(1E,3S,4S,6S)-3-[(4-methoxybenzyl)oxy]-6-(methoxymethoxy)-1-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]nona-1,8-dien-4-yl (2Z)4-{(2R,6R)-6-[(2S)-2-methylpent-4-yn-1-yl]-5,6-dihydro-2H-pyran-2-yl}but-2-enoate 在
cyclopentadienylruthenium(II) trisacetonitrile hexafluorophosphate 作用下,
以
丙酮 为溶剂,
反应 0.25h,
以98%的产率得到(1R,3Z,7S,9R,10E,15S,17R)-7-{(2E)-1-(4-methoxybenzyloxy)-3-[(2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl]allyl}-9-(methoxymethoxy)-15-methyl-13-methylene-6,21-dioxabicyclo[15.3.1]henicosa-3,10,19-trien-5-one