Procyanidin A1 Explained

Procyanidin A1 is an A type proanthocyanidin dimer.

It is an epicatechin-(2β→7,4β→8)-catechin dimer found in Rhododendron spiciferum,[1] in peanut skins[2] and in Ecdysanthera utilis.[3]

Procyanidin B1 can be converted into procyanidin A1 by radical oxidation using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals under neutral conditions.[4]

Notes and References

  1. 19686816 . 2009 . Liu . YZ . Cao . Ye . Wang . Song . Wang . Wang . Li . Deng . Immunomodulatory effects of proanthocyanidin A-1 derived in vitro from Rhododendron spiciferum . 10.1016/j.fitote.2009.08.005 . Fitoterapia . YG . JQ . WG . KJ . XL . CH . RT . XM . 81 . 2 . 108–14 .
  2. A-type proanthocyanidins from peanut skins . Hongxiang Lou . Yamazaku Y. . Sasaku T. . Uchida M. . Tanaka H. . Oka S. . 1999 . Phytochemistry . 51 . 2 . 297–308 . 10.1016/S0031-9422(98)00736-5.
  3. 10.1021/np010414l . Immunomodulatory Proanthocyanidins from Ecdysantherautilis . 2002 . Lin . Lie-Chwen . Kuo . Yuh-Chi . Chou . Cheng-Jen . Journal of Natural Products . 65 . 4 . 505–8 . 11975489.
  4. 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, 22 January 2000, Volume 41, Issue 4, Pages 485–488,

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Procyanidin A1".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.