3,4-di-O-acetyl-5-amino-1-C-(2,3,4,6-tetra-O-benzyl-(α-D-glucopyranosyl)-5-N-benzyloxycarbonyl-1,5-dideoxy-5,6-N,O-isopropyliden-D-arabilo-hex-2-ulose 在
silica gel 、
三氯化铁 作用下,
反应 16.0h,
以76%的产率得到3,4-di-O-acetyl-2-amino-7,11-anhydro-8,9,10,12-tetra-O-benzyl-2-N-benzyloxycarbonyl-2,6-dideoxy-D-glycero-D-ido-D-manno-dodec-5-ulopyranose