Selective acylation of the C-1 amino group of aminoglycoside antibiotics
AssigneeSchering Corporation
InventorJohn J. Wright
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Abstract
A novel process for preparing novel 1-N-acyl-4,6-di-(aminoglycosyl)aminocyclitols is disclosed. The compounds are useful as antibacterial agents.
Claims18
A process for 1-N-acylating 4,6-di-(aminoglycosyl)aminocyclitol antibiotics which comprises reacting a partially neutralized acid addition salt of such antibiotic with an acylating agent derived from a carboxylic acid having 1 to 8 carbon atoms, said acylating agent being unsubstituted, mono substituted by a substituent selected from the group consisting of hydroxy and amino, or di-substituted by one of each such substituents with the proviso that when the acylating agent is di-substituted the substituents must occupy positions on different carbon atoms.
In the process for preparing 1-N-hydroxyaminoacyl derivatives of 4,6-di-(aminoglycosyl)aminocyclitol antibiotics by acylating such antibiotics with an acylating agent derived from a carboxylic acid having 3 to 8 carbon atoms, said acylating agent bearing a hydroxy and an amino substituent on different carbon atoms, the improvement which comprises acylating a partially neutralized acid addition salt of said antibiotic.
A 1-N-Z-4,6-di-(aminoglycosyl)aminocyclitol antibacterial agent selected from the group consisting of 1-N-Z-gentamicin A, 1-N-Z-gentamicin B, 1-N-Z-gentamicin B.sub.1, 1-N-Z-gentamicin C.sub.1 1-N-Z-gentamicin C.sub.1a, 1-N-Z-gentamicin C.sub.2, 1-N-Z-gentamicin C.sub.2a, 1-N-Z-gentamicin X, 1-N-Z-3',4'-dideoxykanamycin B, 1-N-Z-sisomicin, 1-N-Z-verdamicin, 1-N-Z-tobramycin, 1-N-Z-antibiotic G-418, 1-N-Zantibiotic 66-40B, 1-N-Z-antibiotic JI-20A, 1-N-Z-antibiotic JI-20B, 1-N-Z-antibiotic G-52, 1-N-Z-mutamicin 1, 1-N-Z-mutamicin 2, 1-N-Z-mutamicin 4, 1-N-Z-mutamicin 5, 1-N-Z-mutamicin 6, and the non-toxic acid addition salts thereof wherein Z is an acyl group derived from a hydrocarbon carboxylic acid having 1 to 5 carbon atoms, said acyl group being unsubstituted or mono substituted by either hydroxy or amino, said acyl group being straight chain, branched chain or cyclic, said acyl group also being saturated or unsaturated with the proviso that when Z is formyl or is unsaturated it must also be unsubstituted.
1-N-acetyl sisomicin.
1-N-acetyl verdamicin.
1-N-acetyl antibiotic G-52.
1-N-acetyl gentamicin C.sub.1a.
Dependencies are inferred from the claim text.