Synthesis of .BETA.- and .GAMMA.-Carbolines and Their N-Oxides from 2(or 3)-Ethynylindole-3(or 2)-carbaldehydes.
作者:Takao SAKAMOTO、Atsushi NUMATA、Hironori SAITOH、Yoshinori KONDO
DOI:10.1248/cpb.47.1740
日期:——
Isoquinoline-type carbolines i.e. β-, and γ-carbolines and their N-oxides were synthesized from 2(or 3)-ethynylindole-3(or 2)-carbaldehydes, which were synthesized by electrophilic substitution with dichloromethyl methyl ether in the presence of titanium tetrachloride, or by lithiation with tert-butyllithium, followed by formylation with methyl formate.
Isoquinoline型的碳咯烯,即β-和γ-碳咯烯及其N-氧化物,是通过2(或3)-乙炔基吲哚-3(或2)-碳醛合成的。这些碳醛是通过在四 chloride 钛存在下用二氯甲基醚进行电亲核取代,或用叔丁基锂进行锂化,然后用甲酸甲酯进行甲酰化合成的。