Woodfordin C, a macro-ring hydrolyzable tannin dimer with antitumor activity, and accompanying dimers from Woodfordia fruticosa flowers.
作者:Takashi YOSHIDA、Tong CHOU、Aya NITTA、Ken-ichi MIYAMOTO、Ryozo KOSHIURA、Takuo OKUDA
DOI:10.1248/cpb.38.1211
日期:——
Three new dimeric hydrolyzable tannins, woodfordins A, B and C, along with seven known hydrolyzable tannins, including oenothein B, a dimer exhibiting marked host-mediated antitumor activity, were isolated from an Indonesian crude drug, Sidowayah [dried flowers of Woodfordia fruticosa (L.) Kurz (Lythraceae)]. The structures of the new tannins were elucidated based on chemical and spectral evidence
从印尼粗制药物Sidowayah中分离了三种新的二聚体可水解单宁,伍德福德素A,B和C,以及7种已知的可水解单宁,其中Oenothein B是一种具有明显的宿主介导的抗肿瘤活性的二聚体。 L.)Kurz(Lythraceae)]。基于化学和光谱证据阐明了新单宁的结构。具有大环结构的Woodfordin C也被发现具有显着的抗肿瘤活性。