Broussonin B
Broussonins A and B, new phytoalexins from diseased paper mulberry. Broussonin B can induce neurite outgrowth in PC-12 cells at concentration of 50 microg/ml, and show moderate inhibitory activities against a chymotrypsin-like activity of the proteasome.Broussonin B also can significantly inhibit adipocyte differentiation in 3T3-L1 cells as measured fat accumulation using Oil Red O assay.
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Biol Pharm Bull. 2005 Sep;28(9):1798-800.
7-hydroxy-3-(4-hydroxybenzyl)chroman and broussonin b: neurotrophic compounds, isolated from Anemarrhena asphodeloides BUNGE, function as proteasome inhibitors.[Pubmed:
16141565 ]
METHODS AND RESULTS:
The extract of Anemarrhenae Rhizoma (rhizomes of Anemarrhena asphodeloides BUNGE) showed neurotrophic activity toward rat pheochromocytoma (PC-12) cells. Bioassay-guided purification afforded four compounds, 2,6,4'-trihydroxy-4-methoxybenzophenone (1), 7-hydroxy-3-(4-hydroxybenzyl)chroman (2), Broussonin B (3), and cis-hinokiresinol (4).
CONCLUSIONS:
Compounds 1-3 induced neurite outgrowth in PC-12 cells at concentration of 50 microg/ml, while 4 was less active. In addition, compounds 2-4 showed moderate inhibitory activities against a chymotrypsin-like activity of the proteasome.
Bioorg Med Chem Lett. 2012 Apr 15;22(8):2760-3.
A new pancreatic lipase inhibitor from Broussonetia kanzinoki.[Pubmed:
22450131 ]
METHODS AND RESULTS:
A new phenolic compound, broussonone A (1) were isolated from the stem barks of Broussonetia kanzinoki (Moraceae), together with two diphenylpropanes, broussonin A (2), Broussonin B (3), two flavans, 7,4'-dihydroxyflavan (4), 3',7-dihydroxy-4'-methoxyflavan (5), and two flavones, 3,7-dihydroxy-4'-methoxyflavone (6), 3,7,3'-trihydroxy-4'-methoxyflavone (7).
CONCLUSIONS:
Compound 1 showed noncompetitive inhibitory activity on pancreatic lipase with an IC(50) of 28.4 μM. In addition, compounds 1-5 significantly inhibited adipocyte differentiation in 3T3-L1 cells as measured fat accumulation using Oil Red O assay.
Chemistry Letters,1980,3(3):339-340.
Broussonins A and B, new phytoalexins from diseased paper mulberry.[Reference:
WebLink]
METHODS AND RESULTS:
Isolation and structure elucidation of two phytoalexins (1 and 2), produced by diseased paper mulberry and designated as Broussonin A and Broussonin B, are described.
CONCLUSIONS:
These phytoalexins are characterized structurally by a 1,3-diphenylpropane skeleton.
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