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Female rats fed a zinc-deficient diet during pregnancy (days 0 to 21) had impaired reproduction and a high incidence of congenitally malformed young even though they had been fed a normal diet… (More)
SummaryThe metabolism of calcium was studied in manganese-deficient and zinc-deficient rats by a method combining a kinetic study using 45Ca with a short-term classical balance study. There were no… (More)
Flavonols (II) are obtained in yields of up to 35% by the condensation of ω- chloro-o-hydroxyacetophenones (i) with aromatic aldehydes in the cold in presence of ethanolic alkali.
"Crossed" products were not isolated when a mixture of to o-aroloxyacetoarones was transformed in the same solution by the Baker-Venkataraman method into o-hydroxydiaroyl-methanes. The absence of… (More)
iso Flavones are obtained, in some instances in satisfactory yield, by the action of formanilide or formamide on benzyl o-hydroxyphenyl ketones. 2-Substitutes isoflavones can be prepared by heating… (More)
Both 5 : 8 : 2' trimethoxyflavone (I ; R = Me) and the 2' : 3' : 6'- isomer(II; R = Me) yield 5 : 6 : 2' - trihydroflavone (IV : R = H) on demethylaction by hydridic acid. This result confirms… (More)