Tannins and Related Compounds. LIX.1)Aesculitannins, Novel Proanthocyanidins with Doubly-Bonded Structures from Aesculus hippocastanum L.

Satoshi Morimoto, Gen Ichiro Nonaka, Itsuo Nishioka

Research output: Contribution to journalArticle

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Abstract

A chemical examination of the seed shells of Aesculus hippocastanum L. has led to the isolation of proanthocyanidins A-6 (10) and A-7 (11), and aesculitannins A (12), B (13), C (14), D (15), E (16), F (17) and G (18). On the basis of chemical and spectroscopic evidence, proanthocyanidins A-6 (10) and A-7 (11) have been determined to be A-type dimers each possessing a C-4, C-6 interflavanoid linkage, while aesculitannins A (12), B (13), C (14), D (15), E (16), F (17) and G (18) have been characterized as oligomeric proanthocyanidins possessing A-type unit(s) in each molecule. In addition, the presence of (— )-epicatechin (1), proanthocyanidins B-2 (2), B-5 (3), A-2 (4), A-4 (5) and C-l (6), epicatechin-(4β→6)-epicatechin-(4β→6)-epicatechin (7), and cinnamtannins B1(8) and B2 (9) was also demonstrated.

Original languageEnglish
Pages (from-to)4717-4729
Number of pages13
JournalChemical and Pharmaceutical Bulletin
Volume35
Issue number12
DOIs
Publication statusPublished - Jan 1 1987

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Aesculus
Proanthocyanidins
Catechin
Tannins
varespladib methyl
Dimers
Seed
Seeds
Molecules

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Drug Discovery

Cite this

Tannins and Related Compounds. LIX.1)Aesculitannins, Novel Proanthocyanidins with Doubly-Bonded Structures from Aesculus hippocastanum L. / Morimoto, Satoshi; Nonaka, Gen Ichiro; Nishioka, Itsuo.

In: Chemical and Pharmaceutical Bulletin, Vol. 35, No. 12, 01.01.1987, p. 4717-4729.

Research output: Contribution to journalArticle

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