77790-53-5Relevant articles and documents
Prenylcoumarins from Murraya paniculata var. omphalocarpa (Rutaceae): The absolute configuration of sibiricin, mexoticin and omphamurin
Kinoshita, Takeshi,Wu, Jin-Bin,Ho, Feng-Chi
, p. 1208 - 1211 (2007/10/03)
Three new prenylcoumarins, murpaniculol senecioate, 5-methoxymurrayatin and omphamurin isovalerate were isolated from the leaves of Murraya paniculata var. omphalocarpa (Rutaceae), together with six known coumarins, paniculatin, (-)-sibiricin, 5,7-dimethoxy-8-(3'-methyl-2'-oxobutyl)coumarin, (-)-mexoticin, omphamurin and omphalocarpin. Their structures were characterized on the basis of spectroscopic evidence. The absolute configuration of omphamurin at the C-2' position has been determined to be S by Horeau's method. The absolute stereochemistry of (-)-mexoticin and (-)- sibiricin has also been established by their chemical correlation with omphamurin.
NEW COUMARINS FROM THE UMBELS OF SESELI SIBIRICUM
Banerjee, Sunil K.,Gupta, Bishan D.,Kumar, Raman,Atal, C. K.
, p. 281 - 284 (2007/10/02)
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.
