| Identification | Back Directory | [Name]
MIDECAMYCIN | [CAS]
35457-80-8 | [Synonyms]
sf837
Aboren
Myoxam
Midecin
Momicin
Macropen
YL 704B1
SF 837A1
MoMicine
medemycin
Rubimycin
Normicina
NSC 154011
medecamycin
MIDECAMYCIN
mydecamycin
MIDECAMYCINE
Turimycin P3
espinomycina
Medemycin A1
Midecamycin A1
Medecamycin A1
Mydecamycin A1
platenomycinb1
antibioticsf837
turimycinp(sub3)
Midecamycin, >98%
antibioticsf837a1
antibioticyl704b1
midecamycina(sub1)
Midecamycin (>85%)
MIDECAMYCIN USP/EP/BP
DMUAPQTXSSNEDD-BJXZGPOLSA-N
LeucoMycin V 3,4B-Dipropanoate
LEUCOMYCIN V 3,4B-DIPROPIONATE
Leucomycin V 3,4''-dipropionate
leucomycinv,3,4(supb)-dipropanoate
Leucomycin V, 3,4B-dipropanoate (9CI)
Oxacyclohexadecane, leucomycin V deriv.
MIDECAMYCIN FROM STREPTOMYCES &
Leucomycin V 3,4B-dipropionate
midecamycin from streptomyces*mycarofaciens
propanoic acid [(11Z,13E)-6-[[(2S,3R,4R,5S,6R)-4-(dimethylamino)-3-hydroxy-5-[[(2S,4R,5R,6R)-4-hydroxy-4,6-dimethyl-5-(1-oxopropoxy)-2-oxanyl]oxy]-6-methyl-2-oxanyl]oxy]-10-hydroxy-5-methoxy-9,16-dime
(2S,3S,4R,6S)-6-{[(2R,3S,4R,5R,6S)-4-(dimethylamino)-5-hydroxy-6-{[(4R,5S,6S,7R,9R,10R,11E,13E,16R)-10-hydroxy-5-methoxy-9,16-dimethyl-2-oxo-7-(2-oxoethyl)-4-(propanoyloxy)-1-oxacyclohexadeca-11,13-dien-6-yl]oxy}-2-methyloxan-3-yl]oxy}-4-hydroxy-2,4-dimethyloxan-3-yl propanoate | [EINECS(EC#)]
252-578-0 | [Molecular Formula]
C41H67NO15 | [MDL Number]
MFCD00865000 | [MOL File]
35457-80-8.mol | [Molecular Weight]
813.97 |
| Questions And Answer | Back Directory | [Preparation]
1) Adjust the fermentation broth of midecamycin to acidity, filter it using a ceramic membrane filter, and after filtration, top with 1-2 times the volume of purified aqueous solution with pH adjusted to 4.0-5.0, collecting all the filtrate;
2) Adjust the filtrate to alkaline, add butyl acetate for extraction, the volume of butyl acetate being 10%-15% of the filtrate volume;
3) Invert the above extract in an acidic solution;
4) Adjust the pH of the inverted solution to 8.0-8.5 using an alkaline solution, add butyl acetate at 10%-15% of the inverted solution volume, and extract at 45-50°C. After obtaining the extract, gradually add purified water with pH 6.0-8.0 at room temperature until a large amount of crystals precipitate;
5) After separating the crystals using a centrifuge, wash the crystals with 1-2 times the volume of 50% butyl acetate solution (by weight of the wet crystals), and dry to obtain the midecamycin product. |
| Chemical Properties | Back Directory | [Melting point ]
155℃ -156℃ | [alpha ]
D23 -67° (c = 1 in ethanol) | [Boiling point ]
874℃ | [density ]
1.1651 (rough estimate) | [refractive index ]
1.6220 (estimate) | [Fp ]
>110°(230°F) | [storage temp. ]
2-8°C | [solubility ]
Chloroform (Slightly), Ethanol (Slightly), Methanol (Slightly) | [form ]
Solid | [pka]
6.9 in 50% aq ethanol | [color ]
White to Off-White | [Water Solubility ]
Soluble in methanol or ethanol. Insoluble in water | [InChIKey]
DMUAPQTXSSNEDD-INMHWYRMNA-N |
| Hazard Information | Back Directory | [Description]
Midecamycin, a macrolide antibiotic having a 16-membered lactone ring, was found in the culture broth of Streptomyces mycarofaciens by Meiji Seika Kaisha in 1971. Under specific culture conditions, it is produced by the organism as a single component. Midecamycin shows almost the same antimicrobial spectrum and activity as kitasamycin. Although its serum and urine concentrations are low, it distributes in tissues at high concentration following oral administration. | [Chemical Properties]
White Solid | [Originator]
Medemycin,Meiji Seika,Japan,1974 | [Uses]
A 16-membered ring macrolide antibiotic used in ophthalmology as well as other medical fields. | [Definition]
ChEBI: Midecamycin is an organic molecular entity. | [Manufacturing Process]
The SF-837 strain, namely Streptomyces mycarofaciens identified as ATCC No.
21454 was inoculated to 60 liters of a liquid culture medium containing 2.5%
saccharified starch, 4% soluble vegetable protein, 0.3% potassium chloride
and 0.3% calcium carbonate at pH 7.0, and then stir-cultured in a jarfermenter at 28°C for 35 hours under aeration. The resulting culture was
filtered directly and the filter cake comprising the mycelium cake was washed
with dilute hydrochloric acid.
The culture filtrate combined with the washing liquid was obtained at a total
volume of 50 liters (potency 150 mcg/ml). The filtrate (pH 8) was then
extracted with 25 liters of ethyl acetate and 22 liters of the ethyl acetate
phase was concentrated to approximately 3 liters under reduced pressure. The
concentrate was diluted with 1.5 liters of water, adjusted to pH 2.0 by addition
of 5N hydrochloric acid and then shaken thoroughly. The aqueous phase was
separated from the organic phase and this aqueous solution was adjusted to
pH 8 by addition of 3N sodium hydroxide and then extracted with 800 rnl of
ethyl acetate. The resulting ethyl acetate extract was then shaken similarly
together with 500 ml of aqueous hydrochloric acid to transfer the active
substances into the latter which was again extracted with 400 ml of ethyl
ether at pH 8.The ether extract was dried with anhydrous sodium sulfate and
concentrated under reduced pressure to give 16.5 g of light yellow colored
powder.
12 g of this crude powder were dissolved in 200 ml of ethyl acetate and the
solution was passed through a column of 600 ml of pulverized carbon which
had been impregnated with ethyl acetate. The development was carried out
using ethyl acetate as the solvent and the active fractions of eluate were
collected to a total volume of 2,500 ml, which was then evaporated to dryness
under reduced pressure to yield 5 g of a white colored powder. This powder
was dissolved in 10 ml of benzene and the insoluble matters were filtered out.
The filtered solution in benzene was then subjected to chromatographic
isolation by passing through a column of 700 ml of silica gel which had been
impregnated with benzene. The development of the active substances
adsorbed on the silica gel was effected using a solvent system consisting of
benzene-acetone (4:1), and the eluate was collected in fractions of each 20
ml. The active fractions No. 90-380 which gave a single spot in alumina thin
layer chromatography and which could be recognized as containing the SF-
837 substance purely in view of the Rf-value of the single spot were combined
together to a total volume of 4,000 ml, and then concentrated under reduced
pressure to yield 1.5 g of white colored powder of a melting point of 122°C to
124°C which was found by analysis to be the pure SF-837 substance free
base. | [Therapeutic Function]
Antibacterial | [Pharmaceutical Applications]
A naturally occurring metabolite of Streptomyces mycarofaciens, supplied as the native compound and as midecamycin acetate for oral administration.
It is rapidly and extensively metabolized and is said to exhibit less toxicity than earlier macrolides. It is of limited availability. |
|
| Company Name: |
J & K SCIENTIFIC LTD.
|
| Telephone: |
18210857532 18210857532 |
| Website: |
https://www.jkchemical.com |
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