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- All new compounds reported herein gave satisfactory elemental analyses
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- GLC analysis was performed on a 5-ft., stainless steel, 0.125 in. column packed with 3% SE-30 on Varaport 30, 100/120 mesh (Varian), flow rate 15 ml/min, 170° column temperature
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- Dimethylsulfoxide was distilled three times from a 95:5 ratio of calcium hydride (−40 mesh): sodium amide at ∼15 mm on to freshly activated molecular sieves type 4A
- We are grateful to Professor S. Nozoe for providing ir and nmr (100 MHz) spectra of natural trichodiene (1), trichoenone (9a), and trichodiene monoepoxide