37720-87-9Relevant academic research and scientific papers
Iridoid glycosides and grayanane diterpenoids from the roots of Craibiodendron henryi
Huang, Xiang-Zhong,Wang, Ying-Hong,Yu, Shi-Shan,Fu, Guang-Miao,Hu, You-Cai,Liu, Yue,Fan, Li-Hua
, p. 1646 - 1650 (2005)
Four new iridoid glycosides, 10-O-trans-p-coumaroylscandoside (1), 10-O-cis-p-coumaroylscandoside (2), 10-O-trans-p-coumaroyldesacetyl asperulosidic acid (3), and 10-O-cis-p-coumaroyldesacetyl asperulosidic acid (4), and two new grayanane diterpenoids, 14β-O-(2S,3S-nilyl)-2α, 3β,5β,6β,16α-pentahydroxygrayanane (5) and 14β-O-(2S,3S-nilyl)-2α,3β,5β,6β,16α- pentahydroxygrayan-10(20)-ene (6), have been isolated from Craibiodendron henryi. The structures of these compounds were determined by chemical and spectroscopic methods including 1H-1H COSY, HMQC, HMBC, and NOESY experiments. Antioxidant activities and vasodilator effects of these compounds were assessed.
Accumulation of Highly Toxic Ericaceous Diterpenoids by the Geometrid Moth, Arichanna gaschkevitchii
Nishida, Ritsuo,Fukami, Hiroshi,Iriye, Ryozo,Kumazawa, Zenzaburo
, p. 2347 - 2352 (2007/10/02)
Adults of geometrid moth, Arichanna gaschkevitchii, were found to store grayanoid diterpenes originating from the larval host plant, Pieris japonica (Ericaceae), in the body tissue.The compounds were characterized as asebotoxins I and IV, grayanotoxin III, rhodojaponin III, kalmitoxin I and two new analogs, arichannatoxin I and II.The content of the total grayanoid analogs in the body tissue was as high as 300μg/moth.The most predominant component, asebotoxin I (200μg/moth), strongly deterred feeding of house lizards, which suggests a defensive role against predatory animals.
