529-70-4Relevant academic research and scientific papers
1-PHENYLETHANONE FROM ACRONYCHIA PEDUNCULATA ROOT BARK
Kumar, Vijaya,Karunaratne, Veranja,Meegalle, M. R. Sanath K.
, p. 1278 - 1279 (1989)
A new arylketone, 1-phenylethanone, was isolated together with acronylin, acrovestone, bergapten, β-amyrin and three furoquinoline alkaloids from the root bark of Acronychia pedunculata. - Keywords: Acronychia pedunculata; Rutaceae; arylketone; 1-phenylethanone; furoquinoline alkaloids; acronylin; acrovestone; bergapten.
Aryllead-mediated synthesis of linear 3-arylpyranocoumarins: synthesis of robustin and robustic acid
Donnelly, Dervilla M. X.,Molloy, David J.,Reilly, John P.,Finet, Jean-Pierre
, p. 2531 - 2534 (2007/10/02)
The two naturally occurring linear 3-arylpyranocoumarins, robustin 1 and robustic acid 2, have been synthesised in nine steps from methyl 2,4,6-trihydroxyphenyl ketone, in 19percent overall yield for robustin and 18percent for robustic acid.Their synthese
AN ELEGANT SYNTHESIS OF SOME NATURALLY OCCURRING LINEAR ACETYLCHROMENES: EUPATORIOCHROMENE, METHYLEUPATORIOCHROMENE (ENCECALIN); EVODIONOL AND METHYLEVODIONOL
Ahluwalia, V. K.,Prakash, Chandra,Gupta, Ranjna
, p. 609 - 611 (2007/10/02)
An elegant synthesis of linear acetylchromenes, viz eupatoriochromene, methyleupatoriochromene (encecalin), evodionol and methylevodionol, has been achieved by blocking the reactive position C-3 of the appropriate ketones with an iodo group, prenylation with 3-chloro-3-methylbut-1-yne and subsequent cyclisation.Regiospecific introduction of C-prenyl group in the less reactive position C-5 has been achieved by the reaction of the appropriate 3-iodo ketones with 2-methylbut-3-en-2-ol.The 5-prenyl ketones are also essential intermediates for the synthesis of linear acetylchromenes.
NUCLEAR ISOPRENYLATION OF POLYHYDROXYACETHOPHENONES ACID CATALYSED CONDENSATION WITH ISOPRENE
Ahluwalia, V. K.,Arora, K. K.
, p. 1437 - 1440 (2007/10/02)
A novel method of nuclear isoprenylation leading to the exclusive formation of 2,2-dimethylchromans has been achieved by the direct condensation of polyhydroxyacetophenones with isoprene in presence of phosphoric acid.Acetylchromans, thus obtained, are dehydrogenated with DDQ to given corresponding 2,2-dimethylchromenes.Using this method, synthesis of number of naturally occuring chromenes, viz. ripariochromene A (6), eupatoriochromene (10), encecalin (11), isoevodionol (16), evodionol (17) and methylevodionol (18) has been affected.
