267899-26-3

Upstream product

• 50444-99-0 (1R,2S,5R)-menthyl-(S)-p-toluenesulfinate 
• 120584-77-2 6-bromo-8,8-dimethyl1,4-dioxaspiro<4.4>non-6-ene 
• 21428-66-0 2-bromo-4,4-dimethylcyclopent-2-en-1-one 

Downstream Products

• 267899-13-8 methyl (3aS,6aR)-4,5,6,6a-tetrahydro-6,6-dimethyl-4-oxo-3a-[(S)-p-tolylsulfinyl]-2H-cyclopenta[b]furan-D^3(3aH),α-acetate 
• 267899-12-7 4,4-dimethyl-2-[(S)-p-tolylsulfinyl]-2-cyclopenten-1-one 

Relevant academic research and scientific papers

Enantioselective double Michael addition/cyclization with an oxygen- centered nucleophile as the first step in a concise synthesis of natural (+)- asteriscanolide

The total synthesis of (+)-asteriscanolide (1) starting from 2-bromo- 4,4-dimethylcyclopentenone has been accomplished. The synthetic route features two key steps. The first step is an unprecedented Michael-Michael reaction sequence that involves a hetero