Tylosin

Tylosin

Clinical data
Trade names	Tylocine, Tylan
AHFS/Drugs.com	International Drug Names
ATCvet code	QJ01FA90 (WHO) QJ51FA90 (WHO)
Identifiers
IUPAC name [(2R,3R,4E,6E,9R,11R,12S,13S,14R) -12- {[3,6-dideoxy-4-O-(2,6-dideoxy-3-C-methyl-α-L-ribo-hexopyranosyl) -3- (dimethylamino)-β-D-glucopyranosyl]oxy}-2-ethyl-14-hydroxy-5, 9,13-trimethyl-8, 16-dioxo-11-(2-oxoethyl)oxacyclohexadeca-4,6-dien-3-yl]methyl 6-deoxy-2,3-di-O-methyl-β-D-allopyranoside
CAS Number	1401-69-0 Y
PubChem CID	5280440
ChemSpider	4444097 N
UNII	YEF4JXN031
KEGG	D02490 Y
ChEBI	CHEBI:17658 N
ChEMBL	CHEMBL42743 N
E number	E713 (antibiotics)
ECHA InfoCard	100.014.322
Chemical and physical data
Formula	C46H77NO17
Molar mass	916.10 g/mol
3D model (Jmol)	Interactive image
SMILES CC[C@@H]1[C@H](/C=C(/C=C/C(=O)[C@@H](C[C@@H]([C@@H]([C@H]([C@@H](CC(=O)O1)O)C)O[C@H]2[C@@H]([C@H]([C@@H]([C@H](O2)C)O[C@H]3C[C@@]([C@H]([C@@H](O3)C)O)(C)O)N(C)C)O)CC=O)C)\C)CO[C@H]4[C@@H]([C@@H]([C@@H]([C@H](O4)C)O)OC)OC
InChI InChI=1S/C46H77NO17/c1-13-33-30(22-58-45-42(57-12)41(56-11)37(52)26(5)60-45)18-23(2)14-15-31(49)24(3)19-29(16-17-48)39(25(4)32(50)20-34(51)62-33)64-44-38(53)36(47(9)10)40(27(6)61-44)63-35-21-46(8,55)43(54)28(7)59-35/h14-15,17-18,24-30,32-33,35-45,50,52-55H,13,16,19-22H2,1-12H3/b15-14+,23-18+/t24-,25+,26-,27-,28+,29+,30-,32-,33-,35+,36-,37-,38-,39-,40-,41-,42-,43+,44+,45-,46-/m1/s1 N Key:WBPYTXDJUQJLPQ-VMXQISHHSA-N N
NY (what is this?)

Tylosin is an antibiotic and a bacteriostatic feed additive used in veterinary medicine. It has a broad spectrum of activity against Gram-positive organisms and a limited range of Gram-negative organisms. It is found naturally as a fermentation product of Streptomyces fradiae. It is a macrolide antibiotic.

Tylosin is used in veterinary medicine to treat bacterial infections in a wide range of species and has a high margin of safety. It has also been used as a growth promotant in some species, and as a treatment for colitis in companion animals.

Like other macrolides, tylosin has a bacteriostatic effect on susceptible organisms, caused by inhibition of protein synthesis through binding to the 50S subunit of the bacterial ribosome.

Tylosin has a wide spectrum of activity against Gram-positive bacteria including Staphylococcus, , Corynebacterium, and Erysipelothrix. It has a much narrower Gram-negative spectrum of activity, but has been shown to be active against Campylobacter coli, and certain spirochaetes. It has also been shown to be extremely active against Mycoplasma species isolated from both mammalian and avian hosts. The following represents MIC susceptibility data for a few medically significant pathogens:

Tylosin has been used to treat a variety of different diseases throughout the world. Differing formulations and licensing conditions mean it may not be a recognized method of treatment for certain conditions in certain countries. In general, tylosin is licensed for the treatment of infections caused by organisms susceptible to the drug, but it has also been used as a treatment of colitis in small animals, as a growth promotant in food-producing animals, and as a way of reducing epiphora (tear staining) around the eyes of white-faced dogs. In these cases, the result is positive only when using the tylosin in the form of tartrate, a chelating porphyrin. No marketing authority exists for the use of other tylosin forms as a tear-stain remover, thus it is not legal to use it for such purposes; the exception is as a prescription-only medicine of last resort by veterinarians under the cascading rule (UK) or the extra-label use rule (US).