Overview
N-tert-Butoxycarbonyl-D-prolinol (N-Boc-D-prolinol) is a chiral building block critical for synthesizing enantioselective compounds in pharmaceuticals and agrochemicals. The tert-butoxycarbonyl (Boc) group protects the amine functionality, while the hydroxymethyl moiety enables further derivatization. Its D-configuration ensures compatibility with biologically active targets requiring specific stereochemistry. As a non-natural amino alcohol derivative, it bridges peptide chemistry and small-molecule drug design. The compound is typically supplied as a crystalline solid with high optical purity, meeting rigorous standards for research and industrial applications.
Physical and Chemical Properties
N-Boc-D-prolinol exhibits moderate stability under neutral conditions but is sensitive to acidic or basic hydrolysis, which cleaves the Boc group. Its melting point range (45-50°C) reflects its crystalline nature, though polymorphic forms may exist. The compound’s solubility profile favors polar aprotic solvents, making it suitable for reactions like Mitsunobu or esterification. The chiral center at the proline ring confers stereoselectivity in reactions, a property leveraged in asymmetric catalysis. Hygroscopicity is a minor concern, necessitating dry storage to prevent degradation. Spectroscopic data (e.g., NMR, IR) align with its bicyclic structure, with characteristic Boc carbonyl absorption at ~1700 cm−1.
Main Applications
In pharmaceuticals, N-Boc-D-prolinol is a precursor to protease inhibitors, antiviral agents, and GPCR modulators. Its rigid pyrrolidine ring mimics peptide backbones, enabling peptidomimetic designs with enhanced metabolic stability. The Boc group simplifies purification during multi-step syntheses. The compound also serves as a ligand in asymmetric hydrogenation and organocatalysis, where its hydroxyl group coordinates metals or activates substrates. Agrochemical researchers use it to construct chiral herbicides. Recent studies explore its role in mRNA vaccine delivery systems due to its biodegradable scaffold.
Safety and Storage
As a low-toxicity solid, N-Boc-D-prolinol requires standard laboratory precautions: gloves, goggles, and fume control. No severe acute hazards are reported, but dust inhalation may irritate respiratory tracts. Spills should be contained with absorbent materials and disposed of as hazardous waste. Long-term storage demands moisture-proof packaging with desiccants, ideally under nitrogen. Refrigeration (2-8°C) extends shelf life, while repeated freeze-thaw cycles should be avoided. Compatibility testing is advised for large-scale reactions involving strong oxidizers or reductants.
B2B Procurement Guide
Procure N-Boc-D-prolinol from certified fine chemical suppliers with ISO/GMP compliance. Key due diligence includes verifying enantiomeric excess (via chiral HPLC or optical rotation), residual solvent levels, and heavy metal content. Technical specifications should match USP/EP standards if intended for drug development. Bulk buyers (1kg+) may negotiate pricing tiers or request custom synthesis with tailored purity (e.g., >99.5%). Lead times vary; allocate 2-6 weeks for overseas shipments. Consider dual sourcing to mitigate supply chain risks, especially for cGMP-grade material. Sample testing is recommended before large commitments.
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