79760-25-1Relevant academic research and scientific papers
Studies on the Synthesis of Heterocyclic Compounds containing Benzopyrone. Part 4. Synthesis of 4,10-Dihydro-3-hydroxy-3-methyl-1H,3H-pyranobenzopyran-10-one, the Basic Skeleton in Fulvic Acid
Yamauchi, Masashige,Katayama, Sadamu,Nakashita, Yoshihiko,Watanabe, Toshio
, p. 183 - 186 (2007/10/02)
The synthesis of 4,5-dihydro-3-hydroxy-3-methyl-1H,3H-pyranobenzopyran-10-one(1b), the basic skeleton in fulvic acid, is described.The acetal (4), chosen as a common intermediate for syntheses of the basic skeleton in fungal metabolites such as
Regioselective Synthesis of 4,10-Dihydro-3-hydroxy-3-methyl-1H,3H-pyranobenzopyran-10-one, the Basic Skeleton in Fulvic Acid
Yamauchi, Masashige,Katayama, Sadamu,Nakashita, Yoshihiko,Watanabe, Toshio
, p. 335 - 336 (2007/10/02)
The first synthesis of 4,10-dihydro-3-hydroxy-3-methyl-1H,3H-pyranobenzopyran-10-one, the basic skeleton in fulvic acid, was achieved by sequential cyclization, which involved hydrogenation of the boron complex of the dione (5) obtained by regio
