Process for preparing alpha,omega-diamino acids
    3.
    发明授权
    Process for preparing alpha,omega-diamino acids 失效
    制备α,ω-二氨基酸的方法

    公开(公告)号:US4705892A

    公开(公告)日:1987-11-10

    申请号:US915829

    申请日:1986-10-16

    IPC分类号: C07C101/24

    CPC分类号: C07C227/20 Y10S530/86

    摘要: An improved process for preparing .alpha.,.omega.-diamino acids, such as D,L-homolysine, 2,8-diaminooctanoic acid, ornithine, lysine, or the like, comprising reaction of phthalic anhydride and an amino alcohol in a hydrocarbon solvent; treatment of the resulting phthalimide--N--(CH.sub.2).sub.n --OH derivative, without isolation thereof, with phosphorus tribromide or phosphorous pentachloride; alkylation of diethyl acetamidomalonate with the phthalimide--N--(CH.sub.2).sub.n --chloride or --bromide of the previous step, in the presence of, particularly, sodium hydride/dimethylformamide; standard acid hydrolysis and decarboxylation; selective protection via copper(II) chelation, N-specific acylation with benzyl chloroformate, and decomposition of the amino acid-copper(II) complex with alkaline thioacetamide; standard t-butoxycarbonyl acylation; and deprotection to obtain the desired .alpha.,.omega.-diamino acids.

    摘要翻译: 包括制备α,ω-二氨基酸如D,L-高赖氨酸,2,8-二氨基辛酸,鸟氨酸,赖氨酸等的改进方法,包括邻苯二甲酸酐和氨基醇在烃溶剂中的反应; 用三溴化磷或五氯化磷处理所得的邻苯二甲酰亚胺-N-(CH 2)n -OH衍生物,不分离; 在上述步骤的邻苯二甲酰亚胺-N-(CH 2)n - 氯化物或溴化物中,在特别是氢化钠/二甲基甲酰胺的存在下烷基化乙酰氨基马来酸二乙酯; 标准酸水解和脱羧; 通过铜(II)螯合的选择性保护,氯甲酸苄酯的N-特异性酰化和氨基酸 - 铜(II)配合物与碱性硫代乙酰胺的分解; 标准叔丁氧羰基酰化; 并去保护,得到所需的α,ω-二氨基酸。