The invention relates to compounds comprising a Co3+ ion and a tyrosine kinase inhibitor moiety, wherein the tyrosine kinase inhibitor moiety comprises a Co3+-chelating moiety and wherein the tyrosine kinase inhibitor moiety is a 4-anilinoquinazoline tyrosine kinase inhibitor moiety. The 4-anilinoquinazoline tyrosine kinase inhibitor moiety has the general formula B, wherein R1, R2, R3 and m are as defined herein. The compounds are useful in the treatment of hyperproliferative diseases, such as cancer.
Synthesis and characterization of rhenium and technetium-99m tricarbonyl complexes bearing the 4-[3-bromophenyl]quinazoline moiety as a biomarker for EGFR-TK imaging
performed in high yield (>90%) by ligand exchange reaction using fac-[99mTc(OH2)3(CO)3]+ as precursor. The 99mTc complex was characterized by comparative HPLC analysis using the analogous rhenium (Re) complex as reference. The Re complex was prepared by ligand exchange reaction using the fac-[ReBr3(CO)3]2− as precursor and was fully characterized by NMR and IR spectroscopies and elemental analysis. In vitro
Tumor-Targeting of EGFR Inhibitors by Hypoxia-Mediated Activation
作者:Claudia Karnthaler-Benbakka、Diana Groza、Kushtrim Kryeziu、Verena Pichler、Alexander Roller、Walter Berger、Petra Heffeter、Christian R. Kowol
DOI:10.1002/anie.201403936
日期:2014.11.17
tyrosine‐kinase inhibitors (TKIs) was a major step forward in cancer treatment. However, the therapy with TKIs is limited by strong side effects and drug resistance. The aim of this study was the design of novel epidermal growth factor receptor (EGFR) inhibitors that are specifically activated in malignant tissue. Thus, a CoIII‐based prodrug strategy for the targeted release of an EGFRinhibitor triggered
受体酪氨酸激酶抑制剂 (TKI) 的开发是癌症治疗向前迈出的重要一步。然而,TKI 的治疗受到强烈副作用和耐药性的限制。本研究的目的是设计在恶性组织中特异性激活的新型表皮生长因子受体 (EGFR) 抑制剂。因此,使用了一种基于 Co III的前药策略,用于靶向释放由实体瘤中的缺氧触发的 EGFR 抑制剂。制备了具有螯合部分的新抑制剂并测试了它们的 EGFR 抑制潜力。最有希望的候选者与 Co III偶联以及在细胞培养中测试的生物活性。事实上,证实了缺氧激活和随后的 EGFR 抑制。最后,该化合物在体内进行了测试,也显示出有效的抗癌活性。