The Case for Configurational Stability of H-Phosphonate Diesters in the Presence of Diazabicyclo[5.4.0]undec-7-ene (DBU)
2001 (English)In: Bioorganic & Medicinal Chemistry, ISSN 0968-0896, Vol. 9, no 9, 2315-2322 p.Article in journal (Refereed) Published
Configurational stability of dinucleoside H-phosphonates and the stereochemical course of their sulfurisation in the presence of diazabicyclo[5.4.0]undec-7-ene (DBU) were investigated using 31P NMR spectroscopy. It was found that under the reaction conditions and irrespective of the type of protecting groups present in the nucleoside moieties, the H-phosphonate diesters investigated did not undergo any detectable epimerisation at the phosphorus centre, and their sulfurisation with elemental sulfur in the presence of DBU, proceeded stereospecifically. Thus, we could not confirm reports from another laboratory on a stereoselective course of sulfurisation of H-phosphonate diesters and the corresponding acylphosphonates in the presence of DBU.
Place, publisher, year, edition, pages
Elsevier , 2001. Vol. 9, no 9, 2315-2322 p.
Research subject Organic Chemistry
IdentifiersURN: urn:nbn:se:su:diva-23234DOI: 10.1016/S0968-0896(01)00140-7OAI: oai:DiVA.org:su-23234DiVA: diva2:190869
Part of urn:nbn:se:su:diva-2022004-08-192004-08-192010-01-05Bibliographically approved