9-[(3-[18F]-fluoro-1-hydroxy-2-propoxy)methyl]guanine ([18F]-FHPG): a potential imaging agent of viral infection and gene therapy using PET.
Nucl Med Biol
; 23(6): 787-92, 1996 Aug.
Article
en En
| MEDLINE
| ID: mdl-8940722
ABSTRACT
A no-carrier-added synthesis of 9-[(3-[18F]-fluoro-1-hydroxy-2-propoxy)methyl]-guanine ([18F]-FHPG) is reported. The 9-[(1,3-dihydroxy-2-propoxy)methyl)guanine (DHPG) was converted to 9-[N2,O-bis(methoxytrityl)-3-(tosyl)-2-propoxy-methyl]guanine by treatment with methoxytrityl chloride followed by tosylation. The tosylate was reacted with [18F]-KF in the presence of kryptofix 2.2.2. to produce the 3-fluoro-N2-O-bis-(methoxytrityl) derivative. Removal of the methoxytrityl protecting groups by acid hydrolysis produced [18F]-FHPG. The labeled product was purified by HPLC on a reverse-phase C18 column, and eluted in 9 min with a mobile phase of 5% acetonitrile in water. The radiochemical yield was 7-17%, with an average of 10% in 10 runs (corrected for decay to EOB). The radiochemical purity was > 99%, and specific activities with an average of 526 mCi/mumol were obtained. The synthesis time was 70-80 min, including HPLC purification and determination of radiochemical purity and specific activity.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Antivirales
/
Radioisótopos de Flúor
/
Ganciclovir
Idioma:
En
Revista:
Nucl Med Biol
Asunto de la revista:
BIOLOGIA
/
MEDICINA NUCLEAR
Año:
1996
Tipo del documento:
Article
País de afiliación:
Estados Unidos