Procyanidin B6


Procyanidin B6 is a B type proanthocyanidin.
Procyanidin B6 is a catechin--catechin dimer. It can be found in grape seeds and in beer.

Chemical synthesis

Molar equivalents of synthetic -leucocyanidin and -catechin condense with exceptional rapidity at pH 5 under ambient conditions to give the all-trans-- and -bi- the all-trans-- and -tri-.