208766-51-2

Upstream product

• 1576-96-1 (E)-2-penten-1-ol 
• 122-04-3 4-nitro-benzoyl chloride 
• 6261-22-9 pent-2-yn-1-ol 
• 104530-72-5 ((2S,3S)-3-ethyloxiran-2-yl)methanol 

Downstream Products

• 69769-68-2 (2S,3R)-2,3-dihydro-6-[(1'R)-1'-methyl-2'-oxobutyl]-2,3,5-trimethyl-4H-pyran-4-one 

Relevant academic research and scientific papers

An efficient enantioselective synthesis of the acyl side chain of polyoxypeptins

An enantioselective synthesis of the acyl side-chain 3 of polyoxypeptins 1 and 2 was achieved by the Sharpless AE, with subsequent regioselective opening of the epoxyalcohol using a Grignard reagent in the presence of CuI, and an aldol condensation using Seebach's ester. The method reported has the advantage of a concise route and excellent enantiomeric purity, as well as starting from readily available chemical substrates and the use of inexpensive reagents.

Asymmetric epoxidation of α,β-unsaturated aldehydes catalyzed by a spiro-pyrrolidine-derived organocatalyst

The asymmetric epoxidation of α,β-unsaturated aldehydes, catalyzed by a spiro-pyrrolidine (SPD)-derived organocatalyst, has been accomplished with good diastereoselectivities (up to dr >20:1) and with high to excellent enantioselectivities (up to 99% ee).

Synthesis of stegobiol and its oxidation to stegobinone, the components of the female-produced sex pheromone of the drugstore beetle

Crystalline (-)-stegobinone [(2S,3R,1′R)]-2,3-dihydro-2,3,5-trimethyl-6-(1′-methyl-2′- oxobutyl)-4H-pyran-4-one (1)], the major component of the female-produced sex pheromone of the drugstore beetle (Stegobium paniceum L.), was synthesized by oxidation of crystalline and the minor component (-)-stegobiol [(2S,3R,1′S,2′S)-2,3-dihydro-2,3,5-trimethyl-6-(2′-hydroxy- 1′-methylbutyl)-4H-pyran-4-one (2)] under the appropriate conditions using Jones's chromic acid, Dess-Martin's periodinane or Ley's ruthenium reagent. The latter (2) was synthesized by employing lipase and the Sharpless epoxidation for the introduction of the proper chiral centers. The streostructure of 1 was comfirmed by X-ray analysis.