Synthesis of 2-[(2-chloro-2′-[18F]fluoroethyl)amino]-2H-1,3,2-oxazaphosphorinane-2-oxide (18F-fluorocyclophosphamide), a potential tracer for breast tumor prognostic imaging with PET
作者:Goran Lacan、Amanda L. Kesner、Anne Gangloff、Lei Zheng、Johannes Czernin、William P. Melega、Daniel H. S. Silverman
DOI:10.1002/jlcr.954
日期:2005.8
A fluorine-18 labeled analog of the widely used chemotherapeutic agent cyclophosphamide was synthesized as a tracer for prognostic imaging with positron emission tomography. 2-[(2-Chloro-2′-[18F]fluoroethyl)amino]-2H-1,3,2-oxazaphosphorinane-2-oxide (18F-fluorocyclophosphamide), was prepared by direct halogen exchange reaction from the parent cyclophosphamide. In small-scale syntheses, radiochemical yields of up to 4.9% and specific activities of 960 Ci/mmol were achieved in a total synthesis time of 60–75 min. The [18F]-labeled cyclophosphamide analog with radioactive purity >99% and chemical purity >96% was suitable for in vivo (microPET imaging) and ex vivo studies of a murine model of human breast tumors. Copyright © 2005 John Wiley & Sons, Ltd.
合成了一种氟-18标记的广泛使用的化疗药物环磷酰胺的类似物,作为用于正电子发射断层扫描的预后成像探针。2-[(2-氯-2'-[18F]氟乙基)氨基]-2H-1,3,2-氧杂膦烷-2-氧化物(18F-氟环磷酰胺)是通过直接卤素交换反应从母体环磷酰胺制备的。在小规模合成中,放射化学产率高达4.9%,特定活度为960 Ci/mmol,总合成时间为60-75分钟。所制备的[18F]-标记环磷酰胺类似物具有>99%的放射性纯度和>96%的化学纯度,适用于小鼠模型的人类乳腺肿瘤的体内(微PET成像)和体外研究。版权所有 © 2005 John Wiley & Sons, Ltd.