Coumarins, also referred as benzopyran-2-ones, and their corresponding nitrogen
counterpart, 1-azacoumarins also referred to as carbostyrils, are a family of nature-occurring …

Furanocoumarins (psoralens) exist in various plants and some of them are used to cure skin
diseases. These chemicals draw attentions recently because of their abilities to arouse drug …

Psoralen and its derivatives (linear furanocoumarins) are used in dermatology, and are also
very promising in the treatment of other diseases. These secondary metabolites occur …

Synthesis of 2-Methyl-9-oxo-9<italic>H</italic>-furo[2,3-<italic>c</italic>]benzopyrans and 2-Methyl-3&l
Page 1 SYNTHETIC COMMUNICATIONS, 28(13), 2421-2428 (1998) SYNTHESIS OF ~-METHYL-~-OXO-~H-FURO[~,~-C]BENZO …

(24%, M-CO-CH (CH3) 2); m/e 219 (45%, m/e 220-H); m/e 205 (6.75%, m/e 220-CH3);
m/e206 (15%, m/e 205+ H); m/e 178; m/e 177; m/e 161; mle 147. Side chain fragmentation …

Fig. 1. Structures of investigated'furocoumarins. lett-Packard, Waldbronn, FRG) was used at
310 mn. The gradient separations were carried out using a Knauer Spherisorb ODS II (3 pm) …

Objective (s): 7-prenyloxycoumarins including 7-isopentenyloxycoumarin, AURAPTENE and
UMBELLIPRENIN, and HERNIARIN have been widely recognized as bioactive coumarins …

Coumarins are natural products characterized as 1, 2 benzopyrones widely distributed in
plants, as well as, in many species of fungi and bacteria. Nowadays, many synthetic …

Compound A, mp 172—3,[a]-12.83 showed UV spectrum similar to that of apiu-metin [1]
indicating the presence of a dihy-drofurocoumarin skeleton. The UV maxima were not …