Phenolic constituents from the stem barks of Rhizophora apiculata Blume

Pham Thanh  Binh; Nguyen Van  Chien; Nguyen Quoc Trung; Vu Huy Thong; Nguyen Van Tuyen; Nguyen Phuong Thao

doi:10.15625/2525-2518/58/5/14712

Author affiliations

Authors

Pham Thanh Binh Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST),18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Nguyen Van Chien Institute for Tropical Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Nguyen Quoc Trung Institute of Materials Science, VAST, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
Vu Huy Thong University of Fire Fighting and Prevention, 243 Khuat Duy Tien, Thanh Xuan, Ha Noi, Viet Nam
Nguyen Van Tuyen Institute of Chemistry, VAST, 18 Hoang Quoc Viet,Cau Giay, Ha Noi, Viet Nam
Nguyen Phuong Thao Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST),18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/58/5/14712

Keywords:

Rhizophora apiculata, Rhizophoraceae, phenolic compounds.

Abstract

Using various chromatographic separations, seven phenolic derivatives (1‒7) were isolated from a methanolic extract of R. apiculata stem barks. Their structures were elucidated to be dunnianoside E (1), (+)-dihydroquercetin (2), 2,6-dimethoxy-[1,4]benzoquinone (3), 2,4,6-trimethoxyphenol (4), 3,4,5-trimethoxybenzyl alcohol (5), hydroxytyrosol (6), and methyl 3,4-dihydroxycinnamate (7) by detailed analysis via spectroscopic techniques (1D, 2D NMR and ESI-MS data) as well as comparison with those reported. This is the first report of compounds 1 and 4‒7 from Rhizophora genus.

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