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Purines, pyrimidines, and condensed systems based on them. V. Use of an N-amino group as a protective function during preparation of unsymmetrical 1,3-dialkylxanthines from 3-methylxanthine
嘌呤、嘧啶和基于它们的稠合体系。V.在由3-甲基黄嘌呤制备不对称1,3-二烷基黄嘌呤过程中N-氨基作为保护官能团的用途
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