Plancyamides A (1) and B (3), plancypyrazine A (2), and plancyols A (4) and B (5), five new compounds (1-5), and three known ones (6-8), were isolated from the whole bodies of Polyphaga plancyi Bolivar. Their structures were elucidated by a combination of spectroscopic analyses including 1D and 2D NMR, and HRESIMS. Among them, compound 3 is racemic, chiral HPLC separation afforded its respective enantiomers. The absolute configuration of 1 was assigned by computational methods. Biological evaluation of all the compounds with exception of 7 and 8 discloses that compounds 2 and 4 could inhibit JAK3 kinase with IC50 values of 12.6 and 5.0μM, respectively. In addition, compound 4 exhibit inhibitory activity towards DDR1 kinase with IC50 value of 4.87μM.
Keywords: Computational methods; DDR1; Insect; JAK3; Polyphaga plancyi Bolivar.
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