New lignans from the heartwood of Chamaecyparis obtusa var. formosana.
Four new lignans, 3',4'-O,O-demethylenehinokinin (1), chamalignolide (2), 8'beta-hydroxyhinokinin (3) and 7beta,8beta-epoxyzuonin A (4), as well as (-)-hinokinin (5), and (-)-zuonin A (6), were isolated from the heartwood of Chamaecyparis obtusa var. formosana. The structures of these lignans were unambiguously determined by spectroscopic methods. And the absolute configuration of 1 was elucidated with a circular dichroism (CD) spectrum.
Department of Chemistry, National Taiwan University, Tapei, Taiwan, ROC. yhkuo@ccms.ntu.edu.tw
Yueh-Hsiung
YH
Kuo
Chia-Hsien
CH
Chen
Yun-Lian
YL
Lin
D002942:Circular Dichroism; D017705:Lignans / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013624:Taiwan; D014197:Trees / Q000737:chemistry*; D014934:Wood
D017705:Lignans