3-oxo-3-phosphapentopyranoses

Addition of methyl phosphinate to 2(R)-methoxy 3-oxapentanedial gives all eight possible diastereoisomeric 3-phosphapentopyranoses in very poor yield. Structures and stereochemistry are assigned on the basis of ¹H, ³¹P, NMR, and mass spectroscopy of their acetates. © 1996 John Wiley & Sons, Inc.