748142-72-5

Upstream product

• 22472-80-6 syn-(-)-pulegol 
• 748142-66-7 ethyl (1'R,2'R,4'R)-(+)-3-methyl-3-(1',2'-epoxy-4'-methyl-1'-cyclohexen-1'-yl)butanoate 
• 679396-10-2 ethyl (4'R)-(+)-3-methyl-3-(4'-methyl-1'-cyclohexen-1'-yl)butanoate 
• 89-82-7 pulegone 
• 748142-68-9 (5R,6S,8R)-(+)-6-hydroxy-4,4,8-trimethyl-1-oxaspiro[4.5]decan-2-one 

Relevant academic research and scientific papers

Synthesis of terpenoid lactones with the p-menthane system

Starting from (R)-(+)- and (S)-(-)-pulegone enantiomeric pairs of hydroxy lactones and keto lactones were obtained by Claisen rearrangement of cis-pulegols and lactonization of epoxy esters. The hydroxy lactones were reduced with Li-AlH4 in ord