作者:Peter Scheiner、Sara Arwin、Manes Eliacin、James Tu
DOI:10.1002/jhet.5570220563
日期:1985.9
1-Aminohypoxanthine (1a), a new positional isomer of guanine, has been obtained from 5-aminoimidazole-4-carboxylic acid hydrazide and triethyl orthoformate. Pyrazolo 11 and triazolo 21 analogues of 1 result from similar reactions of the corresponding o-aminoazole hydrazides. An indirect synthesis involving excess ortho-ester and hydrolysis of the resulting intermediate 6 was found most effective for