Synthesis of P-chiral enephosphonic acid derivatives
摘要:
An efficient and convenient synthesis of chiral enephosphonic acid derivatives (enephosphonates, enephosphonamides, enephosphinates) was reported by a two-step procedure involving alkylidenediphosphorylation of nucleophiles followed by a Horner-Emmons olefination. Depending on the selected strategy, the synthesis could be executed according to a one-pot or a two-step reaction sequence. Regioselectivity of Horner-Emmons reaction and P-31-NMR study of diphosphorylated anions were described. (C) 2002 Elsevier Science B.V. All rights reserved.
Monoglycosyl, diglycosyl, and dinucleoside methylenediphosphonates: direct synthesis and antiviral activity
作者:Claude Grison、Stéphane Joliez、E. De Clercq、Philippe Coutrot
DOI:10.1016/j.carres.2006.03.023
日期:2006.7
A direct and general access to D-glycosyl 3-, 5-, or 6-methylenediphosphonates, di-D-glycosyl 1,5-, 3,5-, 3,6-, 5,5-, or 6,6-methylenediphosphonates and dithymidine 3',5'-methylenediphosphonate is described. The method involves the one-pot alkylidenediphosphorylation of glycosyl or thymidine derivatives. No antiviral activity was detected against a panel of RNA and DNA viruses. (c) 2006 Elsevier Ltd. All rights reserved.