Tannins and Related Compounds. L.1) Structures of Proanthocyanidin A-l and Related Compounds

Gen Ichiro Nonaka, Satoshi Morimoto, Itsuo Nishioka, Jun Ei Kinjo, Toshihiro Nohara

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


The structures of proanthocyanidin A-l (2) and two related proanthocyanidins, tentatively named A-4 (3) and A-5’ (4), have been established unambiguously on the basis of spectroscopic evidence and chemical correlations with the structurally known proanthocyanidin A-2 (1). Chemical transformation of singly linked proanthocyanidin B-l (6) into 2 also confirmed the stereostructure of 2.

Original languageEnglish
Pages (from-to)149-155
Number of pages7
JournalChemical and Pharmaceutical Bulletin
Issue number1
Publication statusPublished - Jan 1 1987

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Drug Discovery


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