会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 61. 发明授权
    • Phenylserine amides and the preparation of phenylserines/phenylserine
amides
    • 苯基丝氨酸酰胺和苯基丝氨酸/苯基丝氨酸酰胺的制备
    • US5773284A
    • 1998-06-30
    • US662797
    • 1996-06-12
    • Bernardus Kaptein
    • Bernardus Kaptein
    • A61K31/165C07C315/04C07C317/46C07C317/48C07C319/20C07C323/41C07C323/45C07C323/63C12P13/04C12P41/00C12P13/06C07B55/00C12N9/78C12P7/40
    • C12P41/006C07C315/04C07C317/48C07C319/20C07C323/41C07C323/63C12P13/04
    • Process for the preparation of a threo-phenylserine amide of the general formula 2 in which glycine amide is contacted with the corresponding substituted benzaldehyde of formula 3 in an excess relative to the amount of glycine amide, this taking place at a pH between 9 and 14 in the presence of a suitable solvent. The resulting phenylserine amide can subsequently be hydrolyzed to a phenylserine amide of the general formula 1, which is subsequently hydrolyzed to a phenylserine amide of the general formula 1, which is subsequently subjected to a stereoselective enzymatic hydrolysis yielding a (2S,3R) phenylserine. The non-hydrolyzed (2R,3S) phenylserine amide can be isolated as a Schiff base and be recirculated and simply racemized. The (2S,3R) phenylserine obtained can be used in the preparation of thiamphenicol or florfenicol. The threo-phenylserine amides of the general formula 1 or 2 are new intermediates in this commercially attractive process for the preparation of thiamphenicol and florfenicol.
    • 制备通式2的苏氨基丝氨酸酰胺的方法,其中甘氨酰胺与相应的取代的式3的取代的苯甲醛相对于甘氨酸酰胺的量相对过量,其发生在9-14之间的pH 在合适的溶剂存在下。 随后将所得苯基丝氨酰胺水解成通式1的苯基丝氨酰胺,随后将其水解成通式1的苯基丝氨酰胺,随后将其进行立体选择性酶水解,得到(2S,3R)苯基丝氨酸。 非水解的(2R,3S)苯基丝氨酸酰胺可以作为希夫碱分离并进行再循环并简单地外消旋化。 获得的(2S,3R)苯基丝氨酸可用于制备甲砜霉素或氟苯尼考。 通式1或2的苏氨基丝氨酸酰胺是制备硫代吗啉和氟苯尼考的​​商业上有吸引力的方法的新中间体。
    • 68. 发明授权
    • Biphenylyl derivatives
    • 联苯衍生物
    • US3993683A
    • 1976-11-23
    • US577169
    • 1975-05-14
    • Josef NicklErich MullerBerthold NarrWalter HaarmannWolfgang SchroterRudolf Kadatz
    • Josef NicklErich MullerBerthold NarrWalter HaarmannWolfgang SchroterRudolf Kadatz
    • C07C67/00C07C69/76C07C313/00C07C315/04C07C317/10C07C317/18C07C317/24C07C317/44C07C323/16C07C323/45C07C323/52C07C323/60C07C323/65C07D213/30C07D295/185C07C149/40
    • C07D213/30C07C317/10C07C317/18C07C317/24C07C317/44C07C323/16C07C323/45C07C323/52C07C323/60C07C323/65C07D295/185Y10S514/822
    • Compounds of the formula ##SPC1##WhereinR.sub.1 is hydrogen, fluorine, bromine, methyl, methoxy, methylthio, nitro, cyano or, when A is other than methylene, R.sub.2 is hydrogen, R.sub.3 is carboxyl, m is 2 and n is 0, also chlorine;R.sub.2 is hydrogen or fluorine;R.sub.3 is hydrogen, methyl, hydroxymethyl, carboxyl, (alkoxy of 1 to 6 carbon atoms)-carbonyl, methoxy-(alkoxy of 1 to 6 carbon atoms)-carbonyl, (alkenyloxy of 2 to 6 carbon atoms)-carbonyl, (aralkoxy of 7 to 12 carbon atoms)-carbonyl, phenoxy-carbonyl, pyridylmethoxy-carbonyl, amino-carbonyl, (alkyl of 1 to 3 carbon atoms-amino)-carbonyl, (dialkyl of 1 to 3 carbon atoms-amino)-carbonyl, phenylamino-carbonyl, morpholino-carbonyl, piperidino-carbonyl, thiomorpholino-carbonyl, (1-oxidothiomorpholino)-carbonyl or (1,1-dioxido-thiomorpholino)-carbonyl;A is methylene, (alkyl of 1 to 3 carbon atoms)-methylene, di-(alkyl of 1 to 3 carbon atoms)-methylene, hydroxymethyl-methylene, hydroxymethylene or carbonyl;m is 1 or 2; andn is 0, 1, 2 or 3;And, when R.sub.3 is carboxyl, non-toxic salts thereof formed with an inorganic or organic base. The compounds as well as the salts are useful as antithrombotics, anticholesteremics and anticoagulants.
    • 式A的化合物是氢,氟,溴,甲基,甲氧基,甲硫基,硝基,氰基,或当A不是亚甲基时,R 2是氢,R 3是羧基,m是2,n是0,也是氯; R2是氢或氟; R 3是氢,甲基,羟甲基,羧基,(1至6个碳原子的烷氧基) - 羰基,甲氧基 - (1至6个碳原子的烷氧基) - 羰基,(2至6个碳原子的链烯氧基) - 羰基 7至12个碳原子的羰基,苯氧基 - 羰基,吡啶基甲氧羰基,氨基 - 羰基,(1至3个碳原子的烷基 - 氨基) - 羰基,(1至3个碳原子的二烷基 - 氨基) - 羰基, 苯基氨基羰基,吗啉代羰基,哌啶子基 - 羰基,硫代吗啉代羰基,(1-氧硫基吗啉代)羰基或(1,1-二氧化硫代吗啉代)羰基。 A是亚甲基,(1至3个碳原子的烷基) - 亚甲基,二(1至3个碳原子的烷基) - 亚甲基,羟甲基 - 亚甲基,羟基亚甲基或羰基; M IS 1 OR 2; 和N是0,1,2或3; 当R 3为羧基时,其无机盐与无机或有机碱形成。 化合物以及盐可用作抗血栓形成剂,抗胆固醇剂和抗凝剂。