Tetrahedron Letters p. 6757 - 6760 (1998)
Update date:2022-08-03
Topics:
Harrowven, David C.
Newman, Nicola A.
Knight, Carly A.
7-(3,4-Dimethoxyphenyl) 6-methylindeno[5,6-d][1,3]dioxol-5-one 2 has been reported as a neo-lignan isolated from the fruits of Virola sebifera. However, physical and spectroscopic data obtained from two synthetic samples of 2 do not match those quoted in the isolation paper. Data obtained from an isomer, 3-(benzo[1,3]dioxol-5-yl)-5,6-dimethoxy-2-methylinden-1-one 10, are in closer agreement but the 13C NMR spectrum reveals many inconsistencies.
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