(9aS)-8-acetyl-1,7-dihydroxy-3-methoxy-9a-methyl-9-oxo-9,9a-dihydrodibenzo[b,d]furan-4-carboxamide 、 7-Chloro-2-ethyl-1-naphthaldehyde 、
三乙基硅烷 、
三氟乙酸 以
乙腈 为溶剂,
以to give the target compound (6.0 g, yield: 65%) as a yellow solid的产率得到(9aS)-8-acetyl-N-[(7-chloro-2-ethyl-1-naphthyl)methyl]-1,7-dihydroxy-3-methoxy-9a-methyl-9-oxo-9,9a-dihydrodibenzo[b,d]furan-4-carboxamide