ChemicalBook Deutsch Chinesisch   Japanisch   Englisch   Korea
ChemicalBook > Produktkatalog >Aktive pharmazeutische Wirkstoffe (APIs) >Antibiotika >Makrolide >Telithromycin

Telithromycin Produkt Beschreibung

CAS-Nr.191114-48-4
Bezeichnung:
Englisch Name:Telithromycin
Synonyma:
KETEK;RU 66647;HMR 3647;TELITHROMYCIN;TelithroMycin 90%;(1R,2R,4R,6S,7R,8R,10R,13R,14S)-7-[(2S,3R,4S,6R)-4-Dimethylamino-3-hydroxy-6-methyloxan-2-yl]oxy-13-ethyl-6-methoxy-2,4,6,8,10,14-hexamethyl-17-[4-(4-pyridin-3-ylimidazol-1-yl)butyl]-12,15-dioxa-17-azabicyclo[12.3.0]heptadecane-3,9,11,16-tetrone;2H-Oxacyclotetradecino[4,3-d]oxazole-2,6,8,14(1H,7H,9H)-tetrone,4-ethyloctahydro-11-Methoxy-3a,7,9,11,13,15-hexaMethyl-1-[4-[4-(3-pyridinyl)-1H-iMidazol-1-yl]butyl]-10-[[3,4,6-trideoxy-3-(diMethylaMino)-b-D-xylo-hexopyranosyl]oxy]-,(3aS,4R,7R,9R,10R,11R,1;(3aS,4R,7R,9R,10R,11R,13R,15R,15aR)-4-Ethyloctahydro-11-Methoxy-3a,7,9,11,13,15-hexaMethyl-1-[4-[4-(3-pyridinyl)-1H-iMidazol-1-yl]butyl]-10-[[3,4,6-trideoxy-3-(diMethylaMino)-β-D-xylo-hexopyranosyl]oxy]-2H-oxacyclotetradecino[4,3-d]oxazole-2,6,8,14(1H,7H,9H)tetrone
CBNumber:CB1482102
Summenformel:C43H65N5O10
Molgewicht:812
MOL-Datei:191114-48-4.mol
Telithromycin physikalisch-chemischer Eigenschaften
Schmelzpunkt:: 176-188 C
Siedepunkt:: 966℃
RTECS-Nr.: KF4674500
Flammpunkt:: >110°(230°F)
storage temp. : -20?C Freezer
Wasserlöslichkeit: Sparingly soluble in water
CAS Datenbank: 191114-48-4(CAS DataBase Reference)
Sicherheit
Kennzeichnung gefährlicher: Xi
R-Sätze:: 36/37/38
S-Sätze:: 26-36
HazardClass : 9
Giftige Stoffe Daten: 191114-48-4(Hazardous Substances Data)

Telithromycin Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Telithromycin was first launched in Germany as a once-daily oral treatment for respiratory infections including community-acquired pneumonia, acute bacterial exacerbations of chronic bronchitis, acute sinusitis and tonsillitis/pharyngitis. This semisynthetic derivative of the natural macrolide erythromycin is the first marketed ketolide, a new class of antibiotics featuring a C3-ketone instead of the L-cladinose group. The 14-membered ring antibacterial agent prevents bacterial protein synthesis by binding to two domains of the 50S subunit of bacterial ribosomes. It shows potent in vitro activity against common respiratory pathogens including Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis and Streptococcus pyogenes as well as other atypical pathogens. The 3-keto group confers increased acidic stability and reduced induction of macrolide-lincosamide-streptogramin B resistance that is frequently observed with macrolides. The substituted C11-C12 carbamate residue appears not only to increase affinity for the ribosomal binding site but also to stabilize the compound against esterase hydrolysis and avoid resistance due to elimination of macrolides from the cell by an efflux pump encoded by the mef gene in certain pathogens. Telithromycin is both a competitive inhibitor and a substrate of CYP3A4. However, unlike several macrolides such as troleandomycin, it does not form a stable inhibitory CYP P-450 Fe2+-nitrosoalkane metabolite complex which is potentially hepatotoxic. The drug is well tolerated and well distributed into pulmonary tissues, bronchial secretions, tonsils and saliva. It turns out to be highly concentrated in azurophil granules of polymorphonuclear neutrophils thereby facilitating its delivery to the phagocytosed bacteria.
Chemische Eigenschaften
Pale Beige Solid
Originator
Aventis (France)
Verwenden
Telithromycin represents the first member of the current generation of erythromycin descendants, belonging to the ketolide class. The ketolides are characterised by the hydrolysis of the cladinose sugar and subsequent oxidation of the alcohol to a ketone. Telithromycin is acid stabile and has good activity against erythromycin-resistant S. aureus, and improved pharmacokinetics.
Verwenden
A ketolide antibiotic, used to treat respiratory infections
Trademarks
Ketek (Sanofi Aventis).
Antimicrobial activity
The spectrum covers Gram-positive and Gramnegative cocci, Gram-positive bacilli, fastidious Gram-negative bacilli, atypical mycobacteria, M. leprae, H. pylori, anaerobes, T. pallidum, intracellular pathogens and atypical organisms.
It exhibits bactericidal activity in vitro against isolates of Str. pneumoniae regardless of the underlying resistance to penicillin G, erythromycin A and other agents. It is 2–4 times more active than clarithromycin against erythromycin A-susceptible isolates of Str. pneumoniae and other streptococci. Against H. influenzae the MIC range is 1–4 mg/L. It also exhibits good in-vitro activity against Coxiella burnetii (MIC 1 mg/L) and various Gram-positive species, including viridans streptococci (MIC ≤0.015–0.25 mg/L), C. diphtheriae (MIC 0.004–0.008 mg/L) and Listeria spp. (MIC 0.03–0.25 mg/L).
Acquired resistance
It retains activity against isolates resistant to erythromycin A. Str. pneumoniae and Str. pyogenes isolates for which the MIC of telithromycin is above the resistance breakpoint of 2 mg/L are presently rare. It is not active against Staph. aureus isolates that owe their resistance to erythromycin to constitutive methylation of adenine 2058 on domain V of the peptidyl transferase loop.
Allgemeine Beschreibung
Telithromycin (Ketek) is an orally bioavailable macrolide.The antibiotic is semisynthetic. Telithromycin is classifiedas a ketolide, and it differs chemically from the macrolidegroup of antibacterials by the lack of α-L-cladinose at 3-position of the erythronolide A ring, resulting in a 3-ketofunction. It is further characterized by imidazolyl andpyridyl rings inked to the macrolide nucleus through a butylchain. The mechanism of action of telithromycin is the sameas that of the macrolide class.
Telithromycin causes a blockade of protein synthesis bybinding to domains II and V of 23S rRNA of the 50S ribosomalsubunit. Because telithromycin binds at domain II,activity against Gram-positive cocci is retained in the presenceof resistance mediated by methylases that alter thedomain V binding site. The antibiotic is also believed to inhibitthe assembly of ribosomes. Resistance to telithromycinoccurs because of riboprotein mutations.
Pharmazeutische Anwendungen
A 14-membered-ring ketolide, obtained by semisynthesis from erythromycin A. Formulated for oral administration.
Pharmakokinetik
Oral absorption :90%
Cmax 800 mg oral :1.9–2.27 mg/L (steady state after 2–3 days)
Plasma half-life: 10–12 h
Volume of distribution :210 L
Plasma protein binding:60–70%
After oral administration the absolute bioavailability is 57% in both young and elderly subjects. The rate and extent of absorption are not influenced by food. In a study of ascending doses administered to healthy volunteers, peak plasma concentration ranged from 0.8 mg/L (400 mg dose) to 6 mg/L (2400 mg dose). The peak plasma concentration was reached after 1–2 h. The apparent elimination half-lives ranged from 10 to 14 h, with an AUC of 2.6 mg.h/L (400 mg dose) to 43.3 mg.h/L (2400 mg dose). After repeated oral doses the ratios between day 1 and day 10 ranged from 1.3 to 1.5. After once-daily oral dosing with 800 mg, the AUC is 8.25 mg.h/L.
Nebenwirkungen
It is generally well tolerated. The main adverse event is diarrhea.
Telithromycin Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Telithromycin Anbieter Lieferant Produzent Hersteller Vertrieb Händler.      Global( 95)Lieferanten     
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21954 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693info@tianfuchem.com CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733sales@mainchem.com CHINA 32457 55
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093export@haihangchem.com CHINA 4669 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
LGM Pharma 1-(800)-881-8210
615-250-9817inquiries@lgmpharma.com United States 1943 70
Nanjing Chemlin Chemical Co., Ltd 025-83697070
+86-25-83453306sales@chemlin.com.cn China 19982 64
Chemsky(shanghai)International Co.,Ltd. 021-50135380
shchemsky@sina.com China 32365 50
Hangzhou Yuhao Chemical Technology Co., Ltd 0571-82693216
+86-571-82880190info@yuhaochemical.com China 9409 52
Beijing HuaMeiHuLiBiological Chemical 010-56205725;010-86181995
010-65763397waley188@sohu.com China 12343 58
 
191114-48-4(Telithromycin)Verwandte Suche:
Thiamphenicol Benzathinbenzylpenicillin 4-(Dimethylamino)-1,4,4a,5,-5a,6,11,12a-octahydro-3,5,6,-10,12,12a-hexahydroxy-6-methyl-1,11-dioxo-2-naphtacencarboxamid N,N-Dimethyl-1,3-diaminopropan 3,6-Bis[(4-chlor-2-phosphonophenyl)azo]-4,5-dihydroxynaphthalin-2,7-disulfonsure
(3aS,4R,7R,9R,10R,11R,13R,15R,15aR)-4-Ethyloctahydro-11-Methoxy-3a,7,9,11,13,15-hexaMethyl-1-[4-[4-(3-pyridinyl)-1H-iMidazol-1-yl]butyl]-10-[[3,4,6-trideoxy-3-(diMethylaMino)-β-D-xylo-hexopyranosyl]oxy]-2H-oxacyclotetradecino[4,3-d]oxazole-2,6,8,14(1H,7H,9H)tetrone HMR 3647 RU 66647 2H-Oxacyclotetradecino[4,3-d]oxazole-2,6,8,14(1H,7H,9H)-tetrone,4-ethyloctahydro-11-Methoxy-3a,7,9,11,13,15-hexaMethyl-1-[4-[4-(3-pyridinyl)-1H-iMidazol-1-yl]butyl]-10-[[3,4,6-trideoxy-3-(diMethylaMino)-b-D-xylo-hexopyranosyl]oxy]-,(3aS,4R,7R,9R,10R,11R,1 TELITHROMYCIN KETEK (1R,2R,4R,6S,7R,8R,10R,13R,14S)-7-[(2S,3R,4S,6R)-4-Dimethylamino-3-hydroxy-6-methyloxan-2-yl]oxy-13-ethyl-6-methoxy-2,4,6,8,10,14-hexamethyl-17-[4-(4-pyridin-3-ylimidazol-1-yl)butyl]-12,15-dioxa-17-azabicyclo[12.3.0]heptadecane-3,9,11,16-tetrone TelithroMycin 90% 191114-48-4 C43H65N5O10 Pharmaceuticals Amines Aromatics Carbohydrates & Derivatives Heterocycles Intermediates & Fine Chemicals
Urheberrecht 2017 © ChemicalBook. Alle Rechte vorbehalten.