NOVEL 4,5-DIHYDROPYRAZOLO[3,4-D]PYRIMIDIN-4-ONES AND 3,4-DIHYDROPYRAZOLO[3,4-D]-1,2,3-TRIAZIN-4-ONES

被引：0

作者：

MAQUESTIAU, A

BANNEUX, F

EYNDE, JJV

机构：

来源：

BULLETIN DES SOCIETES CHIMIQUES BELGES | 1991年 / 100卷 / 05期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

beta-benzylidene 3- and 5-amino-1-methyl-1 H-pyrazole-4-carboxhydrazides 3 and 4 readily react with orthoesters to yield the 4,5-dihydropyrazolo [3,4-d] pyrimidin-4-ones 5-8. Syntheses of 3,4-dihydropyrazolo [3,4-d]-1,2,3-triazin-4-ones 9, 10 13 and 14 were achieved by nitrosation of various 3- and 5-amino-1-methyl-1 H-pyrazole-4-carboxhydrazides.

引用

页码：401 / 406

页数：6

共 12 条

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[6] MAQUESTIAU A, 1987, TETRAHEDRON, V43, P4195
[7] SYNTHESIS OF 2-AZAINOSINE AND RELATED DERIVATIVES BY RING ANNULATION OF IMIDAZOLE NUCLEOSIDES
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[8] DRUGS AND URIC ACID
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[9] RUNDLES RW, 1963, T ASSOC AM PHYSICIAN, V76, P126
[10] 1-AMINOHYPOXANTHINE AND ANALOGS
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