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    • 3. 发明授权
    • Process for the preparation of 10-deazaaminopterin and related compounds
    • 制备10-脱甲氨蝶呤及相关化合物的方法
    • US4172200A
    • 1979-10-23
    • US915584
    • 1978-06-15
    • James R. PiperJohn A. Montgomery
    • James R. PiperJohn A. Montgomery
    • C07D475/08
    • C07D475/08
    • There is disclosed an improved process for the preparation of 10-deazaaminopterin and related compounds. In accordance with this process, 6-(bromomethyl)-2,4-pteridinediamine hydrobromide is reacted with triphenylphosphine to form a phosphonium salt which is then treated with a base to yield the corresponding ylid (2,4-diamino-6-pteridinyl)methylenetriphenylphosphorane. This compound is reacted with an aromatic aldehyde such as diethyl 4-formylbenzoyl-L-glutamate to form an olefin which is then reduced catalytically to the tetrahydro derivative of the desired product. Oxidation of the tetrahydro derivative is accomplished with hydrogen peroxide.
    • {PG,1公开了一种用于制备10-脱氮氨基蝶呤及相关化合物的改进方法。 根据该方法,使6-(溴甲基)-2,4-喋啶二胺氢溴酸盐与三苯基膦反应形成鏻盐,然后用碱处理,得到相应的内联(2,4-二氨基-6-吖啶基) 亚甲基三苯基正膦。 该化合物与芳醛如4-甲酰基苯甲酰基-L-谷氨酸二乙酯反应,形成烯烃,然后将该烯烃催化还原成所需产物的四氢衍生物。 四氢衍生物的氧化是用过氧化氢完成的。
    • 10. 发明授权
    • Process for the production of (.+-.)3-deazaaristeromycin
    • 生产(+/-)3-脱氮霉素霉素的方法
    • US4387228A
    • 1983-06-07
    • US302845
    • 1981-09-16
    • John A. MontgomerySarah D. Clayton
    • John A. MontgomerySarah D. Clayton
    • C07D471/04
    • C07D471/04
    • A process for the production of (.+-.)3-deazaaristeromycin, which is also known as (.+-.)-4-amino-1-[(1.alpha., 2.beta., 3.beta., 4.alpha.)-2,3-dihydroxy-4-(hydroxymethyl)-cyclopentyl]imidazo[4,5-c]pyridine, which comprises:(1) reacting 2,4-dichloro-3-nitropyridine with (.+-.)(1,4/2,3)-4-amino-2,3-dihydroxy-1-cyclopentanemethanol to give (.+-.)-(1,4/2,3)-4-(3-nitro-2-chloro-4-pyridylamino)-2,3-dihydroxy-1-cyclopentanemethanol (compound II);(2) subsequently reducing compound II to (.+-.)-(1,4/2,3)-4(3-amino-2-chloro-4-pyridylamino)-2,3-dihydroxy-1-cyclopentanemethanol (compound III);(3) acid catalyzed cyclization of compound III to (.+-.)-4-chloro-1-(1.alpha., 2.beta., 3.beta., 4.alpha.)-2,3-dihydroxy-4-(hydroxymethyl)cyclopentyl)imidazo[4,5-c]pyridine (compound IV);(4) displacing the chloro group of compound IV to produce (.+-.)-4-hydrazino-1-(1.alpha., 2.beta., 3.beta., 4.alpha.)-2,3-dihydroxy-4-(hydroxymethyl)cyclopentyl)-imidazo[4,5-c]pyridine (compound V);(5) cleaving said hydrazino compound V to produce (.+-.)-4-amino-1-[(1.alpha., 2.beta., 3.beta., 4.alpha.)-2,3-dihydroxy-4-(hydroxymethyl)cyclopentyl]imidazo[4,5-c]-pyridine (compound VI).
    • (+/-)3-脱氮霉素霉素的制备方法,其也称为(+/-) - 4-氨基-1 - [(1α,2β,3β,4α)-2,3 - 二羟基-4-(羟甲基) - 环戊基]咪唑并[4,5-c]吡啶,其包括:(1)使2,4-二氯-3-硝基吡啶与(+/-)(1,4 / 3)-4-氨基-2,3-二羟基-1-环戊烷甲醇,得到(+/-) - (1,4 / 2,3)-4-(3-硝基-2-氯-4-吡啶基氨基) - 2,3-二羟基-1-环戊烷甲醇(化合物II); (2)随后将化合物II还原成(+/-) - (1,4 / 2,3)-4(3-氨基-2-氯-4-吡啶基氨基)-2,3-二羟基-1-环戊醇甲醇 化合物III); (3)化合物III酸化催化环化为(+/-) - 4-氯-1-(1α,2β,3β,4α)-2,3-二羟基-4-(羟甲基)环戊基)咪唑 [4,5-c]吡啶(化合物IV); (4)置换化合物IV的氯基以产生(+/-) - 4-肼基-1-(1α,2β,3β,4α)-2,3-二羟基-4-(羟甲基)环戊基 ) - 咪唑并[4,5-c]吡啶(化合物V); (5)切割所述肼基化合物V以产生(+/-) - 4-氨基-1 - [(1α,2β,3β,4α)-2,3-二羟基-4-(羟甲基)环戊基] 咪唑并[4,5-c] - 吡啶(化合物VI)。