title: Two novel anti-emetic principles of Alpinia katsumadai.
abstract: Two novel diarylheptanoids named katsumadain A (1) and katsumadain B (2) were isolated from the seeds of Alpinia katsumadai, and their structures were determined by spectroscopic analysis. Both katsumadains A (1) and B (2) showed anti-emetic activities on copper sulfate-induced emesis in young chicks.
authors.affiliation: Department of Pharmacognosy and Phytochemistry, Meiji Pharmaceutical University, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.forename: K
authors.initials: K
authors.lastname: Kinoshita
authors.forename: K
authors.initials: K
authors.lastname: Koyama
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
authors.forename: T
authors.initials: T
authors.lastname: Tai
authors.forename: Y
authors.initials: Y
authors.lastname: Nunoura
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
mesh_terms: D000818:Animals; D000932:Antiemetics / Q000302:isolation & purification*; D002645:Chickens; D036381:Diarylheptanoids; D004365:Drugs, Chinese Herbal / Q000302:isolation & purification*; D008956:Models, Chemical; D011753:Pyrones / Q000302:isolation & purification*; D012639:Seeds / Q000737:chemistry; D019862:Zingiberales / Q000737:chemistry*
chemical_list: D000932:Antiemetics; D036381:Diarylheptanoids; D004365:Drugs, Chinese Herbal; D011753:Pyrones; C404385:katsumadain A; C404386:katsumadain B