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    • 92. 发明授权
    • 신규 세팔로스포린계 항생제 및 이의 제조방법
    • 制备西酞普兰的方法
    • KR1019910008376B1
    • 1991-10-12
    • KR1019890010755
    • 1989-07-28
    • 주식회사 엘지
    • 김용주오헌승여재홍임종찬김원섭방찬식임현주
    • C07D501/36
    • Cephalosporin derivs. of formula (I), their pharmaceutically acceptable non-toxic salts and their physiologically hydrolyzable esters and solvates are new. (I) are prepd. by reacting a cpd. of formula (II) with a cpd. of formula (III) in the presence of a solvent. In the formulas, R1 = C1-4 alkyl, C3-4 alkenyl, C3-4 alkynyl or C(Ra)(Rb)COOH; Ra and Rb each = H or C1-4 alkyl; or CRaRb = C3-7 cycloalkyl; R2, R3, R4, R5 and R6 each = H, Cl, -CH3, - OCH3, -COOH, -NH2 or -OH; n = 0 or 1. (I) exhibit antibacterial activity against Gram-positive and -negative bacteria. (I) have good stability to beta-lactamase.
    • 头孢菌素衍生物。 式(I)化合物,其药学上可接受的无毒盐及其生理上可水解的酯和溶剂合物是新的。 (I)是prepd。 通过反应cpd。 的式(II)与cpd。 的式(III)化合物。 式中R1 = C1-4烷基,C3-4烯基,C3-4炔基或C(Ra)(Rb)COOH; R a和R b各自为H或C 1-4烷基; 或CRaRb = C3-7环烷基; R2,R3,R4,R5和R6各自为H,Cl,-CH3,-OCH3,-COOH,-NH2或-OH; n = 0或1.(I)表现出对革兰氏阳性和阴性细菌的抗菌活性。 (I)对β-内酰胺酶具有良好的稳定性。