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Syntheses of 3-substituted 1H-1,2,4-triazolo[4,3-a]perimidines

✍ Scribed by Kang-Chien Liu; Hsiu-Ho Chen

Publisher: John Wiley and Sons
Year: 1985
Tongue: English
Weight: 164 KB
Volume: 318
Category: Article
ISSN: 0365-6233
DOI: 10.1002/ardp.19853180515

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✦ Synopsis

In some foregoing communications"'. we reported the synthesis and anorectic activity of some thiazolo-and thiazinoperimidine derivatives. As an extension of our study in this series, we wish now to describe the method of fusing a 1,2,4-triazole component onto the perimidine nucleus. Theoretically, there are two ways to construct such a ring system leading to lH-l,2,4-triazoIo[2,3-a]and lH-1,2,4-triazolo(4,3-a]perimidines. In the first case, a selective N-amination process5) is required for the preparation of the 1,2-diaminoperimidine precursor. We have preferentially tried to prepare the compounds with the [4,3-a] ring-fused feature.

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