Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Patent
1987-07-20
1990-10-30
Rizzo, Nicholas S.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
540222, 540225, 540227, 540226, 514207, C07D50136, A61K 31545
Patent
active
049669001
ABSTRACT:
There are disclosed a .beta.-lactam compound represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are independently a hydrogen atom or a lower alkyl group; M is a hydrogen atom, a protective group or an eliminatable group which is easily hydrolyzable in a human body; R' and R" are independently a hydrogen atom or a protective group; A is a mercapto group substituted by a substituted or unsubstituted polycyclic nitrogen-containing heterocyclic ring or a group represented by the following formula (a):
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Shimizu Shigeo
Takano Hiroyuki
Nippon Pharmaceutical Development Institute Co., Ltd.
Rizzo Nicholas S.
Sankei Pharmaceutical Company Ltd.
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