The synthesis and conformational analysis of perhydro-1,2,4-triazines and perhydro-1,3,4-thiadiazines and a note on
β Scribed by Alan R. Katritzky; Ranjan C. Patel; David M. Read
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- French
- Weight
- 261 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
1,2,4-Triazanes and 1,3,4_thiadiazanes are previously unknown classes of compound:
we have now synthesised representatives of each (Scheme 1) by methods which utilise thiiran n and N-methylaziridine and are extensions of our previously reported' synthesis of the 1,3,4-oxadiazane ring system.
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Depending on the reaction conditions eithcr 2.6-disubstitutcd 2,3,5,6-tetrahydro-4H-1,3-thiazin-4-ones 4 or 1,6-disubstitutcd 2-thiouracils 5 are readily prepared by base-catalyzcd cyclization of N-propenoylthioureas 3. Compounds 5 could also bc obtained by Dimroth-type rearrangement of 1,3-thiazin-
To develop nonacidic, nonsteroidal anti-inflammatory agents without GI complications, a series of asymmetric triazines was synthesized and evaluated for anti-inflammatory efficacy in the carrageenan-induced pedal edema assay. Toxicity was estimated by determination of approximate LD50 values in mice