Chemical Mediators: The Remarkable Structure and Host-Selectivity of Depsilairdin, a Sesquiterpenic Depsipeptide Containing a New Amino Acid
作者:M. Soledade C. Pedras、Paulos B. Chumala、J. Wilson Quail
DOI:10.1021/ol0478786
日期:2004.11.1
used a combination of NMR spectral data and X-ray crystallography. The absolute configuration was established using chemical degradation and synthesis of (3S,6R)-3,6-diisopropyl-2,5-morpholinedione and its (3R,6S) and (3R,6R) stereoisomers. Similar to the fungal pathogen, depsilairdin caused strong lesions only on brown mustard leaves but not on related species. [structure: see text]
描述了Depsilairdin的化学结构测定,Depsilairdin是一种由植物病原真菌Leptosphaeriamaculans / Phoma lingam产生的高度选择性的植物毒素。为了阐明异常的化学结构,结合使用了NMR光谱数据和X射线晶体学。绝对构型是通过化学降解和(3S,6R)-3,6-二异丙基-2,5-吗啉二酮及其(3R,6S)和(3R,6R)立体异构体的合成而建立的。与真菌病原体相似,十足抑素仅在芥菜芥末叶片上引起强烈损害,而对相关物种未造成强烈损害。[结构:见文字]