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Updated: Apr 23, 2026

Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
Published on: May 4, 2018
A new natural nucleotide and other antibacterial metabolites from an endophytic Nocardia sp
Wei Li1, Xueqiong Yang, Yabin Yang
1a School of Chemical Science and Technology, Yunnan University , Kunming 650091 , P.R. China.
Abstract:
Nine compounds were isolated from Nocardia sp. YIM 64630, and their structures were elucidated as 5'-O-acetyl-2'-deoxyuridine (1), 22E,24R-5α,6α-epoxyergosta-8(14),22-diene-3β,7α-diol (2), 22E,24R-5α,6α-epoxyergosta-8,22-diene-3β,7α-diol (3), 22E,24R-ergosta-7,22-diene-3β,5α,6β-triol (4), 5α,8α-epidioxyergosta-6,22-dien-3β-ol (5), 4',5,6-trihydroxy-7-methoxyisoflavone (6), 2,4,4'-trihydroxy-deoxybenzoin (7), methyl [4-hydroxyphenyl]acetate (8) and daidzein by extensive spectroscopic analyses. Compound 1 was isolated from natural resources for the first time. The antimicrobial and antioxidant activities of compounds 1-8 were investigated.
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