86831-02-9Relevant academic research and scientific papers
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 (1983)
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
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
