Artigo Revisado por pares

Dimeric and Trimeric Hydrolyzable Tannins from Quercus c occifera and Quercus s uber

2002; American Chemical Society; Volume: 65; Issue: 3 Linguagem: Inglês

10.1021/np010465i

ISSN

1520-6025

Autores

Hideyuki Ito, K. Yamaguchi, Taehoon Kim, Seddik Khennouf, Kamel Gharzouli, Takashi Yoshida,

Tópico(s)

Natural product bioactivities and synthesis

Resumo

Three new hydrolyzable tannins, cocciferins D(1) (1), D(2) (2), and T(1) (4), were isolated from the leaves of Quercus coccifera. Cocciferin D(2) (2) and two additional new tannins, cocciferins D(3) (3) and T(2) (5), were also obtained from the leaves of Quercus suber. Their oligomeric structures were elucidated on the basis of spectroscopic methods and chemical evidence. Compounds 2, 3, and 5 were rare oligomers possessing glucose cores with both open-chain and pyranose forms.

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