Tetrahedron Letters p. 3151 - 3154 (1992)
Update date:2022-09-26
Topics:
Shimada
Suzuki
New tricyclic heterocycles, 9H-s-triazolo[3,4-i]purin-5(6H)-ones(2, 3), were prepared from 6-methylthio-7H-purin-2(3H)-ones (5a, 5d).
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