Water-soluble triazapyridinophane-based complexing agents and corresponding fluorescent lanthanide complexes

Patent metadata

Field	Value
Publication number	US-2018362549-A1
Application number	US-201616060291-A
Country	US
Kind code	A1
Filing date	Dec 9, 2016
Priority date	Dec 9, 2015
Publication date	Dec 20, 2018
Grant date	—

Abstract

The invention relates to complexing agents of formula (I)

in which A 1 , A 2 , A 3 and R 1 are as defined in the description. The invention also relates to lanthanide complexes obtained from said complexing agents.
The invention can be used for marking biological molecules.

First claim

1 . A complexing agent of formula (I):

wherein:
the R 1 groups are identical and are either: —CO 2 H, or —PO(OH)R, wherein R is selected from the group consisting of: phenyl optionally substituted by an —SO 3 H group benzyl, methyl, ethyl, propyl, n-butyl, sec-butyl, isobutyl, and tert-butyl;
the A 1 , A 2 groups are identical or different and are selected from the group consisting of: a group of formula -L 1 -E; a group of formula (II) and a group of formula (II′);
the A 3 group is selected from the group consisting of: a group of formula —O-L 3 -G, a group of formula (II), a group of formula (II′), a group of formula and a group of formula (III′);

L 1 , L 2 and L 3 are identical or different and each represent a divalent linkage group;
E is a group that renders the complexing agent water-soluble, chosen selected from the group consisting of: —SO 3 H, —PO(OH) 2 , —CO 2 H, —N + Alk 1 Alk 2 Alk 3 , a carbohydrate residue, a sulfobetaine; and a PEG group;
G is a reactive group;
Alk 1 , Alk 2 , Alk 3 , which may be identical or different, each represent a (C 1 -C 6 )alkyl.

2 . The complexing agent as claimed in claim 1 , wherein A 1 and A 2 are identical and are a group of formula (II) and A 3 is a group of formula (III).

3 . The complexing agent as claimed in claim 1 , wherein A 1 is a group of formula (II), A 2 is an -L 1 -E group and A 3 is a group of formula (III).

4 . The complexing agent as claimed in claim 1 , wherein A 1 and A 2 are identical and are groups of formula (II), and A 3 is a group of formula —O-L 3 -G.

5 . The complexing agent as claimed in claim 1 , wherein A 1 and A 2 are identical and are groups of formula -L 1 -E and A 3 is a group of formula (III).

6 . The complexing agent as claimed in claim 1 , wherein A 1 and A 2 are identical and are groups of formula (II′) and A 3 is a group of formula (III′).

7 . The complexing agent as claimed in claim 1 , wherein A 1 is a group of formula (II′), A 2 is an -L 1 -E group and A 3 is a group of formula (III′).

8 . The complexing agent as claimed in claim 1 , wherein A 1 and A 2 are identical and are groups of formula (II′), and A 3 is a group of formula —O-L 3 -G.

9 . The complexing agent as claimed in claim 1 , wherein A 1 and A 2 are identical and are groups of formula -L 1 -E and A 3 is a group of formula (III′).

10 . The complexing agent as claimed in claim 1 , wherein the reactive group G is selected from the group consisting of: an acrylamide, an amine, an ester, an aldehyde, an alkyl halide, an anhydride, an aniline, an azide, an aziridine, a carboxylic acid, a diazoalkane, a haloacetamide, a halotriazine, dichlorotriazine, a hydrazine, an imido ester, an isocyanate, an isothiocyanate, a maleimide, a sulfonyl halide, a thiol, a ketone, an acid halide, a succinimidyl ester, a hydroxysuccinimidyl ester, a hydroxysulfosuccinimidyl ester, an azidonitrophenyl, an azidophenyl, a glyoxal, a triazine, and an acetylenic group.

11 . The complexing agent as claimed in claim 1 , wherein the spacer arms L 1 , L 2 and L 3 , when they are present, are selected from the group consisting of:
a linear or branched C 1 -C 20 alkylene group optionally containing one or more double or triple bonds; a C 5 -C 8 cycloalkylene group, a C 6 -C 14 arylene group, said alkylene, cycloalkylene or arylene groups optionally containing one or more hetero atoms, or one or more carbamoyl or carboxamido groups, and said alkylene, cycloalkylene or arylene groups being optionally substituted by C 1 -C 8 alkyl, C 6 -C 14 aryl, sulfonate or oxo groups; and a group having one of the following formulae:

wherein n, m, p, q are integers from 1 to 5.

12 . The complexing agent as claimed in claim 1 , wherein the -L 3 -G group, consists of (i) a reactive group G selected from the group consisting of: a carboxylic acid, an amine, a succinimidyl ester, a haloacetamide, a hydrazine, an isothiocyanate, and a maleimide group, and (ii) a spacer arm L 3 consisting of an alkylene group comprising from 1 to 5 carbon atoms.

13 . The complexing agent as claimed in claim 1 , wherein L 1 is a divalent group of formula:

where n is an integer from 1 to 5.

14 . The complexing agent as claimed in claim 1 , wherein L 2 is a divalent group of formula:

where n and m are integers 1 to 5.

15 . The complexing agent as claimed in claim 1 , wherein L 3 is a divalent group of formula:
—(CH 2 ) n —
where n is an integer from from 1 to 5.

16 . A fluorescent lanthanide complex comprising a complexing agent as claimed in claim 1 and a lanthanide selected from the group consisting of: Eu 3+ , Sm 3+ , and Tb 3+ .

17 . A fluorescent lanthanide complex of formula (IV), (V), (VI) or (VII) below:

wherein:
Ln 3+ is chosen from: Eu 3+ , Tb 3+ , Sm 3+ ;
R 3 is chosen from the following groups: OH;

18 . A fluorescent conjugate of a molecule of interest, wherein said conjugate is obtained by bringing a lanthanide complex as claimed in claim 16 , said complex comprising a reactive group G, into contact with said molecule of interest.

19 . The complexing agent as claimed in claim 10 , wherein the reactive group G is a group having one of the following formulae:

wherein w varies from 0 to 8 and v is equal to 0 or 1, and Ar is a saturated or unsaturated 5- or 6-membered heterocycle, comprising 1 to 3 heteroatoms, optionally substituted by a halogen atom.

Assignees

• Cisbio Bioassays
• Univ Toulouse
• Centre Nat Rech Scient

Inventors

• Lamarque Laurent
• Picard Claude
• Galaup Chantal
• Leygue Nadine
• Zwier Jurriaan
• Bourrier Emmanuel

Classifications

• C07F5/003 Primary

  without C-Metal linkages · CPC title

• G01N33/582

  with fluorescent label · CPC title

• C07D401/14

  containing three or more hetero rings · CPC title

• G01N2458/40

  Rare earth chelates · CPC title