A new proaporphine alkaloid, 8, 9-dihydroprooxocryptochine (1), together with three known alkaloids, was isolated from the aerial parts of Meconopsis horridula Hook. f. & Thomson (Papaveraceae), a traditional Tibetan medicine. The structure of 1 was determined by spectroscopic methods.
8, 9-Dihydroprooxocryptochine, a new proaporphine alkaloid from Meconopsis horridula, a tradional Tibetan medicine.
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