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- W1545886502 abstract "Abstract Both liquid and solid hexahydrocostunolides obtained by the pressure hydrogenation of costunolide (V) and solid dihydrocostunolide (VI) respectively, give the same optically active hexahydrogermacol (IIIa), when subjected to controlled reduction with LiAlH 4 , followed by Huang-Minlon reduction. The alcohol (IIIa) on oxidation with chromic oxide gives optically active hexahydrogermacrone (IIa). Dehydration of IIIa with KHSO 4 followed by catalytic hydrogenation gives the optically inactive saturated hydrocarbon, germacrane (IV). Since the total synthesis of solid dihydrocostunolide (VI) has already been achieved the preparation of IIIa, IIa and IV from VI constitutes a total synthesis of the above three compounds." @default.
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- W1545886502 date "1964-01-01" @default.
- W1545886502 modified "2023-09-22" @default.
- W1545886502 title "Terpenoids—LVII" @default.
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- W1545886502 doi "https://doi.org/10.1016/s0040-4020(01)98511-4" @default.
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