The first radiosynthesis of [11C]AZD8931 as a new potential PET agent for imaging of EGFR, HER2 and HER3 signaling

Min Wang, Mingzhang Gao, Qi Huang Zheng

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The reference standard AZD8931{2-(4-((4-((3-chloro-2-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)oxy)piperidin-1-yl)-N-methylacetamide} (11a) was synthesized from methyl 4,5-dimethoxy-2-nitrobenzoate or ethyl 4,5-dimethoxy-2-nitrobenzoate and 2-chloro-N-methylacetamide in 11 steps with 2-5% overall chemical yield. The precursor N-desmethyl-AZD8931{2-(4-((4-((3-chloro-2-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)oxy)piperidin-1-yl)acetamide} (11b) was synthesized from methyl 4,5-dimethoxy-2-nitrobenzoate or ethyl 4,5-dimethoxy-2-nitrobenzoate and 2-bromoacetamide in 11 steps with 2-4% overall chemical yield. The target tracer [11C]AZD8931 {2-(4-((4-((3-chloro-2-fluorophenyl)amino)-7-methoxyquinazolin-6-yl)oxy)piperidin-1-yl)-N-[11C]methylacetamide} ([11C]11a) was prepared from N-desmethyl-AZD8931 (11b) with [11C]CH3OTf under basic condition (NaH) through N-[11C]methylation and isolated by HPLC combined with solid-phase extraction (SPE) in 40-50% radiochemical yield based on [11C]CO2and decay corrected to end of bombardment (EOB) with 370-1110 GBq/μmol specific activity at EOB.

Original languageEnglish (US)
Pages (from-to)4455-4459
Number of pages5
JournalBioorganic and Medicinal Chemistry Letters
Volume24
Issue number18
DOIs
StatePublished - Sep 15 2014

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Keywords

  • Cancer
  • Epidermal growth factor receptor (EGFR/ErbB/HER)
  • lzheimer's disease
  • Positron emission tomography (PET)
  • Radiosynthesis
  • [C]AZD8931

ASJC Scopus subject areas

  • Biochemistry
  • Clinical Biochemistry
  • Molecular Biology
  • Molecular Medicine
  • Organic Chemistry
  • Drug Discovery
  • Pharmaceutical Science
  • Medicine(all)

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