Unprecedented One-Pot Sequence for the Synthesis of Tetrahydroquinoline Alkaloids and Preliminary Evaluation of their Antibacterial Activity
作者:Gaspar Diaz-Muñoz、Izabel Miranda、Suélen Sartori、Gabriel Dias、Markus Kohlhoff、Gislaine Purgato、Marisa Diaz
DOI:10.21577/0103-5053.20180145
日期:——
A novel one-pot sequence (in 2 or 3 steps) was developed for the synthesis of the tetrahydroquinoline alkaloids (±)-galipinine, (±)-cuspareine, (±)-galipeine and (±)-angustureine, and the derivative (±)-11-methoxy-5,6,6a,7,8,13-hexahydro-13a-aza-benzo[5,6]cyclohepta [1,2-a]naphthalene-12-ol from their respective Wittig adducts in moderate and high yields. The solvolytic N-methylation reaction was shown
开发了一种新颖的一锅法序列(分2步或3步),用于合成四氢喹啉碱生物碱(±)-半胱氨酸,(±)-cuspareine,(±)-半乳糖苷和(±)-angustureine和衍生物±)-11-甲氧基-5,6,6a,7,8,13-六氢-13a-氮杂-苯并[5,6]环庚基[1,2-a]萘-12-ol从各自的Wittig加合物中中等和高产。溶剂化的N-甲基化反应显示出是由Pt催化的,Pt是通过还原PtO2原位产生的。化合物对分离自患有乳腺炎的母牛的金黄色葡萄球菌菌株的生物膜抑制作用和抗菌活性的评估表明,生物碱衍生物是一种有前途的候选抗生素药物。