NEW COUMARINS FROM THE UMBELS OF SESELI SIBIRICUM

Article abstract of DOI:10.1016/S0031-9422(00)81974-3

Three new coumarins, seselinal, sesibiricol and sibirinol, and 12 known coumarins have been isolated from the umbels of seseli sibiricum.The new coumarins have been characterized as 5,7-dimethoxy-8-(2-methyl-2-formylpropyl)-2H-1-benzopyran-2-one, 5-(3-methylbut-2-enyloxy)-7-methoxy-8-(2-hydroxy-3-methylbut-3-enyl)-2H-1-benzopyran-2-one and 5,7-dimethoxy-8-(2-hydroxy-3-methylbut-3-enyl)-2H-1-benzopyran-2-one, respectively.The known ones were identified as sesibiricin, isosibiricin, osthol, coumurrayin, sesebrin, sesebrinol, sibiricin, imperatorin, bergapten, xanthotoxin, isopimpinellin and mexoticin.Key Word Index - Seseli sibiricum; Umbelliferae; umbels; coumarins; 2H-1-benzopyran-2-one; seselinal; sesibiricol; sibirinol; isosibiricin; sesibiricin; osthol; coumurrayin; sesebrin; sesebrinol; sibiricin; imperatorin; bergapten; xanthotoxin; isopimpinellin; mexoticin.