18333-27-2Relevant academic research and scientific papers
OMPHAMURIN - A NEW COUMARIN FROM MURRAYA OMPHALOCARPA
Wu, Tian-Shung
, p. 178 - 179 (1981)
Key Word Index - Murraya omphalocarpa; Rutaceae; coumarin; omphamurin; 5,7-dimethoxy-8-(2'-hydroxy-3'-methyl-3'-butenyl)coumarin. A new coumarin, ophamurin, isolated from the n-hexane extract of the leaves of Murraya omphalocarpa, was characterized as 5,7-dimethoxy-8-(2'-hydroxy-3'-methyl-3'-butenyl)coumarin by chemical and spectral data.
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 (1996)
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.
Synthesis of Toddanol and Toddanone
Sharma, Padam N.,Shoeb, Aboo,Kapil, Randhir S.,Popli, Satya P.
, p. 938 - 939 (2007/10/02)
A synthetic approach to confirm the structures of toddanol (1) and toddanone (2) has been provided.In addition, coumurrayin (12), sibiricin (13), isosiribicin (14), toddaculin (8) and aculeatin (9) have also been synthesised.
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.
