineering principles. The disclosed modifications represent predictable variations that a skilled practitioner would recognize as straightforward extensions of the foundational anti-mycobacterial drug design approach.

Original Patent Information

Patent NumberUS 11,857,521
TitleAnti-mycobacterial drugs
Assignee(s)The Florida International University Board of Trustees