Determination of absolute stereochemistry, total synthesis, and evaluation of peptides from the myxomycete Physarum melleum
作者:Shuwa Hanazawa、Midori A. Arai、Xiaofan Li、Masami Ishibashi
DOI:10.1016/j.bmcl.2007.11.005
日期:2008.1
stereochemistry of melleumin A (1) and B (2), novel peptide compounds isolated from the myxomycete Physarum melleum, was determined by synthesis of their segments and by a modified Mosher's method. Total synthesis of melleumin B (2) was achieved by a stereoselective method, which provided further evidence for all the absolute stereochemistries of melleumin B (2). The Wnt signal inhibitory activities of 2 and
melleumin A(1)和B(2),即从粘菌皮生胶体中分离出的新型肽化合物,通过合成其片段和改进的Mosher方法来确定其绝对立体化学。melleumin B(2)的全合成是通过立体选择性方法实现的,这为melleumin B(2)的所有绝对立体化学提供了进一步的证据。评估了2及其10R受体19的Wnt信号抑制活性。化合物19显示出对Wnt信号转录的中度抑制,这表明蜜勒白胺类似物可用作Wnt信号抑制剂。