Nocardiopsins: New FKBP12-Binding Macrolide Polyketides from an Australian Marine-Derived Actinomycete,<i>Nocardiopsis</i>sp.
作者:Ritesh Raju、Andrew M. Piggott、Melissa Conte、Zakir Tnimov、Kirill Alexandrov、Robert J. Capon
DOI:10.1002/chem.200902933
日期:2010.3.8
A marine‐derived actinomycete, Nocardiopsis sp. (CMB‐M0232), obtained from a sediment sample collected at a depth of 55 m off the coast of Brisbane, Australia, yielded two new macrolide polyketides. Structures for nocardiopsins A and B were assigned by detailed spectroscopic analysis, degradation and chemical derivatization. A Marfey’s analysis revealed an unexpected acid‐mediated partial racemization
源自海洋的放线菌,Nocardiopsis sp.。(CMB-M0232)是从澳大利亚布里斯班海岸附近55 m深度收集的沉积物样品中获得的,产生了两种新的大环内酯聚酮化合物。通过详细的光谱分析,降解和化学衍生化,确定了诺卡视菌素A和B的结构。马菲(Marfey)的分析显示,归入诺卡普丁菌素中的L-哌酸的意外酸介导的部分消旋作用。外消旋的范围是根据天然和合成氮的选择进行评估的酰基胡椒酸。虽然诺卡视蛋白酶不是抗菌,抗真菌或细胞毒性的,但它们确实表现出与免疫亲和素FKBP12的低微摩尔结合,这与它们与免疫抑制剂FK506和雷帕霉素的结构和生物合成关系一致。诺卡视视蛋白代表了进入生物活性化学空间的宝贵,排他性和隐蔽性区域的新切入点,该区域围绕FK506 /雷帕霉素药效团。