Intermediate for azithromycin
November 13, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References11-Aza-10-deoxo-10-dihydroerythromycin A and derivatives thereof as well as a process for their preparation 4"-Epi erythromycin A and derivatives thereof as useful antibacterial agents Antibacterial 9-deoxo-9a-alkyl-9a-aza-9a-homoerythromycin A derivatives and intermediates therefore N-Methyl 11-aza-10-deoxo-10-dihydro-erytromycin A, intermediates therefor 9-Aza-9-homoerythromycin compounds, pharmaceutical composition and therapeutic method 11-Methyl-11-aza-4-0-cladinosyl-6-0-desosaminyl-15-ethyl-7,1 3,14-trihydroxy-3,5,7,9,12,14-hexamethyl-oxacyclopentadecane-2-one and derivatives thereof 9-Aza-9-homoerythromycin compounds, pharmaceutical compositions and therapeutic method Epimeric azahomoerythromycin A derivative, intermediates and method of use 8a-AZA-8a-homoerythromycin cyclic iminoethers 8a-aza-8a-homoerythromycin lactams Patent #: 5202434 InventorApplicationNo. 537741 filed on 11/13/1995US Classes:536/7.1, Oxygen containing hetero ring having 12-19 members (e.g., methymycin, carbomycin, spiramycin, etc.)536/18.5, Processes536/125IsomerizationExaminersPrimary: Kight, JohnAssistant: Lee, Howard C. Attorney, Agent or FirmForeign Patent References
International ClassesC07H 017/08C08B 001/00 AbstractA compound having formula (III). Also, a process of making azithromycin comprising reducing the compound of formula (III) and N-methylating the reduced product.Other References
Field of SearchErythromycin or derivative (e.g., oleandomycin, etc.)Nitrogen containing Nitrogen containing hetero ring Nitrogen in aglycone moiety Nitrogen in aglycone moiety Processes Oxygen containing hetero ring having 12-19 members (e.g., methymycin, carbomycin, spiramycin, etc.) Isomerization The hetero ring has exactly 13 ring carbons (e.g., erythromycin, etc.) |
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