C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
260/230.35
C07H 17/08 (2006.01)
Patent
CA 1259307
ABSTRACT OF THE DISCLOSURE Antibacterial and intermediate substances which are derived by selective chemical transformation of partially hydrolyzed tylosin and related macrolide derivatives in which only the mycaminose sugar remains attached to the macrocyclic lactone ring. Compounds having particular utility as antibacterial agents have C-6 side chain aldehyde converted to a hydrazone, the C-3 ring hydroxy group acylated, and/or the C-14 hydroxymethyl group converted to a sulfonate or carboxylate ester, or to a halomethyl, aminomethyl, sulfonamidomethyl or carboxamidomethyl group. Compounds whose prime utility is as intermediates have side chain aldehyde group protected as an acetal, mycaminose sugar hydroxyls protected as carboxylate ester and/or C-14 hydroxymethyl converted to a formyl or azidomethyl group.
555983
Limited Pfizer
Smart & Biggar
LandOfFree
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