Selective alkylation of pyrimidyl dianions III: no-carrier-added synthesis of [11C-methyl]-thymidine.

Abstract:

:A no-carrier-added, high specific activity synthesis of [11C-methyl]-thymidine is reported. Reaction of 3'. 5'-O-bis-(tetrahydropyramyl)-5-bromo-2'-deoxyuridine with n-butylithium produced a diamion which was alkylated with [11C]-methyl iodide, and on subsequent hydrolysis, yielded [IIC-methyl]-thymidine. The labeled compound was isolated from the by-product 2'-deoxymidine by HPLC on a reverse phase C18 semipreparative column with mean radiochemical yield of 18.8% (decay corrected) in 30-35 min and radiochemical purity >99%. This no-carrier-added synthesis can be used to produce [11C-methyl]-thymidine with mean specific activity over 1000 mCi/mumol for positron emission tomography (PET) studies.

journal_name

Nucl Med Biol

authors

Alauddin MM,Ravert HT,Musachio JL,Mathews WB,Dannals RF,Conti PS

doi

10.1016/0969-8051(95)00027-u

subject

Has Abstract

pub_date

1995-08-01 00:00:00

pages

791-4

issue

6

eissn

0969-8051

issn

1872-9614

pii

0969-8051(95)00027-U

journal_volume

22

pub_type

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