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Late-stage functionalization of Cycloastragenol and anti-inflammatory study
Yong Wang1, Yingchuan Que1, Yi Gu1
1State Key Laboratory of Synergistic Chem-Bio Synthesis, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Abstract:
Cycloastragenol (CAG), a bioactive compound from Huangqi, exhibits anti-inflammatory properties but has poor water solubility. This study enhanced CAG's solubility via C3-position modifications, synthesizing phosphorylated, sulfonated, and glycosylated derivatives with improved solubility. The phosphorylated derivative (11a) excelled in suppressing nitric oxide (NO) production in LPS-induced RAW264.7 macrophages. Further investigation revealed that both CAG and 11a effectively reduced levels of pro-inflammatory cytokines IL-6 and TNF-α, suggesting their anti-inflammatory effects are mediated through these pathways. Our findings indicate that chemical modifications can successfully enhance the solubility of CAG without compromising its bioactivity, with derivative 11a emerging as a particularly promising candidate for further development.
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