Abstract

“Kursi caper” consists of extracts from four plants and is used in Uighur traditional medicine to treat rheumatism, arthritis, and gout. Our previous studies proved that Kursi caper is effective against arthritis [1]. Some of its active constituents are the total alkaloids [2]. The currently used methods for separating the alkaloids are inconvenient and ineffective. In continuation of this research, we isolated from Kursi caper the three alkaloids harmine (1), harmaline (2), and -harmine (3) by countercurrent chromatography with pH-dependent distribution:

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