109801-76-5

Upstream product

• 109801-88-9 C₁₅H₂₆O₇ 
• 109801-91-4 (S)-4-<(isobutoxycarbonyl)oxy>-5-methyl-3-oxohexanoic acid ethyl thio ester 
• 109801-94-7 Leu-OCpa*HCl 

Downstream Products

• 109801-68-5 (S)-2-((S)-4-Hydroxy-5-methyl-3-oxo-hexanoylamino)-4-methyl-pentanoic acid 2-(4-chloro-phenyl)-2-oxo-ethyl ester 

Relevant academic research and scientific papers

Copper(I)-Promoted Condensation of α-Amino Acids with β-Keto Thio Esters: Synthesis of N-Acylated L-Leucine Derivatives Containing (S)-4-Hydroxy-5-methyl- and (S)-4-Hydroxy-2,5-dimethyl-3-oxohexanoic Acid

Acylation of lithium enolates of ethyl acetate and ethyl thioacetate with derivatives of (S)-2-hydroxy-3-methylbutanoic acid, activated at the carboxyl function as the acid chloride, unsymmetrical carbonic anhydride, or active ester, furnished the corresp