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Structure elucidation of five new iridoid glucosides from the leaves of Avicennia marina
Author(s) -
Sun Yu,
Ouyang Jie,
Deng Zhiwei,
Li Qingshan,
Lin Wenhan
Publication year - 2008
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.2224
Subject(s) - avicennia marina , chemistry , mangrove , iridoid , two dimensional nuclear magnetic resonance spectroscopy , stereochemistry , carbon 13 nmr , botany , glycoside , ecology , biology
A chemical examination of the mangrove plant Avicennia marina (Forrsk.) Vierh resulted in the isolation and characterization of five new iridoids, marinoids A–E (1–5), along with 2′‐cinnamoyl‐mussaenosidic acid (6), 2′‐ O ‐(4″‐methoxycinnamoyl) mussaenosidic acid (7), 2′‐ O ‐(4″‐hydroxycinnamoyl) mussaenosidic acid (8), and 3( R )‐hydroxy‐5‐phenyl‐4( E )‐pentenoic acid (9). The structures of 1–5 were elucidated on the basis of 1D and 2D NMR (COSY, HMQC, HMBC, and NOESY) in association with IR and MS data analysis. Copyright © 2008 John Wiley & Sons, Ltd.