Synthesis and antimicrobial activity of optically active trans-cycloheximide isomers.
作者:Sachio KUDO、Takayuki ORITANI、Kyohei YAMASHITA
DOI:10.1271/bbb1961.48.2315
日期:——
Optically active trans-cycloheximide isomers such as cycloheximide [(2S, 4S, 6R, αR)-form (1)], naramycin B[(2S, 4S, 6R, αR)-form (4)], and new stereoisomers (2S, 4S, 6S, αS)-form (8) and (2S, 4S, 6R, αS)-form (9) were synthesized by an aldol condensation of trans-2, 4-dimethyl-1-cyclohexanone (5b), with 4-(2-oxoethyl)-2, 6-piperidinedione (6). The antimicrobial activity of trans-cycloheximide isomers (1, 4, 8, and 9) was examined against S. cerevisiae and P. oryzae. The stereoisomers 1 and 4 exhibited marked antimicrobial activity against both microorganisms as compared with their C-α-epimers 8 and 9.
具有光学活性的反式环己酰亚胺异构体,如环己酰亚胺[(2S,4S,6R,αR)-形式(1)]、纳拉霉素B[(2S,4S,6R,αR)-形式(4)]以及新的立体异构体(2S,4S,6S,αS)-形式(8)和(2S,4S,6R,αS)-形式(9),通过反式-2,4-二甲基-1-环己酮(5b)与4-(2-氧乙基)-2,6-哌啶二酮(6)的aldol缩合反应合成。测试了反式环己酰亚胺异构体(1,4,8,9)对酿酒酵母和大米菌的抗菌活性。与它们的C-α-表异构体8和9相比,立体异构体1和4对两种微生物显示出明显的抗菌活性。