97274-81-2Relevant academic research and scientific papers
SYNTHESIS OF (+/-)-PRAERUPTORIN A AND RELATED KHELLACTONE DERIVATIVES
Bal-Tembe, Swati,Bhedi, Dilip N.,Souza, Noel J. de,Rupp, Richard Helmut
, p. 1239 - 1249 (2007/10/02)
The first synthesis of the pyranocoumarin natural product, (+/-)-praeruptorin A (= Pd-Ia), is described.A general method for the preparation of various khellactone derivatives is reported.
COMPARATIVE CHARACTERIZATION OF THE COUMARIN COMPOSITION OF Seseli campestre GROWING IN MOLDAVIA AND IN THE CAUCASUS
Abyshev, A. Z.,Sidorova, I. P.,Abyshev, D. Z.,Florya, V. N.,Zmeikov, V. P.,Kerimov, Yu. B.
, p. 400 - 407 (2007/10/02)
The results are given of the identification of (-)-trans-khellactone and its 4'-methyl ether and (-)-3'(S),4'(S)-trans-3'-senecioyloxy-4'-angeloyloxy-3',4'-dihydroseselin and of the establishment of the structure of three new khellactone derivatives - campestrol (VII), C19H22O6, D20+32 deg (c 7.8; chloroform), campestrinol (X), C24H26O7, mp 116-118 deg C, and campestrinoside (I), C20H24O10, mp 172-173 deg C, D -272.5 deg (c 4.7; ethanol).It has been shown on the basis of chemical and spectral characteristics that campesol, earlier described as a new substance, is a mixture of two isomeric compounds - 4'-hydroxy-3'-senecioyloxy-3',4'-dihydroseselin and 3'-angeloyloxy-4'-hydroxy-3',4'-dihydroseselin.
