replacement of Trp3 by Phe3. Additionally, the total synthesis of 1 and 2 was accomplished by a solid-phase approach, confirming the absolute configuration of all chiral amino acids as l. Both the chilenopeptins (1 and 2) and tylopeptins (3 and 4) were evaluated for their potential to inhibit the growth of phytopathogenic organisms.
智利Sepedonium事务。根据
化学,分子和
生物学数据,采用多学科方法研究了从地方性牛肝菌(Boletus loyo Philippi)中分离出的拟青霉菌株KSH 883 。使用I
TS,EF1-α和RPB2条形码
基因的分子数据对该菌株进行分类学研究,证实了分离的菌株在S. chalcipori进化枝中的位置,但也建议将该进化枝分为三个不同的物种。两个新的线性15残基肽醇,分别命名为chilenopeptins A(1)和B(2),以及已知的肽醇tylopeptins A(3)和B(4))是从KSH 883菌株的半固体培养物中分离得到的。根据HRESIMS n实验并结合全面的1D和2D NMR分析,阐明了1和2的结构。因此,chilenopeptin A的(序列1)被确定为AC-AIB 1 -Ser 2 -色
氨酸3 -Aib 4 -Pro 5 -Leu 6 -Aib 7 -Aib 8 -Gln