Abstract: | Conclusions A new coumarin has been isolated from the roots ofSeseli sessiliflorum for which the structure of 3 -angeloyloxy-2 ,2 -dimethyl-4 -(trans-3-methylthioacryloyloxy)-3 , 4 -dihydropyrano-5 ,6 :8,7-coumarin has been proposed. This is the first time that esters of 3-methylthioacrylic acid have been found in the coumarin series.All-Union Scientific-Research Institute of Medicinal Plants. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 517–521, September–October, 1970. |