A two-step practical synthesis of dehydroalanine derivatives
作者:Karell Pérez-Labrada、Edwin Flórez-López、Evelyn Paz-Morales、Luis D. Miranda、Daniel G. Rivera
DOI:10.1016/j.tetlet.2011.01.122
日期:2011.4
A two-step practical synthesis of dehydroalaninederivatives from commercially available starting materials is reported. The approach comprises an Ugi four-component reaction using 2-benzoylacetaldehyde, followed by an elimination process of the benzoate group. This protocol provided access to several dehydroalaninederivatives modified with diverse functional groups, which might be useful for further
Practical synthesis and cytotoxic evaluation of the pyrazino[1,2-b]-isoquinoline ring system
作者:Eduardo Hernández-Vázquez、Luis D. Miranda
DOI:10.1039/c6ob00431h
日期:——
A practical three-step protocol for the synthesis of pyrazino[1,2-b]isoquinolines is reported. This approach includes a one-pot parallel cyclization/cyclization parallel process followed by a non-common 6-endo Heck cyclization that transformed previously constructed Ugi adducts into diversely decorated tricyclic systems. Compounds bearing a t-butyl or 2,6-dimethylphenyl substituent showed significant
报道了一种实用的三步合成吡嗪并[1,2- b ]异喹啉的方法。该方法包括一锅并行环化/环化并行过程,然后是非通用的6- endo Heck环化,该过程将先前构建的Ugi加合物转化为装饰性很强的三环系统。带有叔丁基或2,6-二甲基苯基取代基的化合物显示出显着的细胞毒性活性。活性最高的类似物(6p)对HCT-15和K562表现出显着的活性(IC 50分别为41.8±3.3和57.7±2.1μM),对人牙龈成纤维细胞没有细胞毒性。