Penioxalicin, a novel 3-nor-2,3-seco-labdane type diterpene from the fungus Penicillium oxalicum TW01-1
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Add time:08/24/2019 Source:sciencedirect.com
Penioxalicin (1), the first 3-nor-2,3-seco-labdane type diterpene featuring the fission between C-2 and C-3 in the ring A and the decarboxylation at C-3, was isolated from the fungus Penicillium oxalicum TW01-1. Its planar structure and absolute configuration were elucidated mainly by analysis of 1D and 2D-NMR, ECD spectroscopic data, and single-crystal X-ray diffraction. Compound 1 showed moderate cytotoxicity against HL-60 cell line. The possible biosynthetic pathway of 1 was also proposed.
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