The constitution and stereochemistry of 4β-hydroxy-18-norhibaene (1) and the 4α-epimer (2) are assigned on the basis of spectroscopic properties and dehydration products. Oxidation of erythroxylol A (3) with chromic acid gave nine isolable compounds including the two tertiary alcohols (1) and (2) which must arise from the novel oxidative cleavage of the primary alcohol. The epoxides (8), (9), and (10)
根据光谱性质和脱
水产物,确定4β-羟基-18-去
甲苯(1)和4α-顶基(2)的组成和立体
化学。用
铬酸氧化
赤藓醇A(3)得到9种可分离的化合物,其中包括两种叔醇(1)和(2),这必须来自伯醇的新的氧化裂解。衍生自(+)-hibaene,
赤藓醇A和
乙酸赤藓醇A的
环氧化物(8),(9)和(10)也已证明是天然存在的。