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    Concise Synthesis of Yashabushidiol A and (+/-)-Diospongin A
    (2012-03-01)
    Ho, Tse-Lok
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    Tang, Bin
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    Ma, Guohua
    ;
    Xu, Pengfei
    ;
    應用化學系
    Synthesis of (+/-)-diospongin A has been achieved from the (2SR,4RS)-pentane-1,2,4,5-tetraol in six steps. An intermediate has also been converted into yashabushidiol A. This work features a desymmetric cyclization and reduction of a meso-1,7-diarylheptanoid precursor to furnish the desired cis-2,6-disubstituted tetrahydropyran.