作者:Germana Esposito、Marie-Lise Bourguet-Kondracki、Linh H. Mai、Arlette Longeon、Roberta Teta、Laurent Meijer、Rob Van Soest、Alfonso Mangoni、Valeria Costantino
DOI:10.1021/acs.jnatprod.6b00939
日期:2016.11.23
alkaloid chloromethylhalicyclamine B (1), together with the known natural compound halicyclamine B (2), was isolated from the extract of the sponge Acanthostrongylophora ingens. The structure of compound 1 was determined by spectroscopic means, and it was shown that 1 is produced by reaction of 2 with CH2Cl2 used for extraction. Compound 1 was a selective CK1δ/ε inhibitor with an IC50 of 6 μM, while the
从海绵Acanthostrongylophora ingens的提取物中分离出卤化生物碱氯甲基卤代环胺B(1)以及已知的天然化合物卤环胺B(2)。化合物1的结构通过分光光度法确定,显示出1是通过2与用于萃取的CH 2 Cl 2反应而产生的。化合物1是选择性CK1δ/ε抑制剂,IC 50为6μM ,而天然化合物2无活性。绝对配置1通过其ECD光谱的量子力学计算确定,这也确定了母体盐环胺B的先前未知的绝对构型(2)。通过NOESY数据验证的计算研究表明,化合物1尽管具有球形结构,但仍能与CK1δ的ATP结合位点有效相互作用,与已知的CK1δ抑制剂的平面结构有很大不同。这为设计新型的CK1δ/ε抑制剂类型开辟了道路。