| abstract |
PCT No. PCT/FR89/00094 Sec. 371 Date Sep. 7, 1990 Sec. 102(e) Date Sep. 7, 1990 PCT Filed Mar. 8, 1989 PCT Pub. No. WO89/08657 PCT Pub. Date Sep. 21, 1989.The invention relates to the preparation of complexes of 99m-technetium, 186-rhenium or 188-rhenium usable as radiopharmaceutical products. For this preparation, an oxidized compound of 99mTc, 186Re or 188Re, e.g. an alkali metal or ammonium perrhenate or pertechnetate, is reacted with a first ligand chosen from the group of substituted or unsubstituted, aliphatic and aromatic phosphenes and polyphosphenes and a second nitrogenous ligand constituted by an ammonium nitride or a pharmaceutically acceptable metal or by a nitrogenous compound having a >N-N< unit, such as hydrazine, a hydrazine derivative, dithiocarbazic acid and dithiocarbazic acid derivatives. The product obtained can be used as it is as a radiopharmaceutical product or can serve as an intermediate for the preparation of other radiopharmaceutical products by exchange reaction with a third ligand, a monoclonal antibody or an antibody fragment. |