Benzoic acid (2R,3S,4S,5R,6R)-4,5-bis-benzyloxy-6-(tert-butyl-diphenyl-silanyloxymethyl)-2-(2,2,2-trichloro-acetimidoyloxy)-tetrahydro-pyran-3-yl ester 、
Benzoic acid (2S,3S,4S,5R,6R)-2-((2R,3R,4R,5S,6S)-3-allyloxy-4-benzyloxy-5-hydroxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy)-4,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-3-yl ester 在
N-碘代丁二酰亚胺 、
ytterbium(III) triflate 作用下,
以
二氯甲烷 为溶剂,
反应 0.25h,
以103 mg的产率得到Bz(-2)[Bn(-3)][Bn(-4)][TBDPS(-6)]Man(a1-2)[Bz(-2)[Bn(-3)][Bn(-4)][Bn(-6)]Man(a1-6)][Bn(-3)][allyl(-4)]a-Man1Me