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Blaps japanensis is a medicinal insect used for the treatment of a variety of disorders in Yi-nationality of Yunnan province, China. In the present study, two new compounds, named pipajiains F and G (1 and 2), along with four known compounds, 3-indolealdehyde (3), L-tryptophan (4), ginsenine (5), and anoectochine (6) were isolated from B. japanensis. Their structures were identified on the basis of spectroscopic methods. Compound 1 is a phenolic compound bearing a pyridine-1-ium-1carboxylate motif in the structure which made 1 an unusual architecture. Compounds 2 is an indole alkaloid derivative. Biological activities of all these compounds towards COX-2, ROCK1/2, and JAK3 kinases were evaluated.

Two New Compounds from Medicinal Insect Blaps japanensis and Their Biological Evaluation