As part of a study on additions to strained olefins and synthesis of strained nitrogen heterocycles, we have found that addition of methoxycsrbonylnitrene to 1,2dimethylcyclobutene, 2, and l-methylcyclobutene, 2, provides a convenient synthesis of the corresponding 5-azabicyclo[2.l.O]pentanes 2a and
An unprecedented entry to 5,6-dihydroxy-2-azabicyclo[2.2.1]heptan-3-one
โ Scribed by Christopher F. Palmer; Robin M. Bannister; Ray McCague
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 193 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
A catecholborane mediated reaction of the lactam epoxide unexpectedly gave the cis-diol a useful intermediate for adenosine agonists. The origin of this reaction is postulated to arise from the formation ofa boronic anhydride which is transferred to the electron deficient C-6 via transannular attack by the amide nitrogen.
๐ SIMILAR VOLUMES
Fluorination of phenylsulfinyl bicycloamide using molecular fluorine proceeded preferentially with inversion of the carbon atom having the sulfinyl group to afford a-fluorinated sulfonyl bicycloamide in fair yield. The fluorinated sulfonyl bicycloamide was converted to 2'fluoro substituted carbovir
Synthesis and SAR of a new class of 1-azabicyclo[2.2.1 Jheptan3-one. 0-(3-mtthyl-5-aryl-2-penten-4-ynyl) oxime muscarinic agonists are described Depend@ on the geometry of the C=N and C=C bonds, subnanomolar potency and/or high efbcy an achkved.