Novel High Energy Intermediate Analogues with Triazasterol-Related Structures as Potential Inhibitors of the Ergosterol Biosynthesis II [1]. Optimization of the Synthesis of 1,6,7,11b-Tetrahydro-2 H pyrimido[4,3- a ] isoquinolin-4-amines as Parent Compounds of Novel 8,13,15-Triazasteroids
作者:Edith G��nitzer、Asbj�rn Punkenhofer
DOI:10.1007/s00706-002-0559-7
日期:2003.5.1
biosynthesis, were investigated. Starting from β-phenylethylamines the corresponding 3-chloro- N -phenethylpropionamides were prepared and transformed into N -phenethyl-3-phthalimidopropionamides. These amides were cyclized via Bischler-Napieralski reaction to yield after hydrolytic deprotection 1-(aminoethyl)tetrahydroisoquinolines. The 1,6,7,11b-tetrahydro-2 H -pyrimido[4,3- a ]isoquinoline ring system
有效合成1,6,7,11b-四氢-2 H- 嘧啶[4,3- a ]异喹啉-4-胺及其9-甲氧基衍生物的各种途径 ,被设计为稳定的三环三氮杂类似物研究了模拟麦角固醇生物合成的碳正离子高能中间体(HEI)的正电荷。从β-苯乙胺开始,制备了相应的3-氯 -N- 苯乙基丙酰胺,并将其转化为 N-苯乙基-3-邻苯二甲酰亚胺基丙酰胺 。这些酰胺经 Bischler-Napieralski 反应环化 ,在水解脱保护1-(氨基乙基)四氢异喹啉后产生。1,6,7,11b-四氢-2 H- 嘧啶基[4,3- 一个 ]异喹啉环系统然后通过与各种碳酸衍生物的双环二胺的缩合(二硫化碳,硝基胍,原碳酸四乙酯)建立。连同所施加的反应顺序,发生了意外的副反应。在同核和异核相关的1D和2D NMR实验的基础上,证明并完全指定了所有分离的化合物的结构。在 体外 与八个致病真菌标准面板的抗真菌敏感性试验揭示了pyrimidois