A facile route to phenyl, phenylsulfanyl and phenylselanyl substituted pyrano[3,2-c]chromenes
作者:Margita Lácová、Renata Gašparová、Pavol Koiš、Andrej Boháč、Hafez M. El-Shaaer
DOI:10.1016/j.tet.2009.11.057
日期:2010.2
The synthesis of phenyl, phenylsulfanyl and phenylselanyl substituted pyrano[3,2-c]chromenes 4 is accomplished via cyclocondensation of 4-oxo-4H-chromen-3-carbaldehydes 1 with appropriately substituted acetic acids 2 under mild conditions. Further treatment of 4 with alcohol or water led to 5-alkoxy- and 5-hydroxy-2H,5H-pyrano[3,2-c]chromen-2-ones 5 and 6, respectively. Acid and thermal catalysed rearrangement
苯基,苯基硫烷基和苯基硒基取代的吡喃并[3,2- c ]苯并二甲基苯并[ 4 ]的合成是通过在适当的条件下将4-oxo-4 H -chromen-3-carbaldehydes 1与适当取代的乙酸2进行环缩合而完成的。用醇或水进一步处理4分别导致5-烷氧基-和5-羟基-2 H,5 H-吡喃并[3,2 - c ]铬-2--2-酮5和6。酸和热催化重排4 – 6得到5-羟基吡喃并[2,3 - b ] chromen-2(10a H)-一7和他们随后的取代导致5-烷氧基衍生物8。4与酰胺的反应导致5-酰基氨基或5-苯基磺氨基取代的2 H,5 H-吡喃并[3,2 - c ]铬-2-酮9。反应在加热或微波辐射下进行。
Synthesis of 3-phenyl-2H,5H-pyrano[3,2-c]chromen-2-one derivatives and their antineoplastic activity
water or alcohols. Twelve synthesized compounds were evaluated on their antineoplasticactivities 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.