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81.
The total synthesis of psymberin was achieved employing a readily available chiral epoxide to prepare two of the three subunits in the natural product. The key reaction was a highly stereoselective organocatalytic oxa-conjugate addition reaction of α,β-unsaturated ketone catalyzed by primary diamine for the synthesis of the 2,6-trans-tetrahydropyran embedded in psymberin. 相似文献
82.
Construction of a rose-like hierarchical superstructure composed of rare-earth hydroxide nanosheets and polyoxomolybdates, which was achieved by the self-assembly at room temperature, led to a drastically enhanced photoluminescence. 相似文献