1009740-01-5Relevant articles and documents
PREPARATION OF 4-SUBSTITUTED 2-AMINO-BENZO[4,5]FURO [3,2-D]PYRIMIDINE DERIVATIVES
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Page/Page column 12, (2008/12/05)
The present invention is directed to a process for the preparation of a compound of formula (I), wherein R1, R2 and X have the meaning as indicated in the description and claims. Said compounds are useful as key intermediates for the preparation of the related pharmaceutically active compounds or as active compounds.