Synthesis of inositol 2-phosphate-quercetin conjugates

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Organic Synthesis

Background:

• Quercetin, a flavonoid, exhibits antiproliferative properties but is limited by poor water solubility.
• Low solubility hinders the pharmacological application and bioavailability of quercetin.

Purpose of the Study:

• To synthesize novel quercetin analogues with enhanced water solubility.
• To evaluate the in vitro antiproliferative and cytotoxic activity of these analogues.

Main Methods:

• Synthesis of two quercetin analogues via succinate diester linkage to myo-inositol-2-phosphate.
• Quantification of water solubility for the synthesized analogues.
• In vitro assessment of cytotoxicity and antiproliferative effects on colon adenocarcinoma (SW480) and glioblastoma (U87MG) cell lines.

Main Results:

• The synthesized quercetin analogues demonstrated significantly improved water solubility compared to quercetin.
• Quercetin analogue 2 (5-linked) exhibited water solubility exceeding 300 mg/mL.
• Conjugate 2 maintained comparable in vitro antiproliferative and cytotoxic activity to quercetin against tested cancer cell lines.

Conclusions:

• Linking quercetin to myo-inositol-2-phosphate via a succinate diester linkage effectively enhances water solubility.
• This modification preserves the antiproliferative efficacy of quercetin, suggesting potential for improved drug delivery and therapeutic applications.