112667-13-7Relevant academic research and scientific papers
ISOLATION OF CANDIRONE: A NOVEL PENTAOXIGENATION PATTERN IN A NATURALLY OCCURRING 2-PHENYL-4H-1-BENZOPYRAN-4-ONE FROM TEPHROSIA CANDIDA
Parmar, Virinder S.,Jain, Rajni,Simonsen, Ole,Boll, Per M.
, p. 4241 - 4248 (1987)
Two flavones having very similar physical behaviour and spectral data have been isolated as minor constituents from the seeds of Tephrosia candida.Based upon a detailed and critical study of their mass spectra, extent of shifts in their UV spectra, X-ray diffraction studies, and preparation of their derivatives, the structures of these compounds have been established; one was found to be penduletin (1) and the other 5-hydroxy-2-(4-hydroxyphenyl)-3,6,8-trimethoxy-4H-1-benzopyran-4-one (2), for which the name candirone is proposed.To the best of our knowledge the latter is a new compound and this type of oxygenation pattern is not known earlier among natural flavones.
REVISED STRUCTURE OF A NATURAL FLAVONE FROM TEPHROSIA CANDIDA
Horie, Tokunaru,Kawamura, Yasuhiko,Kobayashi, Takashi,Yamashita, Kazuyo
, p. 1189 - 1192 (2007/10/02)
The structure of a natural flavone, candirone from Tephrosia candida, assumed to be 5,4'-dihydroxy-3,6,8-trimethoxyflavone, is revised to 5,4'-dihydroxy-3,6,7-trimethoxyflavone, penduletin on the basis of spectral data. - Key words: Tephrosia candida; Leg
