乙酸酐 、
(1S,4S,7S,10S,13R,14S,15R)-7-((R)-1-Hydroxy-ethyl)-10-hydroxymethyl-4-isopropyl-14-methyl-13-tridecyl-12,16-dioxa-3,6,9-triaza-bicyclo[13.1.0]hexadecane-2,5,8,11-tetraone 在
吡啶 作用下,
反应 1.5h,
以60%的产率得到Acetic acid (1S,4S,7S,10S,13R,14S,15R)-7-((R)-1-hydroxy-ethyl)-4-isopropyl-14-methyl-2,5,8,11-tetraoxo-13-tridecyl-12,16-dioxa-3,6,9-triaza-bicyclo[13.1.0]hexadec-10-ylmethyl ester