The mixture of cis-(I) and trans-(Ph/CO2Et)-3-ethoxycarbonyl-4-phenyl-4-(6-tetralyl)but-3-enoic acid (VII) has been converted into ethyl 4-acetoxy-5,6,7,8-tetrahydro-1-phenylphenanthrene-2-carboxylate (IIa) and ethyl 4-acetoxy-1-(6-tetralyl)-2-naphthoate (VIIIa). The derived phenolic acids (IIb) and (VIIIb) were converted into methyl 4-methoxy-1-phenylphenanthrene-2-carboxylate (VIc), and 4-methox
的混合物的顺式- (I)和反式- (PH / CO 2 ET)-3-乙氧羰基-4-苯基-4-(6- tetralyl)丁-3-烯酸(VII)已被转化为乙基4-乙酰氧基5,6,7,8-四氢-
1-苯基菲-2-
羧酸酯(IIa)和4-乙酰氧基-1-(6-四烯丙基)-
2-萘甲酸乙酯(VIIIa)。将衍生的
酚酸(IIb)和(VIIIb)转化为4-甲氧基-
1-苯基菲-2-
羧酸甲酯(VIc)和4-甲氧基-1-(2-
萘基)-
2-萘甲酸(XIId) , 分别。后者被脱羧成4-甲氧基-1,2'-联
萘基(XIIe)。顺式和反式的酸酐用
氯化铝将-3-羧基-4-(6-四烯丙基)-4-苯基丁-3-烯酸异构化成相应的
茚基
乙酸(Ⅴ)和(XI),然后用
乙酸钠在
乙酸酐中环化。然后
水解和甲基化得到相应的
芴酮(IIIc)和(IXc),与通过环化(IIb)和(VIIIb)的甲基醚获得的
芴酮相同。环化的顺式(PH / CO 2 ET)