STUDIES ON SIOMYCIN. II
作者:MITSUO EBATA、KUNIKO MIYAZAKI、HIDEO OTSUKA
DOI:10.7164/antibiotics.22.423
日期:——
From the hydrolysate of siomycin A, an antibiotic from Streptomyces sioyaensis, L-threonine, L-alanine, L-valine, D-cysteine and three thiazole-4- carboxylic acid derivatives were isolated. These thiazoles were identified as thiostreptine, 2-aminomethylthiazole-4-carboxylic acid and 2-(1-amino acetonyl) thiazole-4-carboxylic acid. A 4-(α-hydroxyethyl)-8-hydroxyquinaldic acid, and two unidentified C10- and C12-compounds were also isolated in the hydrolysate. The formation of pyruvic acid (2 moles), α-amino-n-butyric acid (less than 1 mole), propionic acid (2-3 moles) and acetaldehyde (1 mole) by the action of acid or alkali on siomycin A was demonstrated.
从西欧霉素 A(一种来自西欧链霉菌的抗生素)的水解物中分离出了 L-苏氨酸、L-丙氨酸、L-缬氨酸、D-半胱氨酸和三种噻唑-4-羧酸衍生物。经鉴定,这些噻唑类化合物分别为硫代链霉素、2-氨基甲基噻唑-4-羧酸和 2-(1-氨基丙酮基)噻唑-4-羧酸。水解产物中还分离出一种 4-(α-羟乙基)-8-羟基喹啉二酸和两种未确定的 C10 和 C12 化合物。在酸或碱对西霉素 A 的作用下,可生成丙酮酸(2 摩尔)、α-氨基正丁酸(少于 1 摩尔)、丙酸(2-3 摩尔)和乙醛(1 摩尔)。