(4S,7R,8S,9S,12Z,15S)-4,8-dihydroxy-5,5,7,9-tetramethyl-15-[(E)-1-(2-methyl-1,3-thiazol-4-yl)prop-1-en-2-yl]-1-oxacyclopentadec-12-ene-2,6-dione 在
甲基(三氟甲基)-1,3-二环氧丙烷 作用下,
以
乙腈 为溶剂,
以35%的产率得到(1S,3S,7S,10R,11S,12S,15R)-7,11-dihydroxy-8,8,10,12-tetramethyl-3-[(E)-1-(2-methyl-1,3-thiazol-4-yl)prop-1-en-2-yl]-4,16-dioxabicyclo[13.1.0]hexadecane-5,9-dione