Improved synthesis of .alpha.-D-ribofuranosides via stereoselective alkylation of a dibutylstannylene derivative for ready access to the 2-substituted 2-deoxyarabinofuranosides
Preparation of [11C]-thymidine and [11C]-2′-arabino-2′-fluoro-β-5-methyl-uridine (FMAU) using a hollow fiber membrane bioreactor system
作者:Jeffrey A. Hughes、Neil G. Hartman、Michael Jay
DOI:10.1002/jlcr.2580361204
日期:1995.12
A series of hollow fiber membranes containing immobilized enzymes were prepared and used in the synthesis of 11C-labelled nucleosides. 11C-Formaldehyde was produced in an alcohol oxidase/catalase bioreactor and circulated through a thymidylate synthase bioreactor with an appropriate substrate to produce the corresponding 11C-nucleotide. These labelled nucleotides were subsequently dephosphorylated in an alkaline phosphatase bioreactor. The bioreactor approach was amenable to hot-cell conditions and yielded 11C-products in higher yield and shorter synthesis times than conventional chemical approaches.
Improved synthesis of .alpha.-D-ribofuranosides via stereoselective alkylation of a dibutylstannylene derivative for ready access to the 2-substituted 2-deoxyarabinofuranosides