.beta.-Lactam antibiotics, their preparation and use
申请人:Beecham Group Limited
公开号:US04413000A1
公开(公告)日:1983-11-01
The present invention provides the compounds of the formula (II): ##STR1## and salts and esters thereof wherein R.sup.3 is a hydrogen atom or is an organic bonded via a carbon atom to the carbapenem ring, n is zero or one, X is a saturated or unsaturated hydrocarbon radical optionally substituted by bromo or chloro, and R.sup.4 is a C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.1-10 aralkyl or aryl group, any of such groups R.sup.4 being optionally substituted. These compounds are useful as antibacterial agents.
Beta-lactam antibiotics, a process for their preparation and pharmaceutical compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0003740A2
公开(公告)日:1979-09-05
The present invention provides the antibacterial agents of the formula (II):
Wherein R1 is a group such that CO2R1 is a carboxylic acid group or a salt thereof or is a group of the formula CO2R wherein is a group such that CO2 is an ester group, R2 is a hydrogen atom or a lower alkyl group; R3 is a hydrogen atom or a lower alkyl group; and R4 is a phenyl group or a phenyl group substituted by one or two groups selected from fluorine, chlorine, OR5, NH.CO.R5, NH.CO2R5 or C02Rs where Rs is a lower alkyl or benzyl group or R4 is a hydrogen atom or lower alkyl group or R4 is a CO2R5 group where Rs is a lower alkyl group or benzyl group or R4 is a NH.COnRe group where R6 is a lower alkyl group, a phenyl group or a phenyl group substituted by one or two halogen atoms, lower alkyl or lower alkoxyl groups: and n is 1 or 2. A process for their preparation and their use in pharmaceutical compositions is also described.
Beta-lactam antibiotics, their preparation and use
申请人:BEECHAM GROUP PLC
公开号:EP0044170A1
公开(公告)日:1982-01-20
The present invention provides the compounds of the formula (II):
and salts and esters thereof wherein R3 is a hydrogen atom or is an organic bonded via a carbon atom to the carbapenem ring, n is zero or one, X is a saturated or unsaturated hydrocarbon radical optionally substituted by bromo or chloro, and R4 is a C1-6 alkyl, C2-6 alkenyl, C1-10 aralkyl or aryl group, any of such groups R4 being optionally substituted. These compounds are useful as antibacterial agents.
Process for the preparation of azabicyclo(3.2.0)-hept-2-ene derivatives
申请人:BEECHAM GROUP PLC
公开号:EP0060612A1
公开(公告)日:1982-09-22
A process for the preparation of an antibacterially active compound of the formula (I):
and salts and esters thereof wherein R1 and R2 independently are hydrogen or an organic group, and R3 is an organic group bonded via a carbon atom to the sulphur atom, which comprises reacting a compound of the formula (II):
wherein R4 is an organic group different to H3 and Ra is hydrogen or a carboxy-blocking group, with a thiol R3SH or reactive derivative thereof. In addition certain compounds within the formula (II) are novel and useful antibacterial agents in their own right.