Improved synthesis of natural isomeric naphthoxanthenones
5-methoxy-1H-naphtho[2,1,8-mna]xanthen-1-one (1) and 5-methoxy-3H-naphtho[2,1,8-mna]xanthen-3-one (musafluorone 2), a pair of positional isomers isolated from Wachendorfia thyrsiflora and Musa acuminata, were synthesized in six steps in an overall yield o
Synthesis of [phenyl-13C6]lachnanthocarpone and other 13C-labelled phenylphenalenones
[phenyl-13C6]Lachnanthocarpone ([phenyl- 13C6]2,6-dihydroxy-9-phenylphenalen-1-one), a hypothetical intermediate in the biosynthesis of various natural phenylphenalenones, was prepared in four steps using [U- s
PRODUCTS FROM PHOTOLYSIS OF PHENALENONE IN ALCOHOL MEDIA
Secondary reactions with the addition of the alcohol radicals to the ketyl radical of the phenalenone were observed during the irradiation of phenalenone in alcohols.In the presence of oxygen hydroxyphenalenones are formed in addition to the α-hydroxyalkyl derivatives.The dimerization and disproportionation processes are ineffective in the ketyl radicals of phenalenone.