Flavonoids Carrying Isoprenoid Substituents

Flavonoids Carrying Isoprenoid Substituents Isolated from the Japanese Cultivated Mulberry Tree 

As shown in Fig. 4 thirteen new flavonoids with isoprenoid substituents were obtained from the extract of the root bark of the Japanese cultivated mulberry tree. Morusin (24, 0.04% yield from dried Moms root bark) (52), kuwanons G (25, 0.2% yield) (55), H (26, 0.13% yield) (54), and mulberrofuran G (27, 0.08% yield) (55) are the main phenolic constituents, the others are minor. 

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Table 2. C-NMR Data of Flavonoids Carrying Isoprenoid Substituents...

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