申请人:University of Vermont
公开号:US04154943A1
公开(公告)日:1979-05-15
The invention relates to the preparation of vincadifformine. Tetrahydro-.beta.-carboline (II) is reacted with benzoyl chloride to provide 2-benzoyl-1,2,3,4-tetrahydro-9H-pyrido-[3,4b]-indole (III). Then compound (III) is reduced to give 2-benzyl-1,2,3,4-tetrahydro-9H-pyrido[3,4b]-indole (IV). Thereafter, compound (IV) is transformed by t-butyl hypochlorite into chloroindolenine derivative (V) which is immediately treated with thallium t-butyl methyl malonate to give t-butyl methyl 3-benzyl-1,2,3,4,5,6-hexahydroazepino-[4,5b]-indole-5,5-dicarboxylate (VI). Compound (VI) is then partly decarboxylated into methyl 3-benzyl-1,2,3,4,5,6-hexahydroazepino-[4,5b]-indole-5-carboxylate (VII). Compound (VII) is hydrogenated to give methyl 1,2,3,4,5,6-hexahydroazepino-[4,5b]-indole-5-carboxylate (IX). In an alternative embodiment, compound (VI) can be hydrogenated to methyl t-butyl 1,2,3,4,5,6-hexahydroazepino-[4,5b]-indole-5,5-dicarboxylate (VIII) which is then decarboxylated into compound (IX). Compound (IX) is condensed with 1-bromo-4-formyl-hexane to yield vincadifformine (I).
该发明涉及文卡地福明的制备。四氢-β-咔啉(II)与苯甲酰氯反应,得到2-苯甲酰-1,2,3,4-四氢-9H-吡啶[3,4b]-吲哚(III)。然后将化合物(III)还原,得到2-苄基-1,2,3,4-四氢-9H-吡啶[3,4b]-吲哚(IV)。随后,化合物(IV)通过叔丁基次氯酸酯转化为氯吲哚烯衍生物(V),立即用叔丁基甲基丙二酸钠处理,得到叔丁基甲基3-苄基-1,2,3,4,5,6-六氢吲哚[4,5b]-吲哚-5,5-二甲酸酯(VI)。化合物(VI)部分脱羧成为甲基3-苄基-1,2,3,4,5,6-六氢吲哚[4,5b]-吲哚-5-羧酸酯(VII)。化合物(VII)经氢化得到甲基1,2,3,4,5,6-六氢吲哚[4,5b]-吲哚-5-羧酸酯(IX)。在另一种实施方案中,化合物(VI)也可以经过氢化得到甲基叔丁基1,2,3,4,5,6-六氢吲哚[4,5b]-吲哚-5,5-二甲酸酯(VIII),然后脱羧成化合物(IX)。化合物(IX)与溴代4-甲醛己烷缩合得到文卡地福明(I)。