Tallysomycin, a new antitumor antibiotic complex related to bleomycin. II. Structure determination of tallysomycins A and B.
作者:MASATAKA KONISHI、KYO-ICHIRO SAITO、KEI-ICHI NUMATA、TAKASHI TSUNO、KOKO ASAMA、HIROSHI TSUKIURA、TAKAYUKI NAITO、HIROSHI KAWAGUCHI
DOI:10.7164/antibiotics.30.789
日期:——
The structures of tallysomycins A and B, two major components of a new antitumor antibiotic complex, have been determined. They are glycopeptide antibiotics structurally related to bleomycin: four amino acid moieties and a disaccharide fragment which are the constituents of bleomycin molecule are also present in the tallysomycins. Tallysomycins A and B contain two new amino acids and a unique amino
塔利霉素A和B的结构已经确定,这是一种新的抗肿瘤抗生素复合物的两个主要成分。它们是在结构上与博来霉素相关的糖肽抗生素:在博来霉素中也存在四个氨基酸部分和二糖片段,它们是博来霉素分子的组成。Tallysomycins A和B含有两个新氨基酸和一个独特的氨基糖,即4-amino-4,6-dideoxy-L-talose,这是迄今为止在phleomycin-bleomycin类抗生素中尚未发现的。此外,塔利霉素A比博来霉素或塔利霉素B具有另外的氨基酸L-β-赖氨酸,因此具有更长的肽链。塔利霉素A和B具有相同的末端胺部分,即亚精胺。