Short synthesis of 3-prenylcoumarins by an unusual prenylation
Prenylation of coumarins that have hydroxyl or alkoxyl or halo substitution (1a-1i) using 2-methyl-3-butene-2-ol in the presence of boron trifluoride formed 3-prenylcoumarins (2a-2d). Copyright Taylor & Francis Group, LLC.
Ramachandra, Marellapudi S.,Subbaraju, Gottumukkala V.
p. 3723 - 3727
(2007/10/03)
Synthesis of 3-(3,3-Dimethyl)xanthyletin
A convenient method for the construction of 3,3-dimethylallyl unit at C-3 of coumarin nucleus has been developed and utilized in the synthesis of the title compound (14).The synthetic strategy involves condensation of 3-formyl-7-benzyloxycoumarin with ace
Swaroop, Divya,Sharma, R. B.,Kapil, R. S.
p. 105 - 108
(2007/10/02)
Synthesis of Balsamiferone and dl-3-(3,3-Dimethylallyl)marmesin
The structures of naturally occurring coumarins balsamiferone and 3-(3,3-dimethylallyl)marmesin as 3,6-bis(3-methyl-2-butenyl)-7-hydroxycoumarin and 3-(3-methyl-2-butenyl)-6,7-dihydro-7-(1-hydroxy-1-methylethyl)-2H-furobenzopyran-2-one, respectively have been confirmed by syntheses.
Swaroop, (KM) Divya,Sharma, R. B.,Kapil, R. S.
p. 408
(2007/10/02)
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