作者:Uwe Ackermann、Henri J. Tochon-Danguy、Kenneth Young、John I. Sachinidis、J. Gordon Chan、Andrew M. Scott
DOI:10.1002/jlcr.546
日期:2002.2
Carbon-11 labelled 4-(N-2,5-dihydroxybenzyl)amino methyl benzoate (AG957), a potential radiotracer for imaging bcr–abl receptors was synthesized. [11C]AG957 was prepared by labelling 4-aminobenzoic acid using [11C]CH3I, which affords the corresponding [11C] methyl ester in excellent yields. Subsequent condensation of the amino group with 2,5-dihydroxy-benzaldehyde formed the respective Schiff base. Reduction of this compound with NaBH3CN gave [11C]AG957 in overall decay corrected radiochemical yield of 65–75% (based on 11CH3I) with an average specific radioactivity of 40 GBq/μmol (1.1 Ci/μmol). The total synthesis time from EOB including formulation was 45 min. At physiological pH, the compound was found to be sufficiently stable for in vitro and in vivo investigations. Copyright © 2002 John Wiley & Sons, Ltd.
碳-11标记的4-(N-2,5-二羟基苄基)氨基甲基苯甲酸酯(AG957),一种用于成像bcr-abl受体的潜在放射性示踪剂,已被合成。[11C]AG957通过使用[11C]CH3I标记4-氨基苯甲酸制备,从而获得了相应的高产率的[11C]甲酯。随后,氨基与2,5-二羟基苯甲醛缩合形成相应的席夫碱。使用NaBH3CN还原此化合物,得到了总衰减校正放射性化学产率为65-75%(基于11CH3I)的[11C]AG957,平均比放射性为40 GBq/μmol(1.1 Ci/μmol)。从结束标记(EOB)到制剂的总合成时间为45分钟。在生理pH下,该化合物被发现足够稳定,适合进行体外和体内研究。版权所有 © 2002 John Wiley & Sons, Ltd.