2-Acetyl-3,5,5,9-tetra­methyl-6,7,8,9-tetra­hydro-5H-benzocyclo­hepten-7-one

The title compound, C17H22O2, was semi-synthesized from a mixture of α-atlantone (Z) and α-atlantone (E), which were isolated from the essential oil of the Atlas cedar (cedrus atlantica). The mol­ecule consists of fused six- and seven-membered rings. The seven-membered ring is in a screw-boat conformation

3β-Tosyloxy-elemo-lanost-8-en-24-one

The sodium periodate is prepared in situ with equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C.[...

3β-Acetoxy-elemo-lanost-8-en-24-one

The sodium periodate is prepared in situ with a equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C. After 15 min, 5 ml of CCl4, 5 ml of H3CCN and 93.03mg (0.12mmol) of ruthenium trichloride1,2 were added.[...

4α,14α,Dimethyl-5α-cholest-8-en-3-one thiadiazoline

n/