Synthesis and Stereochemical Assignment of Conioidine A: DNA- and HSA-Binding Studies of the Four Diastereomers
作者:Ryan Shaktah、Laura Vardanyan、Elroma David、Alexis Aleman、Dupre Orr、Lawrence A. Shaktah、Daniel Tamae、Thomas Minehan
DOI:10.1021/acs.jnatprod.0c00871
日期:2020.10.23
Conioidine A (1), isolated in 1993 with unknown relative and absolute configuration, was suggested to be a DNA-binding compound by an indirect technique. Four stereoisomers of conioidine A have been synthesized from d- and l-proline, and the natural product has been identified as possessing (4R,6R) absolute configuration. Binding of the conioidine diastereomers to calf thymus DNA (CT DNA) and human
Conioidine A ( 1 ) 于 1993 年以未知的相对和绝对构型分离出来,通过间接技术被认为是一种 DNA 结合化合物。已从d - 和l - 脯氨酸合成了 conioidine A 的四种立体异构体,并且已确定天然产物具有 (4 R ,6 R ) 绝对构型。已经通过荧光光谱法和等温滴定量热法 (ITC) 研究了 conioidine 非对映异构体与小牛胸腺 DNA (CT DNA) 和人血清白蛋白 (HSA) 的结合。所有立体异构体与 DNA 的结合至少比对照化合物 netropsin 弱一个数量级;然而,观察到 (4 R,6 S ) 立体异构体。