1: 76 percent / hydroxylamine hydrochloride, pyridine / ethanol / 18 h / Heating 2: pyridine, tosyl chloride / 18 h / Ambient temperature; camphor oxime, 7β-formylnorlongifolane oxime and 7β-acetylnorlongifolane oxime View Scheme

pyridine; p-toluenesulfonyl chloride 18 h; Ambient temperature; Yields of byproduct given;