WO2001064700A1 - Novel macrolide compound jk - Google Patents
Novel macrolide compound jk Download PDFInfo
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- WO2001064700A1 WO2001064700A1 PCT/JP2001/001363 JP0101363W WO0164700A1 WO 2001064700 A1 WO2001064700 A1 WO 2001064700A1 JP 0101363 W JP0101363 W JP 0101363W WO 0164700 A1 WO0164700 A1 WO 0164700A1
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- Prior art keywords
- compound
- culture
- general formula
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H17/00—Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
- C07H17/04—Heterocyclic radicals containing only oxygen as ring hetero atoms
- C07H17/08—Hetero rings containing eight or more ring members, e.g. erythromycins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/44—Preparation of O-glycosides, e.g. glucosides
- C12P19/60—Preparation of O-glycosides, e.g. glucosides having an oxygen of the saccharide radical directly bound to a non-saccharide heterocyclic ring or a condensed ring system containing a non-saccharide heterocyclic ring, e.g. coumermycin, novobiocin
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/03—Actinomadura
Definitions
- the present invention relates to a novel compound JK, and more specifically, the present invention relates to new compounds JK-11 and JK-12, and methods for producing and using the same.
- the new compounds JK-1 and JK-2 are novel macrolide compounds that have been isolated and collected from cultures of microorganisms, especially actinomycetes, and have excellent physiological activity, particularly excellent antibacterial activity, especially anti-MR. It has SA (methicillin-resistant Staphylococcus aureus) activity.
- MM46115 R. j. Ashton et. Al., J. Antibiot., Vol. 43, pp. 1387-1393, 1990, K. Luk et. Al., J. Chem. Soc. Perkin Trans. 1, Vol. 7, pp.
- novel macrolide compounds JK-1 and JK-2 according to the present invention are very useful as antibacterial agents and as prophylactic and / or therapeutic agents, and can be used effectively.
- This compound has excellent antibacterial properties, and in particular, A (methicillin-resistant Staphylococcus aureus) is not only effective, but also characterized by its much higher anti-MRSA activity than currently used vancomycin, and also in terms of safety. It has no problems and has particularly good features in practical use.
- the present invention has been made in response to such demands in the industry, and as a result of repeated screening in accordance with the flow of technological development of antibacterial agents, the antibacterial activity of a novel compound that has not been known until now has been determined.
- the inventors have found that the present invention has been completed.
- the present invention has been known in view of antibacterial properties against various microorganisms including resistant bacteria, safety without toxicity and side effects, and productivity such as easy production and mass production. To provide novel compounds with better antibacterial activity than other substances It was done for the purpose. Means for solving the problem
- the present inventors have conducted a broad search for natural products, particularly for metabolites of microorganisms, with the aim of obtaining a substance having a novel antibacterial action, and as a result of conducting a search for substances having a more effective antibacterial action, A substance having the desired action was found in the cell extract of Actinomadura pelletieri IFM 0903 (FERM BP-730), and the physicochemical properties of this substance were investigated in detail, and the chemical structure was determined. As a result, it was confirmed that the substance was a novel substance that was not known before.
- This substance was a novel macrolide compound represented by the general formula (1) as described in claims 1 to 3.
- the present inventors named the present compound JK, and further named JK-1 when R is a methyl group in the general formula (1) and JK-2 when R is a hydrogen atom in the general formula (1). .
- salts include alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as calcium salt and magnesium salt, inorganic acid salts such as hydrochloride, sulfate, nitrate, and various organic acid salts. All pharmaceutically acceptable salts such as organic salts such as amine salts and pyridinium salts are included.
- the present invention also relates to an antibacterial agent comprising the novel macrolide compound JK_1, 2 or a pharmaceutically acceptable salt thereof as an active ingredient.
- an antibacterial agent comprising the novel macrolide compound JK_1, 2 or a pharmaceutically acceptable salt thereof as an active ingredient.
- the compound JK according to the present invention is a mixture, and at present, two kinds of compounds, JK-1 and JK-12, have been separated. Among these compounds, the physicochemical properties of JK-1 are shown in Table 1 below.
- Compound according to the present invention JK is produced by Actinomadura pelletieri IFM Q903 (FERM BP- 7030 ).
- the microbiological properties of the Actinomadura pelletieri IFM 0903 strain are morphologically long and divergent, as seen in a species of Actinomycetes, when cultivated on a sodium agar medium (ISP-3). It had hyphae and aerial mycelium. By increasing the culture time, several bacillus-like spores and aerial hyphae and vegetative hyphae were observed. Since vegetative hyphae were also observed, it was presumed to belong to the genus Actinomadura morphologically.
- Table 3 below shows the culture characteristics of Actinomadura pelletieri IFM 0903 strain in various media.
- Table 4 below shows the physiological and biochemical properties.
- This strain was shake-cultured in a medium (Brainheart 'Infusion containing 2% glucose) at a stirring speed of 25 O rpm at 30 ° C for 72 hours, and the cells grown in the medium were centrifuged ( (300 rpm ⁇ 10 min) and washed twice with distilled water. The cells were further washed with ethanol, and then dried under vacuum to obtain dried cells.
- the amino acid composition, sugar composition and lipid composition of the cell wall of the dried cells were examined based on Bergey's Manual of Determinative Bacteriology 9th ed., Willams, Browntmore, 1993. Amino acid analysis showed meso-diaminobimelic acid, and sugar analysis showed mudulose.
- MK-9 (H6) was confirmed as a major component of isoprenoid quinone, which is a bacterial lipid component.
- the strain was identified as Actinomadura pelletieri based on the utilization of adenine, casein, hypoxanthine, and tyrosine shown in Table 4 and the pattern of acid production from sugar. This strain is classified as Actinomadura pelletieri as in Since it is extremely distinctive in its production, it was named Actinomadura pelletieri IFM 0903 as a new strain, and deposited internationally with the National Institute of Advanced Industrial Science and Technology, Biotechnology and Industrial Technology Research Institute (FERM BP-730).
- Compound JK according to the present invention is produced by Actinomadura pelletieri IFM 0903 strain (FERM BP-730) strain, and has also been confirmed to be produced by other strains belonging to the genus Act inomadura. JK is produced from these microorganisms by treatment with X-rays, ⁇ -irradiation, nitrogen mustard, N-methyl-N, —nitro-N-N-l-nitrosogazine, mutagen such as 2-aminopurine, and ethyl methanesulfonate.
- the present invention also broadly includes the use of all mutants capable of producing compound JK, including artificial mutants and natural mutants obtainable by the above method.
- novel compound JK represented by the general formula (1) according to the present invention can be produced not only by a chemical synthesis method but also by a microorganism as described above.
- Actinomadura pelletieri IFM 903 strain a medium containing a carbon source and a nitrogen source which can be utilized, but under aerobic submerged culture conditions (for example, shaking). It is preferable to produce the cells by a continuous culture or aeration and stirring culture.
- glucose As the carbon source, glucose, glycerol, sucrose, starch, dextrin and other carbohydrates are preferably used.
- Nitrogen sources include oatmeal, yeast extract, beef extract, tuna extract, peptone, gluten meal, cottonseed oil, soybean meal, cornsprika, and dried It is preferable to use dried yeast, wheat germ, groundnut flour, chicken bone meat meal, etc., but inorganic and organic nitrogen compounds such as ammonium salts (for example, ammonium nitrate, ammonium sulfate, ammonium phosphate, etc.), urea, amino acids and the like. Can also be used advantageously.
- Inorganic salts can be added to the medium.
- an antifoaming agent such as liquid paraffin, animal oil, plant oil, mineral oil, silicone, etc. can be added, especially if the medium foams.
- aeration-agitation culture In order to industrially produce the target substance in large quantities, it is preferable to carry out aeration-agitation culture as in the case of other fermentation products. For small-scale production, shake culture using a flask is preferred.
- the composition of the medium used for the preculture and the composition of the medium used for the production culture may be the same, or both may be changed if necessary.
- the cultivation is preferably performed under aeration and stirring conditions. For example, known methods such as stirring with a propeller or other machine, rotation or shaking of a flamenze, pumping, and air blowing are appropriately used.
- the air for ventilation should be sterilized.
- the culturing temperature can be appropriately changed within a range in which the compound JK-producing bacterium produces the substance, but it is usually 10 to 40 ° C; preferably 25 to 35 ° C.
- the culturing time varies depending on the culturing conditions and the culturing volume, but is usually about 1 day to 1 week.
- the target compound JK is recovered from the culture. That is, the cells are directly extracted with water and / or an organic solvent, or are disrupted mechanically or by using known means such as ultrasonic waves, and then extracted with water and Z or an organic solvent, and the cells are extracted according to a conventional method. Collect and purify.
- a culture solution it may be directly extracted with a solvent, or after filtration or centrifugation of the culture solution, concentration under reduced pressure, lyophilization, pH adjustment, anion or cation exchange resin, activated carbon, powdered cellulose, After the compound JK is adsorbed by contacting with a carrier such as silica gel, alumina, or an adsorptive resin, this may be eluted from the carrier.
- a carrier such as silica gel, alumina, or an adsorptive resin
- conventional methods for collecting antibiotics are appropriately used, for example, solvent extraction with water, an organic solvent, or a mixed solvent thereof; chromatography; recrystallization from a single solvent or a mixed solvent. Can be used alone or in combination as appropriate.
- the recovery and purification of compound JK are carried out by appropriately utilizing known methods as described above. For example, the following methods may be used.
- the cells are collected by centrifuging the culture or treating with an MF membrane, followed by extraction with methanol, concentration of the extracted fraction, and further extraction with getyl ether.
- the extract fraction was concentrated under reduced pressure, further subjected to silica gel chromatography, and hexane,
- the fractionation and purification may be performed by stepwise, z- or continuous elution with ethyl acetate, concentrated under reduced pressure to dryness, fractionated and purified by HPLC (ODS column), concentrated and dried to dryness.
- the compound of the present invention is used as it is or in a pharmaceutically acceptable non-toxic and inert carrier, for example, from 0.1% to 99.5%, preferably from 0.1% to 99.5%. It is administered as a pharmaceutical composition containing 5% to 90%.
- a pharmaceutically acceptable non-toxic and inert carrier for example, from 0.1% to 99.5%, preferably from 0.1% to 99.5%. It is administered as a pharmaceutical composition containing 5% to 90%.
- a solid, semi-solid, or liquid diluent filler, and one or more auxiliary agents for formulation are used.
- the pharmaceutical compositions are administered in dosage unit form.
- the pharmaceutical composition of the present invention can be administered orally, intraosseously, topically (eg, transdermally), or rectally, but can also be used as an external preparation. Needless to say, it is administered in a dosage form suitable for these administration methods.
- the dose is desirable to adjust the dose as an antibacterial agent in consideration of the condition of the patient such as age and weight, the administration route, the nature and extent of the disease, and the like. As a rule, the range of 10 to 200 mg per day is common. In some cases, lower doses may be sufficient, and conversely, higher doses may be required. When administering a large amount, it is desirable to administer it in divided doses several times a day and / or continuously. This compound JK was orally administered to 50 mg / day rats, and no acute toxicity was observed even after 10 days, indicating safety. Oral administration can be carried out in solid or liquid dosage units such as powders, powders, tablets, dragees, capsules, drops, sublingual tablets and other forms.
- Powders are prepared by comminuting the active substance to an appropriate degree. Powders may contain the active ingredient in an appropriate finely divided form, and then a finely divided pharmaceutical carrier such as, for example, starch, Manufactured by mixing with edible carbohydrates and the like, such as carbohydrates. If necessary, flavoring agents, preservatives, dispersing agents, coloring agents, flavors and the like may be added.
- Capsules are manufactured by first filling a powdered powder, powder or granulated preparation into a capsule containing, for example, gelatin capsules. Lubricants and superplasticizers, such as colloidal silica, talc, magnesium stearate, calcium stearate, and solid polyethylene glycol, are mixed with the powder and then filled. Can also.
- disintegrants and solubilizers such as carboxymethyl cellulose, calcium carbonate, and sodium carbonate
- the fine powder of this product can be suspended and dispersed in vegetable oil, polyethylene glycol, glycerin, or a surfactant, and wrapped in a gelatin sheet to prepare a soft capsule. Tablets are made by preparing a powder mixture, granulating or slugging, then adding a disintegrant or lubricant and pressing.
- the powder mixture is prepared by mixing the appropriately powdered substance with the diluent or base described above and, if necessary, a binder (eg, sodium carboxymethylcellulose, alginate, gelatin, polyvinylpyrrolidone, polyvinyl alcohol, etc.), dissolution delay
- a binder eg, sodium carboxymethylcellulose, alginate, gelatin, polyvinylpyrrolidone, polyvinyl alcohol, etc.
- An agent eg, paraffin
- a resorbent eg, quaternary salt
- an adsorbent eg, bentonite, kaolin, dicalcium phosphate, etc.
- the powder mixture can be first moistened with a binder such as syrup, starch paste, gum arabic, cellulose solution or a polymer solution, and then forced through a sieve to form granules. Wear. Instead of granulating the powder in this way, it is also possible to first crush the powder in a tableting machine
- the granules thus prepared can be prevented from adhering to each other by adding stearic acid, stearic acid salt, talc, mineral oil and the like as a lubricant.
- the mixture thus lubricated is then compressed.
- the drug may be directly tableted after binding to a fluid inert carrier without going through the steps of granulation and slag formation as described above.
- Transparent or translucent protective coatings made of shellac sealing coatings, coatings of sugar or polymeric materials, and polish coatings made of wax may also be used.
- compositions such as solutions, syrups and elixirs can also be presented in dosage unit form so that a given quantity is contained.
- Syrups are prepared by dissolving the compound in a suitable flavoring aqueous solution
- elixirs are formulated by dispersing in a non-toxic alcoholic carrier.
- Solubilizers and emulsifiers eg, ethoxylated isostearyl alcohols, polyoxyethylene sorbitol esters
- flavor enhancers eg, peppermint oil, saccharin
- dosage unit formulations for oral administration may be microencapsulated.
- the formulation can also provide an extended period of action or sustained release by coating or embedding in polymers, waxes and the like.
- Parenteral administration can be carried out using liquid dosage unit forms for subcutaneous, intramuscular or intravenous injection, such as solutions and suspensions. These include dissolving a fixed amount of the compound in a non-toxic liquid carrier suitable for injectable use, e.g., aqueous Or by suspending or dissolving in an oily medium and then sterilizing the suspension or solution. Alternatively, an aliquot of the compound may be placed in a vial and the vial and its contents sterilized and sealed. Spare vials or carriers may be provided with the powder or lyophilized active ingredient for dissolution or mixing immediately prior to administration. A non-toxic salt or salt solution may be added to make the injection solution isotonic.
- Rectal administration can be accomplished by using the compound as a suppository with a low melting point solid, such as polyethylene glycol, strength resin, higher esters (eg myristyl palmitate), and mixtures thereof. It can also be applied directly to the affected area as an external preparation.
- a low melting point solid such as polyethylene glycol, strength resin, higher esters (eg myristyl palmitate), and mixtures thereof. It can also be applied directly to the affected area as an external preparation.
- Actinomadura pelletieri IFM 0903 strain (FERM BP-7030) was inoculated into 25 ml of Brain Heart Infusion liquid medium (manufactured by Difco) supplemented with 2% glucose in a 50 ml Erlenmeyer flask at 30 ° C; shaken for 72 hours. Culture was continued. 2 ml of this was further inoculated into a 500 ml Erlenmeyer flask in which 200 ml of the same medium was dispensed, and the same preculture was performed.
- This preculture (1.5 L) is made up of glucose 2%, meat extract (Wako Pure Chemical Industries, Ltd.) 0.5%, polypeptone P1 0.5%, polypeptone (Nippon Pharmaceutical Co., Ltd.) 0.5%, chloride Production medium consisting of 0.3% sodium, pH 7.0 15
- the inoculum was inoculated into a 2 OL tank cultivation tank containing L, and the cells were cultured for 90 hours at 28 ° C, aeration rate of 15 rpm, stirring speed of 200 rpm.
- the cells were collected by filtering 15 L of the obtained culture with a filter cloth. 3 L of methanol was added to the cells to perform extraction, and this extract was concentrated on an evaporator. 300 ml of distilled water was added to the concentrated solution, and the mixture was partitioned and extracted three times with 1 L of ethyl acetate. The ethyl acetate layer (3 L) was concentrated and evaporated to dryness on an evaporator, and subjected to silica gel column chromatography (column size; 3 cm x 20 cm). Elution was carried out stepwise with 1 L each of n-hexane and ethyl acetate at 40: 1, 20: 1 and 5: 1.
- cell growth was measured by a dye assay using 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide (MTT). . That is, 2 mg / ml MTT solution is added to each well at 20/1, and after culturing at 37 ° C for 4 hours, the formazan crystals formed in the cells are prepared with 50% dimethylformamide solution. The resulting 20% sodium dodecyl sulfate solution was added at 50/1 and dissolved, and the absorbance at 570 thighs was measured using a microplate absorptiometer (Imnoreader I) to use as an index of growth. The growth inhibition rate was calculated from the following formula, and the concentration of the sample that inhibited growth by 50% (IC 5e value) was determined from the relationship between the sample concentration and the inhibition rate.
- MTT 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide
- the antimicrobial activity of JK-1 was determined by measuring the minimum inhibitory concentration (MIC) as follows.
- JK MIC values for various microorganisms were determined in a Murat-Hinton medium containing 0.2% glucose, based on the rules of the Japanese Society of Chemotherapy (Summary of Antibiotics, 4th Edition, The University of Tokyo Press 1992). JK-1 was dissolved in methanol and diluted using the above medium, and the dilution was prepared by repeating the 2-fold dilution from a concentration of 1 mg / ml. The test bacteria were prepared at 1 ⁇ 10 6 / ml in the above medium and used as the test bacteria solution. The JK solution 20 ⁇ 1 and the test bacterial solution 180 ⁇ 1 were dispensed into a 96-well microplate and cultured at 37 ° C. 24 The growth of the 4th hour was confirmed visually and Ml. The value was calculated. The results obtained are shown in Tables 5 and 6 below.
- Bacillus subtil is PCI 189 0.39
- JK-1 has a strong antibacterial activity against gram-positive bacteria with a MIC value of 0.025 to 0.39 g / ml showed that.
- gram-negative bacteria and fungi have antibacterial activity. I didn't.
- Staphylococcus aureus Staphylococcus aureus
- MRS A which is a multidrug resistant strain of the drug
- Tablets were produced from (1) 20 g of the compound JK produced in Example 1, (2) 80 g of lactose, (3) 30 g of corn starch, and (4) 2 g of magnesium stearate. That is, (1), (2) and (3) (but 15 g) are mixed, (3) (5 g) and (4) are added and mixed well, and this mixture is compressed by a compression tablet machine. Then, 800 tablets each containing 25 mg of the active ingredient (1) were produced.
- the invention's effect was produced from (1) 20 g of the compound JK produced in Example 1, (2) 80 g of lactose, (3) 30 g of corn starch, and (4) 2 g of magnesium stearate. That is, (1), (2) and (3) (but 15 g) are mixed, (3) (5 g) and (4) are added and mixed well, and this mixture is compressed by a compression tablet machine. Then, 800 tablets each containing 25 mg of the active ingredient (1) were produced.
- the invention's effect was produced from (1) 20 g of the compound JK produced in Example 1, (2) 80 g
- the present invention provides compound JK.
- This compound is a novel substance, has excellent physiological activity, and is an antibiotic-resistant bacterium such as MRSA, which has recently become a particular problem, for example, in hospital-acquired infections. It can be used in various pharmaceuticals as an antibacterial agent effective against (more effective than vancomycin) and other various antibacterial agents.
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Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01906262A EP1201677A4 (en) | 2000-03-01 | 2001-02-23 | NEW JK MACROLIDE COMPOUND |
| US09/926,403 US6693085B2 (en) | 2000-03-01 | 2001-02-23 | Macrolide compound JK |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000056538A JP3703677B2 (ja) | 2000-03-01 | 2000-03-01 | 新規マクロライド系化合物jk |
| JP2000-56538 | 2000-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001064700A1 true WO2001064700A1 (en) | 2001-09-07 |
Family
ID=18577466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2001/001363 Ceased WO2001064700A1 (en) | 2000-03-01 | 2001-02-23 | Novel macrolide compound jk |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6693085B2 (ja) |
| EP (1) | EP1201677A4 (ja) |
| JP (1) | JP3703677B2 (ja) |
| WO (1) | WO2001064700A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118063531B (zh) * | 2024-04-17 | 2024-07-23 | 中国科学院南海海洋研究所 | 大环内酯类化合物PA-46101s C-E的制备及其应用 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8813150D0 (en) * | 1988-06-03 | 1988-07-06 | American Cyanamid Co | Chemical compounds |
| US5096817A (en) * | 1988-06-07 | 1992-03-17 | Bristol-Myers Company | Process for producing antibiotics BU-3608 D and BU-3608 E |
| CA2016382A1 (en) * | 1989-05-12 | 1990-11-12 | Marvin M. Hoehn | A59770 antibiotics |
-
2000
- 2000-03-01 JP JP2000056538A patent/JP3703677B2/ja not_active Expired - Fee Related
-
2001
- 2001-02-23 WO PCT/JP2001/001363 patent/WO2001064700A1/ja not_active Ceased
- 2001-02-23 US US09/926,403 patent/US6693085B2/en not_active Expired - Fee Related
- 2001-02-23 EP EP01906262A patent/EP1201677A4/en not_active Withdrawn
Non-Patent Citations (5)
Also Published As
| Publication number | Publication date |
|---|---|
| JP3703677B2 (ja) | 2005-10-05 |
| US6693085B2 (en) | 2004-02-17 |
| EP1201677A1 (en) | 2002-05-02 |
| EP1201677A4 (en) | 2003-05-28 |
| JP2001238692A (ja) | 2001-09-04 |
| US20030069193A1 (en) | 2003-04-10 |
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