Synthesis and potential central nervous system stimulant activity of 5,8-methanoquinazolines and bornano-triazines fused with imidazole and pyrimidine
✍ Scribed by Shinichi Nagai; Takamasa Miyachi; Tetsu Nakane; Taisei Ueda; Yasuhiro Uozumi
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2001
- Tongue
- English
- Weight
- 32 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Starting from 3‐chloro‐5,8‐methanoquinazoline 1 and 3‐chloro‐bornano[1,2,4]triazine 7, the novel 5,8‐methanoquinazolines 5a‐b and bornano[1,2,4]triazines 10a‐b fused with imidazole and pyrimidine were prepared. None of these compounds showed any satisfactory central nervous system stimulant activities.
📜 SIMILAR VOLUMES
## Abstract 5,8‐Methanoquinazolines fused with imidazoles 4a‐4b, thiadiazoles 5–6, pyrimidines 7, 9, 11 and 12, and 1,3,5‐triazine 13 were prepared starting from (5__R__,8__S__)‐2‐amino‐8,9,9‐trimethyl‐5,6,7,8‐tetrahydro‐5,8‐methanoquinazoline 3. Most compounds possessed central nervous system stim
Synthesis and Central Nervous System Stimulant Activity of 5,8-Methanoquinazolines Fused with Imidazole, Thiadiazole, Pyrimidine, and1,3,5-Triazine. -The synthesis of a variety of new camphor-pyrimidines fused with azoles [cf. (VII), (XV), (XVI)], pyrimidines [cf. (IX), (XIII)], and triazine (XI) f
## Abstract 5,8‐Methanoquinazolines fused with 1,2,4‐triazole 4–5, tetrazole 6, and 1,2,4‐triazine 8 were prepared starting from 2‐hydrazino‐5,8‐methanoquinazoline 3. Compound 3 and 6 showed the most potent central nervous system (CNS) stimulant activities.
## Abstract Reactions of camphor‐1,2,3‐triazine 1 with diphenylcyclopropenone 2 gave two cycloadducts; 6,9‐methanopyrazolo[1,2‐__b__][1,2,3]benzotriazinones 3–4. Oxidation of 1 with 3‐chloroperbenzoic acid gave 1‐oxide 5 as the major compound along with a trace of 1,2‐dioxide 6.