Novel methods of treating hearing loss
US-2024390323-A1 · Nov 28, 2024 · US
US10765645B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10765645-B2 |
| Application number | US-201816158608-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 12, 2018 |
| Priority date | Jun 6, 2014 |
| Publication date | Sep 8, 2020 |
| Grant date | Sep 8, 2020 |
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This application describes a compound represented by Formula (I): Y Z X 1 —S(O)(X 2 )F) m ] n (I) wherein: Y is a biologically active organic core group comprising one or more of an aryl group, a heteroaryl aryl group, a nonaromatic hydrocarbyl group, and a nonaromatic heterocyclic group, to which Z is covalently bonded; n is 1, 2, 3, 4 or 5; m is 1 or 2; Z is O, NR, or N; X 1 is a covalent bond or —CH 2 CH 2 —, X 2 is O or NR; and R comprises H or a substituted or unsubstituted group selected from an aryl group, a heteroaryl aryl group, a nonaromatic hydrocarbyl group, and a nonaromatic heterocyclic group. Methods of preparing the compounds, methods of using the compounds, and pharmaceutical compositions comprising the compounds are described as well.
Opening claim text (preview).
We claim: 1. A method of preparing a compound of Formula (I): Y Z X 1 —S(O)(X 2 )F) m ] n (I) wherein at least one Z of the compound is N or NR; the method comprising reacting a precursor antibiotic bearing an NH 2 or NHR substituent with CH 2 ═CH—SO 2 F by a Michael addition to replace the hydrogens of the NH 2 or the hydrogen of the NHR with —CH 2 CH 2 —SO 2 F; wherein: Y is an antibiotic core group comprising one or more unsubstituted or substituted moiety selected from an aryl group, a heteroaryl aryl group, a nonaromatic hydrocarbyl group, a nonaromatic heterocyclic group, to which each Z independently is covalently bonded; n is 1, 2, 3, 4 or 5; each Z independently is NR, or N; when Z is NR, m is 1, X 1 is a covalent bond or CH 2 CH 2 , and the Z is covalently bonded to a nonaromatic hydrocarbyl, a nonaromatic heterocyclic, an aryl, or heteroaryl moiety of Y; when Z is N, either (a) m is 2, X 1 is CH 2 CH 2 and the Z is covalently bonded to a nonaromatic hydrocarbyl, a nonaromatic heterocyclic, an aryl, or a heteroaryl moiety of Y; or (b) m is 1, X 1 is a covalent bond or CH 2 CH 2 , and the Z is a nitrogen in an aromatic or non-aromatic heterocyclic ring portion of core group Y; each X 2 independently is O or NR; and each R independently comprises H or a substituted or unsubstituted group selected from an aryl group, a heteroaryl aryl group, a nonaromatic hydrocarbyl group, and a nonaromatic heterocyclic group. 2. The method of claim 1 , wherein the antibiotic is selected from the group consisting of a cephalosporin, ciprofloxacin, sulfacetamide, amoxicillin, sulfanilamide, sulfamethoxazole, norfloxacin, gatifloxacin, gemifloxacin, trimethoprim, pyrimethamine, cefadroxil, isoniazid, streptomycin, moxifloxacin, and aminosalicylic acid. 3. The method of claim 1 , wherein the antibiotic is selected from the group consisting of a cephalosporin or ciprofloxacin. 4. The method of claim 1 , wherein the precursor bearing an NH 2 group is cefadroxil and the cefadroxil is reacted with at least two equivalents of CH 2 ═CH—SO 2 F to produce a product of formula:
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7-Aminocephalosporanic or substituted 7-aminocephalosporanic acids · CPC title
ortho- or peri-condensed with heterocyclic ring systems · CPC title
having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin {, digitoxin or digoxin} · CPC title
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