"Triazolo-pyrimidine intermediates"

Organic compounds -- part of the class 532-570 series – Organic compounds – Pteroyl per se or having -c- – wherein x is chalcogen – bonded...

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Details

544262, 544280, 544281, 540227, C07D48704, A61K 31505

Patent

active

049564625

ABSTRACT:
There are disclosed a .beta.-lactam compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an acyl group; M represents a hydrogen atom, a protective group of an eliminatable group which is easily hydrolyzable in a human body; B represents a group represented by the formula (b): ##STR2## where at least one of R.sub.2, R.sub.3 and R.sub.9 represent a group represented by the formula: -A-OR.sub.4 where R.sub.4 represents a hydrogen or a lower alkyl group; and A represents a straight or branched alkylene group having 1 to 6 carbon atoms; and a remaining group or groups are each independently a hydrogen atom; a cyano group; a lower alkyl group which may be substituted by a halogen atom; a carbamoyl group which may be substituted by a lower alkyl group; a cycloalkyl group; or a carboxyl group which may be substituted by a protective group of an eliminatable group which is easily hydrolyzable in a human body, and also when R.sub.9 is -A-OR.sub.4, R.sub.2 and R.sub.3 may be combined with each other to form an alkylene group having 3 to 4 carbon atoms; and Z represents a nitrogen atom or a group represented by the formula: C-R.sub.10 where R.sub.10 represents a hydrogen atom, a carboxyl group or a lower alkyl group which may be substituted by a hydroxy group or a lower alkoxy group,
or its pharmaceutically acceptable salt, and a process for preparing the same, an intermediate for synthesis of the same and a medicinal composition for bacterially infectious disease therapy containing the same.

REFERENCES:
patent: 3799926 (1974-03-01), Duffin et al.
patent: 4528288 (1985-07-01), Wade
patent: 4657172 (1987-06-01), Quan et al.

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