Tannins and Related Compounds. CXIX. Samarangenins A and B, Novel Proanthocyanidins with Doubly Bonded Structures, from Syzygium samarangens and S. aqueum

Gen-ichiro NONAKA; Yukari AIKO; Kousuke ARITAKE; Itsuo NISHIOKA

doi:10.1248/cpb.40.2671

野中源一郎, 愛甲ゆかり, 有竹浩介, 西岡五夫

著者情報

キーワード: Syzygium samarangens, Syzygium aqueum, Myrtaceae, proanthocyanidin, prodelphinidin, samarangenin A, samarangenin B, (-)-epigallocatechin, (-)-epigallocatechin 3-O-gallate, tannin

ジャーナルフリー

1992 年 40 巻 10 号 p. 2671-2673

DOI https://doi.org/10.1248/cpb.40.2671

詳細

抄録

Two proanthocyanidins named samarangenins A (1) and B (2) have been isolated, together with a variety of flavan-3-ols, proanthocyanidins and hydrolyzable and complex tannins, from the leaves of Syzygium samarangens (BLUME) MERR. et PERRY and S.aqueum (BURM f.) ALSTON (=Eugenia aquea BURM.). (Myrtaceae). Compounds 1 and 2 were characterized on the basis of spectroscopic and chemical evidence as novel dimeric proanthocyanidins, in which two flavanoid units are doubly linked through ether and carbon-carbon bonds.

責任著者(Corresponding author)

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