Synthesis of the Proposed Structure of Damaurone D and Evaluation of Its Anti-inflammatory Activity
作者:Young Taek Han、Zheng Wang、Eun Ju Bae
DOI:10.1248/cpb.c15-00528
日期:——
Concise and efficient synthesis of the proposed structure of damaurone D is accomplished in five steps without protection-deprotection operations. The key feature of our synthesis includes a versatile aldol reaction of the benzofuranone, provided by selective α-halogenation and intramolecular O-alkylation. However, the H- and C-NMR spectral data of the synthesized damaurone D did not agree with previous reports. The structure of the synthesized damaurone D was confirmed using combined two dimensional (2D)-NMR analysis, including heteronuclear single quantum coherence (HSQC), heteronuclear multiple bond connectivity (HMBC), and nuclear Overhauser effect spectroscopy (NOESY). The synthesized damaurone D was found to exhibit potent anti-inflammatory activity in murine macrophage RAW264.7 cells, which was demonstrated by the findings that damaurone D treatment in cells resulted in the inhibition of lipopolysaccharide (LPS)-stimulated inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression and nitrite production.
Synthesis and anti-inflammatory activities of novel dihydropyranoaurone derivatives
作者:Zheng Wang、Eun Ju Bae、Young Taek Han
DOI:10.1007/s12272-017-0910-5
日期:2017.6
A novel series of dihydropyranoaurone derivatives were synthesized and evaluated as potential anti-inflammatory agents. Late-stage derivatization by versatile piperazine-catalyzed aldol reaction between dihydropyanobenzofuran intermediate 2 and diverse aldehydes readily afforded the novel dihydropyranoaurone analogs. Evaluation of the synthesized dihydropyranoaurone derivatives and related compounds
合成了一系列新的二氢吡喃酮衍生物并作为潜在的抗炎剂进行了评估。通过多功能哌嗪催化的二氢吡喃苯并呋喃中间体 2 和多种醛之间的羟醛反应进行后期衍生,很容易得到新型二氢吡喃酮类似物。对合成的二氢吡喃金酮衍生物和相关化合物抑制脂多糖刺激的 RAW 264.7 细胞的诱导型一氧化氮合酶和亚硝酸盐产生的评估提供了对金酮衍生物结构-活性关系的洞察。图形摘要