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
    • 12. 发明专利
    • PRODUCTION OF PYRIMIDINE DERIVATIVE
    • JPH07118233A
    • 1995-05-09
    • JP26136593
    • 1993-10-19
    • SHIONOGI & CO
    • OKADA TETSUOKONOIKE TOSHIRO
    • C07D239/26C07D213/55C07D215/14C07F7/18
    • PURPOSE:To facilitate the removal of by-products under mild conditions and obtain the pyrimidine derivative having inhibiting activities against 3-hydroxy-3- methylglutaryl coenzyme A (HMG-CoA) reductases by reacting a specific aldehyde compound with a specified ketophosphonate in the presence of a base in an organic solvent. CONSTITUTION:This process for producing a pyrimidine derivative expressed by formula III (R is an alkyl, a cycloalkyl, an aryl or amino; R and R are each H, an alkyl, a cycloalkyl or phenyl; R is H or carboxy-protecting group; R is H or a hydroxy-protecting group] is to react an aldehyde compound expressed by formula I [X is N or R C (R is an alkyl, or, together with the adjacent C may form a condensed benzene ring)] with a ketophosphonate derivative expressed by formula II (R and R are each an alkoxy) in the presence of a base in an organic solvent such as toluene at about ambient temperature. An HMG-CoA reductase inhibitor which is a central enzyme for biosynthesis of cholesterol can safely be produced in a high yield according to the method for production. This process is advantageous due to the use of the ketophosphonate derivative having high reactivity and by-products can readily be removed due to their water solubility.
    • 13. 发明专利
    • METHOD FOR OPTICALLY RESOLVING CYCLIC AMINE AND OPTICALLY ACTIVE ISOMER OBTAINED BY THE METHOD
    • JPH0532621A
    • 1993-02-09
    • JP32129091
    • 1991-11-08
    • SHIONOGI & CO
    • OKADA TETSUOTSUSHIMA TADAHIKO
    • C07B57/00C07D207/22
    • PURPOSE:To readily and inexpensively produce in a high yield, a (-)-(S)-3- methylamino-4-methylenepyrrolidine derivative having a high optical purity and useful as a raw material for substituents to be introduced into various pyridone carboxylic acid series antibiotics. CONSTITUTION:A 3-methylamino-4-methylene pyrrolidine derivative of formula I (R is H, amino-protecting group) and L-(+)-tartaric acid in a molar ratio of 2:1 are subjected to a salt-forming reaction to form a tartaric acid salt of formula II. The salt of formula II is treated with a base and subsequently subjected to a protecting group-removing reaction to effectively and simply produce a (-)-(S)-3-methylamino-4-methylenepyrrolidine derivative. The L-(+)- tartaric acid is very inexpensive and can resolve the compound of formula I in a half amount in comparison with conventional methods. The L-(+)-tartaric acid does not require any complicated operation on the resolution and crystallization of the compound of formula I, and gives (-)-(S)-3-methylamino-4-methylene pyrrolidine derivative of formula III substantially quantitatively in a high yield of >=90% and in the optically pure form by a single crystallization and resolution process.
    • 18. 发明专利
    • Cephalosporin relating compound for oral administration
    • CEPHOROSPORIN相关化合物用于口服管理
    • JPS5738783A
    • 1982-03-03
    • JP10177980
    • 1980-07-23
    • Shionogi & Co Ltd
    • NARISADA MASAYUKIOKADA TETSUOYOSHIDA TADASHIMATSUURA SHINZOU
    • A61K31/535A61P31/04C07D505/00
    • C07D505/00
    • NEW MATERIAL:A cyanoalkaneamidooxacephalosporin derivative shown by the furmula I (A is lower alkyl, lower alkenyl, lower alkynyl; B
      1 is H, salt-forming atom, salt-forming group, physiologically hydrolyzable ester group).
      EXAMPLE: 7β-(2-Cyano-n-butyryl)amino-7α-methoxy-3-(1-methyl-5-tetrazolyl) thiomethyl-1-dethia-1-oxa-3-cephem-4-carboxylic acid acetoxymethyl ester(formula II.
      USE: An antimicrobial agent for oral administration or for injection. Effective for preventing and remedying infectious disease of urinary tract, infectious disease of inspiration, osteomyelitis, etc.
      PROCESS: A corresponding compound is subjected to an operation, e.g., introduction of B
      1 group, introduction of an acyl group in the side chain, introduction of cyano group, etc., to give a compound shown by the formula I.
      COPYRIGHT: (C)1982,JPO&Japio
    • 新材料:由糠醛I(A为低级烷基,低级烯基,低级炔基,B 1为H,成盐原子,成盐基团,生理学上可水解的酯基)所示的氰基烷酰胺氧基乙酰孢子衍生物。 实施例:7beta-(2-氰基正丁酰)氨基-7α-甲氧基-3-(1-甲基-5-叔唑基)硫甲基-1-脱硫-1-氧杂-3-头孢烯-4-羧酸乙酰氧基甲基 酯(式II。用途:口服或注射用抗微生物剂,有效预防和治疗尿道​​感染性疾病,感染性感染性疾病,骨髓炎等。方法:对相应的化合物进行手术, 引入B 1基团,在侧链中引入酰基,引入氰基等,得到式I所示的化合物。