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    • 3. 发明授权
    • Process for preparing 2-deroxy-3-desamino-2,3-epimino-aminoglycosides and intermediates useful therein
    • 制备2-脱氧-3-脱甲酰氨基-2,3-苯二胺 - 氨基糖苷的方法及其有用的中间体
    • US3868360A
    • 1975-02-25
    • US29998372
    • 1972-10-24
    • SCHERING CORP
    • DANIELS PETER J LWEINSTEIN JAY
    • C07H15/226C07C47/18
    • C07H15/226
    • 2''''-Deoxy-3''''-desamino-2'''',3''''-epimino-aminoglycosides useful as intermediates in preparing antibacterially active 2''''deoxyaminoglycosides, are prepared from antibacterially active aminoglycosides having a 2''''-hydroxyl group and a 3''''-primary or secondary amino function, by a process which comprises protecting primary amino groups and secondary amino groups capable of oxazolidine formation with an aldehyde and a neighboring hydroxyl group, by conversion thereof to Schiff base-oxazolidine condensation products with aldehydes (preferably benzaldehyde), converting any protectable primary and secondary hydroxyl groups to a trityl ether or to a cyclic ketal or acetal, treating said N-protected-O-protected-aminoglycoside with a hydrocarbonsulfonyl halide in a tertiary amine, treating the resulting N-protected-Oprotected-2''''-O-hydrocarbonsulfonylaminoglycoside (novel intermediates) with dilute aqueous acid to a pH in the range of from about 1 to about 5, and converting the resulting 2''''-Ohydrocarbonsulfonylaminoglycoside to a 2''''-deoxy-3''''-desamino2'''',3''''-epimino-aminoglycoside either by spontaneous transformation or heating in a lower alkanol alone or together with an alkali metal salt of said alkanol. The 2''''-deoxy-3''''desamino-2'''',3''''-epiminoaminoglycosides upon hydrogenation followed by acid hydrolysis of any ketal or acetal functions are converted to a product mixture comprising an antibacterially active 2''''-deoxyaminoglycoside isolatable via chromatographic techniques.
    • 用作制备抗菌活性2'-脱氧氨基糖苷类的中间体的“脱氧-3” - 脱氨基-2“,3” - 亚氨基 - 氨基糖苷类,由具有2“ - 羟基的抗菌活性氨基糖苷 和3“ - 伯或仲氨基功能,通过一种方法,该方法包括用醛和相邻的羟基保护伯氨基和能够形成恶唑烷的仲氨基,通过将其转化成与醛的席夫碱 - 恶唑烷缩合产物 (优选苯甲醛),将任何可保护的伯和仲羟基转化成三苯甲醚或环状缩酮或缩醛,在叔胺中用烃磺酰卤处理所述N-保护的O-保护的氨基糖苷, 受保护的O保护的2'-O-烃磺酰氨基糖苷(新型中间体)与pH为约1至约5的酸性水溶液,并转化所得的2“ 通过在低级烷醇中单独或与所述链烷醇的碱金属盐一起自发转化或加热,将二烃基磺酰氨基糖苷转化为2“ - 脱氧-3” - 脱氨基-2“,3” - 异氨基 - 氨基糖苷。 2'-脱氧-3'-脱氨基-2“,3” - 异亚氨基氨基糖苷在氢化之后,任何缩酮或缩醛功能的酸水解转化为包含抗菌活性2'-脱氧氨基糖苷可分离的产物混合物 通过色谱技术。