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- [5] SYNTHESIS OF 3-METHYL-6-PHENYLAMINO-SUBSTITUTED-1H-PYRAZOLO[4,3-D]PYRIMIDINE-7(6H)-ONESSYNTHESIS-STUTTGART, 1982, (01): : 70 - 71BARALDI, PGGUARNERI, MMORODER, FSIMONI, DVICENTINI, CB
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- [7] Synthesis and properties of isoViagra [1].: A 2-methyl-2H-pyrazolo[4,3-d]pyrimidin-7-one isomer of Viagra®JOURNAL OF HETEROCYCLIC CHEMISTRY, 2002, 39 (05) : 1055 - 1059El-Abadelah, MMSabri, SSKhanfar, MAYasin, HAVoelter, W
- [8] NUCLEOSIDES OF 5-METHYLMERCAPTO-6H-PYRAZOLO(4,3-D)PYRIMIDINONE-7BIOORGANICHESKAYA KHIMIYA, 1979, 5 (09): : 1361 - 1368GORYUNOVA, OVKORBUKH, IAPREOBRAZHENSKAYA, MNCHERNYSHEV, AI
- [9] THE SYNTHESIS AND TRANSFORMATIONS OF 9H-IMIDAZO[1,2-B]PYRAZOLO[4,3-D]-PYRIDAZINE AND 9H-PYRAZOLO[4,3-D]-SYM-TRIAZOLO[4,3-B]PYRIDAZINE DERIVATIVESJOURNAL OF HETEROCYCLIC CHEMISTRY, 1988, 25 (02) : 393 - 398STANOVNIK, BFURLAN, BKUPPER, MMALEZ, LSTIMAC, ATISLER, MZLICAR, M
- [10] A facile one step synthesis of 1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-onesJOURNAL OF HETEROCYCLIC CHEMISTRY, 2005, 42 (05) : 751 - 754Reddy, NRReddy, GMReddy, BSReddy, PP