The preparation of ketal-enone (3) and hydroxy-ketones (1a), (16), and (4a), from (−)-camphor (6) represents a formal enantiospecific synthesis of (+)-carpesiolin, (+)-confertin, (−)-damsin, (−)-helenalin, (+)-bigelovin, (+)-mexicanin I, and (+)-linifolin A.
由(-)-
樟脑(6)制备
缩酮-烯酮(3)和羟基酮(1a),(16)和(4a)代表了(+)-木瓜
酚((+))的形式对映体特异性合成-confertin,(-)-damsin,(-)-helenalin,(+)-bigelovin,(+)-mexicanin I和(+)-linifolin A.