# US 9,428,453 B2 · Cystine diamide analogs for the prevention of cystine stone formation in cystinuria

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- Number: US 9,428,453 B2
- Document ID: US9428453B2
- Status: Granted
- Kind: B2
- Application number: 14/146,103
- Filed: 2014-01-02
- Published: 2014-07-03
- Granted: 2016-08-30
- Earliest claimed: 2013-01-02
- Assignees: Rutgers, The State University of New Jersey
- Applicants: Rutgers, The State University of New Jersey
- Inventors: Longqin Hu; Amrik Sahota
- Web page: https://patentgrep.com/patent/US9428453B2

## CPC

- C07D 295/185: from aliphatic carboxylic acids
- C07C 323/60: with the carbon atom of at least one of the carboxyl groups bound to nitrogen atoms
- C07D 211/16: with acylated ring nitrogen atom
- C07C 2601/02: with a three-membered ring
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

Cystine analogs that improve the solubility of L-cystine in urine for treatment of cystinuria and which have the structure: and pharmaceutically acceptable salts, solvates and prodrugs thereof, wherein each R and R′ pair are independently selected from (i) or (ii); (i) R and R′ are independently selected from hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alcohol, substituted or unsubstituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclic, and substituted or unsubstituted heteroaryl, or (ii) R and R′ together form a substituted or unsubstituted heterocyclic ring structure, or a substituted or unsubstituted heteroaryl ring structure; X is hydrogen, or an alkyl; and Y is O or S.

## Claims

### Claim 1

A compound of formula (A):
and pharmaceutically acceptable salts, solvates and prodrugs thereof wherein each pair of R and R′ forms structure (B)
wherein Z is N-Q;
Q is hydrogen or an alkyl;
r is 1-3; and
X is hydrogen, or an alkyl; and Y is O or S.

### Claim 2

A compound having a structure selected from the group consisting of:
and pharmaceutically acceptable salts, solvates and prodrugs thereof.

### Claim 3

A pharmaceutical composition comprising a compound having formula (A):
and pharmaceutically acceptable salts, solvates and prodrugs thereof wherein
each R and R′ pair are independently selected from the group consisting of (i) and (ii);
(i) R and R′ are independently selected form the group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alcohol, substituted or unsubstituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclic, and substituted or unsubstituted heteroaryl,
(ii) R and R′ together form a substituted or unsubstituted heterocyclic ring structure, or a substituted or unsubstituted heteroaryl ring structure, said heterocyclic ring structure having the formula (B)
wherein R and R′ of at least one pair together form a ring structure having the formula (B)
wherein Z is N-Q; and Q is hydrogen or an alkyl; and r is 1-3; and
X is hydrogen, or an alkyl; and Y is O or S;
in a pharmaceutically acceptable carrier.

### Claim 4

A pharmaceutical composition comprising a compound having a structure selected from the group consisting of:
and pharmaceutically acceptable salts, solvates and prodrugs thereof; in a pharmaceutically acceptable carrier.