3-(2-fluorophenyl)-1,4,2-dioxazol-5-one 、
莫西克汀EP杂质L 、
丙烯酸乙酯 在
silver hexafluoroantimonate 、
dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer 、
silver(I) acetate 作用下,
以
1,1,2,2-四氯乙烷 为溶剂,
以30 %的产率得到ethyl (E)-3-(2-((((2S,2a'E,2a1'S,4E,4'E,5S,6S,6'R,8'E,11'S,15'S,17a'R,20'R,20a'R)-20'-acetoxy-2a1'-hydroxy-4-(methoxyimino)-6',8',19'-trimethyl-6-((E)-4-methylpent-2-en-2-yl)-17'-oxo-2a1',3,4,5,6,6',10',11',14',15',17',17a',20',20a'-tetradecahydro-2'H,7'H-spiro[pyran-2,13'-[11,15]methano[1,5]dioxacyclooctadecino[9,8,7-cd]benzofuran]-5-yl)methyl)carbamoyl)-3-fluorophenyl)acrylate