water or alcohols. Twelve synthesized compounds were evaluated on their antineoplastic activities on 60 human tumour cell lines panels in NCI USA. According to the screening results 3-phenyl-2H,5H-pyrano[3,2-c]chromen-2-one was discovered as a new leading skeleton suitable for further development. Some SAR conclusions were made. Antitubuline mechanism for the most active compound 3g has been proposed.
                                    4-oxo-4H-chromen-3-carbaldehydes 1 与
苯乙酸 2 在温和条件或微波辐射下反应生成 3-phenyl-2-oxo-2H,5H-pyrano[3,2-c]chromen-5-
醋酸酯 3. 在更强的条件下,副产物 5-(2-hydroxybenzoyl)-3-phenyl-2H-pyran-2-ones 4 和 5-hydroxy-2H,10aH-pyrano[2,3-b]chromen-2 -ones 5 也获得了。5-羟基和5-烷氧基-2H,5H-
吡喃并[3,2-c]色烯-2-酮6和7分别通过3与
水或醇反应很容易制备。在美国 NCI 的 60 个人类肿瘤
细胞系面板上评估了 12 种合成化合物的抗肿瘤活性。根据筛选结果,3-苯基-2H,5H-
吡喃并[3,2-c]色烯-2-one被发现是一种适合进一步开发的新型先导骨架。得出了一些 
SAR 结论。