B type proanthocyanidin
B type proanthocyanidins are a specific type of proanthocyanidin, which are a class of flavanoids. They are oligomers of flavan-3-ols.
Dimeric B type proanthoanthocyanidins
These molecules have the molecular formula C30H26O12 (molar mass : 578.52 g/mol, exact mass : 578.142426).
Molecules with 4→8 bonds
The 4-8 bond can be in the alpha or in the beta position.
Molecules with 4→6 bonds
Trimers
Chemistry
B-type procyanidin (catechin dimer) can be converted to A-type procyanidin by radical oxidation[1].
See also
References
- ^ Conversion of procyanidin B-type (catechin dimer) to A-type: evidence for abstraction of C-2 hydrogen in catechin during radical oxidation. Kazunari Kondo, Masaaki Kurihara, Kiyoshi Fukuhara, Takashi Tanaka, Takashi Suzuki, Naoki Miyata and Masatake Toyoda, Tetrahedron Letters, Volume 41, Issue 4, 22 January 2000, Pages 485-488, doi:10.1016/S0040-4039(99)02097-3