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Complete assignments of 1 H and 13 C NMR data for new dibenzocyclooctadiene lignans from Kadsura oblongifolia
Author(s) -
Liu HaiTao,
Xu LiJia,
Peng Yong,
Yang JunShan,
Yang XiuWei,
Xiao PeiGen
Publication year - 2009
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2430
Subject(s) - chemistry , stereochemistry
Two new dibenzocyclooctadiene lignans, named kadoblongifolins A (1) and B (2), and one new natural product dibenzocyclooctadiene lignan, named kadoblongifolin C (3), were isolated from the stems of Kadsura oblongifolia ( K. oblongifolia ), together with five known ones, schizanrin F (4), propinquanin C (5), schisantherin G (6), heteroclitin Q (7), kadsurarin (8). The structures of these new lignans were elucidated by a combination of high‐resolution electron ionization mass spectrometry (HR‐EI‐MS), 1 H NMR, 13 C NMR, HMQC, HMBC, and NOESY spectra. Copyright © 2009 John Wiley & Sons, Ltd.