设计、合成了一系列新型2-oxo-(1-oxo-2,8-diazaspiro[4.5]decane-8-yl)乙基哌啶甲酰胺衍生物,并通过1 H NMR、13 C NMR和HRMS光谱对其进行了表征。评估了所有 18 种新制备的化合物对几丁质合成酶 (CHS) 的抑制作用和体外抗真菌活性。酶法分析表明,化合物5h对CHS显示出优异的抑制活性,IC 50值为0.10 mM,化合物5b、5d和5q对几丁质合酶显示出良好的抑制作用,IC 50值分别为0.13 mM、0.18 mM和0.15 mM , 而 IC 50ployoxin B 的值为 0.08 mM。同时,这些化合物中的其他化合物对几丁质合酶表现出中等的抑制效力。抗真菌试验表明,与对照药物氟康唑和多氧菌素 B 相比,化合物5h对这些测试菌株(包括白色念珠菌、烟曲霉、新型念珠菌和黄曲霉)具有优异的抗真菌活性。其优异的抗真菌活性与其优异的几
A series of novel piperazine or piperidine-containing non-covalent peptidyl derivatives possessing a neopentyl-asparagine residue were designed, synthesized and evaluated as proteasome inhibitors. All target compounds were screened for their 20S proteasome chymotrypsin-like inhibitory activities, and 15 ones displayed more potentactivities than carfilzomib with IC50 values lower than 10 nM. Subsequently
A series of non-covalent piperidine-containing peptidyl derivatives with various substituents at side chains of different residues were designed, synthesized and evaluated as proteasome inhibitors. After proteasome inhibitory evaluations of all the synthesized target compounds, selected ones were tested for their anti-proliferation activities against three multiple myeloma (MM) cell lines. 8 analogues
The present invention aims at providing compounds having therapeutic effects due to a DPP-IV inhibitory action, and satisfactory as pharmaceutical products.
The present inventors have found that derivatives having a substituent introduced into the γ-position of proline represented by the formula (I)
wherein each symbol is as defined in the specification, have a potent DPP-IV inhibitory activity, and completed the present invention by increasing the stability.
The present invention aims at providing compounds having therapeutic effects due to a DPP-IV inhibitory action, and satisfactory as pharmaceutical products.
The present inventors have found that derivatives having a substituent introduced into the &ggr;-position of proline represented by the formula (I)
1
wherein each symbol is as defined in the specification, have a potent DPP-IV inhibitory activity, and completed the present invention by increasing the stability.