(S)-(+)-dimethyl (3-methyl-2-oxohept-5-yn-1-yl)phosphonate 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
反应 5.0h,
生成 methyl 4-[(1R,2R,3aS,8bS)-2-hydroxy-1-[(3S,4S)-3-hydroxy-4-methyloct-1-en-6-ynyl]-2,3,3a,8b-tetrahydro-1H-cyclopenta[b][1]benzofuran-5-yl]butanoate