STUDIES ON THE PREPARATION OF BIOACTIVE LIGNANS BY OXIDATIVE COUPLINGREACTION .3. SYNTHESIS OF POLYPHENOLIC BENZOFURAN AND COUMESTAN DERIVATIVES BY OXIDATIVE COUPLING REACTION OF METHYL (E)-3-(4-HYDROXY-2-METHOXYPHENYL)PROPENOATE AND THEIR INHIBITORY EFFECT ON LIPID-PEROXIDATION
S. Maeda et al., STUDIES ON THE PREPARATION OF BIOACTIVE LIGNANS BY OXIDATIVE COUPLINGREACTION .3. SYNTHESIS OF POLYPHENOLIC BENZOFURAN AND COUMESTAN DERIVATIVES BY OXIDATIVE COUPLING REACTION OF METHYL (E)-3-(4-HYDROXY-2-METHOXYPHENYL)PROPENOATE AND THEIR INHIBITORY EFFECT ON LIPID-PEROXIDATION, Chemical and Pharmaceutical Bulletin, 42(12), 1994, pp. 2536-2545
Three dihydrobenzofuran derivatives 11, 19, 22, a Pummerer's ketone 20
and a dimeric phenylpropanoid 24 were synthesized by oxidative coupli
ng reaction of methyl (E)-3-(4-hydroxy-2-methoxyphenyl)propenoate 10,
which was prepared from umbelliferone. The major product 11 was conver
ted into its acetate 21 and schizotenuin D analogs 27, 28, 29. A new c
oumestan derivative 13 was synthesized from 29. Ten synthetic compound
s thus obtained were tested for inhibitory effects on lipid peroxidati
on in rat brain homogenate.