摘要:
The invention deals with novel peptides useful for the therapeutic treatment of infectious diseases caused by pathogenic microorganisms, having the structure ##STR1## wherein R.sup.1 is substituted or unsubstituted lower alkanoyl, or substituted or unsubstituted aralkanoyl,R.sup.2 and R.sup.3 are each carboxy or protected carboxy,R.sup.4 is hydrogen or an amino protective group, andR.sup.5 is hydrogen or lower alkyl, and their pharmaceutically acceptable salts.
摘要:
Hydroxyaminohydrocarbonphosphonic acid derivatives represented by the formula: ##STR1## wherein R.sup.1 is hydrogen or acyl,R.sup.2 is hydrogen, lower alkyl, ar(lower) alkyl or acyl, andA is lower alkylene, lower alkenylene or hydroxy(lower) alkylene, or the esters at the phosphono group thereof or the pharmaceutically acceptable salts thereof, excepting 3-(N-acetyl-N-hydroxyamino) propylphosphonic acid, 3-(N-acetyl-N-hydroxyamino)-2-hydroxypropylphosphonic acid, and their pharmaceutically acceptable salts, and processes for preparing the same.Included are compounds having antimicrobial activity against various pathogenic organisms.
摘要:
Diseases caused by platelet activating factor are prevented and treated by administration to a subject of a therapeutically effective amount of a piperazine compound of the formula: ##STR1## wherein R.sup.1 to R.sup.4 are as defined in the specification.
摘要:
The invention relates to novel peptides of pharmacological activity, of the formula ##STR1## wherein R.sup.1 is hydrogen or acyl;R.sup.2 is carboxy or protected carboxy or a group of the formula: --COHN--R.sub.a.sup.2 wherein R.sub.a.sup.2 is carboxy (lower) alkyl or protected carboxy (lower) alkyl;R.sup.3 is carboxy, protected carboxy, lower alkyl, hydroxyphenyl, carbamoyl or a group of the formula: ##STR2## wherein R.sub.a.sup.3 is hydrogen, amino, protected amino or acylamino, R.sub.b.sup.3 is carboxy or protected carboxy;R.sup.p is carboxy, protected carboxy, carbamoyl, carboxy (lower) alkyl or protected carboxy (lower) alkyl;l is an integer 0;m is an interger 3; andn is an integer 1, provided that when R.sup.1 is hydrogen or acyl,R.sup.2 is carboxy, protected carboxy or a group of the formula:--CONHR.sub.a.sup.2 wherein R.sub.a.sup.2 is carboxy (lower) alkyl or protected carboxy (lower) alkyl,R.sup.p is carboxy, or protected carboxy,R.sup.3 is carbamoyl, lower alkyl or hydroxyphenyl or a group of the formula: ##STR3## wherein R.sub.a.sup.3 is hydrogen or acylamino and R.sub.b.sup.3 is carboxy or protected carboxy, andwhen R.sup.p is carbamoyl, thenR.sup.1 is acyl.
摘要:
The invention relates to a biologically pure culture of new strains of the microorganism Streptomyces which are capable upon fermentation of producing a peptide of pharmacological activity.
摘要:
New antimicrobial azetidinone derivatives and their salt of the formula: ##STR1## wherein R.sub.1 amino or acylamino, and A is selected from a variety of groups.
摘要:
The invention relates to novel peptides and their pharmaceutically acceptable salts, particularly useful for pharmaceutical purposes such as in the therapeutic treatment of infectious diseases caused by pathogenic microorganisms. The compounds have the structure ##STR1## wherein R.sup.1 is hydrogen or acyl;R.sup.2 is carboxy or protected carboxy or a group of the formula: --COHN--R.sub.a.sup.2 wherein R.sub.a.sup.2 is carboxy (lower) alkyl or protected carboxy (lower) alkyl;R.sup.3 is carboxy, protected carboxy, lower alkyl, hydroxyphenyl, carbamoyl or a group of the formula: ##STR2## wherein R.sub.a.sup.3 is hydrogen, amino, protected amino or acylamino, R.sub.b.sup.3 is carboxy or protected carboxy;R.sup.p is carboxy, protected carboxy, carbamoyl, carboxy (lower) alkyl or protected carboxy (lower) alkyl;l is an integer 2,m is an integer 0 to 2 andn is an integer 1,provided that,whenR.sup.1 is hydrogen or acyl,R.sup.2 is carboxy, protected carboxy or a group of the formula: --CONHR.sub.a.sup.2 wherein R.sub.a.sup.2 is carboxy (lower) alkyl or protected carboxy (lower) alkyl,R.sup.p is carboxy, or protected carboxy, m is an integer 2, thenR.sup.3 is carbamoyl, lower alkyl or hydroxyphenyl or a group of the formula: ##STR3## wherein R.sub.a.sup.3 is hydrogen or acylamino and R.sub.b.sup.3 is carboxy or protected caboxy, andwhenR.sup.p is carbamoyl, thenR.sup.1 is acyl.
摘要:
New antimicrobial azetidinone derivatives and their salt of the formula: ##STR1## wherein R.sub.1 is amino or acylamino, and A is selected from a variety of groups.
摘要:
Heterobicyclic derivatives of the formula: wherein R1 is aryl which may have suitable substituent(s), ar(lower)alkyl which may have suitable substituent(s), halo(lower)alkyl, protected carboxy(lower)alkyl, acyl(lower)alkyl, heterocyclic group or heterocyclic(lower)alkyl which may have suitable substituent(s), R2 is aryl which may have suitable substituent(s) or heterocyclic group, and R3 is hydrogen, lower alkoxy or arylthio, and a pharmaceutically acceptable salt thereof which are useful as a medicament.
摘要:
Anthraquinone compounds of the formula: ##STR1## wherein: R.sup.1 is hydrogen, hydroxy or acyloxy,R.sup.2 is hydrogen or acyl,R.sup.3 is acyl,R.sup.4 is hydrogen or acyl,R.sup.5 is hydrogen or acyl,R.sup.6 is hydrogen or acyl, andR.sup.7 is hydrogen or acylhave been found to possess endothelin antagonistic properties and are producible by various synthetic and fermentation processes.