L-.BETA.-(5-Hydroxy-2-pyridyl)-alanine and L-.BETA.-(3-hydroxyureido)-alanine from streptomyces.
作者:SHIGEHARU INOUYE、TAKASHI SHOMURA、TAKASHI TSURUOKA、YASUAKI OGAWA、HIROSHI WATANABE、JUNKO YOSHIDA、TARO NIIDA
DOI:10.1248/cpb.23.2669
日期:——
In the course of the chemical screening study on the metabolites from actinomycetes, two unusual amino acids were isolated : L-β-(5-Hydroxy-2-pyridyl)-alanine (1) and L-β-(3-hydroxyureido)-alanine (9). The structures of 1 and 9 were elucidated from the physico-chemical properties of these amino acids and derivatives, and supported by synthesis. Antibacterial activities of 1 and its methylester (2) were antagonized by L-tyrosine, and those of 9 and its derivative (17) by L-glutamine.
在对放线菌代谢物进行化学筛选研究的过程中,分离出两种不寻常的氨基酸:L-β-(5-羟基-2-吡啶基)-丙氨酸(1)和L-β-(3-羟基脲基)-丙氨酸(9)。通过这些氨基酸及其衍生物的物理化学性质,并结合合成实验,阐明了1和9的结构。L-酪氨酸可对抗1及其甲基酯(2)的抗菌活性,而L-谷氨酰胺则可对抗9及其衍生物(17)的抗菌活性。