20065-99-0Relevant articles and documents
ISOLATION OF DIHYDROXYLUPENE AND DIHYDROXYLUPANE FROM THE BARK OF LAWSONIA INERMIS
Chakrabartty, Tarakeswar,Poddar, Gurudas,Pyrek, Jan St.
, p. 1814 - 1816 (1982)
Two pentacyclic triterpenes isolated from the bark of henna were identified as 3β,30-dihydroxylup-20(29)-ene (hennadiol), and (20S)-3β,30-dihydroxylupane.The assignment of the C-20 configuration in the latter compound was supported by the analysis of Eu(fod)3-induced 1H NMR chemical shifts in the two C-20 epimers synthesized from lupeol. - Key Word Index: Lawsonia inermis; Lythraceae; henna; triterpenoids; 30-hydroxylupeol; 30-hydroxylupanol.
Side chain oxidation of lupeol: A reinvestigation
Roy, Kamal,Bhaduri, A. P.
, p. 823 - 824 (2007/10/03)
Oxidation of lupeol with m-chloroperbenzoic acid yields lup-20-norketone-3β-ol (6), lup-20(29)-ene-3β,30-diol (7) and lup-20-al-3β-ol (8).Formation of the compounds 7 and 8 from lupeol is being reported for the first time.
Lichens and Fungi. XVIII. Extractives from Pseudocyphellaria rubella
Corbett, R. Edward,Cong, Aimy N. T.,Holland, Patrick T.,Wilkins, Alistair L.
, p. 461 - 468 (2007/10/02)
Twenty lupane triterpenoids including five (20RS)-epimeric pairs have been isolated from the chloroform extractives of the lichen Pseudocyphellaria rubella.The utility of g.c.-m.s. procedures in the structural elucidation of the extractives, some of which were complex mixtures is discussed.