Synthesis and computational analysis of conformationally restricted [3.2.2]- and [3.2.1]-3-azabicyclic diamines

Sreedhar Reddy Tummalapalli, Rohit Bhat, Craig Waitt, Henk Eshuis, David P. Rotella

Research output: Contribution to journalArticlepeer-review

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Conformational restriction is a useful approach for ligand design in organic and medicinal chemistry. This manuscript reports the facile synthesis and in silico conformational analysis of two new diastereomeric [3.2.2]-3-azabicyclic, two new [3.2.1]-3-aza-8-oxy-bicyclic and one new [3.2.1]-3-azabicyclic diamine scaffolds. A conformational analysis of these structures along with calculation of carbon–carbon/carbon–nitrogen bond angles was carried out and compared to those in the flexible 1,3-diaminopropane template upon which they were based. It is of particular importance that these scaffolds have bond lengths and angles that can overlap with low energy conformers of the flexible diamine. Such information is useful for ligand design in organic chemistry and for development of structure activity relationships and in silico screening in medicinal chemistry.

Original languageEnglish
Pages (from-to)4087-4089
Number of pages3
JournalTetrahedron Letters
Issue number43
StatePublished - 2017


  • Computational analysis
  • Conformational restriction
  • Diamines


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