G. Shapiro et al., SYNTHESIS OF BOTH D-FMOC-ABU[PO(OCH2CH=CH2)2]-OH AND L-FMOC-ABU[PO(OCH2CH=CH2)2]-OH FOR SOLID-PHASE PHOSPHONOPEPTIDE SYNTHESIS, Tetrahedron letters, 34(39), 1993, pp. 6255-6258
The Schollkopf bislactim ether asymmetric amino acid synthesis was cou
pled with a subsequent enzyme mediated ester hydrolysis to generate a
practical synthesis of both D and L enantiomers of Fmoc-Abu[PO(OCH2CH=
CH2)2]-OH (6). With this building block phosphonopeptide isosteres of
serine phosphopeptides are accessible by Fmoc-solid phase peptide synt
hesis.