ChemInform Abstract: Unexpected and Facile Bridgehead Substitution in 5,6,7,8,9,10-Hexahydro-5,9-methanopyrimido[4,5-b]azocin-4(3H)-ones.
โ Scribed by E. C. TAYLOR; J. E. DOWLING; T. SCHRADER; B. BHATIA
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 32 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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โฆ Synopsis
Unexpected and Facile Bridgehead Substitution in 5,6,7,8,9,
azocin-4(3H)-ones.
-A method for the reductive removal of the bridgehead hydroxyl group in title compound (III) is developed. A bridgehead imine intermediate is proposed to be involved in the formation of thioether (VII). The protected tricyclic compound (VIII) is needed for the preparation of inhibitors of glycinamide ribonucleotide formyltransferase as potential cancer chemotherapeutic agents. -(TAYLOR,
๐ SIMILAR VOLUMES
## Synthesis of 2,4- 6,7,8,9,9methanopyrimido[4,azocine. -Optimization of direct annulation of triaminopyrimidine (I) with cyclohexenone (II) is achieved using acetic acid as solvent in a screw-capped pressure tube that is heated at 120 โข C for 18 hours. Compound (VII) as prototype, its derivative