Chrysamides A-C, Three Dimeric Nitrophenyl trans-Epoxyamides Produced by the Deep-Sea-Derived Fungus Penicillium chrysogenum SCSIO41001.

Organic letters

PubMedID: 27440074

Chen S, Wang J, Lin X, Zhao B, Wei X, Li G, Kaliaperumal K, Liao S, Yang B, Zhou X, Liu J, Xu S, Liu Y. Chrysamides A-C, Three Dimeric Nitrophenyl trans-Epoxyamides Produced by the Deep-Sea-Derived Fungus Penicillium chrysogenum SCSIO41001. Org Lett. 2016;.
Three dimeric nitrophenyl trans-epoxyamides, chrysamides A-C (1-3), were obtained from the deep-sea-derived fungus Penicillium chrysogenum SCSIO41001. Their structures were characterized by spectroscopic analysis, electronic circular dichroism computations, and X-ray single-crystal diffraction analysis. Notably, compound 1 possesses a novel centrosymmetric dimer skeleton featuring an unprecedented 7-oxa-2,5-diazabicyclo[2. 2. 1]heptane ring system, which represents the first example of dimeric nitrophenyl trans-epoxyamide in nature. Compound 3 suppresses the production of proinflammatory cytokine interleukin-17. A possible biosynthetic pathway of 1-3 was proposed.