作者:Akihiro Ohta、Akihiko Kojima、Terumi Saito、Kayoko Kobayashi、Hideo Saito、Koichi Wakabayashi、Susumu Honma、Chiseko Sakuma、Yutaka Aoyagi
DOI:10.3987/com-91-5682
日期:——
(+)-Septorine, a metabolite of Septoria nodorum, was synthesized via alanyl-isoleucyl anhydride (2) from L-isoleucine at the first time. Compound (2) was led to a pyrazine-carboxaldehyde (13), which was treated with p-methoxymethoxy-phenylmagnesium bromide to afford an alcohol (14) in a quantative yield. The alcohol (14) was oxidized to a ketone (16), which was subjected to the Pummerer reaction and the following hydrolysis to give (+)-septorine.
(+)-Septorine 是 Septoria nodorum 的一种代谢物,首次通过 L-异亮氨酸经由 alanyl-isoleucyl anhydride (2) 合成。化合物 (2) 被转化为 pyrazine-羧甲醛 (13),后者与 p-甲氧基甲氧基苯基镁溴反应,定量产率下生成一种醇 (14)。该醇 (14) 被氧化为酮 (16),随后经 Pummerer 反应及后续水解生成 (+)-septorine。