Solithromycin

Solithromycin

Clinical data
Trade names	Solithera
Routes of administration	Oral, intravenous
ATC code	J01FA16 (WHO)
Legal status
Legal status	Under FDA and EMA review for approval
Identifiers
IUPAC name (3aS,4R,7S,9R,10R,11R,13R,15R,15aR)-1-[4-[4-(3-aminophenyl)-1H-1,2,3-triazol-1-yl]butyl]-4-ethyl-7-fluorooctahydro-11-methoxy-3a,7,9,11,13,15-hexamethyl-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
Synonyms	CEM-101; OP-1068
CAS Number	760981-83-7 Y
DrugBank	DB09308 N
ChemSpider	25056854 N
UNII	9U1ETH79CK
KEGG	D09965 N
ChEMBL	CHEMBL1240704 N
Chemical and physical data
Formula	C43H65FN6O10
Molar mass	845.01 g/mol
3D model (Jmol)	Interactive image
SMILES CC[C@@H]1[C@@]2([C@@H]([C@H](C(=O)[C@@H](C[C@@]([C@@H]([C@H](C(=O)[C@](C(=O)O1)(C)F)C)O[C@H]3[C@@H]([C@H](C[C@H](O3)C)N(C)C)O)(C)OC)C)C)N(C(=O)O2)CCCCn4cc(nn4)c5cccc(c5)N)C
InChI InChI=1S/C43H65FN6O10/c1-12-32-43(8)35(50(40(55)60-43)19-14-13-18-49-23-30(46-47-49)28-16-15-17-29(45)21-28)26(4)33(51)24(2)22-41(6,56-11)37(27(5)36(53)42(7,44)39(54)58-32)59-38-34(52)31(48(9)10)20-25(3)57-38/h15-17,21,23-27,31-32,34-35,37-38,52H,12-14,18-20,22,45H2,1-11H3/t24-,25-,26+,27+,31+,32-,34-,35-,37-,38+,41-,42+,43-/m1/s1 N Key:IXXFZUPTQVDPPK-ZAWHAJPISA-N N
NY (what is this?)

Solithromycin (trade name Solithera) is a ketolide antibiotic undergoing clinical development for the treatment of community-acquired pneumonia (CAP) and other infections.

Solithromycin exhibits excellent in vitro activity against a broad spectrum of Gram-positive respiratory tract pathogens, including macrolide-resistant strains. Solithromycin has activity against most common respiratory Gram-(+) and fastidious Gram-(-) pathogens, and is being evaluated for its utility in treating gonorrhea.

X-ray crystallography studies have shown solithromycin, the first fluoroketolide in clinical development, has a third region of interactions with the bacterial ribosome, as compared with two binding sites for other ketolides.

The only (previously) marketed ketolide, telithromycin, suffers from rare but serious side effects. Recent studies have shown this to be likely due to the presence of the pyridine-imidazole group of the telithromycin side chain acting as an antagonist towards various nicotinic acetylcholine receptors.