| new duclauxamide from penicillium manginii yim ph30375 and structure revision of the duclauxin family. | duclauxamide a1 (1), a new polyketide-derived heptacyclic oligophenalenone dimer with a n-2-hydroxyethyl moiety, was isolated from penicillium manginii yim ph30375. spectroscopic analysis, x-ray single crystal diffraction, and (13)c nmr dft calculations confirmed that compound 1 and other duclauxin analogues possess the unified s configuration at c-9', which corrects a long-standing misrepresentation of duclauxins as c-9'r epimers. a plausible biosynthetic pathway for duclauxins is proposed on t ... | 2015 | 25695664 |