CHEMICAL TRANSFORMATION FROM DIHYDROISOCOUMARIN INTO BENZYLIDENEPHTHALIDE BY USE OF REGIOSPECIFIC OXIDATIVE LACTONIZATION MEDIATED BY COPPER CHLORIDE (II) : SYNTHESES OF THUNBERGINOL F AND HYDRAMACROPHYLLOL A AND B
作者： Masayuki YOSHIKAWA , Emiko HARADA , Nobuhiro YAGI , Yasuhiro OKUNO , Osamu MURAOKA
DOI: 10.1248/CPB.42.721
关键词:
摘要: Oxidative lactonization of 2-carboxystilbene mediated by CuCl2 proceeded regiospecifically to give the five-membered lactone. By utilizing this as a key reaction, chemical transformation from dihydroisocoumarine into benzylidenephthalide was accomplished, and it applied structural elucidation two new phthalide, hydramacrophyllols A B.
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