Four new (penigrisacids A-D, -) and one known () carotane sesquiterpenoids were isolated from the deep-sea-derived fungus , along with four known compounds (-). The planar structures and relative configurations of the new compounds were determined by extensive analysis of the NMR and HRESIMS data. The absolute configurations were established by comparison of the experimental and calculated ECD (electronic circular dichroism) spectra or OR (optical rotation) value.
View Article and Find Full Text PDFFrom the deep sea-derived MCCC 1A01570, eight cyclic dipeptides (1-8) and five phenolics (9-13) were obtained. Cyclo-(I-Pro-D-Leu) (4) could moderately promote the gene transcriptional function of nuclear receptor RXRα, while , , and showed weak reduction in RXRα gene transcriptional activities induced by 9--retinoid acid (RA). These compounds might have beneficial effects against intractable diseases with relation to RXRα, such as cancer and metabolic diseases, due to their potential activities on regulating the transcriptional activation function of RXRα.
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