Synthesis and evaluation of [123I] labeled iodovinyl amino acids syn-, anti-1-amino-3-[2-iodoethenyl]-cyclobutane-1-carboxylic acid, and 1-amino-3-iodomethylene-cyclobutane-1-carboxylic acid as potential SPECT brain tumor imaging agents
作者:Weiping Yu、Larry Williams、Eugene Malveaux、Vernon M. Camp、Jeffrey J. Olson、Mark M. Goodman
DOI:10.1016/j.bmcl.2008.01.035
日期:2008.2
syn- and anti-1-amino-3-[2-iodoethenyl]-cyclobutane-1-carboxylic acid (syn-, anti-IVACBC 16, 17) and their analogue 1-amino-3-iodomethylene-cyclobutane-1-carboxylic acid (gem-IVACBC 18) were synthesized and radioiodoinated with [(123)I] in 34-43% delay-corrected yield. All these amino acids entered 9L gliosarcoma cells primarily via L-type transport in vitro with high uptake of 8-10% ID/1 x 10(6) cells
顺式和抗式 1-氨基-3-[2-碘乙烯基]-环丁烷-1-羧酸(顺式、抗式 IVACBC 16, 17)及其类似物 1-氨基-3-碘亚甲基-环丁烷-1-羧酸合成了酸 (gem-IVABC 18) 并用 [(123)I] 进行放射性碘化,延迟校正产率为 34-43%。所有这些氨基酸主要通过体外 L 型转运进入 9L 胶质肉瘤细胞,8-10% ID/1 x 10(6) 细胞高摄取。[(123)I]16、17 和 18 在 9L 神经胶质肉瘤脑肿瘤大鼠中的生物分布研究表明,肿瘤与脑的比率很高(注射后 60 分钟为 4.7-7.3:1)。在该模型中,syn-、anti-和 gem-[(123)I]IVACBC 是用于 SPECT 脑肿瘤成像的有前途的放射性示踪剂。