Isolation and characterisation of three new anthraquinone secondary metabolites from Symplocos racemosa

Abstract

Three new anthraquinone secondary metabolites were isolated from Symplocos racemosa, a small tree of family symplocaceae. The structures of compounds (1–3) were elucidated to be 1,4-dihydroxy-6-(ethoxymethyl)-8-propylanthracene-9,10-dione (1), 1,4-dihydroxy-6-(hydroxymethyl)-8-butylanthracene-9,10-dione (2) and 1,4-dihydroxy-6-(hydroxymethyl)-8-propyl anthracene-9,10-dione (3) using their spectral data, i.e. through IR, UV, ¹H NMR, ¹³C NMR and two-dimensional (2D) NMR techniques including heteronuclear multiple quantum coherence, heteronuclear multiple bond correlation and correlation spectroscopy.

Keywords:

• anthraquinone
• Symplocos racemosa
• Symplocaceae

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

We acknowledge the Higher Education Commission (HEC) of Pakistan and COMSATS for their financial support.