作者:Susumu Kobayashi、Kouji Kuramochi、Toshiaki Aoki、Atsuo Nakazaki、Shinji Kamisuki、Masahiro Takeno、Kensuke Ohnishi、Kuniaki Kimoto、Nobuo Watanabe、Takashi Kamakura、Takao Arai、Fumio Sugawara
DOI:10.1055/s-0028-1083634
日期:2008.12
Neoechinulin A isolated from Eurotium rubrum showed cytoprotection activity against peroxynitrite generated from SIN-1 [3-(4-morpholinyl)sydnonimine hydrochloride] in PC12 cells. As we are interested in this biological activity, we synthesized neoechinulin A and its derivatives. In this article, we fully report the isolation of natural neoechinulin A and B, a total synthesis of (-)-neoechinulin A, and determination of the absolute configuration of natural neoechinulin A. In addition, we describe herein syntheses of neoechinulin A derivatives, including a biotinylated neoechinulin A derivative, which will be useful for identification of the binding proteins of neoechinulin A.
来自红酵母菌的Neoechinulin A对PC12细胞中由SIN-1[3-(4-吗啉基)西东胺盐酸盐]产生的过氧亚硝酸盐具有细胞保护活性。由于我们对这种生物活性感兴趣,因此合成了Neoechinulin A及其衍生物。本文中,我们详细报道了天然Neoechinulin A和B的分离、(-)-Neoechinulin A的全合成以及天然Neoechinulin A绝对构型的确定。此外,本文还描述了Neoechinulin A衍生物的合成,包括生物素化的Neoechinulin A衍生物,这将有助于鉴定Neoechinulin A的结合蛋白。