The title compound 6 was prepared from the key sugarintermediate 3-deoxy-1,
2-O-isopropylidene-alpha-D-erythro-pentofuranosylthymine (1) via five steps
. Alternatively, 6 was synthesized from the nucleoside 3'-deoxy-beta-D-eryt
hro-pentofuranosylthymine (7) in two steps. (C) 1999 Elsevier Science Ltd.
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