Several series of 45 acetophenone derivatives bearing various alkyl or benzyl substituents were conveniently synthesized and their structures characterized by 1H and 13C NMR spectroscopy, HRMS and single‐crystal X‐ray analysis. Their in vitro antifungalactivities against a panel of phytopathogenic fungi were evaluated by mycelial growth rate assay. Of them, 12 derivatives (e.g., 3a–c, 4c and 4e) exhibited
可以方便地合成几个带有各种烷基或苄基取代基的45种苯乙酮衍生物,并通过1 H和13 C NMR光谱,HRMS和单晶X射线分析对它们的结构进行表征。通过菌丝体生长速率测定法评估了它们对一组植物病原性真菌的体外抗真菌活性。在它们中,有12种衍生物(例如3a–c,4c和4e)对某些植物病原体表现出比作为阳性对照的商业杀菌剂氨甲唑更有效的抗真菌作用。特别是具有IC 50的化合物3b10–19μg/ mL的值被发现是该系列中最活跃的,可能是进一步优化的潜在先导结构。还讨论了一系列苯乙酮的初步结构-活性关系(SAR)研究。
2-acetylphenol analogs as potent reversible monoamine oxidase inhibitors
作者:Lesetja Legoabe、Jacobus Petzer、Anél Petzer
DOI:10.2147/dddt.s86225
日期:——
Based on a previous report that substituted 2-acetylphenols may be promising leads for the design of novel monoamine oxidase (MAO) inhibitors, a series of C5-substituted 2-acetylphenol analogs (15) and related compounds (two) were synthesized and evaluated as inhibitors of human MAO-A and MAO-B. Generally, the study compounds exhibited inhibitory activities against both MAO-A and MAO-B, with selectivity for the B isoform. Among the compounds evaluated, seven compounds exhibited IC50 values <0.01 mu M for MAO-B inhibition, with the most selective compound being 17,000-fold selective for MAO-B over the MAO-A isoform. Analyses of the structure-activity relationships for MAO inhibition show that substitution on the C5 position of the 2-acetylphenol moiety is a requirement for MAO-B inhibition, and the benzyloxy substituent is particularly favorable in this regard. This study concludes that C5-substituted 2-acetylphenol analogs are potent and selective MAO-B inhibitors, appropriate for the design of therapies for neurodegenerative disorders such as Parkinson's disease.
Synthesis of 4-substituted benzyl-2-triazole-linked-tryptamine-paeonol derivatives and evaluation of their selective inhibitions against butyrylcholinesterase and monoamine oxidase-B
作者:Jong Min Oh、Yujung Kang、Ji Hyun Hwang、Jeong-Ho Park、Woong-Hee Shin、Seul-Ki Mun、Jong Uk Lee、Sung-Tae Yee、Hoon Kim
DOI:10.1016/j.ijbiomac.2022.07.178
日期:2022.9
Cholinesterase (ChE) and monoamine oxidase (MAO) inhibitors are being used and developed to treat Alzheimer's disease (AD), a major type of dementia patients. Fifteen 4-substituted benzyl-2-triazole-linked-tryptamine-paeonol derivatives were synthesized and evaluated for their inhibitory activities against acetylcholinesterase (AChE), butyrylcholinesterase (BChE), monoamine oxidase-A (MAO-A), and B (MAO-B)