(Z)-4-{(2R,6R)-6-[(7E,12E)-(2S,6S,10S,11S)-10-Hydroxy-6-methoxymethoxy-2-methyl-13-((S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-4-methylene-11-(tetrahydro-pyran-2-yloxy)-trideca-7,12-dienyl]-5,6-dihydro-2H-pyran-2-yl}-but-2-enoic acid 在
trichloro-benzoyl chloride 、
N,N-二异丙基乙胺 、
4-二甲氨基吡啶 作用下,
以
四氢呋喃 、
苯 为溶剂,
反应 12.5h,
生成 (3Z,9E)-(1R,7S,11S,15S,17R)-11-Methoxymethoxy-15-methyl-7-[(E)-(S)-3-((R)-4-methyl-5,6-dihydro-2H-pyran-2-yl)-1-(tetrahydro-pyran-2-yloxy)-allyl]-13-methylene-6,21-dioxa-bicyclo[15.3.1]henicosa-3,9,19-trien-5-one 、 (3E,9E)-(1R,7S,11S,15S,17R)-11-Methoxymethoxy-15-methyl-7-[(E)-(S)-3-((R)-4-methyl-5,6-dihydro-2H-pyran-2-yl)-1-(tetrahydro-pyran-2-yloxy)-allyl]-13-methylene-6,21-dioxa-bicyclo[15.3.1]henicosa-3,9,19-trien-5-one