Antimicrobial Evaluation of Some Styryl Ketone Derivatives and Related Thiol Adducts
作者:E. Erciyas、H.I. Erkaleli、G. Cosar
DOI:10.1002/jps.2600830420
日期:1994.4
the conjugated ketones and their adducts, except the bis-Mannich base, have antimicrobial activity at 10 micrograms/mL. The Mannich base, 3, showed antibacterial property against only Escherichia coli at 1000 micrograms/mL in spite of containing a bioactive styryl ketone structure and having deamination ability. However, the thiol adducts, which do not contain any alpha,beta-unsaturated ketone function
合成了无环的α,β-不饱和酮,并在模拟的生理条件下用2-巯基乙醇或半胱胺盐酸盐处理。这些模型生物亲核试剂的硫醇基团在激活的双键上经历了Michael型加成反应。令人惊奇地,将3-亚苄基-2,4-戊二酮的双-曼尼希碱与2-巯基乙醇一起孵育,形成了5-[((2-羟乙基)硫代] -1-苯基-1-戊烯- 3-一(8),产率低。对化合物相对于革兰氏阳性细菌和革兰氏阴性细菌以及一种真菌的评价表明,除双曼尼希碱外,共轭酮及其加合物的抗菌活性为10微克/毫升。曼尼希基地3 尽管含有生物活性的苯乙烯基酮结构并具有脱氨能力,但仅对1000毫克/毫升的大肠杆菌显示出抗菌性能。然而,不包含任何α,β-不饱和酮官能团的硫醇加合物显示出与共轭酮衍生物相似的抗微生物效力,这可能是由于与微生物中的酶或辅酶的交换反应所致。