(2S,3R,6R)-6-((R)-Furan-2-yl-hydroxy-methyl)-3-methyl-3,6-dihydro-2H-pyran-2-carboxylic acid 2,2,2-trichloro-ethyl ester 在
4-二甲氨基吡啶 、
达卡巴嗪 、
4-(dimethylamino)pyridinium trifluoroacetate 作用下,
以
氯仿 为溶剂,
生成 (1S,4R,5R,8R,9S,12R,13R,16R,17S,20R,21R,24R)-4,12,20-tris(furan-2-yl)-8,16,24-trimethyl-3,11,19,25,26,27-hexaoxatetracyclo[19.3.1.15,9.113,17]heptacosa-6,14,22-triene-2,10,18-trione