Two new terragine analogs (1‒2) with special succinimide and aminopentane moieties were isolated from the fermentation broth of Bacillus sp. SH-1.2-ROOT-18, an endophyte previously discovered from the root of Dendrobium officinale. The structures were elucidated base on comprehensive 1 D/2D NMR and MS data analysis. Complete NMR assignments for the first reported naturally occurring metabolite 3 was also provided.
Funding
This research was financially supported by National Key R&D Program (No. 2019YFC1711500), Nature Science Foundation of Jiangsu Higher Education Institutions of China (No. 19KJA180008), Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX20_1584) and Jiangsu Provincial "Double Creation Talent Program" (202010528).