selenide (3) derived from linalyl acetate (1) afforded the trans-p-methans (4) and (5), the structures of which were confirmed by their transformation into (6), (8), (9), and (11) and by alternative synthesis of these compounds.
                                    乙酸芳樟酯(1)衍生的β-羟基
硒酸(3)的酸催化环化反应得到反-对-甲基(4)和(5),它们的结构通过转化为(6)得到证实,(8),(9)和(11)以及通过这些化合物的替代合成。