WO1998027100A1 - Heterocomplexe a nitrure de metal de transition radioactif - Google Patents
Heterocomplexe a nitrure de metal de transition radioactif Download PDFInfo
- Publication number
- WO1998027100A1 WO1998027100A1 PCT/JP1997/004626 JP9704626W WO9827100A1 WO 1998027100 A1 WO1998027100 A1 WO 1998027100A1 JP 9704626 W JP9704626 W JP 9704626W WO 9827100 A1 WO9827100 A1 WO 9827100A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- bis
- diphenylphosphinoethyl
- transition metal
- metal nitride
- Prior art date
Links
- -1 transition metal nitride Chemical class 0.000 title claims abstract description 98
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 56
- 229910052723 transition metal Inorganic materials 0.000 title claims abstract description 51
- 239000003446 ligand Substances 0.000 claims abstract description 97
- VURFVHCLMJOLKN-UHFFFAOYSA-N Diphosphine Natural products PP VURFVHCLMJOLKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 44
- 229910052713 technetium Inorganic materials 0.000 claims abstract description 14
- 150000003624 transition metals Chemical class 0.000 claims abstract description 11
- 239000013543 active substance Substances 0.000 claims abstract description 9
- 108090000765 processed proteins & peptides Proteins 0.000 claims abstract description 5
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 5
- GKLVYJBZJHMRIY-UHFFFAOYSA-N technetium atom Chemical compound [Tc] GKLVYJBZJHMRIY-UHFFFAOYSA-N 0.000 claims abstract description 5
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims abstract description 4
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- 125000004429 atom Chemical group 0.000 claims description 32
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- 229910052717 sulfur Inorganic materials 0.000 claims description 27
- 125000000217 alkyl group Chemical group 0.000 claims description 18
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 16
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- 125000003107 substituted aryl group Chemical group 0.000 claims description 15
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- 239000001257 hydrogen Substances 0.000 claims description 14
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 12
- YNNGZCVDIREDDK-UHFFFAOYSA-N aminocarbamodithioic acid Chemical compound NNC(S)=S YNNGZCVDIREDDK-UHFFFAOYSA-N 0.000 claims description 11
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- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F13/00—Compounds containing elements of Groups 7 or 17 of the Periodic Table
- C07F13/005—Compounds without a metal-carbon linkage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
- A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
- A61K51/04—Organic compounds
- A61K51/0474—Organic compounds complexes or complex-forming compounds, i.e. wherein a radioactive metal (e.g. 111In3+) is complexed or chelated by, e.g. a N2S2, N3S, NS3, N4 chelating group
- A61K51/0476—Organic compounds complexes or complex-forming compounds, i.e. wherein a radioactive metal (e.g. 111In3+) is complexed or chelated by, e.g. a N2S2, N3S, NS3, N4 chelating group complexes from monodendate ligands, e.g. sestamibi
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
- A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
- A61K51/04—Organic compounds
- A61K51/0474—Organic compounds complexes or complex-forming compounds, i.e. wherein a radioactive metal (e.g. 111In3+) is complexed or chelated by, e.g. a N2S2, N3S, NS3, N4 chelating group
- A61K51/0478—Organic compounds complexes or complex-forming compounds, i.e. wherein a radioactive metal (e.g. 111In3+) is complexed or chelated by, e.g. a N2S2, N3S, NS3, N4 chelating group complexes from non-cyclic ligands, e.g. EDTA, MAG3
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- C07F9/5004—Acyclic saturated phosphines
Definitions
- the present invention relates to a radioactive transition metal nitride heterocomplex, a radiopharmaceutical comprising the complex, and a method for producing the complex. More specifically, the present invention relates to a radioactive transition metal nitride heterocomplex in which two different ligands are coordinated to a radioactive technetium or radioactive rhenium nitride, and a radioactive image comprising the complex as an active ingredient.
- the present invention relates to a diagnostic agent or a radiotherapeutic agent and a method for producing the same.
- radioactive transition metals used as radiopharmaceuticals 9 gm T c is a nuclide most often used in the field of radioactive I Imaging diagnostic agent, 1 8 6 R e and 1 8 8 R e in the field of therapeutic agents It is a nuclide preferably used. Since these radioactive transition metals have different coordination numbers in various oxidation states and can form various complexes with a large number of ligands, they are generally used in the form of a complex.
- a ligand is first chelated to Tc, and then a bioactive substance is bound to the chelate, or a bioactive substance is first bound to the ligand, and then T
- Tc a method of coordinating c
- WO 90/06 137 contains bisethylthiocarbamate getyl-Tc nitride complex, bisdithiocarbamate dimethyl-Tc nitride complex, bisdithiocarbamic acid-di-n- Propyl-Tc nitride complexes, bisdithiocarbamic acid-N-ethyl N- (2-ethoxyl) -Tc nitride complexes and the like are disclosed.
- a transition metal oxide is treated with polyphosphine or the like as a transition metal reducing agent, and then a metal or ammonium nitride is used as a nitride nitrogen source.
- a method of obtaining a transition metal nitride complex by reacting to a nitride and then coordinating a biologically active monoclonal antibody or the like.
- metal nitride complexes can vary in number from monodentate to tetradentate. Since a coordination site can be adopted, multiple types of complexes are formed, and it has been difficult to obtain a single complex having a specific physiologically active ligand stoichiometrically.
- the radioactive metal is technetium or rhenium
- the oxidation number is from + I to + VI I valence
- the nitride complex is usually + V valent
- their metal atoms have five coordination sites
- Equation (V) is called a square pyramid structure (square pyramidal geometry, sp structure), and the arrangement structure of equation (VI) is called a trigonal bi-yramidal geometry (tbp structure).
- tbp structure trigonal bi-yramidal geometry
- a, b, c, d and a ', b', c ', d' are symbols attached to the coordination sites for convenience of explanation.
- the sp structure in Eq. (V) is a square pyramid with coordination sites a, b, c, and d forming a square, with this square as the base and N as the apex.
- the present inventors form a complex having a single structure from ligands that may coordinate to transition metal nitrides such as bidentate ligands, tridentate ligands, and tetradentate ligands.
- transition metal nitrides such as bidentate ligands, tridentate ligands, and tetradentate ligands.
- a single and stable transition was achieved by asymmetrically coordinating two different bidentate ligands.
- the present inventors have found that a metal nitride can be obtained and completed the present invention.
- An object of the present invention is to provide a novel single radioactive transition metal nitride capable of labeling a physiologically active substance such as a peptide or a hormone without impairing its activity.
- the present invention is a radioactive transition metal nitride hetero complex represented by the following formula (1) in which two different ligands are coordinated to a radioactive transition metal nitride:
- the radioactive transition metal M is radioactive technetium or radioactive rhenium
- N is a nitrogen atom
- X is a diphosphine compound or a dialsine compound
- Y is a combination of two electron donating atoms selected from the group consisting of 0, S and N. Having a bidentate ligand, wherein the electron donating atom may or may not be charged.
- Another embodiment of the present invention relates to a method for preparing an oxide of a radioactive transition metal M in a solution, in the presence or absence of a reducing agent, with carbazic acid or a derivative thereof or hydrazine or a derivative thereof, and a diphosphine compound or a dialsine compound. And a first step of obtaining a radioactive transition metal nitride intermediate by reacting the intermediate with a bidentate coordination having a combination of two electron donating atoms selected from the group consisting of 0, S and N 2.
- a single radioactive transition metal nitride hetero complex can be obtained in high yield without generating optical isomers or the like.
- This complex is a novel complex composed of a diphosphine compound, which is one neutral bidentate ligand, and one electron-donating bidentate ligand in the core of the transition metal nitride.
- the biological activity of the coordinating ligand itself or the molecular structure of the biologically active species bound thereto is less likely to be impaired.
- Figure 1 shows the chromatogram of acidic 9 9 m technetium nitride intermediate complex.
- Figure 2 shows the chromatogram of the g9 ra technetium nitride intermediate complex under alkaline conditions.
- Figure 3 shows a chromatogram of a 99 m technetium nitride heterocomplex coordinated by bis (diphenylphosphinoethyl) ethylamine (PNP) and 1-thio-1D-glucose ⁇ -g 1 u). .
- Figure 4 shows the chromatogram of the m- technetium nitride heterocomplex coordinated by PNP and thiosalicylic acid (tsa).
- Figure 5 shows PNP and dithiocarbamic acid mono-N-ethoxy mono-N-ethyl
- NOE Fig. 6 shows a chromatogram of a 991 "technetium nitride hetero complex coordinated by t).
- Fig. 6 shows a chromatogram of a 9 ⁇ technetium nitride hetero complex coordinated by PNP and cysteine (Cys).
- Figure 7 shows a chromatogram of a 99m technetium nitride heterocomplex in which PNP and cysteine ethyl ester (Cy sOEt) are rooster.
- Figure 8 shows a chromatogram of terrorism complex to 99 m technetium nitride PNP and Cy s -Ly s- P ro- Va 1- NH 2 is coordinated.
- FIG. 9 shows a scheme for synthesizing cysteine-desipramine (DESI).
- DESI cysteine-desipramine
- EDC 11- (3-dimethylaminopropyl) 1-3-ethylcarposimid TF A: Trifluoroacetic acid
- TIS Triisopropyl silane
- Trt trityl group
- Figure 10 shows the structural formula of a 99 " 1 technetium nitride heterocomplex coordinated by bis (dimethoxypropylphosphinoethyl) methoxethylamine (PNP 3) and cysteine-desibramine (DESI). It is.
- the radioactive transition metal nitride heterocomplex of the present invention comprises two different bidentate ligands X and Y coordinated to a metal nitride core having an M ⁇ N bond.
- the two ligands X and Y coordinate to the core of the metal nitride having M ⁇ ⁇ ⁇ N bonds, and form an asymmetric tbp structure without generating optical or geometric isomers during coordination. It is chosen to stabilize the complex.
- a ligand that coordinates to the trans position with respect to the metal ion so as to crosslink is preferably selected.
- the remaining bidentate b ', c' Alternatively, another ligand can be coordinated to the cis position.
- the bonding state of these two ligands, X and Y, is schematically shown in Equation (VII).
- Examples of such a ligand X include a diphosphine compound or a dialsine compound, and a diphosphine compound or a diphosphine compound having an atom such as a phosphorus atom or an arsenic atom having affinity for 7 ⁇ electrons at a symmetric position. It is preferably a diarcine compound. For example, it has two phosphorus atoms, which are 7 ⁇ electron acceptors, and a methylene group, an oxygen atom, and a zeolite atom having an appropriate length so that the phosphorus atoms are coordinated to the trans position with respect to Tc.
- R 1 , R 2 , R 3, and R 4 are each selected from the group consisting of a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group and a substituted aryl group.
- R 5 is a methylene group
- Z is an oxygen atom, a zeo atom, a methylene group
- R 7 group (where R 7 is hydrogen, alkyl group, substituted alkyl group, aryl group, substituted aryl group, amino group, amino acid Or a group having a physiological activity)) or an ethylenedioxy group
- P is a phosphorus atom
- n is an integer of l ⁇ n ⁇ 5, and m is 0 or 1. More preferably, n is an integer of 2 ⁇ n ⁇ 4.
- diphosphine compound of the formula (IV) bis (dimethoxyphosphinoethyl) amine ((CH 3 O) 2 -P-CH 2 CHz -NH-CH 2 CH 2 — P-I (OCH 3) 2), bis (dimethyl Tokishihosufi aminoethyl) Mechirua Mi emissions ((CH 3 0) 2 P- C H2 CH 2 -N (CH 3) -CH 2 CH 2 one P- (OC H 3) 2), bis (dimethyl Tokishihosufui Noechiru) Echiruami emissions ((CH 3 0) 2 - P - CH 2 CH 2 one N (CH 2 CH 3) one CH 2 CH 2 one P - (0 CH 3) 2 ), bis (dimethyl Tokishihosufu Inoechiru) Puropiruami emissions ((CH 3 0) 2 one P - CH 2 CH 2 -N ( CH 2 CH 2 CH 3) one CH 2 CH 2 one P- (OCH 3) 2)
- ⁇ in the diphosphine compound of the above formula (II) is an ethylenedioxy group (hereinafter abbreviated as POOP type), bis (diphenylphosphinoethyl) dioxyethylene ((C 6 H 5 )- P-CH 2 CH 2 —OCH 2 CH 2 0— CH 2 CH 2 —P— (C 6 H 5 ) 2 ) or bis (dimethoxyphosphine) dioxyethylene ((CH 30 ) —P—CH 2 CH 2 -OCH 2 CH 2 0 1 CH 2 CH 2 1 P— (OCH 3 )), when Z is oxygen (hereinafter abbreviated as POP type), bis (diphenylphosphinoethyl) ether ((C 6 H 5 ) 2 — P— CH 2 CH 2 —O—C H2 CH 2 — P— (C 6 H 5 ) 2), where Z is sulfur (hereinafter abbreviated as PSP type), bis (diphenyl) Phos
- the intermediate in which the diphosphine compound is coordinated to the M ⁇ N bond as ligand X has a tbp structure in which C 1- and OH- are coordinated in the remaining two coordination sites. It is stabilized.
- the stabilized intermediate easily exchanges with the bidentate ligand Y having an electron-donating atom pair to form a useful radioactive transition metal nitride hetero complex.
- a subsequent bidentate ligand having an electron-donating atom pair undergoes an exchange reaction, a single coordination structure is generated without generating optical isomers and the like. A complex can be obtained.
- the bidentate ligand Y has a combination of two electron-donating atoms selected from the group consisting of 0, S, and N, which may or may not be charged.
- the bidentate ligand itself preferably comprises a bioactive substance.
- physiologically active substances include sugars, amino acids, fatty acids, hormones, peptides, receptor-binding ligands, and the like. By binding these combinations of electron-donating atoms to these physiologically active substances, various useful bidentate ligands forming radiometal nitride hetero complexes can be obtained.
- a compound having a combination of electron-donating atoms [0—, S—] a combination of electron-donating atoms [N-, S—such as 1-thio-D-glucose, thiosalicylic acid, and their derivatives]
- compounds having a []] include esters such as cysteine and cysteine ethyl ester, peptides having a cysteine residue, 2-aminoethanethiol (H 2 N-CH 2 CH 2 -SH), and electron-donating atoms.
- Examples of compounds having the combination [S, S—] include dithiol-rubbamate [H 2 N—C (2S) -SH] and dithio-l-rubbamate mono-N-methyl-S-methyl
- Examples of compounds having [N, N] include ethylenediamines, phenylenediamines
- Examples of the compound having [0, 0] include salicylic acid, and examples of the compound having [0, N] include dalcosamine. These compounds themselves have the ability to have physiological activity. Furthermore, physiologically active substances such as sugars, amino acids, fatty acids, hormones, peptides, receptor binding ligands, etc. may be bound to these compounds.
- the radioactive transition metal nitride heterocomplex of the present invention is an intermediate of a transition metal nitride complex having a tbp structure or a pseudo-tbP structure from an oxide of a radioactive transition metal M and the above-mentioned diphosphine compound or dialsin compound X. It is produced by reacting [(M ⁇ N) X] int. With a bidentate ligand Y having a combination of the above electron donating atoms.
- the nitrogen donor is, in principle, selected from compounds having a functional group> N-N ⁇ .
- Dithiocarbazic acid mono-N-methyl S-methyl, succinic dihydrazide, acetyl hydrazide, isonicotinic hydrazide, sodium azide and the like are preferably used as nitrogen donor D.
- Nitrogen donors D may be used alone, but the use of different types in combination or in addition can improve the yield of intermediates.
- a reducing agent such as stannous chloride or sodium dithionite may be used in combination.
- the oxide of the transition metal M, 99m T c 0 4 - , 186 R e 0 4 -, 188 R e 0 4 - or the like is used.
- Tighter control of the coordination between the bioactive molecule and the transition metal nitride is very important in determining the properties of the resulting radiopharmaceutical.
- C 1- or OH-, etc. are coordinated to the remaining ligands after the bisphosphine compound is coordinated, when the pH of the reaction solution is in the acidic range. Because of the mixture of intermediates, the pH was adjusted in the presence of a pH buffer. By adjusting to ⁇ 10, an intermediate with a single structure can be obtained, and the exchange reaction can be more strictly controlled.
- Stoichiometric ratio of ligand X to bidentate ligand Y, XZY affects the yield of teguchi complex to the resulting radiometal nitride, but the combination of ligand X and bidentate ligand Y
- the appropriate ratio varies depending on the type.
- the bidentate ligand Y is composed of dithiocarbazic acid mono-N-methyl mono-S-methyl, aminoethanethiol, cysteinethyl ester, monothio yS-D-glucose, and thiosalicylic acid.
- the stoichiometric ratio X / Y is not particularly limited, and the dithio-power dimethyl rubbamate, dithiocarbamate-N-getyl, and dithiocarbamate-N-ethokine-N-ethyl are XZY1. Is a complex in which two bidentate ligands Y are substituted, 99m Tc (N)
- (Y) 2 is produced as a by-product, and the yield of the target asymmetric radiometal nitride hetero complex is reduced. Therefore, it is preferable to select conditions so that ⁇ 1.
- C Another way to prevent the formation of the disubstituted complex 99 m Tc (N) (Y) 2 is to increase the steric hindrance of ⁇ . Can be considered.
- the radioactive transition metal nitride heterocomplex obtained by the reaction of the formulas (1) and (2) is a pharmaceutically acceptable stabilizer such as ascorbic acid and ⁇ -aminobenzoic acid, and a sodium carbonate buffer. , ⁇ regulators such as sodium phosphate buffer, solubilizers such as medalmin, and excipients such as D-mannitol to be aseptically mixed into radioactive diagnostic or radiotherapeutic agents. be able to.
- the radiopharmaceutical diagnostic or therapeutic agent of the present invention can also be provided in the form of a kit for use at the time of use in combination with these additives.
- the radioimaging diagnostic agent and the radiotherapeutic agent of the present invention can be administered by commonly used parenteral means such as intravenous administration, and the dosage depends on the age, weight, target disease state, target radiological condition, etc. of the patient. It is determined according to the amount of radioactivity considered to be possible for imaging and treatment, taking into account the imaging equipment. If you intended for human, the dosage of diagnostic agent using labeling of 99m Tc is translated into radioactivity 99m Tc, 37MB Q ⁇ 1, a 850 MB q, preferably 1 85MB q ⁇ 740 MB q.
- the dose of a therapeutic agent using 186 Re or '88 Re label is 37 MBC! 118,500 MBq, preferably 370 MB (! ⁇ 7,400 MBQ.
- the radioactive imaging diagnostic agent and the radiotherapeutic agent according to the present invention did not show any acute toxicity as long as they were used at the above doses.
- diphosphine compound used as the ligand X and the bidentate ligand Y in the following examples are abbreviated as follows.
- Diphosphine compound X PNP; (C 6 H 5 ) 2 PCH 2 CH 2 N (C 2 H 5 ) CH 2 CH 2 P (C 6 H 5 ) 2
- Figures 1 and 2 show the radiochromatograms of the complex developed on a silica gel plate with a mixture of ethanol and formaldehyde Z benzene (0.85 / 2 / 1.5).
- chromatograms in acidic Shows three peaks, indicating that three products were obtained (Fig. 1).
- the pH is adjusted to about 8 or more, the chromatogram becomes a single peak ( Figure 2).
- This suggests that the remaining coordination site coordinated by PNP is occupied by an unstable ligand such as C 1-or a water molecule in the acidic state, and changes pH to about 8 or more. It is considered that these ligands are replaced by OH groups and show a single peak.
- Figure 3 shows the radiochromatogram of the complex developed on silica gel plate with tetrahydrofuran.
- the radiochemical purity of the final complex was higher than 95%.
- the complex contains a T c ⁇ N group, one PNP bidentate ligand in the metal ion at the trans position, and another bidentate ligand containing a dianion in the remaining bidentate.
- the complex was stable at a cis position via a negative gamma atom and oxygen which had lost the proton of the hydroxy group.
- Figure 4 shows the radiochromatogram of the complex developed on a silica gel plate with a mixture of ethanol / chloroform / benzene (0.7 / 2Z1.5). Radiochemistry of the emitter of the final complex Purity was higher than 95%.
- the complex contains a Tc ⁇ N group, one PNP bidentate ligand is located at the trans position on the metal ion, and the other bidentate is a didentate dianion tsa force ⁇ , proton
- the complex solution was stable through coordination via the negative Y atom that had lost the oxygen and the oxygen that had lost the carboxyl group proton.
- a PNP of 5 mg SDH and of 1. 5 mg was dissolved in a mixture of ethanol 0. 6 m 1 and HC 1 solution 0. 1 mg (lmo 1/1), followed physiologically compatible 99 m TCOR solution ( 0.5m 1, 50 MB q) was added. The mixture was heated at 80 ° C for 20 minutes, then cooled to room temperature, and 1 ml of 0.05 mo 1 Z1 sodium phosphate buffer was added to adjust the pH to about 7.8. Then, 5.Omg of NOEt dissolved in 0.50 ml of water was added, and the mixture was left at room temperature for 5 minutes. The complex finally obtained was analyzed by HTLC and HPLC.
- Figure 5 shows the radiochromatogram of the complex developed on a silica gel plate with a mixture of ethanol / chloroform Z benzene (1Z2Z1.5).
- the radiochemical purity of the final complex was higher than 95%.
- the complex contains a Tc ⁇ N group, with one PNP bidentate ligand coordinated to its metal ion in the trans position, and a monoanion NOE t coordinated in the remaining bidentate by the two zeo atoms of the CS 2 — group.
- the solution of the complex was stable.
- Figure 6 shows the radiochromatogram of the complex developed on a silica gel plate with a mixture of ethanol / chloroform Z benzene (0.85 / 2 / 1.5). Radiochemical purity of the final complex is 90 %.
- the complex contains a Tc ⁇ N group, and one PNP bidentate ligand is coordinated to the trans position with the metal ion, and the dianion of the proton atom-depleted atom and the proton-depleted amino group It is coordinated to the remaining bidentate by the nitrogen atom.
- an ester derivative (CysOEt) in the above process revealed that the carboxyl group of Cys was not involved in the coordination of the metal.
- CysOEt is a force in which the OH group of the carboxyl group of Cys is replaced by an ethoxy group.
- the radiochemical purity of the final complex obtained from this ligand (CysOEt) is 93 % ( Figure 7). Solutions of all complexes were stable.
- the PNP bidentate ligand is coordinated to the trans position, and the dianionic tetrapeptide ligand is coordinated to the remaining bidentate by the proton atom-depleted iodine atom and the nitrogen atom devoid of the terminal cysteine residue proton.
- the solution of the complex was stable.
- TLC sica gel plate
- Nitrogen donor D SDH diphosphine compound X PNP 1, PNP 2, PNP 4, PNP 5, bidentate ligand Y electron-donating atom pair [ ⁇ —, S], [ ⁇ , S—] or [ DTC, NS, CysOEt, tsa, and Sg1u having 0—, S] were used, respectively.
- bidentate ligand when Y you increase the amount of asymmetrical 99 "1 Tc to nitride a side reaction terrorist complexing 9 ⁇ Tc (N ) Although the formation reaction of (Y) 2 was involved, the amount of formation varied depending on the ratio of X to Y and did not depend on the absolute amount of Y. That is, the bidentate coordination used in this example was used.
- DTC, DEDC, NOE t having POP as diphosphine compound X and [NH—, S], [NH—, S—], [0—, S—], [S, S], etc. as bidentate ligand Y , tsa, FcCS, yS-1u, CysOEt, NS were used to evaluate the effect on complex formation, and complex 9 ⁇ Tc (N) (X) (Y) was synthesized as in Example 10. And examined.
- Y For DTC, 99m T c hetero complex to nitride 99 m T c (N) ( POP) (DTC) + was obtained with a radiochemical purity of 95% or more.
- Y DEDC, N OE t , tsa, F c CS, ⁇ - glu, Cy sOE t, complex 99m Tc in the case of using the NS disubstituted of Y ( ⁇ ) ( ⁇ ) 2 generation is Always accompanied.
- the degree of formation of the disubstituted complex containing two ⁇ was in the order of DEDC>NOEt>tsa>FcCS>yS—g1u>CysOEt> NS.
- Tween ⁇ 80 polyoxyethylene sorbitan monostearate
- the diphosphine compound used here can be expressed as R 2 P—CH 2 CH 2 —Z—CH 2 CH 2 —PR 2 , where the two R groups are each bonded to a phosphorus atom and the bridge group Z Is linked to two ethylene groups.
- Example 1 5 bidentate ligand cis Tin over Desi bra Min and synthetic hetero complex to the 99 m Tc nitride
- Cystine-desibramine (hereinafter abbreviated as DESI) in which cystine was bound to desibramine, a derivative of imibramine, which is a physiologically active substance having an antidepressant effect, was synthesized according to the synthesis scheme shown in FIG.
- This bidentate ligand, DE SI is obtained by an amide bond between the carboxyl group of cysteine and the terminal nitrogen atom of desibramine.
- Diphosphine compound X as a PNP 3 the 99m T c hetero complex to nitride using DE SI as bidentate ligand Y (hereinafter referred to as 99 m T c N- DE SI) was form if as follows.
- TcN-DESI complex was identified by thin-layer chromatography (TLC), high-performance liquid chromatography (HP LC), electrophoresis, and ion-exchange chromatography.
- TLC thin-layer chromatography
- HP LC high-performance liquid chromatography
- electrophoresis electrophoresis
- ion-exchange chromatography The measurement conditions are as follows.
- TLC silica gel plate; mobile phase; ethanol Z-cloth form / benzene (1.5 / 2 / 1.5), R f: 0.19: reverse phase; C18 plate: mobile phase; methanol / acetonitrile Z tetrahydrofuran Z ammonium acetate (0.5 mol / cc), R f: 0.3 1
- the retention time of the uncomplexed ligand is 7 minutes, while the retention time of the complex is 25 minutes. It was.
- the electrophoresis was carried out using a Bettmann paper, voltage (AV): 150 V, 1.5 hr, and phosphate buffer (0.1 M). No migration was seen, indicating that the complex was neutral.
- Ion exchange chromatography Cation exchange resin; Sep—Pak CM (COONa), Mi 11 pore, Anion exchange resin; Sep—Pak
- Rats were divided into two groups, Group A and Group B.
- Group A was injected with 20 ° C i of 99 mT cN-DES I.
- Group B was injected with 20 / Ci of 99 " 1 TcN-DESI and simultaneously injected with 1.0 mg / kg of unlabeled desipramine.
- the 99m TcN-DESI complex accumulated considerably in the heart and very high in the adrenal gland.
- the active ingredient was excreted at a very fast rate through the liver and kidneys.
- group B to which unlabeled desibramin was administered showed extremely low accumulation in the cortex, whereas unlabeled desibramin was administered.
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DE69721820T DE69721820T2 (de) | 1996-12-18 | 1997-12-16 | Nitrid-heterokomplexe von radioaktiven übergangsmetallen |
AU54128/98A AU730120B2 (en) | 1996-12-18 | 1997-12-16 | Radioactive transition metal nitride heterocomplex |
JP52753998A JP3935218B2 (ja) | 1996-12-18 | 1997-12-16 | 放射性遷移金属窒化物へテロ錯体 |
DK97947953T DK0949265T3 (da) | 1996-12-18 | 1997-12-16 | Nitrid-heterokomplekser af radioaktive overgangsmetaller |
US09/331,237 US6270745B1 (en) | 1996-12-18 | 1997-12-16 | Radioactive transition metal nitride heterocomplex |
AT97947953T ATE239745T1 (de) | 1996-12-18 | 1997-12-16 | Nitrid-heterokomplexe von radioaktiven übergangsmetallen |
CA002275451A CA2275451C (en) | 1996-12-18 | 1997-12-16 | Radioactive technetium and rhenium nitride heterocomplexes |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1009447A1 (en) * | 1997-03-14 | 2000-06-21 | The Curators Of The University Of Missouri | Hydroxymethyl phosphine compounds for use as diagnostic and therapeutic pharmaceuticals and method of making same |
JP2006505599A (ja) * | 2002-11-07 | 2006-02-16 | ブラッコ イメージング ソチエタ ペル アチオニ | 放射性遷移金属イミドヘテロ−ジホスフィン錯体、その調製およびその放射性医薬組成物 |
WO2006054466A1 (ja) * | 2004-11-19 | 2006-05-26 | Nihon Medi-Physics Co., Ltd. | 新規放射性テクネチウム-ビスホスフィノアミン錯体および該錯体を含む放射性画像診断剤 |
US7445765B2 (en) | 2000-07-28 | 2008-11-04 | Nihon Medi-Physics Co., Ltd. | Radiopharmaceutical for diagnostic imaging containing a technetium-99m nitride heterocomplex |
JP2009523702A (ja) * | 2006-01-20 | 2009-06-25 | 日本メジフィジックス株式会社 | 放射性画像診断のための窒化テクネチウム錯体の中間体化合物 |
JP2020504103A (ja) * | 2016-12-15 | 2020-02-06 | ブラッコ イメージング エス.ピー.エー. | テクネチウム系化合物により高感受性及び感熱性の標的指向性生体分子を標識化する方法 |
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WO2001054734A2 (en) * | 2000-01-28 | 2001-08-02 | Molypharma, S.A. | 188re-labelled 5-thio-d-glucose for radionucleotide tumor therapy |
CN1308269C (zh) | 2001-12-20 | 2007-04-04 | Sasol技术股份有限公司 | 使用铬基催化剂的烯烃三聚和寡聚 |
US8980870B2 (en) * | 2002-09-24 | 2015-03-17 | Boehringer Ingelheim International Gmbh | Solid telmisartan pharmaceutical formulations |
WO2004096735A2 (en) * | 2003-05-02 | 2004-11-11 | Kamaluddin Abdur-Rashid | Transfer hydrogenation processes and catalysts |
WO2006080993A1 (en) * | 2004-12-08 | 2006-08-03 | Purdue Research Foundation | Novel cationic metal complex radiopharmaceuticals |
US20130195756A1 (en) | 2012-01-31 | 2013-08-01 | General Electric Company | 99mTc IMAGING AGENTS AND METHODS OF USE |
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JPH05508842A (ja) * | 1990-07-04 | 1993-12-09 | セ・イ・エス・ビオ・アンテルナショナル | 遷移金属の窒化物錯体の製造方法 |
JPH07500816A (ja) * | 1991-07-22 | 1995-01-26 | シーアイエス バイオ インターナショナル | 遷移金属窒化物錯体からなる特に脳向性を有する放射性医薬化合物及びその製造方法 |
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GB8723438D0 (en) * | 1987-10-06 | 1987-11-11 | Amersham Int Plc | Cationic complexes of technetium-99m |
JPH07110869A (ja) | 1993-10-12 | 1995-04-25 | Fuji Xerox Co Ltd | 図形編集装置 |
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JPH07110869B2 (ja) * | 1988-03-09 | 1995-11-29 | セ・イ・エス・ビオ・アンテルナシヨナル | 放射性医薬品として使用できる99mTc、186Reまたは188Reの窒化物錯体の製造方法 |
JPH05508842A (ja) * | 1990-07-04 | 1993-12-09 | セ・イ・エス・ビオ・アンテルナショナル | 遷移金属の窒化物錯体の製造方法 |
JPH07500816A (ja) * | 1991-07-22 | 1995-01-26 | シーアイエス バイオ インターナショナル | 遷移金属窒化物錯体からなる特に脳向性を有する放射性医薬化合物及びその製造方法 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1009447A1 (en) * | 1997-03-14 | 2000-06-21 | The Curators Of The University Of Missouri | Hydroxymethyl phosphine compounds for use as diagnostic and therapeutic pharmaceuticals and method of making same |
EP1009447A4 (en) * | 1997-03-14 | 2001-04-11 | Univ Missouri | HYDROXYMETHYLIC PHOSPHINE COMPOUNDS FOR USE AS DIAGNOSTIC AND THERAPEUTIC PHARMACEUTICALS AND PROCESS FOR PRODUCING THE SAME |
US7445765B2 (en) | 2000-07-28 | 2008-11-04 | Nihon Medi-Physics Co., Ltd. | Radiopharmaceutical for diagnostic imaging containing a technetium-99m nitride heterocomplex |
JP2006505599A (ja) * | 2002-11-07 | 2006-02-16 | ブラッコ イメージング ソチエタ ペル アチオニ | 放射性遷移金属イミドヘテロ−ジホスフィン錯体、その調製およびその放射性医薬組成物 |
WO2006054466A1 (ja) * | 2004-11-19 | 2006-05-26 | Nihon Medi-Physics Co., Ltd. | 新規放射性テクネチウム-ビスホスフィノアミン錯体および該錯体を含む放射性画像診断剤 |
JP2009523702A (ja) * | 2006-01-20 | 2009-06-25 | 日本メジフィジックス株式会社 | 放射性画像診断のための窒化テクネチウム錯体の中間体化合物 |
US8182789B2 (en) | 2006-01-20 | 2012-05-22 | Nihon Medi-Physics Co., Ltd. | Intermediate compound of technetium nitride complex for radiodiagnostic imaging |
JP2020504103A (ja) * | 2016-12-15 | 2020-02-06 | ブラッコ イメージング エス.ピー.エー. | テクネチウム系化合物により高感受性及び感熱性の標的指向性生体分子を標識化する方法 |
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JP3935218B2 (ja) | 2007-06-20 |
KR100554563B1 (ko) | 2006-03-03 |
DK0949265T3 (da) | 2003-08-11 |
AU5412898A (en) | 1998-07-15 |
DE69721820T2 (de) | 2004-02-26 |
EP0949265A4 (en) | 2001-03-07 |
AU730120B2 (en) | 2001-02-22 |
KR20000057661A (ko) | 2000-09-25 |
DE69721820D1 (de) | 2003-06-12 |
NZ335950A (en) | 2000-06-23 |
PT949265E (pt) | 2003-08-29 |
EP0949265B1 (en) | 2003-05-07 |
ATE239745T1 (de) | 2003-05-15 |
US20020048549A1 (en) | 2002-04-25 |
CA2275451A1 (en) | 1998-06-25 |
US6270745B1 (en) | 2001-08-07 |
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ES2193407T3 (es) | 2003-11-01 |
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