Studies on the Metabolic Products of a Strain of Aspergillus fumigatus (DH 413). IV. Biosynthesis of Toluquinones and Chemical Structures of New Metabolites
作者:YUZURU YAMAMOTO、MIKIKO SHINYA、YASUHARU OOHATA
DOI:10.1248/cpb.18.561
日期:——
Four new compounds, spinulosin-hydrate (VI), spinulosin quinol-hydrate (II), dihydrospinulosin quinol (VII), and fumigatin chlorohydrin (VIII) were isolated from the culture medium of Aspergillus fumigatus DH 413 and Fersenius 4399 by ion exchange chromatography, and their chemical structures were determined. From the tracer experiments using 14C-labeled compounds, the metabolic relationships among metabolites were proposed as shown in Chart 4. The key different point between spinulosin producing and unproducing strains in Aspergillus fumigatus were also discussed.
通过离子交换色谱法,从曲霉 DH 413 和 Fersenius 4399 的培养液中分离出了四种新化合物,即刺五加苷水合物(Ⅵ)、刺五加苷喹啉水合物(Ⅱ)、二氢刺五加苷喹啉水合物(Ⅶ)和烟曲霉素氯水合物(Ⅷ),并确定了它们的化学结构。通过 14C 标记化合物的示踪实验,提出了代谢物之间的代谢关系,如图 4 所示。此外,还讨论了烟曲霉中产旋覆花苷菌株和不产旋覆花苷菌株之间的关键差异点。