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DidemnaketalA是一类具有明显抗艾滋病活性的天然螺环缩酮类化合物[1],但至今未见有关合成及立体化学研究的报道.为进一步研究这类螺环缩酮类化合物的生理活性,我们开展了侧链简化的类似物(如化合物1)的合成研究. 相似文献
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寻找抗艾滋病活性的抚导化合物是当前药物化学研究领域中的热点之一. 相似文献
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本文用NOE和二维核磁共振技术-COSY,C-H化学位移相关,C-H远程化学位移相关(COLOC),DEPT对二个倍半萜分子的立体化学结构进行了研究,并对其1H和13C化学位移进行了归属。 相似文献
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A facile and highly diastereoselective method for the construction of 2-quaternary 1,3-amino alcohols and 1,3-diols has been developed on the basis of the AlEt3/THF-promoted tandem rearrangement/reductive reaction of α-hydroxy (amino) aziridines (epoxides). The progressive achievement in this article included that both 2-epimers of the units could be constructed from the initially same substrate. Also a stereochemistry assignment we reported previously was corrected. 相似文献
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IntroductionAlargenumberofthedihydroagarofuransesquiter-penes,isolatedfromCelastraceaeplantshavebeendemonstratedtoexhibitmanyimportantbiologicalac-tivities,suchascytotoxic,1antitumor,2immunosuppres-sive,3insecticided,4anti-HIVactivities,5etc.Therefore,synthesisofthiskindofcompoundshasbeenattractingthegreatinterestoforganicchemists,andsomemethodshavebeenreported.6Theseapproaches,however,areusuallyapplicabletothosecompoundswiththespecialhydroxylgroupnumberand/orspecialhydroxylsubsti-tutionfash… 相似文献
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