Synthesis, docking study and relaxant effect of 2-alkyl and 2-naphthylchromones on rat aorta and guinea-pig trachea through phosphodiesterase inhibition
作者:Fernando Rodríguez-Ramos、Andrés Navarrete、Martín González-Andrade、Carlos Alarcón、Alejandro Aguilera-Cruz、Adelfo Reyes-Ramírez
DOI:10.1016/j.bioorg.2013.07.001
日期:2013.10
heated at reflux temperature, yielding the chromones 11a–11h. Evaluation of the vasorelaxant effect of 4, 11a–11h on rat aorta demonstrated that potency decreases with branched alkyl groups. Whereas the EC50 of compound 11d (substituted by an n-hexyl group) was 8.64 ± 0.39 μM, that of 11f (substituted by an isobutyl group) was 14.58 ± 0.64 μM. Contrarily, the effectiveness of the compound is directly
色酮(4)构成分离为天然产物的各种类黄酮的基本结构,能够舒缓平滑肌。这与高血压,哮喘和慢性阻塞性肺疾病的治疗有关。前者涉及血管平滑肌(VSM)的收缩,后两者涉及气道平滑肌(ASM)的支气管收缩。类黄酮放松肌肉组织的主要机制之一是抑制VSM和ASM中都存在的磷酸二酯酶(PDE)。因此,一项研究旨在通过抑制PDE来分析色酮衍生物在血管舒张和支气管舒张中的构效关系。对接研究表明,这些色酮在PDE的催化位点结合。所以,我们合成了在C-2位被烷基和萘基取代的色酮的类似物。这些化合物是在DBU和吡啶存在下由2-羟基苯乙酮和酰氯合成的,通过将反应温度从80改变为30°C,并使用二氯甲烷作为溶剂,改变了报道的3-酰基色酮合成的方法。相应的酚酯10a – 10h。这些化合物用等价的DBU,吡啶作为溶剂环化,并在回流温度下加热,得到色酮11a - 11h。的的血管舒张作用的评价4,11A - 11H上大鼠主动