Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Peptide containing doai
Reexamination Certificate
1999-06-16
2002-06-04
Borin, Michael (Department: 1631)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Peptide containing doai
C514S009100, C530S317000, C530S323000
Reexamination Certificate
active
06399567
ABSTRACT:
TECHNICAL FIELD
The present invention relates to new polypeptide compound and a pharmaceutically acceptable salt thereof which are useful as a medicament.
BACKGROUND ART
In U.S. Pat. No. 5,376,634, U.S. Pat. No. 5,502,033, etc., there are disclosed the polypeptide compound and a pharmaceutically acceptable salt thereof, which have antimicrobial activities (especially antifungal activity).
DISCLOSURE OF INVENTION
The present invention relates to new polypeptide compound and a pharmaceutically acceptable salt thereof.
More particularly, it relates to new polypeptide compound and a pharmaceutically acceptable salt thereof, which have antimicrobial activities [especially, antifungal activities, in which the fungi may include Asperaillus, Cryptococcus, Candida, Mucor, Actinomyces, Histoplasma, Dermatophyte, Malassezia, Fusarium and the like.], inhibitory activity on &bgr;-1,3-glucan synthase, and further which are expected to be useful for the prophylactic and/or therapeutic treatment of
Pneumocystis carinii
infection (e.g.
Pneumocystis carinii
pneumonia) in a human being or an animal, and further the toxicity of which are expected to be much lower in comparison with the former polypeptide compounds, to a process for preparation thereof, to a pharmaceutical composition comprising the same, and to a method for the prophylactic and/or therapeutic treatment of infectious diseases including
Pneumocystis carinii
infection (e.g.
Pneumocystis carinii
pneumonia) in a human being or an animal.
The object polypeptide compound of the present invention is new and can be represented by the following general formula [I]: (SEQ ID NO: 1)
wherein R
1
is hydrogen or acyl group, or a salt thereof.
The polypeptide compound [I] of the present invention can be prepared by the processes as illustrated in the following schemes.
wherein R
a
1
is acyl group.
Suitable salt of the object compound [I] is a pharmaceutically acceptable salt such as conventional non-toxic mono or di salts and include a metal salt such as an alkali metal salt [e.g. sodium salt, potassium salt, etc.] and an alkaline earth metal salt [e.g. calcium salt, magnesium salt, etc.], an ammonium salt, an organic base salt [e.g. trimethylamine salt, triethylamine salt, pyridine salt, picoline salt, dicyclohexylamine salt, N,N-dibenzylethylenediamine salt, etc.], an organic acid addition salt [e.g. formate, acetate, trifluoroacetate, maleate, tartrate, methanesulfonate, benzenesulfonate, toluenesulfonate, etc.], an inorganic acid addition salt [e.g. hydrochloride, hydrobromide, hydroiodide, sulfate, phosphate, etc.], a salt with an amino acid [e.g. arginine salt, aspartic acid salt, glutamic acid salt, etc.], and the like.
In the above and subsequent description of this specification, suitable examples of the various definitions are explained in detail as follows:
The term “lower” is intended to mean 1 to 6 carbon atom(s), unless otherwise indicated.
The term “higher” is intended to mean 7 to 20 carbon atoms, unless otherwise indicated.
Suitable “acyl group” may be aliphatic acyl, aromatic acyl, heterocyclic acyl, arylaliphatic acyl and heterocyclicaliphatic acyl derived from carboxylic acid, carbonic acid, carbamic acid, sulfonic acid, and the like.
Suitable example of the “acyl group” thus explained may be:
lower alkanoyl [e.g. formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl, hexanoyl, pivaloyl, etc.] which may have one or more (preferably 1 to 3) suitable substituent(s) such as halogen (e.g. fluoro, chloro, bromo, iodo); aryl (e.g. phenyl, naphthyl, anthryl, etc.) which may have one or more (preferably 1 to 3) suitable substituent(s) like hydroxy, higher alkoxy as explained below, aforesaid aryl, or the like; lower alkoxy as explained below; amino; protected amino, preferably, acylamino such as lower alkoxycarbonylamino (e.g. methoxycarbonylamino, ethoxycarbonylamino, propoxycarbonylamino, butoxycarbonylamino, t-butoxycarbonylamino, pentyloxycarbonylamino, hexyloxycarbonylamino, etc.); or the like; di(lower)alkylamino (e.g. dimethylamino, N-methylethylamino, diethylamino, N-propylbutylamino, dipentylamino, dihexylamino, etc.); lower alkoxyimino (e.g. methoxyimino, ethoxyimino, propoxyimino, butoxyimino, t-butoxyimino, pentyloxyimino, hexyloxyimino, etc.);
ar(lower)alkoxyimino such as phenyl(lower)alkoxyimino (e.g. benzyloxyimino, phenethyloxyimino, benzhydryloxyimino, etc.) which may have one or more (preferably 1 to 3) suitable substituent(s) like higher alkoxy as explained below, or the like; heterocyclicthio, preferably, pyridylthio, which may have one or more (preferably 1 to 3) suitable substituent(s) like higher alkyl (e.g. heptyl, octyl, 2-ethylhexyl, nonyl, decyl, 3,7-dimethyloctyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, 3-methyl-10-ethyldodecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, icosyl, etc.), or the like; heterocyclic group (e.g. thienyl, imidazolyl, pyrazolyl, furyl, tetrazolyl, thiazolyl, thiadiazolyl, etc.) which may have one or more (preferably 1 to 3) suitable substituent(s) like amino, aforesaid protected amino, aforesaid higher alkyl, or the like; or the like;
higher alkanoyl [e.g. heptanoyl, octanoyl, nonanoyl, decanoyl, undecanoyl, lauroyl, tridecanoyl, myristory, pentadecanoyl, palmitoyl, 10,12-dimethyltetradecanoyl, heptadecanoyl, stearoyl, nonadecanoyl, icosanoyl, etc.], in which the preferred one may be (C
7
-C
17
)alkanoyl, and the most preferred one may be palmitoyl;
lower alkenoyl [e.g. acryloyl, methacryloyl, crotonoyl, 3-pentenoyl, 5-hexenoyl, etc.] which may have one or more (preferably 1 to 3) suitable substituent(s) such as aforesaid aryl which may have one or more (preferably 1 to 3) suitable substituent(s) like higher alkoxy as explained below, or the like, or the like;
higher alkenoyl [e.g. 4-heptenoyl, 3-octenoyl, 3,6-decadienoyl, 3,7,11-trimethyl-2,6,10-dodecatrienoyl, 4,10-heptadecadienoyl, etc.];
lower alkoxycarbonyl [e.g. methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, t-butoxycarbonyl, pentyloxycarbonyl, hexyloxycarbonyl, etc.];
higher alkoxycarbonyl [e.g. heptyloxycarbonyl, octyloxycarbonyl, 2-ethylhexyloxycarbonyl, nonyloxycarbonyl, decyloxycarbonyl, 3,7-dimethyloctyloxycarbonyl, undecyloxycarbonyl, dodecyloxycarbonyl, tridecyloxycarbonyl, tetradecyloxycarbonyl, pentadecyloxycarbonyl, 3-methyl-10-ethyldodecyloxycarbonyl, hexadecyloxycarbonyl, heptadecyloxycarbonyl, octadecyloxycarbonyl, nonadecyloxycarbonyl, icosyloxycarbonyl, etc.];
aryloxycarbonyl [e.g. phenoxycarbonyl, naphthyloxycarbonyl, etc.];
arylglyoxyloyl [e.g. phenylglyoxyloyl, naphthylglyoxyloyl, etc.];
ar(lower)alkoxycarbonyl which may have one or more suitable substituent(s) such as phenyl(lower)alkoxycarbonyl which may have nitro or lower alkoxy [e.g. benzyloxycarbonyl, phenethyloxycarbonyl, p-nitrobenzyloxycarbonyl, p-methylbenzyloxycarbonyl, etc.];
lower alkylsulfonyl [e.g. methylsulfonyl, ethylsulfonyl, propylsulfonyl, isopropylsulfonyl, pentylsulfonyl, butylsulfonyl, etc.];
arylsulfonyl [e.g. phenylsulfonyl, naphthylsulfonyl, etc.] which may have one or more (preferably 1 to 3) suitable substituent(s) such as lower alkyl as explained below, higher alkoxy as explained below, or the like;
ar(lower)alkylsulfonyl such as phenyl(lower)alkylsulfonyl [e.g. benzylsulfonyl, phenethylsulfonyl, benzhydrylsulfonyl, etc.], or the like;
aroyl [e.g. benzoyl, naphthoyl, anthrylcarbonyl, etc.] which may have one or more (preferably 1 to 5) suitable substituent(s) such as aforesaid halogen; lower alkyl (e.g. methyl, ethyl, propyl, butyl, t-butyl, pentyl, hexyl, etc.); aforesaid higher alkyl; lower alkoxy (e.g. methoxy, ethoxy, propoxy, butoxy, t-butoxy, pentyloxy, hexyloxy, etc.) which may have one or more (preferably 1 to 10) suitable substituent(s) like aforesaid lower alkoxy, aforesaid halogen, aforesaid aryl, or the like; higher alkoxy (e.g. heptyloxy, octy
Hashimoto Michizane
Hashimoto Seiji
Hatanaka Hiroshi
Kanasaki Ryuichi
Kawabata Kohji
Borin Michael
Fujisawa Pharmaceutical Co. Ltd.
LandOfFree
Cyclic hexapeptides having antibiotic activity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cyclic hexapeptides having antibiotic activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclic hexapeptides having antibiotic activity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2956994