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Updated: Aug 23, 2026

Sample Preparation Method of Scanning and Transmission Electron Microscope for the Appendages of Woodboring Beetle
Published on: February 3, 2020
Constituents of Carapa guianensis Aubl. (Meliaceae)
Shu-Hua Qi1, Da-Gang Wu, Si Zhang
1Guangdong Key Laboratory of Marine Materia Medical, South China Sea Institute of Oceanology, The Chinese Academy of Sciences, Guangzhou, Guangdong, People's Republic of China. shuhuaqi2001@yahoo.com
Abstract:
Nine compounds were isolated from the EtOH extraction of the twig of Carapa guianensis Aubl. On the basis of spectroscopic methods, their structures were elucidated as 1,3-di-benzene carbon amine-2-octadecylic acid-glyceride (1), hexacosanoic acid-2,3-dihydroxy-glyceride (2), ursolic acid (3), naringenin (4), scopoletin (5), 3,4-dihydroxymethylbenzoate (6), 2,6-dihydroxymethylbenzoate (7), tetratriacontanoic acid (8), triacontanoic acid (9) respectively. Among them 1 was new, 2 was firstly isolated from nature, and 3-9 were obtained from this plant for the first time.
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