Fig. 7: Synthetic scheme of core structures of PIMs and GPI anchors.

a Chemical structures of PIMs and GPI anchors. b Synthesis of core structures 52 and 54 using the present glycosylation method. Tf trifluoromethanesulfonyl, Ac acetyl, TBAF tetra-n-butylammonium fluoride, Et ethyl, MS molecular sieve, MOM methoxymethyl, DIPEA N,N-diisopropylethylamine, BRSM based on recovered starting material.