| 摘要 |
Compounds of general formula (I):
in which: R 1 is hydrogen, C 1 -C 20 alkyl, C 3 -C 10 cycloalkyl, C 4 -C 20 cycloalkylalkyl, aryl, arylalkyl, or two R 1 , taken together, form a straight or cyclic C 2 -C 10 alkylene group or an ortho disubstituted arylene; R 2 is hydrogen, C 1 -C 20 alkyl, C 3 -C 10 cycloalkyl, C 4 -C 20 cycloalkylalkyl, aryl or arylalkyl optionally substituted with functional groups which allow conjugation with a suitable molecule able to interact with physiological systems; R 3 , R 4 and R 5 are hydrogen, C 1 -C 20 alkyl, C 3 -C 10 cycloalkyl, C 4 -C 20 cycloalkylalkyl, aryl, arylalkyl; FG are carboxy, -PO 3 H 2 or -RP(O)OH groups, wherein R is hydrogen, C 1 -C 20 alkyl, C 3 -C 10 cycloalkyl, C 4 -C 20 cycloalkylalkyl, aryl, arylalkyl; and their chelates with bi-trivalent ions of the metal elements having atomic number ranging between 20 and 31, 39, 42, 43, 44, 49, and between 57 and 83, and radioisotopes chosen among 203 Pb, 67 Ga, 68 Ga, 72 As, 111 In, 113 In, 90 Y, 97 Ru, 62 Cu, 64 Cu, 52 Fe, 52m Mn, 140 La, 175 Yb, 153 Sm, 166 Ho, 149 Pm, 177 Lu, 142 Pr, 159 Gd, 212 Bi, 47 Sc, 149 Pm, 67 Cu, 111 Ag, 199 Au, 161 Tb and 51 Cr as well as the salts thereof with physiologically compatible bases or acids. |
