Compositions, methods, and systems for the synthesis and use of imaging agents

Patent metadata

Field	Value
Publication number	US-11744906-B2
Application number	US-201916663425-A
Country	US
Kind code	B2
Filing date	Oct 25, 2019
Priority date	Aug 10, 2012
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

The present invention provides compounds with imaging moieties for imaging a subject. The present invention also relates to systems, compositions, and methods for the synthesis and use of imaging agents, or precursors thereof. An imaging agent precursor may be converted to an imaging agent using the methods described herein. In some cases, a composition or plurality of imaging agents is enriched in 18F. In some cases, an imaging agent may be used to image an area of interest in a subject, including, but not limited to, the heart, cardiovascular system, cardiac vessels, brain, and other organs.

First claim

What is claimed:

1. A cassette for the preparation of an imaging agent comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) ethanol reservoir;
2) syringe with a solution of ascorbic acid or salt thereof;
3) syringe with water; and
4) final product vial;

wherein the imaging agent is of the formula:

2. The cassette of claim 1 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) spike connection for acetonitrile;
4) empty syringe;
5) reservoir with a solution of imaging agent precursor;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof;
9) inlet from HPLC;
10) ethanol reservoir;
11) syringe with a solution of ascorbic acid or salt thereof;
12) syringe with water; and
13) final product vial.

3. The cassette of claim 1 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) ethanol reservoir;
2) syringe with a solution of ascorbic acid or salt thereof;
3) syringe with water;
4) final product vial;
5) empty syringe; and
6) reaction vessel and exhaust.

4. The cassette of claim 1 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) spike connection for acetonitrile;
4) empty syringe;
5) reservoir with a solution of imaging agent precursor;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof;
9) inlet from HPLC;
10) ethanol reservoir;
11) syringe with a solution of ascorbic acid or salt thereof;
12) syringe with water;
13) final product vial;
14) empty syringe; and
15) reaction vessel and exhaust.

5. The cassette of claim 1 , wherein the solution of ascorbic acid or salt thereof is at a pH of about 2 or about 5.8.

6. An apparatus for synthesizing an imaging agent comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) ethanol reservoir;
2) syringe with solution of ascorbic acid or salt thereof;
3) syringe with water;
4) final product vial.

7. The apparatus of claim 6 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) spike connection for acetonitrile;
4) empty syringe;
5) reservoir with solution of imaging agent precursor;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof; and
9) inlet from HPLC.

8. The apparatus of claim 6 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) reservoir with solution of imaging agent precursor;
4) empty syringe;
5) spike connection for acetonitrile;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof; and
9) inlet from HPLC.

9. The apparatus of claim 6 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) ethanol reservoir;
2) syringe with solution of ascorbic acid or salt thereof;
4) syringe with water;
5) final product vial;
6) empty syringe; and
7) reaction vessel and exhaust.

10. The apparatus of claim 6 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) spike connection for acetonitrile;
4) empty syringe;
5) reservoir with solution of imaging agent precursor;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof;
9) inlet from HPLC;
10) ethanol reservoir;
11) syringe with solution of ascorbic acid or salt thereof;
12) syringe with water;
13) final product vial;
14) empty syringe; and
15) reaction vessel and exhaust.

11. The apparatus of claim 6 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) reservoir with solution of imaging agent precursor;
4) empty syringe;
5) spike connection for acetonitrile;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of a stabilizing agent;
9) inlet from HPLC;
10) ethanol reservoir;
11) syringe with solution of a stabilizing agent;
12) syringe with water;
13) final product vial;
14) empty syringe; and
15) reaction vessel and exhaust.

12. The apparatus of claim 6 , wherein the apparatus is capable of preparing an imaging agent of the formula:

13. An apparatus for synthesizing an imaging agent comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) ethanol reservoir;
2) final product vial;
3) syringe with water; and
4) syringe with solution of ascorbic acid or salt thereof.

14. The apparatus of claim 13 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) reservoir with solution of imaging agent precursor;
4) empty syringe;
5) spike connection for acetonitrile;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof; and
9) inlet from HPLC.

15. The apparatus of claim 13 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) spike connection for acetonitrile;
4) empty syringe;
5) reservoir with solution of imaging agent precursor;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof; and) inlet from HPLC.

16. The apparatus of claim 13 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) ethanol reservoir;
2) final product vial;
3) syringe with water;
4) syringe with solution of ascorbic acid or salt thereof;
5) empty syringe; and
6) reaction vessel and exhaust.

17. The apparatus of claim 13 , comprising a linear arrangement of a plurality of stopcock manifolds arranged in the order:
1) luer connections (2) to gas inlet and [18O]H2O recovery;
2) anion exchange cartridge—column eluting solution;
3) reservoir with solution of imaging agent precursor;
4) empty syringe;
5) spike connection for acetonitrile;
6) reaction vessel;
7) outlet to HPLC;
8) syringe with solution of ascorbic acid or salt thereof;
9) inlet from HPLC;
10) ethanol reservoir;
11) final product vial;
12) syringe with water;
13) syringe with solution of ascorbic acid or salt thereof
14) empty syringe; and
15) reaction vessel and exhaust.

18. The apparatus of claim 13 , c

Assignees

• Lantheus Medical Imaging Inc

Inventors

• Cesati Richard R
• Radeke Heike S
• Pandey Suresh K
• Purohit Ajay
• Robinson Simon P

Classifications

• A61K51/0459 Primary

  having six-membered rings with two nitrogen atoms as the only ring hetero atoms, e.g. piperazine · CPC title

• A61K49/0004

  Screening or testing of compounds for diagnosis of disorders, assessment of conditions, e.g. renal clearance, gastric emptying, testing for diabetes, allergy, rheuma, pancreas functions · CPC title

• B01J19/24

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• C07B59/002

  Heterocyclic compounds · CPC title

• C07D237/04

  having less than three double bonds between ring members or between ring members and non-ring members · CPC title