(3S,6S,9S,13S,14R,15R)-13-Hydroxy-6-((R)-1-hydroxy-ethyl)-3-hydroxymethyl-9-isopropyl-14-methyl-15-tridecyl-1-oxa-4,7,10-triaza-cyclopentadecane-2,5,8,11-tetraone 、
乙酸酐 在
吡啶 作用下,
反应 2.0h,
以44%的产率得到Acetic acid (3S,6S,9S,13S,14R,15R)-13-hydroxy-6-((R)-1-hydroxy-ethyl)-9-isopropyl-14-methyl-2,5,8,11-tetraoxo-15-tridecyl-1-oxa-4,7,10-triaza-cyclopentadec-3-ylmethyl ester