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Chromatographic separation of the extract from roots of Adenophora triphylla resulted in the isolation of two pyrrolidines, six piperidines, and two piperidine glycosides. The structures of new iminosugars were elucidated by spectroscopic methods as 2,5-dideoxy-2,5-imino-d-altritol (DIA) (2), β-1-C-butenyl-1-deoxygalactonojirimycin (8), 2,3-dideoxy-β-1-C-ethyl-1-deoxygalactonojirimycin (9), and 6-O-β-d-glucopyranosyl-2,3-dideoxy-β-1-C-ethyl-1-deoxygalactonojirimycin...
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