Synthesis and Evaluation of Novel Radioiodinated Benzamides for Malignant Melanoma
摘要:
The imaging potential of a series of [I-123]benzamides was studied in mice bearing B16F0 melanoma tumors. Compound [I-123]25 exhibited tumor uptake > 8 %ID/g at 1 h, while that of [I-123]14d and [I-123]25 reached a maximum of 9-12 %ID/g at 6 h. Standardized uptake values of [I-123]14d were higher than 100 between 24 and 72 h after injection. In haloperidol treated animals, the tumor uptake of [I-123]14d was not significantly different to controls, while significant reduction of [I-123]25 uptake was observed, supporting that [I-123]14d uptake relates to melanin interaction, whereas part of the mechanism of [I-123]25 uptake is related to its sigma(1)-receptor affinity. Benzamides 14d and 25, which display rapid and high tumor uptake, appear to be promising imaging agents for melanoma detection, while 14d, which displays a long lasting and high melanoma/nontarget ratio, is more suitable for evaluation as a potential radiotherapeutic.
Synthesis and Evaluation of Novel Radioiodinated Benzamides for Malignant Melanoma
摘要:
The imaging potential of a series of [I-123]benzamides was studied in mice bearing B16F0 melanoma tumors. Compound [I-123]25 exhibited tumor uptake > 8 %ID/g at 1 h, while that of [I-123]14d and [I-123]25 reached a maximum of 9-12 %ID/g at 6 h. Standardized uptake values of [I-123]14d were higher than 100 between 24 and 72 h after injection. In haloperidol treated animals, the tumor uptake of [I-123]14d was not significantly different to controls, while significant reduction of [I-123]25 uptake was observed, supporting that [I-123]14d uptake relates to melanin interaction, whereas part of the mechanism of [I-123]25 uptake is related to its sigma(1)-receptor affinity. Benzamides 14d and 25, which display rapid and high tumor uptake, appear to be promising imaging agents for melanoma detection, while 14d, which displays a long lasting and high melanoma/nontarget ratio, is more suitable for evaluation as a potential radiotherapeutic.
[EN] NICOTINAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE NICOTINAMIDE
申请人:AUSTRALIAN NUCLEAR SCIENCE TEC
公开号:WO2009129573A1
公开(公告)日:2009-10-29
A compound comprising a pyridine carboxamide structure, for use in imaging or treating melanoma, is described. An aromatic ring in the structure is substituted with a radiohalogen atom and the substitution on the amide nitrogen atom is such that the compound binds to melanin.
A compound comprising a pyridine carboxamide structure, for use in imaging or treating melanoma, is described. An aromatic ring in the structure is substituted with a radiohalogen atom and the substitution on the amide nitrogen atom is such that the compound binds to melanin.
AMINOTHIAZOLE DERIVATIVES, DRUG CONTAINING THE SAME AND INTERMEDIATE IN THE PRODUCTION OF THE COMPOUNDS
申请人:ZERIA PHARMACEUTICAL CO., LTD.
公开号:EP0870765A1
公开(公告)日:1998-10-14
The present invention relates to an aminothiazole derivative represented by the following formula (I):
wherein R1, R2 and R3 each independently represents a hydrogen atom, a hydroxy group, a lower alkyl group, a lower alkoxy group or the like; R4 represents a hydrogen atom or a lower alkyl group; R5 represents a hydrogen atom, a halogen atom or a lower alkyl group; m stands for an integer of 0 to 4, A represents a substituted amino group, a substituted imino group, a heterocyclic group or the like; and B stands for an imino group or an oxygen atom, a medicament containing it and an intermediate for the preparation of said compound. The compound has strong restoration effects on dysmotility in the gastrointestinal tract and at the same time has high safety so that it is useful as an excellent gastroprokinetic.
Discovery of [<sup>18</sup>F]<i>N</i>-(2-(Diethylamino)ethyl)-6-fluoronicotinamide: A Melanoma Positron Emission Tomography Imaging Radiotracer with High Tumor to Body Contrast Ratio and Rapid Renal Clearance
作者:Ivan Greguric、Stephen R. Taylor、Delphine Denoyer、Patrice Ballantyne、Paula Berghofer、Peter Roselt、Tien Q. Pham、Filomena Mattner、Thomas Bourdier、Oliver C. Neels、Donna S. Dorow、Christian Loc’h、Rodney J. Hicks、Andrew Katsifis
DOI:10.1021/jm9008423
日期:2009.9.10
The high melanoma uptake and rapid body clearance displayed by our series of [I-123]liodonicotinamides prompted the development of [F-18]N-(2-(diethylamino)ethyl)-6-fluoronicotinamide ([F-18]2), a novel radiotracer for PET melanoma imaging. Significantly, unlike fluorobenzoates, [F-18]fluorine incorporation on the nicotinamide ring is one step, facile, and high yielding. [F-18]2 displayed high tumor uptake, rapid body clearance via predominantly renal excretion, and is currently being evaluated in preclinical studies for progression into clinical trials to assess the responsiveness of therapeutic agents.