4-Hydroxy-5-methylcoumarin derivatives from Diospyros kaki Thunb and D. kaki var. Sylvestris makino; structure and synthesis of 11-methylgerberinol
作者:S.K. Paknikar、K.P. Pai Fondekar、J.K. Kirtany、S. Natori
DOI:10.1016/0031-9422(95)00698-2
日期:1996.2
Two 4-hydroxy-5-methylcoumarinderivatives have been isolated from the roots of DiospyroskakiThunb and D. kakiThunbvar. sylvestrisMakino. One was shown to be identical to gerberinol, previously isolated from the Compositae plant Gerbera lanuginosa. The other was found to be a new natural product whose structure, 11-methylgerberinol, was proved by spectral analysis and further confirmed by synthesis