New derivatives of an antibiotic XK-62-2 are produced by chemically modifying the antibiotic XK-62-2. The new derivatives are 1-N-(.alpha.-hydroxy-.delta.-aminovaleryl)XK-62-2 and 1-N-(.alpha.-hydroxy-.epsilon.-aminocaproyl)XK-62-2 as well as acid addition salts thereof.
                            通过对抗生素XK-62-2进行
化学修饰,产生了新的衍
生物。这些新的衍
生物是1-N-(α-羟基-δ-
氨基戊酰基)XK-62-2和1-N-(α-羟基-ε-
氨基癸酰基)XK-62-2,以及它们的酸加成盐。