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2. 发明授权

US4255565A Production of 2,6-diaminonebularines 失效
标题翻译：生产2,6-二氨基苯甲酸
公开(公告)号：US4255565A
公开(公告)日：1981-03-10
申请号：US953255
申请日：1978-10-20
申请人： Ryuji Marumoto , Shunsuke Shima , Yoshiyasu Furukawa
发明人： Ryuji Marumoto , Shunsuke Shima , Yoshiyasu Furukawa
IPC分类号： C07H19/16 , C07H17/00
CPC分类号： C07H19/16 , Y02P20/55
摘要： Compounds of the formula ##STR1## wherein R is a phenyl or cyclohexyl group which may be substituted by halogen, lower alkyl or lower alkoxy, or their acid addition salts, are produced in good yield by reacting a compound of the formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3, independently of each other, are a hydroxyl group which may be proctected, which is prepared in 2 or 3 steps from 5-amino-1-.beta.-D-ribofuranosylimidazole-4-carboxamide, with a compound of the formulaR--N.dbd.C.dbd.N--R.sup.4wherein R has the same meaning as defined above and R.sup.4 is hydrogen or the same group as R, and, if necessary, subjecting the resulting compound to a treatment for removal of protective groups on its hydroxyl groups.
摘要翻译：其中R是可被卤素，低级烷基或低级烷氧基取代的苯基或环己基或其酸加成盐的式“IMAGE”的化合物以良好的收率通过使下式化合物 R 1，R 2和R 3彼此独立地是羟基，其可以被直接制备，其从5-氨基-β-D-呋喃核糖基咪唑-4-甲酰胺以2或3个步骤制备，式RN = C = N-R4其中R具有与上述相同的含义，R 4是氢或与R相同的基团，如果需要，将所得化合物进行处理以除去其羟基上的保护基。

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