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

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

A new iridoid named (1R,6S,8R,9R) -1 -ethoxy-8-methyl-1,5,6,7,8,9-hexahydrocyclopenta[c] pyran-4-carbaldehyde (1) was isolated from the Tibetan folk medicine Incarvillea younghusbandii Sprague. Its structure was elucidated by spectral methods,e, g. ID and 2D NMR and HRMS.