在
甲醇 作用下,
以90%的产率得到quinoxalin-6-ylmethyl N-[[(1S,2R,5R,7R,8R,9R,11R,13R,14R)-8-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-4,6,12,16-tetraoxo-3,17-dioxa-15-azabicyclo[12.3.0]heptadecan-15-yl]methyl]carbamate