4-Dimethylamino-4-methyl-pentinsaeure-(2) 、 (2R)-2-((azetidin-3-yloxy)methyl)-N-((6
3S,4S,Z)-1
1-ethyl-1
2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-2
1,10,10-trimethyl-5,7-dioxo-6
1,6
2,6
3,6
4,6
5,6
6-hexahydro-1
1H,2
1H -8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(5,3)-triazolacycloundecaphane-4-yl)-3-methylbutanamide 在
(1-cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylaminomorpholinocarbenium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
以16.3%的产率得到(2R)-2-(((1-(4-(dimethylamino)-4-methylpent-2-ynoyl)azetidin-3-yl)oxy)methyl)-N-((6
3S,4S,Z)-1
1-ethyl-1
2-(2-((S)-1-methoxyethyl)pyridin-3-yl)-2
1,10,10-trimethyl-5,7-dioxo-6
1,6
2,6
3,6
4,6
5,6
6-hexahydro-1
1H,2
1H-8-oxa-1(5,3)-indola-6(1,3)-pyridazina-2(5,3)-triazolacycloundecaphane-4-yl)-3-methylbutanamide