Showing papers on "Anthrone published in 1997"
TL;DR: A simple normal-HPLC procedure was applied to the analysis of different yeast extract samples and the results showed that in some cases the anthrone method may in fact produce inflated results although presenting consistency within the set of data.
63 citations
TL;DR: The leaves of Aloe vera afforded, together with 10-hydroxyaloins A and B, a new pair of diastereoisomeric C -glucosylanthrones whose structures were established as 8- O -methyl-7-Hydroxyaloin A and 8-O -methyl -7-hydroaloin B from spectroscopic studies.
16 citations
TL;DR: A new compound, 3,4-dihydro-3,5,7-trihydroxy-9-methyl-1(2H)-anthracenone, designated as aloe barbendol has been isolated from the roots of Aloe barbadensis, while three known constituents, aloe emodin,Aloe chrysone and barbaloin A have been obtained from the sap of the leaves.
16 citations
TL;DR: 5-Hydroxyaloin A and a new anthrone, named as microstigmin A, were isolated from the leaf exudate of Aloe microstigma and the structure was determined by spectroscopic techniques as well as by conversion into 5-hydroxyaloIn A.
16 citations
TL;DR: In this paper, 3,3,3-Triphenylpropionic acid was transformed to 10-cyano-10-phenyl-9-anthrone when treated in connsecutive order with trifluoroacetic anhydride and sodium nitrite.
2 citations
TL;DR: In this paper, skeletal isomerization of arylsilanes that occurs under conditions of catalytic dehydrocyclization and is accompanied by migration of the triorganosilyl group was confirmed by de-decryclization of dimethyl(2,4-dimethylphenyl)(1-naphthyl)silane on chromium-containing oxide catalysts.
Abstract: Skeletal isomerization of arylsilanes that occurs under conditions of catalytic dehydrocyclization and is accompanied by migration of the triorganosilyl group was additionally confirmed by dehydrocyclization of dimethyl(2,4-dimethylphenyl)(1-naphthyl)silane on chromium-containing oxide catalysts.
1 citations
TL;DR: In this article, the authors used NIS spectroscopy to analyze the solid phase and low temperature vibrational features of two antiviral agents, anthrone and bianthrone, which belong to a group of molecules whose main member is hypericin.