WO2024067531A1 - 一种成纤维细胞活化蛋白FAP和整合素αvβ3双重靶向化合物及其制备方法和应用 - Google Patents
一种成纤维细胞活化蛋白FAP和整合素αvβ3双重靶向化合物及其制备方法和应用 Download PDFInfo
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/64—Cyclic peptides containing only normal peptide links
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to the fields of nuclear medicine and molecular imaging, and in particular to a compound, a pharmaceutical composition comprising or consisting of the compound, a kit comprising or consisting of the compound or the pharmaceutical composition, and use of the compound or the pharmaceutical composition in diagnosing or treating a disease characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 .
- FAP fibroblast activation protein
- Fibroblast activation protein is a membrane serine peptidase expressed on the surface of activated fibroblasts in the tumor stroma and plays an important role in the occurrence and development of tumors.
- FAP Fibroblast activation protein
- Previous studies have shown that FAP is generally not expressed in normal human tissues, but is selectively highly expressed on the surface of stromal fibroblasts of more than 90% of epithelial malignancies, including breast cancer, ovarian cancer, lung cancer, colorectal cancer, gastric cancer, and pancreatic cancer. In view of its widespread expression and important role in tumors, FAP has become an important target for tumor imaging and treatment.
- Radionuclide-labeled fibroblast activation protein inhibitors (FAPI), represented by quinolinic acid derivatives, have made important progress in the field of precise tumor imaging.
- FAPI Radionuclide-labeled fibroblast activation protein inhibitors
- PET/CT imaging agents such as FAPI-02 and FAPI-04 have achieved more than 30 different types of tumor-specific imaging.
- Integrin ⁇ v ⁇ 3 is a heterodimeric receptor located on the cell surface. It is rarely expressed in normal vascular endothelial and epithelial cells, but is highly expressed on the cell surface of various solid tumors such as lung cancer, osteosarcoma, neuroblastoma, breast cancer, prostate cancer, bladder cancer, glioblastoma and invasive melanoma. It is also highly expressed on the membrane of new blood vessels in all tumor tissues, suggesting that integrin ⁇ v ⁇ 3 plays a key role in tumor growth, invasion and metastasis. Peptides containing the arginine-glycine-aspartic acid (RGD) sequence can specifically bind to integrin ⁇ v ⁇ 3.
- RGD arginine-glycine-aspartic acid
- RGD peptides labeled with various radionuclides have been successfully used in imaging studies of various tumor-bearing animal models.
- 18 F-Galacto-RGD has become the first non-invasive integrin ⁇ v ⁇ 3 targeted tumor imaging agent to enter clinical trials. It has been successfully used in PET diagnosis of tumor patients and has shown good biological distribution and specific target recognition in clinical trials of glioblastoma.
- the primary purpose of the present invention is to develop a new compound structure that can synergistically target FAP targets and integrin ⁇ v ⁇ 3 targets in tumors, thereby increasing the number and utilization efficiency of effective receptors in tumors, thereby improving tumor uptake efficiency and positive tumor detection efficiency and/or treatment efficiency.
- Another object of the present invention is to provide a method for preparing the novel compound, so as to synthesize the compound that can synergistically target the FAP target and the integrin ⁇ v ⁇ 3 target in tumors through a convenient and readily available synthetic route.
- Another object of the present invention is to provide use of the compound in diagnosing or treating a disease characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 .
- FAP fibroblast activation protein
- the present invention provides a dual targeting compound, the structure of which contains specific binding partners for both FAP and integrin ⁇ v ⁇ 3 .
- the dual-targeting compound has a structure (the structure is referred to as "FAPI-RGD" structure in the present invention), which can simultaneously target FAP and integrin ⁇ v ⁇ 3 .
- the structure of the dual-targeting compound is shown in the following formula (I) or formula (II):
- R 1 , R 2 , R 3 , and R 4 may be independently selected from H or F, and said R 1 , R 2 , R 3 , and R 4 may be the same or different.
- Z, Q, V and U are the same or different linking structures, independently selected from -NH-, Or a replacement structure based on -(CH 2 ) n -.
- each -CH2- is individually replaced with or without -O-, -NH-, -(CO)-, -NH-(CO)-, -CH( NH2 )- or -(CO)-NH-, provided that no two adjacent -CH2- groups are replaced.
- n is an integer selected from 0 to 30 (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30).
- A is a ligand structure that specifically binds to integrin ⁇ v ⁇ 3 , and its structure is shown in formula (III) or formula (IV):
- R 5 in the formula (III) is selected from H or OH.
- R 5 and R 6 in the formula (IV) are the same or different and are independently selected from H or OH.
- M and P in formula (IV) are replacement structures based on -( CH2 )n-, wherein each -CH2- is individually replaced with or without -O-, -NH-, -(CO)-, -NH-(CO)-, -CH( NH2 )- or -(CO)-NH-, provided that no two adjacent -CH2- groups are replaced; and n is an integer selected from 0 to 30 (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30).
- Z, Q, V, U, M and/or P described in any one of the above items is a replacement structure based on -(CH 2 ) n -, it can be independently selected from the following structures: -NH-CH 2 -(CH 2 -O-CH 2 ) 2 -CH 2 -(CO)-, -NH-CH 2 -(CH 2 -O-CH 2 ) 3 -CH 2 -(CO)-, -NH-CH 2 -(CH 2 -O-CH 2 ) 4 -CH 2 -(CO)-, -(CO)-NH- or -(CH 2 ) 0 - (i.e., a "null" structure).
- R 1 and R 2 in the structure of formula (I) are both H (i.e., R 1 is H and R 2 is H); in other preferred embodiments, R 1 and R 2 in the structure of formula (I) are both F (i.e., R 1 is F and R 2 is F); in other preferred embodiments, one of R 1 and R 2 in the structure of formula (I) is H and the other is F (i.e., R 1 is H and R 2 is F; or R 1 is F and R 2 is H).
- R 1 , R 2 , R 3 , and R 4 in the structure of formula (II) are all H; in other preferred embodiments, R 1 , R 2 , R 3 , and R 4 in the structure of formula (II) are all F; in other preferred embodiments, R 1 and R 2 in the structure of formula (II) are all H; R 3 and R 4 are all F; in other preferred embodiments, R 1 and R 2 in the structure of formula (II) are all H; one of R 3 and R 4 is H and the other is F (i.e., R 3 is H and R 4 is F; or R 3 is F and R 4 is H); in other preferred embodiments, R 1 and R 2 in the structure of formula (II) are all F; one of R 3 and R 4 is H and the other is F (i.e., R 3 is H and R 4 is F; or R 3 is F and R 4 is H).
- R 5 in the formula (III) is H; in other preferred embodiments, R 5 in the formula (III) is OH.
- R 5 and R 6 in the formula (IV) are both H (i.e., R 5 is H and R 6 is H); in other preferred embodiments, R 5 and R 6 in the formula (IV) are both F (i.e., R 5 is F and R 6 is F); in other preferred embodiments, R 5 in the formula (IV) is H and R 6 is F; in other preferred embodiments, R 5 in the formula (IV) is F and R6 is H.
- Z in the above formula (I) or formula (II) is selected from -NH- CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 3 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 4 - CH2- (CO)-, -(CO)-NH- or -(CH 2 ) 0 -; more preferably, Z in the above formula (I) or (II) is selected from -NH-CH 2 -(CH 2 -O-CH 2 ) 2 -CH 2 -(CO)-, -NH-CH 2 -(CH 2 -O-CH 2 ) 3 -CH 2 -(CO)-, -NH-CH 2 -(CH 2 -O-CH 2 ) 4 -CH 2 -(CO)-, -(CO)-NH- or -(CH 2 )
- Q in the above formula (I) or formula (II) is selected from More preferably, Q in the above formula (I) or formula (II) is selected from
- V in the above formula (I) or formula (II) is selected from -NH- CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 3 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 4 - CH2- (CO)-, -( CH2 ) 0- or -NH-(CO)-.
- U in the above formula (I) or formula (II) is selected from -NH-, -NH- CH2- .
- Z 1 in the above formula (II) is
- M in the above formula (IV) is selected from -NH- CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO ) -, -NH- CH2- (CH2-O- CH2 ) 3 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 4 - CH2- (CO)-, -( CH2 ) 0- ; more preferably, M in the above formula (IV) is selected from -NH- CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 4 - CH2- (CO)-.
- P in the above formula (IV) is selected from -NH- CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO ) -, -NH- CH2- (CH2-O- CH2 ) 3 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 4 - CH2- (CO)-, -( CH2 ) 0- ; more preferably, P in the above formula (IV) is selected from -NH- CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO)-, -NH- CH2- ( CH2 -O- CH2 ) 4 - CH2- (CO)-.
- the dual targeting compound is selected from the following structures:
- the present invention further provides a compound that can be labeled with a radionuclide based on any of the above dual-targeting compounds, wherein the compound that can be labeled with a radionuclide is formed by connecting a radionuclide chelating group to an amino group in any structure of Z, Q or V in any of the above formulas (I) or (II), and the general formula of the compound that can be labeled with a radionuclide is shown in the following formula (V) or (VI):
- the definitions of A, Z, Q, V, U, R 1 and R 2 in formula (V) are consistent with the definitions of A, Z, Q, V, U, R 1 and R 2 in the aforementioned formula (I); the definitions of A, Z, Q, V, U, Z 1 , R 1 , R 2 , R 3 and R 4 in formula (VI) are consistent with the definitions of A, Z, Q, V, U, Z 1 , R 1 , R 2 , R 3 and R 4 in the aforementioned formula (II).
- the W is a fragment with a nuclide chelating group, and its structure is any one of 1,4,7,10-tetraazacyclododecane-N,N',N,N'-tetraacetic acid (DOTA), ethylenediaminetetraacetic acid (EDTA), 1,4,7-triazacyclononane-1,4,7-triacetic acid (NOTA), triethylenetetraamine (TETA), iminodiacetic acid, diethylenetriamine-N,N,N',N',N"-pentaacetic acid (DTPA), bis-(carboxymethylimidazole)glycine or 6-hydrazinopyridine-3-carboxylic acid (HYNIC), or any one of the following structures:
- DOTA 1,4,7,10-tetraazacyclododecane-N,N',N,N'-tetraacetic acid
- EDTA ethylenediaminetetraacetic acid
- NOTA 1,4,7-triazacyclon
- D in any of the above items is a replacement structure based on -( CH2 ) p- , and each -CH2- is individually replaced with or without -O-, -NH-, -(CO)-, -NH-(CO)-, -CH( NH2 )- or -(CO)-NH-, the condition for the replacement is that no two adjacent -CH2- groups are replaced, and p is an integer selected from 0 to 30 (such as 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30).
- D described in any one of the above is selected from -(CO)-CH2-CH2-(CO)-, -(CO) -CH2- ( CH2 -O- CH2 ) 2 - CH2- (CO)- or -( CH2 ) 0- . (See structures V-38 to V-40).
- the W is selected from the following structures:
- the W is selected from the following structures:
- the compound that can be labeled with a radionuclide is selected from the following structures:
- the present invention also provides a radionuclide-labeled dual-targeted compound based on any of the above-mentioned compounds that can be labeled with radionuclides, wherein the radionuclide-labeled dual-targeted compound is formed by chelating the radionuclide with the W group in the compound represented by formula (V) or formula (VI) as described in any of the above-mentioned compounds.
- the radioactive nuclide can be selected from an isotope emitting ⁇ rays, an isotope emitting ⁇ rays, an isotope emitting ⁇ rays, an isotope emitting Auger electrons, or an isotope emitting X rays.
- the radionuclide is selected from 18 F, 51 Cr, 67 Ga, 68 Ga, 111 In, 99m Tc, 186 Re, 188 Re, 139 La, 140 La, 175 Yb, 153 Sm, 166 Ho, 86 Y, 90 Y, 149 Pm, 165 Dy, 169 Er, 177 Lu, 47 Sc, 142 Pr, 159 Gd, 212 Bi, 213 Bi, 72 As, 72 Se, 97 Ru, 109 Pd, 105 Rh, 101m Rh, 119 Sb, 128 Ba, 123 I, 124 I, 131 I, 197 Hg, 211 At, 151 Eu, 153 Eu, 169 Any one of Eu, 201 Tl, 203 Pb, 212 Pb, 64 Cu, 67 Cu, 198 Au, 225 Ac, 227 Th, 89 Zr or 199 Ag.
- the radionuclide is any one of 18 F, 64 Cu, 68 Ga, 89 Zr, 90 Y, 111 In, 99m Tc, 177 Lu, 188 Re or 225 Ac.
- the radionuclide is 18 F; in other specific embodiments, the radionuclide is 64 Cu; in other specific embodiments, the radionuclide is 68 Ga; in other specific embodiments, the radionuclide is 89 Zr; in other specific embodiments, the radionuclide is 90 Y; in other specific embodiments, the radionuclide is 111 In; in other specific embodiments, the radionuclide is 99m Tc; in other specific embodiments, the radionuclide is 177 Lu; in other specific embodiments, the radionuclide is 188 Re; in other specific embodiments, the radionuclide is 225 Ac.
- the present invention also provides any of the above dual-targeting compounds, compounds that can be labeled with radionuclides, and pharmaceutically acceptable tautomers, racemates, hydrates, solvates or salts of the dual-targeting compounds labeled with radionuclides.
- the present invention also provides a method for preparing a targeting compound represented by any one of the above formulas (V) and a radionuclide-labeled compound thereof, comprising:
- the carboxyl group of 6-hydroxyquinoline-4-carboxylic acid first undergoes an amide condensation reaction with the amino group of glycine tert-butyl ester; then the Boc-protected piperazine group is connected to the hydroxyl position of the amide condensation product through an alkyl chain; the Boc and tert-butyl protecting groups are removed under acidic conditions, and then the Boc protecting group is introduced into the piperazine ring; then an amide condensation reaction is carried out with (S)-pyrrolidine-2-carbonitrile hydrochloride or (S)-4,4-difluoropyrrolidine-2-carbonitrile hydrochloride; after removing the Boc protecting group, a condensation reaction is carried out with N-Boc-3-[2-(2-aminoethoxy)ethoxy]propionic acid; then the Boc protecting group is removed, and the product is reacted with propionic acid maleimide and protected cysteine in sequence, or with protected glutamic acid or lysine in sequence; finally
- radionuclide chelator selected from any one of hydroxysuccinimide-tetraazacyclododecane-N,N',N,N'-tetraacetic acid (DOTA-NHS), NOTA-succinimide ester (NOTA-NHS), succinimide active ester of iminodiacetic acid, succinimide active ester of diethylenetriamine-N,N,N',N',N"-pentaacetic acid (DTPA-NHS), bis-(carboxymethylimidazole)glycine or succinimide active ester of 6-hydrazinopyridine-3-carboxylic acid (HYNIC-NHS), to obtain a part of the compound represented by formula (V) that can be labeled with radionuclide;
- DOTA-NHS hydroxysuccinimide-tetraazacyclododecane-N,N',N,N'-tetraacetic acid
- NOTA-NHS NOTA-succ
- the compound that can be labeled with a radionuclide obtained in 2 is reacted with a compound containing a radionuclide according to an existing wet labeling method or a freeze-drying labeling method to prepare a radionuclide-labeled targeting compound of the present invention.
- the present invention further provides a pharmaceutical composition, comprising any of the above-mentioned dual-targeting compounds, compounds that can be labeled with radionuclides, dual-targeting compounds labeled with radionuclides, or any pharmaceutically acceptable combinations thereof.
- the invention relates to a dual-targeting compound of any one of the above items, a compound that can be labeled with a radionuclide, a dual-targeting compound labeled with a radionuclide, or any pharmaceutically acceptable tautomer, racemate, hydrate, solvate or salt thereof and any pharmaceutically acceptable carrier and/or excipient.
- the present invention further provides the use of any of the above dual-targeting compounds, compounds that can be labeled with radionuclides, and dual-targeting compounds labeled with radionuclides in the preparation of drugs for diagnosing or treating diseases characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 in animals or human individuals.
- FAP fibroblast activation protein
- the present invention also provides a method for diagnosing or treating a disease characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 in an animal or human individual using any of the dual-targeting compounds, compounds that can be labeled with radionuclides, and dual-targeting compounds labeled with radionuclides described above.
- FAP fibroblast activation protein
- the diseases characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 described in any of the above items include but are not limited to: cancer, chronic inflammation, atherosclerosis, fibrosis, tissue remodeling and scar disease; preferably, the cancer is further selected from breast cancer, pancreatic cancer, small intestine cancer, colon cancer, rectal cancer, lung cancer, head and neck cancer, ovarian cancer, hepatocellular carcinoma, esophageal cancer, hypopharyngeal cancer, nasopharyngeal cancer, laryngeal cancer, myeloma cells, bladder cancer, cholangiocarcinoma, clear cell renal carcinoma, neuroendocrine tumors, carcinogenic osteomalacia, sarcoma, CUP (cancer of unknown primary), thymic carcinoma, glioma, glioma, astrocytoma, cervical cancer or prostate cancer.
- FAP fibroblast activation protein
- the present invention further provides a kit, which comprises or consists of a targeted compound represented by formula (I) or (II) of the present invention, a compound represented by formula (V) or (VI), a radionuclide-labeled targeted compound of the present invention, or a pharmaceutical composition of the present invention, and instructions for diagnosing a disease.
- a kit which comprises or consists of a targeted compound represented by formula (I) or (II) of the present invention, a compound represented by formula (V) or (VI), a radionuclide-labeled targeted compound of the present invention, or a pharmaceutical composition of the present invention, and instructions for diagnosing a disease.
- the FAPI-RGD compound structure provided by the present invention can synergistically target the FAP target and the integrin ⁇ v ⁇ 3 target in the tumor, and can increase the number and utilization efficiency of effective receptors in the tumor.
- the radiolabeled compound further provided based on the structure is expected to be used in the diagnosis or treatment of diseases characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 .
- FAP fibroblast activation protein
- FIG1 is a mass spectrum of compound 2 in Example 1 of the present invention.
- FIG. 2 is the H NMR spectrum of compound 2 in Example 1 of the present invention.
- FIG3 is the NMR carbon spectrum of compound 2 in Example 1 of the present invention.
- FIG4 is a mass spectrum of compound 3 in Example 1 of the present invention.
- FIG5 is a hydrogen NMR spectrum of compound 3 in Example 1 of the present invention.
- FIG6 is a mass spectrum of compound 4 in Example 1 of the present invention.
- FIG. 7 is a hydrogen NMR spectrum of compound 4 in Example 1 of the present invention.
- FIG8 is the NMR carbon spectrum of compound 4 in Example 1 of the present invention.
- FIG9 is a mass spectrum of compound 7 in Example 1 of the present invention.
- FIG10 is the H NMR spectrum of compound 7 in Example 1 of the present invention.
- FIG11 is the NMR carbon spectrum of compound 7 in Example 1 of the present invention.
- FIG12 is a mass spectrum of compound 9 in Example 1 of the present invention.
- FIG13 is a mass spectrum of compound 10 in Example 1 of the present invention.
- FIG14 is a mass spectrum of compound 11 in Example 1 of the present invention.
- FIG15 is a mass spectrum of the compound of formula (V-1) in Example 1 of the present invention.
- FIG16 is a mass spectrum of intermediate M in Example 2 of the present invention.
- FIG. 17 is a mass spectrum of intermediate O in Example 2 of the present invention.
- FIG18 is a mass spectrum of intermediate B in Example 2 of the present invention.
- FIG19 is a mass spectrum of intermediate C in Example 2 of the present invention.
- FIG20 is a mass spectrum of intermediate D in Example 2 of the present invention.
- FIG21 is a mass spectrum of intermediate E in Example 2 of the present invention.
- FIG. 22 is a mass spectrum of intermediate F in Example 2 of the present invention.
- FIG23 is a mass spectrum of intermediate G in Example 2 of the present invention.
- FIG. 24 is a mass spectrum of intermediate H in Example 2 of the present invention.
- Figure 25 is a mass spectrum of intermediate I in Example 2 of the present invention.
- FIG26 is a mass spectrum of intermediate J in Example 2 of the present invention.
- Figure 27 is a mass spectrum of intermediate Q in Example 2 of the present invention.
- Figure 28 is a mass spectrum of the compound of formula (V-14) in Example 2 of the present invention.
- FIG29 is a mass spectrum of intermediate K in Example 3 of the present invention.
- Figure 30 is the mass spectrum of the compound of formula (V-23) in Example 3 of the present invention.
- FIG31 is a mass spectrum of intermediate B1 in Example 4 of the present invention.
- FIG32 is a mass spectrum of intermediate D1 in Example 4 of the present invention.
- FIG33 is a mass spectrum of intermediate G1 in Example 4 of the present invention.
- FIG34 is a mass spectrum of intermediate H1 in Example 4 of the present invention.
- FIG35 is a mass spectrum of intermediate I1 in Example 4 of the present invention.
- FIG36 is a mass spectrum of intermediate J1 in Example 4 of the present invention.
- Figure 37 is the mass spectrum of the compound of formula (V-25) in Example 4 of the present invention.
- FIG38 is a mass spectrum of intermediate H3 in Example 6 of the present invention.
- Figure 39 is a mass spectrum of intermediate I2 in Example 6 of the present invention.
- FIG40 is a mass spectrum of intermediate O1 in Example 6 of the present invention.
- FIG41 is a mass spectrum of intermediate P1 in Example 6 of the present invention.
- Figure 42 is the mass spectrum of the compound of formula (V-30) in Example 6 of the present invention.
- Figure 43 is a mass spectrum of intermediate N2 in Example 7 of the present invention.
- Figure 44 is a mass spectrum of intermediate F3 in Example 7 of the present invention.
- Figure 45 is the mass spectrum of the compound of formula (V-35) in Example 7 of the present invention.
- FIG. 46 is a graph showing the HPLC quality control results of the 68 Ga-FAPI-RGD (V-1) compound of the present invention.
- FIG. 47 is a diagram showing the MicroPET imaging results of the 68 Ga-FAPI-RGD (V-1) compound of the present invention in HepG2-FAP tumor-bearing mice.
- FIG. 48 is a diagram showing the MicroPET imaging results of the 68 Ga-FAPI-RGD (V-1) compound of the present invention co-injected with FAPI-02 in HepG2-FAP tumor-bearing mice.
- FIG. 49 is a diagram showing the MicroPET imaging results of the 68 Ga-FAPI-RGD (V-1) compound of the present invention co-injected with RGD in HepG2-FAP tumor-bearing mice.
- Figure 50 is a statistical graph of the uptake results of tumors and important organs 30 minutes after co-injection of the 68Ga -FAPI-RGD (V-1) compound of the present invention with C (RGDfK) or FAPI-02 (the horizontal axis in the figure represents different organs, and the bar graphs from left to right in each organ correspond to the uptake of the 68Ga -labeled FAPI-RGD complex, the uptake of 68Ga -FAPI-RGD after co-injection of FAPI-02 to block FAP protein, and the uptake of 68Ga -FAPI-RGD after co-injection of RGD to block integrin).
- FIG. 51 is a graph showing the stability test results of the 68 Ga-FAPI-RGD (V-25) compound of the present invention in physiological saline.
- FIG. 52 is a graph showing the results of the cell uptake and cell binding experiments of the 68 Ga-FAPI-RGD (V-25) compound of the present invention.
- FIG. 53 is a diagram showing the MicroPET imaging results of the 68 Ga-FAPI-RGD (V-25) compound and monomers 68 Ga-FAPI-02 and 68 Ga-C (RGDfK) in the present invention in HT1080-FAP tumor-bearing mice.
- FIG. 54 is a statistical diagram showing the MicroPET imaging results and the uptake results of tumors and important organs 30 minutes after the co-injection of the 68 Ga-FAPI-RGD (V-25) compound of the present invention and C (RGDfK) or/and FAPI-02.
- FIG55 is a diagram showing the PET/CT imaging results of the 68 Ga-FAPI-RGD (V-25) compound, 18F-FDG and 68 Ga-FAPI46 of the present invention in patients with pancreatic cancer, non-small cell lung cancer, small cell lung cancer and nasopharyngeal cancer 3 hours after intravenous injection.
- FIG56 is a mass spectrum of intermediate G2 of the present invention.
- FIG57 is a mass spectrum of intermediate N1 of the present invention.
- FIG58 is a mass spectrum of intermediate P of the present invention.
- Figure 59 is a mass spectrum of the compound of formula (V-26) of the present invention.
- FIG. 60 is a SPECT imaging diagram of the 177 Lu radioactively labeled compound V-40 (ie, 177 Lu-FAPI-RGD (V-40) compound) provided by the present invention.
- the synthetic route is as follows:
- compound 4 (0.52 g, 1.0 mmol) was dissolved in a mixed solution of 10 mL of dichloromethane and trifluoroacetic acid (volume ratio 9:1), and the system was heated to room temperature for 2 h. After the reaction, the solvent was distilled off under reduced pressure and dissolved in 10 mL of N,N-dimethylformamide to obtain compound 5 for later use.
- FIG. 13 is a mass spectrum of compound 10.
- the synthetic route is as follows:
- the intermediate G was dissolved in 10 mL of acetonitrile, p-toluenesulfonic acid monohydrate (2.87 g, 15.1 mmol) was added, and the reaction was carried out at 65°C and monitored by HPLC. After the reaction was completed, the system was dried and column purified to obtain the intermediate H.
- the theoretical molecular weight was 996.4193, the measured molecular weight was 996.42947, and the mass spectrum results were consistent with the target product.
- Figure 24 is the mass spectrum of the intermediate H.
- the synthetic route is as follows:
- the intermediate J prepared according to the method of Example 2 was dissolved in 30 mL of DMF, and DIPEA (0.97 g, 7.5 mmol) and 2 eq NOTA-Bis-TBU-NHS Ester (calculated according to the intermediate J) were added.
- the reaction was carried out in an external bath at 25°C and monitored by HPLC. After the reaction was completed, the system was dried and sent to the preparation to obtain the intermediate K with a two-step yield of 25.1%.
- the theoretical molecular weight was 1756.9112
- the measured molecular weight was 1756.92282
- the mass spectrometry results were consistent with the target.
- Figure 29 is the mass spectrum of the intermediate K.
- the intermediate K was dissolved in 30 mL of TFA, reacted in an external bath at 25°C, and monitored by HPLC. After the reaction was completed, 200 mL of MTBE was added to the system for crystallization, and the mixture was allowed to stand. The supernatant was sucked out, and the remaining system was concentrated to dryness, and MTBE was used to shrink the mixture until no obvious TFA residue was left.
- the compound of formula (V-23) was prepared and purified, and the yield was 14.2%.
- the theoretical molecular weight was 1644.7860, the measured molecular weight was 1644.8104, and the mass spectrum results were consistent with the target compound.
- Figure 30 is a mass spectrum of the compound of formula (V-23).
- the synthetic route is as follows:
- intermediate B1 p-toluenesulfonic acid monohydrate (1.61 g, 8.5 mmol) and 20 mL of acetonitrile to a reaction flask, react at 65 ° C for 1 h, and evaporate to dryness under reduced pressure at 40 ° C.
- 20 mL of DMF and DIPEA (1.83 g, 14.2 mmol) stir at 25 ° C, reaction number (1), that is, deprotection of intermediate B1 to obtain intermediate C1.
- FIG32 is a mass spectrum of intermediate D1.
- FIG33 is a mass spectrum of intermediate G1.
- the synthetic route is as follows:
- the theoretical molecular weight of the target compound is 1566.72893, and the molecular weight indicated by LC-MS is 1566.74480, and the mass spectrometry result is consistent with the target compound.
- Figure 57 is the mass spectrum of intermediate N1.
- the synthetic route is as follows:
- Fmoc-PEG4-CH 2 CH 2 COOH i.e., compound Cmpd1, 1.46 g, 3.0 mmol
- DCC 0.68 g, 3.3 mmol
- HOSu 0.38 g, 3.3 mmol
- the mixture was filtered, and TEA (0.90 g, 9.0 mmol) was added to the filtrate.
- Cyclo (RGDfK) i.e., compound Cmpd2, 2.23 g, 3.6 mmol was added, and the mixture was reacted at room temperature for 3 hours.
- the reaction mixture was spin-dried and dissolved in 25% DEA/THF.
- Boc-Glu-OH (0.4 g, 2.0 mmol) was dissolved in DMF, and then DCC (0.45 g, 2.2 mmol) and HOSu (0.25 g, 2.2 mmol) were added, and the mixture was reacted at room temperature for 6 hours. The mixture was filtered, and TEA (0.60 g, 6.0 mmol) was added to the filtrate. Cyclo (RGDfK) -PEG 4 (i.e., intermediate Cmpd3, 2.61 g, 2.4 mmol) was added, and the mixture was reacted at room temperature for 3 hours. The reaction solution was spin-dried and then dissolved in TFA.
- the mixture was reacted at room temperature for 10 minutes, and the mixture was added to 10 times the volume of ether. A large amount of solid was precipitated, and the crude product 2 (RGDfK) -PEG4-Glu was filtered to obtain the purified (RGDfK) 2 -PEG 4 -Glu.
- the eluting solvent was (liquid A: 0.1% TFA in H2O; liquid B: acetonitrile).
- the purified (RGDfK) 2 -PEG 4 -Glu was adjusted to a neutral pH with TEA, and then subjected to a reverse phase preparation liquid phase, and freeze-dried to obtain the finished product (RGDfK) 2 -PEG 4 -Glu.
- the intermediate O1 was dissolved in 5 mL of DMF, HATU (0.076 g, 0.2 mmol) was added, and the mixture was stirred at room temperature for 1 h to obtain system 1; DIPEA (0.090 g, 0.7 mmol) and (RGDfK) 2 -PEG 4 -Glu (0.24 g, 0.13 mmol) were dissolved in 5 mL of DMSO to obtain system 2; after system 1 was added to system 2, the mixture was stirred at 28°C and monitored by HPLC.
- the intermediate P1 was dissolved in 5 mL of TFA, reacted in an external bath at 25°C, and monitored by HPLC. After the reaction was completed, 25 mL of MTBE was added to the system for crystallization, and the system was allowed to stand. The supernatant was aspirated, and the remaining system was banded with MTBE until no obvious TFA residue was left. The system was sent for preparation and purification to obtain V-30 with a yield of 32.13%. The theoretical molecular weight was 2759.3919, the measured molecular weight was 2759.40972, and the mass spectrometry results were consistent with the target product.
- Figure 42 is the mass spectrum of V-30.
- the synthetic route is as follows:
- the intermediate F3 was dissolved in 20 mL of TFA, reacted in an external bath at 25°C, and monitored by HPLC. After the reaction was completed, 50 mL of MTBE was added to the system for crystallization, and the system was allowed to stand. The supernatant was poured out, and the remaining system was shrunk with MTBE until there was no obvious TFA residue in the system, and then sent for preparation and purification to obtain the compound of formula (V-35) with a yield of 2.89%.
- the theoretical molecular weight was 2658.3442, the measured molecular weight was 2658.36508, and the mass spectrum results were consistent with the target product.
- Figure 45 is a mass spectrum of the compound of formula (V-35).
- the synthetic route is as follows:
- V-22 compound, (V-27) compound, (V-28) compound, (V-29) compound, (V-31) compound, (V-32) compound, (V-33) compound, (V-34) compound, (V-36) compound, (V-37) compound, (V-38) compound, (V-39) compound, (VI-1) compound, (VI-2) compound, (VI-3) compound, (VI-4) compound, (VI-5) compound, (VI-6) compound, (VI-7) compound, and (VI-8) compound.
- Example 134 General method for preparing radionuclide labels
- This example uses the compound of formula (V-1) as an example to illustrate the general preparation method (wet method) of radioactive nuclide label (using Ga-68 as an example): about 18.5-1850 megabecquerel (MBq) 68 GaCl 3 hydrochloric acid solution (eluted from a germanium gallium generator) is added to a centrifuge tube containing 0.5 mL of acetic acid-acetate solution (1.0 g/L) of the compound of formula (V-1) prepared in Example 1, and the mixture is placed at 37°C for 20 minutes. Take a C 18 separation column and first use Slowly elute with 10 mL of anhydrous ethanol, and then elute with 10 mL of water.
- This example uses the compound of formula (V-1) as an example to illustrate the general preparation method (lyophilization method) of the radionuclide label (using Ga-68 as an example): about 18.5 to 1850 megabecquerel (MBq) 68 GaCl 3 hydrochloric acid solution (eluted from a germanium gallium generator) is added to the lyophilized drug box containing the compound of formula (V-1), mixed and reacted at 37°C for 20 minutes. Take a C18 separation column, first slowly elute with 10 mL of anhydrous ethanol, and then elute with 10 mL of water.
- the above-mentioned general labeling method is used to label other radionuclide-labeled compounds provided by the present invention, such as using 68 Ga to label the compound of formula (V-2), the compound of formula (V-3), the compound of formula (V-4), the compound of formula (V-5), the compound of formula (V-6), the compound of formula (V-7), the compound of formula (V-8), the compound of formula (V-9), the compound of formula (V-10), the compound of formula (V-11), the compound of formula (V-12), the compound of formula (V-13), the compound of formula (V-14), the compound of formula (V-16), the compound of formula (V-17), the compound of formula (V-18), the compound of formula (V-19), the compound of formula (V-20), the compound of formula (V-21), the compound of formula (V-22), the compound of formula (V-23), the compound of formula (V-25), the compound of formula (V-26) Compound, compound of formula (V-27), compound of formula (V-28), compound of formula (V-29), compound
- radioactive nuclide-labeled compounds provided by the present invention such as the compound of formula (V-1), the compound of formula (V-2), the compound of formula (V-3), the compound of formula (V-4), the compound of formula (V-5), the compound of formula (V-6), the compound of formula (V-7), the compound of formula (V-8), the compound of formula (V-9), the compound of formula (V-10), the compound of formula (V-11), the compound of formula (V-12), the compound of formula (V-13), the compound of formula (V-14), the compound of formula (V-16), the compound of formula (V-17), the compound of formula (V-18), the compound of formula (V-19), the compound of formula (V-20), the compound of formula (V-21), the compound of formula (V-22) Compound (V-23), compound (V-25), compound (V-26), compound (V-27), compound (V-28), compound (V-29), compound (V-30), compound (V-31), compound (V-32), compound (V-33), compound (V-34),
- the radioactive nuclide-labeled compound provided by the present invention can also be labeled with reference to other labeling methods provided by the prior art (including but not limited to the method provided by the present invention), and the radioactive nuclides include but are not limited to: 18 F, 51 Cr, 64 Cu, 67 Cu, 67 Ga, 68 Ga, 89 Zr, 111 In, 99 mTc, 186 Re, 188 Re, 139 La, 140 La, 175 Yb, 153 Sm, 166 Ho, 86 Y, 90 Y, 149 Pm, 165 Dy, 169 Er, 177 Lu, 47 Sc, 142 Pr, 159 Gd, 212 Bi, 213 Bi, 72 As, 72 Se, 97 Ru, 109 Pd, 105 Rh, 101 mRh, 128 Ba, 123 I , 124 I, 131 I, 197 Hg, 211 At, 151 Eu, 153 Eu, 169 Eu, 201 Tl, 203 Pb, 212 Pb,
- the HPLC system is as follows: SHIMADZULC-20A; C18 column (YMC, 3 ⁇ m, 4.6 ⁇ 150mm) is used for analysis.
- the detection wavelength is 254nm
- the flow rate is 1mL/min
- the elution gradient is: 0-3 minutes: 10% acetonitrile 0 and 90% water (50mM ammonium acetate) remain unchanged; 3-16 minutes: increase to 90% acetonitrile and 10% water (50mM ammonium acetate); 16-18min: maintain 90% acetonitrile and 10% water (50mM ammonium acetate); 18-20min: reduce to 10% acetonitrile and 90% water (50mM ammonium acetate); 20-22min: maintain 10% acetonitrile and 90% water (50mM ammonium acetate),
- the HPLC quality control results of 68 Ga-FAPI-RGD (V-1) are shown in Figure 46.
- test results are shown in FIG. 51 , which show that after incubation in physiological saline, the 68 Ga-FAPI-RGD (V-25) compound showed no obvious decomposition, and the radiochemical purity was greater than 99%, indicating that the 68 Ga-FAPI-RGD (V-25) prepared by the present invention has excellent stability.
- the cell uptake experiment of 68 Ga-FAPI-RGD (V-25) compound was carried out in HT1080-FAP tumor cells, and the test results are shown in Part A of Figure 52.
- the results showed that 68 Ga-FAPI-RGD (V-25) had rapid cell uptake, and the uptake reached a maximum at 30 minutes of incubation and remained at a similar uptake level for up to 2 hours.
- this experiment also used "FAPI-02", “C(RGDfK)” and “FAPI-RGD” for blocking experiments, and the test results are shown in Part A of Figure 52.
- the results showed that the cellular uptake of 68 Ga-FAPI-RGD(V-25) could be partially inhibited by C(RGDfK) or FAPI-02, and could be completely blocked by FAPI-RGD (see Part A of Figure 52).
- mice randomly divided into groups were injected with 7.4 MBq of 68 Ga-FAPI-RGD (V-25) compound, 68 Ga-FAPI-02 and 68 Ga-C (RGDfK) via tail vein, and then, under isoflurane anesthesia, MicroPET imaging was performed at 0 to 240 min after administration in the 68 Ga-FAPI-RGD (V-25) group, and at 0 to 120 min after administration in the other groups, respectively. The results are shown in Figure 53.
- the three uptakes in each group correspond to 0.5h, 1h and 2h after injection from left to right.
- FIG53 shows that at the time point of image acquisition, the tumor is clearly visible, and the tumor uptake of 68 Ga-FAPI-RGD (V-25) is higher than that of 68 Ga-FAPI-02 and 68 Ga-C (RGDfK).
- the four images of A correspond from left to right to the images obtained by single injection of 68 Ga-FAPI-RGD (V-25), co-injection of 68 Ga-FAPI-RGD (V-25) and C (RGDfK), co-injection of 68 Ga-FAPI-RGD (V-25) and FAPI-02, and co-injection of 68 Ga-FAPI-RGD (V-25) and C (RGDfK) and FAPI-02; B and C respectively reflect the uptake of 68 Ga-FAPI-RGD (V-25) and target/non-target ratios of various organs or tissues (blood, liver, kidney, tumor and muscle) of mice after injection with the above four different injection methods.
- each organ or tissue of B and C correspond from left to right to the four injection methods in A.
- co-injection of RGD or FAPI-02 with 68 Ga-FAPI-RGD (V-25) can reduce the tumor's uptake of 68 Ga-FAPI-RGD (V-25), and co-injection of RGD+FAPI-02 with 68 Ga-FAPI-RGD (V-25) further reduces the tumor's uptake of 68 Ga-FAPI-RGD (V-25).
- Blocking experiments confirm that 68 Ga-FAPI-RGD (V-25) can achieve tumor-specific targeting in vivo by binding to integrins and FAP proteins.
- the subjects were divided into one patient with pancreatic cancer, one patient with non-small cell lung cancer, one patient with small cell lung cancer, and one patient with nasopharyngeal carcinoma.
- the dose of intravenous 68 Ga-FAPI-RGD (V-25) (1.8-2.2 MBq [0.05-0.06 mCi]/kg) was calculated according to the weight of the subjects.
- Three hours after intravenous injection data were acquired using a hybrid PET/CT scanner (Discovery MI, GE Healthcare, Milwaukee, WI, USA), and the imaging results are shown in Figure 55.
- the maximum standard uptake value (SUV max ) was automatically calculated using the region of interest (ROI) drawn on the transaxial image.
- the SUV max of dual-targeted 68 Ga-FAPI-RGD (V-25) in different types of tumors was higher than that of single-targeted FAP protein 68 Ga-FAPI-46, with an increase of about 30-50%, confirming that the dual-targeted design can increase the number and utilization efficiency of effective receptors in tumors and thus increase tumor uptake.
- the compound V-40 prepared in Example 8 was radiolabeled with 177 Lu using conventional techniques in the art to obtain a 177 Lu-FAPI-RGD (V-40) compound.
- a SPECT imaging experiment was performed to observe the distribution of the tracer in the tumor mice.
- 37 MBq of the 177 Lu-FAPI-RGD (V-40) compound was injected into the U87MG tumor mice.
- the U87MG tumor mice were anesthetized and placed on a SPECT scanner to perform static SPECT scans on the mice. The results are shown in FIG60.
- the 177 Lu-FAPI-RGD (V-40) compound showed obvious tumor uptake in U87MG tumor mice 1 hour after injection, and was significantly higher than the uptake of all organs except the bladder. As the time after injection increased, the tumor uptake increased and remained high until 96 hours, while the uptake of the bladder and other organs gradually decreased, proving the excellent tumor uptake and retention of the probe, and it has great potential for the treatment of glioma tumors.
- Embodiment 138 Other embodiments
- the present invention also verifies the 68 Ga-FAPI-RGD (V-2) compound (i.e., the 68 Ga-labeled complex of the compound of formula (2), the same below), the 68 Ga-FAPI-RGD (V-3) compound, the 68 Ga-FAPI-RGD (V-4) compound, the 68 Ga-FAPI-RGD (V-5) compound, the 68 Ga-FAPI-RGD (V-6) compound, the 68 Ga-FAPI-RGD (V-7) compound, the 68 Ga-FAPI-RGD (V-8) compound, the 68 Ga-FAPI-RGD (V-9) compound, the 68 Ga-FAPI-RGD (V-10) compound, the 68 Ga-FAPI-RGD (V-11) compound, the 68 Ga-FAPI-RGD (V-12) compound, the 68 Ga-FAPI-RGD (V-13) compound, the 68 Ga-FAPI-RGD (V-14) compound, and the 68 Ga-FAPI-RGD(V-16)
- the present invention further verifies the uptake and blocking experiments and affinity experiments of the above-mentioned FAPI-RGD radioactive markers.
- experiments (2) and (3) of Example 136 see experiments (2) and (3) of Example 136.
- the experimental results show that the FAPI-RGD radioactive markers provided by the present invention can exhibit rapid cellular uptake in the corresponding cell models, and the corresponding cellular uptake can be blocked by the corresponding monomeric compounds/dimeric compounds; in addition, the FAPI-RGD radioactive markers provided by the present invention can also exhibit similar affinity to the corresponding receptors FAP protein and integrin ⁇ v ⁇ 3 .
- the present invention further verifies the MicroPET imaging of the above-mentioned FAPI-RGD radioactive marker in tumor-bearing mice.
- experiment (4) of Example 136 The experimental groups were subjected to MicroPET imaging at 0 to 240 minutes after administration. The results showed that in the MicroPET maximum density projection images of the animal model at different times after intravenous injection, the tumor was clearly visible at the time point of imaging acquisition, and the tumor uptake of the experimental group (i.e., the FAPI-RGD radioactive marker provided by the present invention) was higher than the tumor uptake of the corresponding monomer.
- the FAPI-RGD dual-targeting structure has a high affinity for both the FAP target and the integrin ⁇ v ⁇ 3 target, can synergistically target the FAP target and the integrin ⁇ v ⁇ 3 target in the tumor, and exhibits excellent metabolic kinetics, high tumor uptake and tumor retention time, and is expected to be applied to the diagnosis or treatment of diseases characterized by overexpression of fibroblast activation protein (FAP) and/or integrin ⁇ v ⁇ 3 .
- FAP fibroblast activation protein
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Abstract
Description
Claims (17)
- 一种双重靶向化合物,其特征在于,所述的双重靶向化合物包含FAP和整合素αvβ3的特异性结合配体结构,且所述的双重靶向化合物结构式如式(I)或式(II)所示:
其中:R1、R2、R3、R4可独立地选自H或F,且所述的R1、R2、R3、R4可以相同或不同;Z、Q、V和U为相同或不同的连接结构,分别独立地选自-NH-、 或者基于-(CH2)n-的替换结构;Z1为当Z、Q、V和U为基于-(CH2)n-的替换结构时,其中的n是0至30的整数,其中每个-CH2-单独地用或不用-O-、-NH-、-(CO)-、-NH-(CO)-、-CH(NH2)-或-(CO)-NH-替换,替换的条件是没有两个相邻的-CH2-基团被替换;A是与整合素αvβ3特异性结合的配体结构,其结构如式(III)或式(IV)所示:
所述的式(III)中的R5选自H或OH;所述的式(IV)中的R5和R6相同或不同,均独立的选自H或OH;M和P为基于-(CH2)n-的替换结构时,其中的n是0至30的整数,其中每个-CH2-单独地用或不用-O-、-NH-、-(CO)-、-NH-(CO)-、-CH(NH2)-或-(CO)-NH-替换,替换的条件是没有两个相邻的-CH2-基团被替换;G选自或者 - 根据权利要求1所述的双重靶向化合物,其特征在于,所述的式(I)或式(II)中的Z为-NH-CH2-(CH2-O-CH2)2-CH2-(CO)-、-NH-CH2-(CH2-O-CH2)3-CH2-(CO)-、-NH-CH2-(CH2-O-CH2)4-CH2-(CO)-、
- 根据权利要求1-2任一项所述的双重靶向化合物,其特征在于,所述的式(I)或式(II)中的Q为
- 根据权利要求1-3任一项所述的双重靶向化合物,其特征在于,所述的式(I)或式(II)中的V为-NH-CH2-(CH2-O-CH2)2-CH2-(CO)-、-NH-CH2-(CH2-O-CH2)3-CH2-(CO)-、-NH-CH2-(CH2-O-CH2)4-CH2-(CO)-或-(CH2)0-。
- 根据权利要求1-4任一项所述的双重靶向化合物,其特征在于,所述的式(I)或式(II)中的U为-NH-或者
- 根据权利要求1-5任一项所述的双重靶向化合物,其特征在于,所述的式(II)中的Z1为
- 一种可被放射性核素标记的双重靶向化合物,它是权利要求1-6任一项所述的式(I)或式(II) 中Z、Q或V任一结构中的氨基连接核素螯合基团构成的,其通式如下式(V)或(VI)所示:
其中,W是带有核素螯合基团的片段,来自1,4,7,10-四氮杂环十二烷-N,N',N,N'-四乙酸(DOTA)、乙二胺四乙酸(EDTA)、1,4,7-三氮杂环壬烷-1,4,7-三乙酸(NOTA)、三亚乙基四胺(TETA)、亚氨基二乙酸、二亚乙基三胺-N,N,N',N',N”-五乙酸(DTPA)、双-(羧甲基咪唑)甘氨酸或6-肼基吡啶-3-羧酸(HYNIC)中的任意一种;或者W是以下任意一种结构:
上述结构中的D是基于-(CH2)p-的替换结构,其中的p是0至30的整数,每个-CH2-单独地用或不用-O-、-NH-、-(CO)-、-NH-(CO)-、-CH(NH2)-或-(CO)-NH-替换,替换的条件是没有两个相邻的-CH2-基团被替换。 - 根据权利要求7所述的双重靶向化合物,其特征在于:所述的式(V)化合物结构是以下式(V-1)至式(V-40)所示的任意一种:
或者
- 根据权利要求7所述的双重靶向化合物,其特征在于:所述的式(VI)化合物结构是以下式(VI-1)至式(VI-8)所示的任意一种:
- 一种放射性核素标记的双重靶向化合物,它是权利要求7-9任一项所述的双重靶向化合物标记了放射性核素得到的;优选的,所述的放射性核素选自发射α射线的同位素、发射β射线的同位素、发射γ射线的同位素、发射俄歇电子的同位素或发射X射线的同位素;更优选的,所述的放射性核素选自18F、51Cr、64Cu、67Cu、67Ga、68Ga、89Zr、111In、99mTc、186Re、188Re、139La、140La、175Yb、153Sm、166Ho、86Y、90Y、149Pm、165Dy、169Er、177Lu、47Sc、142Pr、159Gd、212Bi、213Bi、72As、72Se、97Ru、109Pd、105Rh、101mRh、119Sb、128Ba、123I、124I、131I、197Hg、211At、151Eu、153Eu、169Eu、201Tl、203Pb、212Pb、198Au、225Ac、227Th或199Ag中的任意一种;更优选的放射性核为18F、64Cu、68Ga、89Zr、90Y、111In、99mTc、177Lu、188Re或225Ac。
- 制备权利要求7-8任一项所述式(V)所示的一种可被放射性核素标记的双重靶向化合物的方法,包括:6-羟基喹啉-4-羧酸的羧基首先与甘氨酸叔丁酯的氨基发生酰胺缩合反应;然后在酰胺缩合产物羟基位置通过烷基链连接Boc保护的哌嗪基;酸性条件下脱去Boc和叔丁基保护基,接着在哌嗪环引入Boc保护基;接着与(S)-吡咯烷-2-甲腈盐酸盐或(S)-4,4-二氟吡咯烷-2-甲腈盐酸盐发生酰胺缩合反应;脱除Boc保护基后与N-Boc-3-[2-(2-氨基乙氧基)乙氧基]丙酸发生缩合反应;接着脱去Boc保护基,依次与丙酸马来酰亚胺、带保护的半胱氨酸反应,或者接着与带保护的谷氨酸或赖氨酸反应;最后通过活化酯反应引入RGD(c(RGDyK)、c(RGDfK)或者带有PEG短链的c(RGDyK)/c(RGDfK)),得到双重靶向化合物;最后双重靶向化合物与核素螯合剂反应,得到一种可被放射性核素标记的双重靶向化合物。
- 制备权利要求10所述放射性核素标记的双重靶向化合物的方法,包括:6-羟基喹啉-4-羧酸的羧基首先与甘氨酸叔丁酯的氨基发生酰胺缩合反应;然后在酰胺缩合产物羟基位置通过烷基链连接Boc保护的哌嗪基;酸性条件下脱去Boc和叔丁基保护基,接着在哌嗪环引入Boc保护基;接着与(S)-吡咯烷-2-甲腈盐酸盐或(S)-4,4-二氟吡咯烷-2-甲腈盐酸盐发生酰胺缩合反应;脱除Boc保护基后与N-Boc-3-[2-(2-氨基乙氧基)乙氧基]丙酸发生缩合反应;接着脱去Boc保护基,依次与丙酸马来酰亚胺、带保护的半胱氨酸反应,或者接着与带保护的谷氨酸或赖氨酸反应;然后通过活化酯反应引入RGD(c(RGDyK)、c(RGDfK)或者带有PEG短链的c(RGDyK)/c(RGDfK)),得到双重靶向化合物;双重靶向化合物与核素螯合剂反应,得到可被放射性核素标记的双重靶向化合物;所得的可被放射性核素标记的双重靶向化合物与含放射性核素的化合物按照现有的湿法标记方法或冻干法标记法反应,即可制备得到所述的放射性核素标记的靶向化合物。
- 一种药物组合物,其特征在于:包含权利要求1-6所述的双重靶向化合物、权利要求7-9任一项所述的可被放射性核素标记的双重靶向化合物、权利要求10所述的放射性核素标记的双重靶向化合物、或它们在药学上可接受的任意互变异构体、外消旋体、水合物、溶剂化物或盐。
- 一种药物组合物,其特征在于:由药学上可接受的任意载体和/或赋形剂与权利要求1-6任一项所述的双重靶向化合物、权利要求7-9任一项所述的可被放射性核素标记的双重靶向化合物、权利要求10所述的放射性核素标记的双重靶向化合物、或它们在药学上可接受的任意互变异构体、外消旋体、水合物、溶剂化物或盐组成。
- 权利要求1-6任一项所述的双重靶向化合物、权利要求7-9任一项所述的可被放射性核素标记的双重靶向化合物、权利要求10所述的放射性核素标记的双重靶向化合物、或它们在药学上可接受的任意互变异构体、外消旋体、水合物、溶剂化物或盐、或权利要求13-14任一项所述的药物组合物在制备用于诊断或治疗动物或人类个体的以成纤维细胞激活蛋白(FAP)和/或整合素αvβ3过度表达为特征的疾病的药物 中的应用。
- 根据权利要求15所述的应用,其特征在于:所述的以成纤维细胞激活蛋白(FAP)和/或整合素αvβ3过度表达为特征的疾病包括但不限于:癌症、慢性炎症、动脉粥样硬化、纤维化、组织重塑和瘢痕病;优选地,所述的癌症进一步选自乳腺癌、胰腺癌、小肠癌、结肠癌、直肠癌、肺癌、头颈癌、卵巢癌、肝细胞癌、食道癌、下咽癌、鼻咽癌、喉癌、骨髓瘤细胞、膀胱癌、胆管细胞癌、透明细胞肾癌、神经内分泌肿瘤、致癌性骨软化症、肉瘤、CUP(原发性未知癌)、胸腺癌、胶质瘤、神经胶质瘤、星形细胞瘤、子宫颈癌或前列腺癌。
- 一种试剂盒,其包含或组成为:①权利要求1-6任一项所述的双重靶向化合物、权利要求7-9任一项所述的可被放射性核素标记的双重靶向化合物、权利要求10所述的放射性核素标记的双重靶向化合物、或它们在药学上可接受的任意互变异构体、外消旋体、水合物、溶剂化物或盐、或权利要求13-14任一项所述的药物组合物;②用于诊断疾病的说明书。
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