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    • 82. 发明授权
    • Methods for preparing cephalosporins
    • 头孢菌素的制备方法
    • US4035362A
    • 1977-07-12
    • US672527
    • 1976-03-31
    • Paolo MasiMaurizio FoglioGiovanni FranceschiAntonino SuaratoGianfranco CainelliFederico Arcamone
    • Paolo MasiMaurizio FoglioGiovanni FranceschiAntonino SuaratoGianfranco CainelliFederico Arcamone
    • C07D205/08C07D205/095C07D501/08C07D501/10C07D501/20
    • C07D501/08C07D205/095
    • A process for preparing cephalosporins of the structure: ##STR1## where R is any of hydrogen, C.sub.1 to C.sub.4 alkyl, t-butoxy, benzyloxy, cyano-methyl, thienyl-methyl, furyl-methyl, naphthyl-methyl, phenyl-methyl, phenoxy-methyl, phenoxy-isopropyl, pyridyl-4-thiomethyl and tetrazolyl-1-methyl;R.sub.1 is any of hydroxyl, C.sub.1 to C.sub.4 alkoxy, benzyloxy, p-methoxy- (or nitro-) benzyloxy, benzhydryloxy, triphenylmethoxy, phenacyloxy, p-halophenacyloxy and trichloroethoxy;Z is any of hydrogen, hydroxyl, --O--CO--C.sub.1 -C.sub.4 alkyl, --O--C.sub.1 -C.sub.4 alkyl, --Br, --I, --Cl, --N.sub.3, --NH.sub.2, --O--CO--CH.sub.3, --O--CO--NH.sub.2 and an -S-mononuclear nitrogen heterocyclic ring,By reacting compounds of the structure: ##STR2## IN WHICH R, R.sub.1, and Z are as above defined; R.sub.2 and R.sub.3 are the same or different and represent a C.sub.1 to C.sub.4 alkyl, a mononuclear aryl ring, --CN, a mononuclear heterocyclic ring or the radicals --COR.sub.4, COOR.sub.4, --PO(OR.sub.4).sub.2, --CO--NHR.sub.4 or R.sub.2 and R.sub.3 together may represent: ##STR3## where T represents >CH.sub.2, -N--R.sub.4 ; and R.sub.4 is lower alkyl, a mononuclear aryl ring or a mononuclear heterocyclic ring,Alone or as mixtures with each other in a suitable solvent at a temperature between -100 and +120.degree. C with a strong base to give compounds of formula I that are a mixture of .DELTA..sub.2 and .DELTA..sub.3 cephem-derivatives from which the .DELTA..sub.3 cephem derivatives can be obtained.
    • 一种制备结构式头孢菌素的方法:其中R是氢,C1-C4烷基,叔丁氧基,苄氧基,氰基 - 甲基,噻吩基 - 甲基,呋喃基 - 甲基,萘基 - 甲基,苯基 - 甲基 ,苯氧基甲基,苯氧基 - 异丙基,吡啶基-4-硫代甲基和四唑基-1-甲基; R1是羟基,C1〜C4烷氧基,苄氧基,对甲氧基 - (或硝基)苄氧基,二苯甲氧基,三苯基甲氧基,苯甲酰氧基,对卤代苯氧基和三氯乙氧基中的任一个。 Z是氢,羟基,-O-CO-C 1 -C 4烷基,-O-C 1 -C 4烷基,-Br,-I,-Cl,-N 3,-NH 2,-O-CO-CH 3,-O -CO-NH 2和-S-单核氮杂环,通过反应结构的化合物:其中R,R 1和Z如上所定义;其中R,R 1和Z如上所定义; R2和R3相同或不同,表示C1至C4烷基,单核芳基环,-CN,单核杂环或基团-COR4,COOR4,-PO(OR4)2,-CO-NHR4或R2和 R3一起可以表示:其中T表示> CH 2,-N-R 4; 并且R 4为低级烷基,单核芳基环或单核杂环,单独或混合于适宜溶剂中的温度为-100℃和+120℃之间的强碱,得到式I化合物 可以获得DELTA 2和DELTA 3头孢烯衍生物的混合物,其中可以获得DELTA 3头孢烯衍生物。
    • 84. 发明授权
    • Paromomycin derivatives and process for the preparation thereof
    • 巴罗霉素衍生物及其制备方法
    • US4021601A
    • 1977-05-03
    • US565657
    • 1975-04-07
    • Federico ArcamoneGiuseppe Cassinelli
    • Federico ArcamoneGiuseppe Cassinelli
    • C07H15/232C07H15/22
    • C07H15/232
    • A process is disclosed for preparing paromomycin derivatives N-substituted in the 2'-position and having the general formula: ##STR1## wherein R.sub.2 is an alkyl radical having from 1 to 10 carbon atoms or an arylalkyl radical having not more than 10 carbon atoms, wherein paromomycin is treated with a carboxylic acid anhydride in the presence of a strong acid to give an intermediate of formula II as shown in the accompanying specification, which then is reacted in the presence of sodium borohydride with the aldehyde whose radical is to be attached to the N-atom in the 2' position. Also as new compounds, 2'-N-alkylparomomycins of formula (I), wherein R.sub.2 is an alkyl radical having from 1 to 10 carbon atoms or an arylalkyl radical having not more than 10 carbon atoms, includingTetra-(N-1, N-3, N-2"', N-6"')-acetylparomomycin;2'-N-ethylparomomycin; and2'-N-(3-phenylpropyl)-paromomycin.The new compounds are useful as antibiotics.
    • 公开了制备在2'-位上N-取代的具有以下通式的巴龙霉素衍生物的方法:其中R 2是具有1至10个碳原子的烷基或具有不超过10个碳原子的芳基烷基 其中在强酸存在下,用羧酸酐处理巴龙霉素,得到如所附说明书所示的式Ⅱ中间体,然后在硼氢化钠存在下与其基团所连接的醛反应 到2'位的N原子。 还有作为新化合物,式(I)的2'-N-烷基巴罗霉素,其中R2是具有1-10个碳原子的烷基或具有不多于10个碳原子的芳基烷基,包括TETRA-(N-1, N-3,N-2“',N-6”') - 乙酰丙霉素; 2-N-乙基巴霉素; 和2'-N-(3-苯基丙基) - 霉素霉素。