Procyanidins from cassia bark
Structure of active component in cinnamon based on Anderson
et al. (2004) JAFC, 52, 65‐70
T -u n it
O H
O
OH
O H
O H
O H
O
O
OH
O H
2
8
4
4
7
M -u n it
R
O
OH
OH
O H
OH
8
B -u n it
R
R
R = O H = (+ ) c a te c h in
R = O H = (-) e p ic a te c h in
