申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US03953428A1
公开(公告)日:1976-04-27
The ampicillin derivatives represented by the general formula ##SPC1## Wherein R represents ##SPC2## Wherein R' represents a hydrogen atom, a methyl group, or an ethyl group and A and B each represents a hydrogen atom, a hydroxyl group, a methyl group, a methoxy group, a nitro group, or a halogen atom and further said B may combine with A on the carbon atom at the position to form ##SPC3## Group (where in Z represents --CH=N-- or --CH=CH-- and an R.sup.2 represents a hydrogen atom, a hydroxyl group, a phenyl group, a methyl group, an ethyl group, a methoxy group, an ethoxyl group, a methylthio group, a trifluoromethyl group, a halogen atom, a nitro group, an acetyl group, an acetamido group, a ethoxycarbonyloxy group, or a methylsulfonyl group and further R.sub.2 and ##SPC4## May form a thiazole, isothiazolo, pyrrolo, furo, or benzo fused ring which may be substituted by an oxo group, a methyl group, or an acetyl group) and the dotted line means an arbitrary double bond, ##SPC5## Wherein R.sup.3 and R.sup.4 each represents a hydrogen atom or a methyl group, ##SPC6## Wherein R.sup.5 represents a halogen atom, a methoxy group, a nitro group, or a hydroxyl group and R.sup.6 represents a hydrogen atom, a methoxy group, a halogen atom, a nitro group, or a hydroxyl group, or ##SPC7## Wherein R.sup.7 represents a hydrogen atom or a hydroxyl group, Y represents O or S, and the dotted line means an arbitrary double bond, said substituent group, being bonded to the ampicillin molecule through --CO-- at the 2-position, 3-position, 5-position or 6-position when the oxo group (+0) is at the 4-portion and being bonded to the ampicillin molecule through the --CO-- group at the 2-position, 4-position, or 5-position when the oxy group is at the 6-position, and salts of the ampicillin derivatives. Those compounds are valuable as antibacterial agents.
该专利描述了氨苄青霉素衍生物的一般公式,其中R代表一种化合物,R'代表氢原子,甲基基团或乙基基团,A和B分别代表氢原子,羟基,甲基,甲氧基,硝基或卤素原子,进一步地,B可以与A在碳原子上结合形成一个羰基,其中Z代表--CH=N--或--CH=CH--,R2代表氢原子,羟基,苯基,甲基,乙基,甲氧基,乙氧基,甲硫基,三氟甲基,卤素原子,硝基,乙酰基,乙酰胺基,乙氧羰氧基,或甲基磺酰基,进一步地R2和R3可以形成噻唑,异噻唑,吡咯,呋喃或苯并融合环,该环可以被氧基,甲基或乙酰基取代。虚线表示任意双键。该专利还描述了这些化合物的盐。这些化合物作为抗菌剂具有重要价值。