Pyloricidins, novel anti-Helicobacter pylori antibiotics produced by Bacillus sp.: II.: Isolation and structure elucidation

被引:18
作者
Nagano, Y
Ikedo, K
Fujishima, A
Izawa, M
Tsubotani, S
Nishimura, O
Fujino, M
机构
[1] Takeda Chem Ind Ltd, Div Pharmaceut Res, Pharmaceut Discovery Ctr, Yodogawa Ku, Osaka 5328686, Japan
[2] Takeda Chem Ind Ltd, Div Pharmaceut Res, Med Chem Res Labs 1, Yodogawa Ku, Osaka 5328686, Japan
[3] Takeda Chem Ind Ltd, Div Pharmaceut Res, Tsukuba, Ibaraki 3004293, Japan
[4] Takeda Chem Ind Ltd, Chuo Ku, Osaka 5408645, Japan
关键词
D O I
10.7164/antibiotics.54.934
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Novel anti-Helicobacter pylori antibiotics, pyloricidins A, A(1), A(2), B, C and D were isolated from Bacillus sp. HC-70 and Bacillus sp. HC-72 by column chromatographies using adsorption and ion exchange resins. Their structures have been elucidated based on spectroscopic and degradation studies and shown to be peptide-like compounds. These compounds contained two unusual amino acids, viz.. 5-amino-2,3,4,6-tetrahydroxyhexanoic acid and 3-amino-3-phenylpropionic acid (beta -phenylalanine). The structure-activity relationship studies suggested that 3-(5-amino-2,3,4,6-tetrahydroxyhexanoyl)amino-3-phenylpropionic acid moiety was essential for anti-H. pylori activity.
引用
收藏
页码:934 / 947
页数:14
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