Stereoselective preparation of pyridoxal 1,2,3,4-tetrahydro-β-carboline derivatives and the influence of their absolute and relative configuration on the proliferation of the malaria parasite Plasmodium falciparum
作者:Renate Brokamp、Bärbel Bergmann、Ingrid B. Müller、Stefan Bienz
DOI:10.1016/j.bmc.2014.01.057
日期:2014.3
We have selectively synthesized by Pictet–Spengler condensation of tryptophan and pyridoxal the four stereoisomers of a pyridoxal β-carboline derivative that was designed to inhibit the proliferation of Plasmodium falciparum. Biological investigation of the four compounds revealed that they all inhibit the growth of P. falciparum. With an IC50 value of 8 ± 1 μM, the highest inhibitory effect on the
我们通过Pictet - Spengler缩合了色氨酸和吡ido醛选择性合成了吡ido醛β-咔啉衍生物的四种立体异构体,这些衍生物旨在抑制恶性疟原虫的增殖。对这四种化合物的生物学研究表明,它们均抑制恶性疟原虫的生长。IC 50值为8±1μM,对于从d-色氨酸获得的1,3-反式取代的四氢-β-咔啉,发现了对寄生虫增殖的最高抑制作用。发现其对映异构体活性较低,而两个非对映异构体为顺式产品明显无效。显然,为了获得高活性,化合物的取代四氢吡啶单元的羧基的羧基必须具有明显的空间取向,而分子的绝对构型则没有那么重要。