1 7RD (R,E)-3-(4-azidobutyl)-4-hydroxy-5-methyl-5-(2-methylbuta-1,3-dien-1-yl)thiophen-2(5h)-one 1.000 2 TLJ (5r)-4-hydroxy-5-methyl-5-[(1e)-2-methylbuta-1,3-dien-1-yl]-3-propylthiophen-2(5h)-one 0.800 3 TLE (5r)-3-ethyl-4-hydroxy-5-methyl-5-[(1e)-2-methylbuta-1,3-dien-1-yl]thiophen-2(5h)-one 0.750 4 TLG (5r)-3-acetyl-4-hydroxy-5-methyl-5-[(1z)-2-methylbuta-1,3-dien-1-yl]thiophen-2(5h)-one 0.714 5 TLM Thiolactomycin 0.700