作者:Makoto Tamaki、Manabu Kokuno、Ichiro Sasaki、Yumiko Suzuki、Michiko Iwama、Kenichi Saegusa、Yusuke kikuchi、Mitsuno Shindo、Masahiro Kimura、Yoshiki Uchida
DOI:10.1016/j.bmcl.2009.03.133
日期:2009.5
Antibiotic and hemolytic activities of gratisin (GR), cyclo(-Val(1)-Orn(2)-Leu(3)-D-Phe(4)-Pro(5)-D-Tyr(6)-)(2), and. fifteen GR analogues, which have various D-amino acid residues in place of D-Tyr(6,6') residues, were examined. Among them, [D-Orn(6,6')]-GR, [D-Lys(6,6')]-GR and [D-Arg(6,6')]-GR showed the strong activity against both Gram-positive and Gram-negative bacteria. In addition, the antibiotics showed significantly reduced toxicity against human blood cells compared with gramicidin S, cyclo(-Val(1)-Orn(2)-Leu(3)-D-Phe(4)-Pro(5)-)(2). (C) 2009 Elsevier Ltd. All rights reserved.