乙酸酐 、
(S)-N-[(2R,3S,4S,5S,6S)-5-[(2R,3S,4S,5S,6R)-5-((S)-2,4-Dihydroxy-butyrylamino)-3,4-dihydroxy-6-methyl-tetrahydro-pyran-2-yloxy]-4-hydroxy-2-methyl-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-3-yl]-2,4-dihydroxy-butyramide 在
吡啶 作用下,
以570 mg的产率得到Acetic acid (2R,3R,4S,5S,6S)-3-((S)-2,4-diacetoxy-butyrylamino)-5-[(2R,3S,4S,5R,6R)-3,4-diacetoxy-5-((S)-2,4-diacetoxy-butyrylamino)-6-methyl-tetrahydro-pyran-2-yloxy]-2-methyl-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-4-yl ester