应用化学 ›› 2011, Vol. 28 ›› Issue (08): 892-896.DOI: 10.3724/SP.J.1095.2011.00686

• 研究论文 • 上一篇    下一篇

正电子发射显像剂O-(2-[18F]氟乙基)-L-酪氨酸的新型前体的合成

刘春艳1,2,姜申德1*   

  1. (1.天津大学药物科学技术学院 天津 300072;2.河北联合大学药学系 唐山 063000)
  • 收稿日期:2010-11-18 修回日期:2010-12-21 出版日期:2011-08-10 发布日期:2011-08-10
  • 通讯作者: 姜申德,教授; Tel/Fax:022-27892860; E-mail:jianggroup@tju.edu.cn; 研究方向:新药的设计与合成

Synthesis of Precursors for O-(2-[18F]fluoroethyl)-L-tyrosine Used in Positron Emission Tomography

LIU Chunyan1,2, JIANG Shende1*   

  1. (1.School of Pharmaceutical Science and Technology,Tianjin University,Tianjin 300072;
    2.Department of Pharmacy,Hebei United University,Tangshan 063000)
  • Received:2010-11-18 Revised:2010-12-21 Published:2011-08-10 Online:2011-08-10

摘要:

设计合成了5种新型正电子发射断层显像剂[O-(2-[18F]氟乙基)-L-酪氨酸的前体化合物:N-叔丁氧羰基-O-(2-甲磺酰/对硝基苯磺酰)-氧乙基-L-酪氨酸甲酯(9a,11a)和N-叔丁氧羰基-O-(2-甲磺酰/对甲苯磺酰/对硝基苯磺酰)-氧乙基-L-酪氨酸叔丁酯(9b,10b,11b)。 这些化合物以L-酪氨酸为原料,先与甲醇发生酯化反应或与乙酸叔丁酯进行酯交换,再用叔丁氧羰基保护氨基,最后以碳酸钾为碱、18-冠-6为相转移催化剂与乙二醇的磺酸酯在丙酮溶液中加热回流形成目标化合物,总收率为30%~67%。

关键词: 正电子发射断层显像, L-酪氨酸, O-(2-[18F]氟乙基)-L-酪氨酸前体, 正电子发射断层成像

Abstract:

Five precursors, N-(tert-butoxycarbonyl)-O-(2-mosyloxyethyl/nosyloxyethyl)-L-tyrosine methyl ester(9a, 11a) and N-(tert-butoxycarbonyl)-O-(2-mosyloxyethyl/tosyloxyethyl/nosyloxyethyl)-L-tyrosine-tert-butyl ester(9b,10b,11b), were designed and synthesized for O-(2-[18F]fluoroethyl)-L-tyrosine([18F]FET) used in positron emission tomography(PET) for tumor imaging. These compounds were prepared by the esterification of methanol or transesterification of tert-butyl acetate with L-tyrosine, protection of the amine group with di-tert-butyl dicarbonate, and then nucleophilic substitution with glycol sulfonate in three steps with overall yields varied from 30% to 67%.

Key words: Positron Emission Tomography, L-Tyrosine, O-(2-[18F]fluoroethyl)-L-tyrosine precursor, PET imaging

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