Leptomonines A and B, two novel rare benzyltetrahydroisoquinoline N-oxides from the aerial parts of Leptopyrum fumarioides as potential COX-2 inhibitors: in vitro and in silico studies.

Leptomonines A and B, two novel rare benzyltetrahydroisoquinoline N-oxides, were isolated from the aerial parts of Leptopyrum fumarioides (L.) Reichenb. collected in Tuv province, Mongolia.