In vivo imaging of sulfotransferases
AssigneeThe Regents of the University of California
InventorsJorge R. Barrio, Vladimir Kepe, Gary W. Small, Nagichettiar Satyamurthy
Life of this patent
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Abstract
Radiolabeled tracers for sulfotransferases (SULTs), their synthesis, and their use are provided. Included are substituted phenols, naphthols, coumarins, and flavones radiolabeled with 18F, 123I, 124I, 125I, or 11C. Also provided are in vivo techniques for using these and other tracers as analytical and diagnostic tools to study sulfotransferase distribution and activity, in health and disease, and to evaluate therapeutic interventions.
Claims23
A method of assessing sulfotransferase (SULT) distribution or activity in a mammal, in vivo, comprising:
- administering to the mammal a bolus of a radiolabeled tracer;
- generating radiographic data indicative of tracer uptake in the mammal by scanning the mammal using a radiographic technique;
- and
- using the radiographic data to assess SULT distribution or activity in the mammal;
- wherein the radiolabeled tracer comprises at least one compound selected from the group consisting of
- (a) phenols having the formula (1)
- where A1 is OH and each of A2-A6 is independently selected from the group of moieties denoted by “K” (defined below), provided that at least one of A2-A6 is or contains a radioisotope;
- or A1 and A3 are both OH and each of A2, A4-A6 is independently selected from the group of moieties denoted by K, provided that at least one of A2, A4-A6 is or contains a radioisotope;
- (b) naphthols having the formula (2)
- where B1 is OH and each of B2-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B2-B8 is or contains a radioisotope;
- or B2 is OH and each of B1, B3-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B1, B3-B8 is or contains a radioisotope;
- or B1 and B3 are each OH and each of B2, B4-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B4-B8 is or contains a radioisotope;
- (c) coumarins having the formula (3)
- where X and Y are, independently, O, S, or N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein
- C3 is OH and each of C1-C2, C4-C6 is independently selected from the group of moieties denoted by K;
- or
- C4 is OH and each of C1-C3, C5-C6 is independently selected from the group of moieties denoted by K;
- or
- C5 is OH and each of C1-C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C6 is OH and each of C1-C5 is independently selected from the group of moieties denoted by K;
- or
- C2 and C3═OH and each of C1, C4-C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C4═OH and each of C1, C3, C5-C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C5═OH and each of C1, C3-C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C6═OH and each of C1, C3-C5 is independently selected from the group of moieties denoted by K;
- or
- C3 and C5═OH and each of C1-C2, C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C4 and C6═OH and each of C1-C3, C5 is independently selected from the group of moieties denoted by K;
- or
- C2═C3═C5═OH and each of C1, C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C2, C4 and C6═OH and each of C1, C3, C5 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of C1-C6, X, or Y is or contains a radioisotope;
- (d) flavones having the formula (4)
- where X and Y are, independently, O, S, or N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein
- D3 is OH and each of D1-D2, D4-D6 is independently selected from the group of moieties denoted by K;
- or
- D4 is OH and each of D1-D3, D5-D6 is independently selected from the group of moieties denoted by K;
- or
- D5 is OH and each of D1-D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D6 is OH and each of D1-D5 is independently selected from the group of moieties denoted by K;
- or
- D2 and D3 are OH and each of D1, D4-D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D4 are OH and each of D1, D3, D5-D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D5 are OH and each of D1, D3-D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D6 are OH and each of D1, D3-D5 is independently selected from the group of moieties denoted by K;
- or
- D3 and D5 are OH and each of D1-D2, D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D4 and D6 are OH and each of D1-D3, D5 is independently selected from the group of moieties denoted by K;
- or
- D2, D3 and D5 are OH, and D1, D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D2, D4 and D6 are OH, and D1, D3, D5 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of D1-D6, X, or Y is or contains a radioisotope;
- (e) fused ring compounds having the formula (5)
- where Z is O, S, N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [1241]iodoalkyl, [1241]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl), CH2, or CH═CH;
- and W is N or CH;
- and wherein
- E2 is OH and each of E1, E3-E5 is independently selected from the group of moieties denoted by K;
- or
- E3 is OH and each of E1-E2, E4-E5 is independently selected from the group of moieties denoted by K;
- or
- E4 is OH and each of E1-E3, E5 is independently selected from the group of moieties denoted by K;
- or
- E5 is OH and each of E1-E4 is independently selected from the group of moieties denoted by K;
- or
- E2 and E4 are OH and each of E1-E4 is independently selected from the group of moieties denoted by K;
- or
- E3 and E5 are OH and each of E1, E2, E4, is independently selected from the group of moieties denoted by K;
- and wherein in each case at least one of E1-E5 or Z is or contains a radioisotope;
- (e′) structurally related fused ring compounds in which E1 is a substituted aryl group, said compounds having the formula 5a:
- where Z is O, S, N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl), CH2, or CH═CH;
- W is N or CH;
- and P is H, alkyl, aryl, [11C]methyl, 18F, [18F]fluoroalkyl, [18F]fluoroaryl, 123I, [123I]iodoalkyl, [123I]iodoaryl, 124I, [124I]iodoalkyl, [124I]iodoaryl,] 125I, [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein E2 is OH and each of E3-E5 is independently selected from the group of moieties denoted by K;
- or
- E3 is OH and each of E2, E4-E5 is independently selected from the group of moieties denoted by K;
- or
- E4 is OH and each of E2-E3, E5 is independently selected from the group of moieties denoted by K;
- or
- E5 is OH and each of E2-E4 is independently selected from the group of moieties denoted by K;
- or
- E2 and E4 are OH and each of E3, E5 is independently selected from the group of moieties denoted by K;
- or
- E3 and E5 are OH and each of E2, E4 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of E1-E5, I′, or Z is or contains a radioisotope;
- and wherein R′ is selected from the group consisting of H, NH—CH3, N(CH3)2 NH2, OCH3, NH—CO—CH3, F, I, CN, NO2, SO2—CH3, and radiolabeled isotopes thereof;
- (f) imidazopyridines having the formula (6):
- where F1-F5 are the same as E1-E5, and wherein at least one of F1-F5 is or contains a radioisotope;
- or
- (g) stilbenes having the formula (7):
- where W1 and W2 are, independently, alkyl, aryl, or OH;
- and wherein
- G3 is OH and each of G1-G2, G4-G10 is independently selected from the group of moieties denoted by K;
- or
- G2 and G4 are OH and each of G1, G3, G5-G10 is independently selected from the group of moieties denoted by K;
- or
- G3 and G8 are OH and each of G1-G3, G4-G7, G9-G10 is independently selected from the group of moieties denoted by K;
- or
- G2=G4=G8═OH and each of G1, G3, G5-G7, G9-G10 is independently selected from the group of moieties denoted by K;
- and wherein in each case at least one of G1-G10 is or contains a radioisotope;
- and wherein, in each of compounds (a)-(g), K is selected from the group consisting of H;
- alkyl;
- aryl;
- 18F;
- [18F]fluoroalkyl;
- [18F]fluoroaryl;
- 123I;
- [123I]iodoalkyl;
- [123I]iodoaryl;
- 124I;
- [124I]iodoalkyl;
- [124I]iodoaryl;
- 125I;
- [125I]iodoalkyl;
- [125I]iodoaryl;
- —SR1, or —NR1R2 (where R1 and R2 are independently H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl;
- [18F]fluoroaryl;
- [123I]iodoalkyl;
- [123I]iodoaryl;
- [124I]iodoalkyl;
- [124I]iodoaryl;
- [125I]iodoalkyl;
- or [125I]iodoaryl);
- —NO2;
- —CN;
- —S(═O)—R3 or —S(═O)2—R3 (where R3 is alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoaryl, [125I]iodoalkyl, [125I]iodoaryl), or —OR4, —NR4R5, (wherein R4 and R5 are independently H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124]iodoalkyl, [124]iodoaryl, [125I]iodoalkyl, or [125I]iodoaryl));
- and —OC(═O)—R6, —SC(═O)—R6, or —NH—C(═O)—R6 (where R6 is alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, or [125I]iodoaryl).
A method of evaluating therapeutic effect of an agent on a sulfotransferase in a mammal, comprising:
- (A) administering a radiolabeled tracer to a mammal;
- generating a first set of radiographic data by scanning the mammal using a radiographic technique;
- administering an actual or putative therapeutic agent to the mammal, intravenously, orally, or by other suitable mode of delivery;
- generating a second set of radiographic data by scanning the mammal using a radiographic technique;
- and
- comparing the first and second sets of radiographic data;
- or
- (B) administering an actual or putative therapeutic agent to the mammal, intravenously, orally, or by other suitable mode of delivery;
- administering a radiolabeled tracer to the mammal;
- generating a set of radiographic data by scanning the mammal using a radiographic technique;
- and
- comparing the set of radiographic data to data obtained in the absence of the agent;
- wherein in (A) and (B) the radiolabeled tracer comprises at least one compound selected from the group consisting of
- (a) phenols having the formula (1)
- where A1 is OH and each of A2-A6 is independently selected from the group of moieties denoted by “K” (defined below), provided that at least one of A2-A6 is or contains a radioisotope;
- or A1 and A3 are both OH and each of A2, A4-A6 is independently selected from the group of moieties denoted by K, provided that at least one of A2, A4-A6 is or contains a radioisotope;
- (b) naphthols having the formula (2)
- where B1 is OH and each of B2-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B2-B8 is or contains a radioisotope;
- or B2 is OH and each of B1, B3-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B1, B3-B8 is or contains a radioisotope;
- or B1 and B3 are each OH and each of B2, B4-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B4-B8 is or contains a radioisotope;
- (c) coumarins having the formula (3)
- where X and Y are, independently, O, S, or N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iiodoalkyl, [124]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein
- C3 is OH and each of C1-C2, C4-C6 is independently selected from the group of moieties denoted by K;
- or
- C4 is OH and each of C1-C3, C5-C6 is independently selected from the group of moieties denoted by K;
- or
- C5 is OH and each of C1-C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C6 is OH and each of C1-C5 is independently selected from the group of moieties denoted by K;
- or
- C2 and C3═OH and each of C1, C4-C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C4═OH and each of C1, C3, C5-C6 is independently selected from the group of moieties denoted by K;
- or C2 and C5═OH and each of C1, C3-C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C6═OH and each of C1, C3-C5 is independently selected from the group of moieties denoted by K;
- or
- C3 and C5═OH and each of C1-C2, C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C4 and C6═OH and each of C1-C3, C5 is independently selected from the group of moieties denoted by K;
- or
- C2═C3═C5═OH and each of C1, C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C2, C4 and C6═OH and each of C1, C3, C5 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of C1-C6, X, or Y is or contains a radioisotope;
- (d) flavones having the formula (4)
- where X and Y are, independently, O, S, or N—R1 (wherein R′ is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein
- D3 is OH and each of D1-D2, D4-D6 is independently selected from the group of moieties denoted by K;
- or
- D4 is OH and each of D1-D3, D5-D6 is independently selected from the group of moieties denoted by K;
- or
- D5 is OH and each of D1-D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D6 is OH and each of D1-D5 is independently selected from the group of moieties denoted by K;
- or
- D2 and D3 are OH and each of D1, D4-D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D4 are OH and each of D1, D3, D5-D6 is independently selected from the group of moieties denoted by K;
- or D2 and D5 are OH and each ofD1, D3-D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D6 are OH and each of D1, D3-D5 is independently selected from the group of moieties denoted by K;
- or
- D3 and D5 are OH and each of D1-D2, D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D4 and D6 are OH and each of D1-D3, D5 is independently selected from the group of moieties denoted by K;
- or
- D2, D3 and D5 are OH, and D1, D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D2, D4 and D6 are OH, and D1, D3, D5 is independently selected from the group of moieties denoted by K;
- (e) fused ring compounds having the formula (5)
- where Z is O, S, N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [23I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl), CH2, or CH—CH;
- and W is N or CH;
- and wherein
- E2 is OH and each of E1, E3-E5 is independently selected from the group of moieties denoted by K;
- or
- E3 is OH and each of E1-E2, E4-E5 is independently selected from the group of moieties denoted by K;
- or
- E4 is OH and each of E1-E3, E5 is independently selected from the group of moieties denoted by K;
- or
- E5 is OH and each of E1-E4 is independently selected from the group of moieties denoted by K;
- or
- E2 and E4 are OH and each of E1-E4 is independently selected from the group of moieties denoted by K;
- or
- E3 and E5 are OH and each of E1, E2, E4, is independently selected from the group of moieties denoted by K;
- and wherein in each case at least one of E1-E5 or Z is or contains a radioisotope;
- (e′) structurally related fused ring compounds in which E1 is a substituted aryl group, said compounds having the formula 5a:
- where Z is O, S, N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [[124]iodoalkyl, [124]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl), CH2, or CH═CH;
- W is N or CH;
- and I1 is H, alkyl, aryl, [11C]methyl, 18F, [18F]fluoroalkyl, [18F]fluoroaryl, 123I, [123I]iodoalkyl, [123I]iodoaryl, 124I, [124]iodoalkyl, [124]iodoaryl,] 125I, [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein E2 is OH and each of E3-E5 is independently selected from the group of moieties denoted by K;
- or
- E3 is OH and each of E2, E4-E5 is independently selected from the group of moieties denoted by K;
- or
- E4 is OH and each of E2-E3, E5 is independently selected from the group of moieties denoted by K;
- or
- E5 is OH and each of E4 is independently selected from the group of moieties denoted by K;
- or
- E2 and E4 are OH and each of E3, E5 is independently selected from the group of moieties denoted by K;
- or
- E3 and E5 are OH and each of E2, E4 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of E1-E5, I′, or Z is or contains a radioisotope;
- and wherein R′ is selected from the group consisting of H, NH—CH3, N(CH3)2, NH2, OCH3, NH—CO—CH3, F, I, CN, NO2, SO2—CH3, and radiolabeled isotopes thereof;
- (f) imidazopyridines having the formula (6):
- where F1-F5 are the same as E1-E5, and wherein at least one of F1-F5 is or contains a radioisotope;
- or
- (g) stilbenes having the formula (7):
- where W1 and W2 are, independently, alkyl, aryl, or OH;
- and wherein
- G3 is OH and each of G1-G2, G4-do is independently selected from the group of moieties denoted by K;
- or
- G2 and G4 are OH and each of G1, G3, G5-Gi0 is independently selected from the group of moieties denoted by K;
- or
- G3 and G8 are OH and each of G1-G3, G4-G7, G9-G10 is independently selected from the group of moieties denoted by K;
- or
- G2=G4=G8═OH and each of G1, G3, G5-G7, G9-G10 is independently selected from the group of moieties denoted by K;
- and wherein in each case at least one of G1-G10 is or contains a radioisotope;
- wherein in each case (a)-(g) K is selected from the group consisting of H;
- alkyl;
- aryl;
- 18F;
- [18F]fluoroalkyl;
- [18F]fluoro aryl;
- 123I;
- [123I]iodoalkyl;
- [123I]iodoaryl;
- 124I;
- [124I]iodoalkyl;
- [124I]iodoaryl;
- 125I;
- [125I]iodoalkyl;
- [125I]iodoaryl;
- —SR1, or —NR1R2 (where R1 and R2 are independently H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl;
- [18F]fluoroaryl;
- [123I]iodoalkyl;
- [123I]iodoaryl;
- [124I]iodoalkyl;
- [124I]iodoaryl;
- 125I] iodoalkyl;
- or [125I]iodoaryl);
- —NO2;
- —CN;
- —S(═O)—R3 or —S(═O)2—R3 (where R3 is alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, [125I]iodoaryl), or —OR4, —NR4R5, (wherein R4 and R5 are independently H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, or [125I]iodoaryl));
- and —OC(═O)—R6, —SC(═O)—R6, or —NH—C(═O)—R6 (where R6 is alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, or [125I]iodoaryl).
A method of monitoring sulfotransferase activity in a mammal's brain, in vivo, comprising:
- administering to a mammal a bolus of a radiolabeled tracer for a sulfotransferase, which tracer is capable of crossing the mammal's blood-brain barrier;
- and generating radiographic data indicative of tracer uptake in the mammal's brain by scanning the brain using a radiographic technique, in vivo.
A method of monitoring sulfotransferase activity in a mammal, in vivo, comprising:
- administering to a mammal a bolus of a first radiolabeled tracer;
- generating first radiographic data indicative of first tracer uptake in the mammal by scanning the mammal using a radiographic technique;
- administering to the mammal a bolus of a second radiolabeled tracer;
- generating second radiographic data indicative of second tracer uptake in the mammal by scanning the mammal using a radiographic technique;
- and
- comparing the first radiographic data to the second radiographic data.
A method of monitoring sulfotransferase activity in a mammal, in vivo, comprising:
- administering to a mammal a bolus of a first radiolabeled tracer known to be a substrate for a first sulfotransferase, but not a substrate for a second sulfotransferase;
- generating first radiographic data indicative of first tracer uptake in the mammal by scanning the mammal using a radiographic technique;
- administering to the mammal a bolus of a second radiolabeled tracer;
- generating second radiographic data indicative of second tracer uptake in the mammal by scanning the mammal using a radiographic technique;
- and
- comparing the first radiographic data to the second radiographic data.
A radiolabeled tracer for sulfotransferase, comprising at least one compound selected from the group consisting of
- (a) phenols having the formula (1)
- where A1 is OH and each of A2-A6 is independently selected from the group of moieties denoted by “K” (defined below), provided that at least one of A2-A6 is or contains a radioisotope;
- or A1 and A3 are both OH and each of A2, A4-A6 is independently selected from the group of moieties denoted by K, provided that at least one of A2, A4-A6 is or contains a radioisotope;
- (b) naphthols having the formula (2)
- where B1 is OH and each of B2-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B2-B8 is or contains a radioisotope;
- or B2 is OH and each of B1, B3-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B1, B3-B8 is or contains a radioisotope;
- or B1 and B3 are each OH and each of B2, B4-B8 is independently selected from the group of moieties denoted by K, provided that at least one of B4-B8 is or contains a radioisotope;
- (c) coumarins having the formula (3)
- where X and Y are, independently, O, S, or N—R′ (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein
- C3 is OH and each of C1-C2, C4-C6 is independently selected from the group of moieties denoted by K;
- or
- C4 is OH and each of C1-C3, C5-C6 is independently selected from the group of moieties denoted by K;
- or
- C5 is OH and each of C1-C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C6 is OH and each of C1-C5 is independently selected from the group of moieties denoted by K;
- or
- C2 and C3═OH and each of C1, C4-C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C4═OH and each of C1, C3, C5-C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C5═OH and each of C1, C3-C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C2 and C6═OH and each of C1, C3-C5 is independently selected from the group of moieties denoted by K;
- or
- C3 and C5═OH and each of C1-C2, C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C4 and C6═OH and each of C1-C3, C5 is independently selected from the group of moieties denoted by K;
- or
- C2═C3═C5═OH and each of C1, C4, C6 is independently selected from the group of moieties denoted by K;
- or
- C2, C4 and C6═OH and each of C1, C3, C5 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of C1-C6, X, or Y is or contains a radioisotope;
- (d) flavones having the formula (4)
- where X and Y are, independently, O, S, or N—R1 (wherein R1 is H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl,] [125I]iodoalkyl, or [125I]iodoaryl);
- and wherein
- D3 is OH and each of D1-D2, D4-D6 is independently selected from the group of moieties denoted by K;
- or
- D4 is OH and each of D1-D3, D5-D6 is independently selected from the group of moieties denoted by K;
- or
- D5 is OH and each of D1-D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D6 is OH and each of D1-D5 is independently selected from the group of moieties denoted by K;
- or
- D2 and D3 are OH and each of D1, D4-D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D4 are OH and each of D1, D3, D5-D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D5 are OH and each of D1, D3-D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D2 and D6 are OH and each of D1, D3-D5 is independently selected from the group of moieties denoted by K;
- or
- D3 and D5 are OH and each of D1-D2, D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D4 and D6 are OH and each of D1-D3, D5 is independently selected from the group of moieties denoted by K;
- or
- D2, D3 and D5 are OH, and D1, D4, D6 is independently selected from the group of moieties denoted by K;
- or
- D2, D4 and D6 are OH, and D1, D3, D5 is independently selected from the group of moieties denoted by K;
- wherein in each case at least one of D1-D6, X, or Y is or contains a radioisotope;
- and wherein K is selected from the group consisting of H;
- alkyl;
- aryl;
- 18F;
- [18F]fluoroalkyl;
- [18F]fluoro aryl;
- 123I;
- [123I]iodoalkyl;
- [123I]iodoaryl;
- 124I;
- [124I]iodoalkyl;
- [124I]iodoaryl;
- 125I;
- [125I]iodoalkyl;
- [125I]iodoaryl;
- —OR1, —SR1, or —NR1R2 (where R1 and R2 are independently H, alkyl, aryl, [α]methyl, [18F]fluoroalkyl;
- [18F]fluoroaryl;
- [123I]iodoalkyl;
- [123I]iodoaryl;
- [124I]iodoalkyl;
- [124I]iodoaryl;
- [125I]iodoalkyl;
- or [125I]iodoaryl);
- —NO2;
- —CN;
- —S(═O)—R3 or —S(═O)2—R3 (where R3 is alkyl, aryl, [11C]methyl, [118F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, [125I]iodoaryl), or —OR4, —NR4R5, (wherein R4 and R5 are independently H, alkyl, aryl, [11C]methyl, [18F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, or [125I]iodoaryl));
- and —OC(═O)—R6, —SC(═O)—R6, or —NH—C(═O)—R6 (where R6 is alkyl, aryl, [11C]methyl, [1F]fluoroalkyl, [18F]fluoroaryl, [123I]iodoalkyl, [123I]iodoaryl, [124I]iodoalkyl, [124I]iodoaryl, [125I]iodoalkyl, or [125I]iodoaryl).
Dependencies are inferred from the claim text.