# US 8,785,499 B2 · Targeting NAD biosynthesis in bacterial pathogens

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- Number: US 8,785,499 B2
- Document ID: US8785499B2
- Status: Granted
- Kind: B2
- Application number: 13/383,340
- Filed: 2010-07-12
- Published: 2012-07-26
- Granted: 2014-07-22
- Earliest claimed: 2009-07-10
- Assignees: University of Maryland, Baltimore; Board of Regents, The University of Texas System; Sanford-Burnham Medical Research Institute
- Applicants: Alexander Mackerell, Jr.; Hong Zhang; Andrei Osterman; Rohit Kolhatkar
- Inventors: Alexander Mackerell, Jr.; Hong Zhang; Andrei Osterman; Rohit Kolhatkar
- Web page: https://patentgrep.com/patent/US8785499B2

## CPC

- C07C 251/86: having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings
- A61P 31/04: Antibacterial agents
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS

## Abstract

The emergence of multidrug-resistant pathogens necessitates the search for new antibiotics acting on previously unexplored targets. Nicotinate mononucleotide adenylyltransferase of the NadD family, an essential enzyme of NAD biosynthesis in most bacteria, was selected as a target for structure-based inhibitor development. To this end, the inventors have identified small molecule compounds that inhibit bacterial target enzymes by interacting with a novel inhibitory binding site on the enzyme while having no effect on functionally equivalent human enzymes.

## Claims

### Claim 1

A pharmaceutical composition comprising Compound 01—02 as an active ingredient and a pharmaceutically acceptable carrier or excipient:

### Claim 2 (depends on 1)

The pharmaceutical composition of claim 1, wherein said Compound 01—02 inhibits bacterial nicotinate mononucleotide adenylyltransferase activity in a subject.

### Claim 3 (depends on 1)

A method of treating a bacterial infection in a subject in need thereof, comprising administering a therapeutically effective amount the pharmaceutical composition of claim 1 to said subject, wherein said bacterial infection is at least one selected from the group consisting of Escherichia coli, Bacillus anthracis, B. anthracis sterne, B. subtilis, S. aureus (MRS A) strain, Vancomycin and vancomycin-resistant enterococci (VRE), and Streptococcus pneumonia.

### Claim 4

A pharmaceutical composition comprising at least one compound of Formula 1 as an active ingredient and a pharmaceutically acceptable carrier or excipient:
wherein each R11 is independently selected from the group consisting of halogen and alkyl and s is an integer from 0 to 5.

### Claim 5 (depends on 4)

The pharmaceutical composition of claim 4, wherein said compound of Formula I inhibits bacterial nicotinate mononucleotide adenylyltransferase activity in a subject.

### Claim 6 (depends on 4)

A method of treating a bacterial infection in a subject in need thereof, comprising administering a therapeutically effective amount the pharmaceutical composition of claim 4 to said subject, wherein said bacterial infection is at least one selected from the group consisting of Escherichia coli, Bacillus anthracis, B. anthracis sterne, B. subtilis, S. aureus (MRS A) strain, Vancomycin and vancomycin-resistant enterococci (VRE), and Streptococcus pneumonia.