ABSTRACT
Dipentodon is a monotypic genus of Dipentodontaceae and the only species, Dipentodon sinicus, is scattered in southwest China as well as adjacent Myanmar, northeast India and northern Vietnam. This species was evaluated as vulnerable in ‘China Species Red List’. Here, we assembled and characterized the complete chloroplast (cp) genome of D. sinicus using Illumina sequencing data for the first time. The complete cp genome was 158,795 bp in length, consisting of a pair of inverted repeats of 26,587 bp, a large single-copy region of 87,233 bp and a small single-copy region of 18,388 bp. The genome encoded 113 unique genes, including 79 protein-coding genes, 30 tRNA genes and four rRNA genes. Phylogenetic analysis based on 16 complete cp genome sequences indicated that D. sinicus is a member of Huerteales, consistent with its position in the latest classification of flowering plants (AGP IV).
ABSTRACT
Objective To study the chemical constituents from Dipentodon sinicus. Methods Isolation and purification were carried out on silica gel column and Sephadex LH-20, the structures were elucidated on the basis of chemical evidences and spectral analysis. Results Nine compounds were isolated and their structures were identified as n-1-triacontanol (Ⅰ), ?-sitosterol (Ⅱ), pyrocatechol (Ⅲ), p-dihydroxyl benzene (Ⅳ), coniferyl aldehyde (Ⅴ), vanillic acid (Ⅵ), ergosterol peroxide (Ⅶ), ?-sitosterol-3-O-?-D-glucosides-3'-O-tritriacontanate (Ⅷ), and daucosterol (Ⅸ). Conclusion All the nine compounds are isolated from the title plant for the first time, among them, compound Ⅷ is a new compound named as dipentosinin.