Structure elucidation of five new iridoid glucosides from the leaves of Avicennia marina.
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.
Sun
Yu
Y
State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100083, People's Republic of China.
Ouyang
Jie
J
Deng
Zhiwei
Z
Li
Qingshan
Q
Lin
Wenhan
W
D032407:Avicennia / Q000737:chemistry*; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry
D039823:Iridoids