Nocaviogua A and B: two lipolanthines from root-nodule-associated Nocardia sp.

Autor: Shanshan Chang, Yajun Luo, Ning He, Xinyue Huang, Mingxu Chen, Lijie Yuan, Yunying Xie
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Chemistry, Vol 11 (2023)
Druh dokumentu: article
ISSN: 2296-2646
DOI: 10.3389/fchem.2023.1233938
Popis: Nocaviogua A (1) and B (2), two lipolanthines featuring a non-canonical avionin (Avi)-containing macrocycle and a long acyl chain, were identified from the mutualistic actinomycete Nocardia sp. XZ19_369, which was isolated from the nodules of sea buckthorn collected in Tibet. Their planar structures were elucidated via extensive analyses of 1D and 2D NMR, as well as HRMS data. The absolute configurations were fully elucidated by advanced Marfey’s analysis and GIAO NMR calculations, representing the first time that the configurations of this family of lipolanthines have been determined. Nocaviogua A (1) exhibited weak cytotoxicity against human chronic uveal melanoma cells (UM92-1), non-small cell lung cancer (NCI-H2170), and breast cancer (MDA-MB-231). Our work provides valuable information on this burgeoning class of lipolanthines for further investigations.
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