【摘要】 <正> 姜科(Zingiberaceae)姜黄属(Curcuma)是一个重要的药用植物群,其根茎和块根分别称为姜黄(或莪术)和郁金。中医中药认为,郁金具有行气、解瘀和通经等功效。动物药理试验表明,姜科植物温郁金(Curcuma aromatic更多还原

【Abstract】 The syntheses of iso-α-curcumene （8） and its three derivatives-dehydro-iso-α-curcumene （6）, 2-methyl-6-p-totyl-5-hepten-2-ol （7） and 2-methyl-6-p-totyl-2-heptanol（9） were described. The intermediate enone 4 was synthesized from p-methylacetophenonewith vinylmagnesium bromide followed by Carroll reaction with ethyl acetoacetate. Hydroge-nation of 4 led to ketone 5. 4 and 5 via Wittig reaction with Ph₃ P=CH₂ and Grignardreaction with CH₃MgI gave rise to Compounds 6, 8 and 7, 9, respectively. compounds 6and 7 have not been reported in literature. Their chemical structures were identified.更多还原