Abstract Fortimicin A and a number of 4-N-acylfortimicins B, although stable as either the fully protonated hydrochloride or sulfate salts, undergo degradation as the free bases in aqueous solution. Detailed studies with fortimicin A and 4-N-acetylfortimicin B have shown that degradation occurs, in part, by simple cleavage of the 4-N-acyl groups with formation of fortimicin B, and, in part, by rearrangement
摘要Fortimicin A和许多4-N-酰基fortimicins B虽然可以作为完全质子化的盐酸盐或
硫酸盐稳定,但在
水溶液中会以游离碱的形式降解。对Fortimicin A和4-N-乙酰福寿霉素B进行的详细研究表明,降解发生的部分原因是通过形成Fortimicin B的4-N-酰基的简单裂解,以及部分地通过重排至2'- N-酰基fortimicins B(isofortimicin重排)。描述了将重排产物转化为2'-N-甘
氨酰
香豆素A,2'-N-乙酰
香豆素A和2'-N-(2-
氨基乙基)
香豆素A和B的转化。介绍了新的fortimicin A衍
生物的抗菌活性。