p. 560 - 562
(1989)methyl 2-amino-7-(N-t-butoxycarbonyl)pyrrolo<2,3-d>pyrimidin-4-one-5-carboxylate
methyl 2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidine-5-carboxylate
2-deoxy-3,5-di-O-p-toluoyl-α-D-erythro-pentofuranosyl chloride
2-Amino-4-chloro-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylic acid methyl ester